java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label23_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:52:09,567 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:52:09,569 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:52:09,586 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:52:09,586 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:52:09,587 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:52:09,589 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:52:09,591 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:52:09,592 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:52:09,593 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:52:09,594 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:52:09,595 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:52:09,596 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:52:09,597 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:52:09,598 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:52:09,599 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:52:09,600 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:52:09,602 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:52:09,604 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:52:09,606 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:52:09,607 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:52:09,608 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:52:09,611 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:52:09,611 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:52:09,611 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:52:09,612 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:52:09,613 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:52:09,614 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:52:09,615 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:52:09,616 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:52:09,617 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:52:09,618 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:52:09,618 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:52:09,618 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:52:09,619 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:52:09,620 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:52:09,620 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 [2018-11-07 20:52:09,636 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:52:09,637 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:52:09,638 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:52:09,639 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:52:09,639 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:52:09,639 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:52:09,639 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:52:09,640 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:52:09,640 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:52:09,640 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:52:09,640 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:52:09,640 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:52:09,640 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:52:09,642 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:52:09,642 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:52:09,642 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:52:09,642 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:52:09,643 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:52:09,644 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:52:09,644 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:52:09,644 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:52:09,644 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:52:09,645 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:52:09,645 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:52:09,645 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:52:09,645 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:52:09,645 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:52:09,646 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:52:09,647 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:52:09,647 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:52:09,647 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:52:09,647 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:52:09,647 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:52:09,647 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:52:09,648 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:52:09,695 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:52:09,714 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:52:09,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:52:09,721 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:52:09,721 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:52:09,722 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label23_true-unreach-call.c [2018-11-07 20:52:09,798 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86be1c974/4039ff93913e49bc9752dce715393e82/FLAG6086e87d7 [2018-11-07 20:52:10,469 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:52:10,470 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label23_true-unreach-call.c [2018-11-07 20:52:10,502 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86be1c974/4039ff93913e49bc9752dce715393e82/FLAG6086e87d7 [2018-11-07 20:52:10,523 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86be1c974/4039ff93913e49bc9752dce715393e82 [2018-11-07 20:52:10,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:52:10,538 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:52:10,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:52:10,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:52:10,546 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:52:10,547 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:52:10" (1/1) ... [2018-11-07 20:52:10,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b56b8e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:10, skipping insertion in model container [2018-11-07 20:52:10,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:52:10" (1/1) ... [2018-11-07 20:52:10,562 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:52:10,643 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:52:11,443 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:52:11,447 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:52:11,757 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:52:11,779 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:52:11,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:11 WrapperNode [2018-11-07 20:52:11,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:52:11,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:52:11,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:52:11,782 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:52:11,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:11" (1/1) ... [2018-11-07 20:52:11,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:11" (1/1) ... [2018-11-07 20:52:12,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:52:12,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:52:12,008 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:52:12,009 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:52:12,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:11" (1/1) ... [2018-11-07 20:52:12,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:11" (1/1) ... [2018-11-07 20:52:12,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:11" (1/1) ... [2018-11-07 20:52:12,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:11" (1/1) ... [2018-11-07 20:52:12,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:11" (1/1) ... [2018-11-07 20:52:12,127 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:11" (1/1) ... [2018-11-07 20:52:12,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:11" (1/1) ... [2018-11-07 20:52:12,166 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:52:12,167 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:52:12,167 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:52:12,168 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:52:12,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:52:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:52:12,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:52:12,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:52:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:52:12,259 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:52:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:52:12,259 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:52:12,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:52:12,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:52:12,260 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:52:12,260 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:52:18,246 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:52:18,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:52:18 BoogieIcfgContainer [2018-11-07 20:52:18,247 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:52:18,248 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:52:18,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:52:18,254 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:52:18,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:52:10" (1/3) ... [2018-11-07 20:52:18,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6850b80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:52:18, skipping insertion in model container [2018-11-07 20:52:18,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:52:11" (2/3) ... [2018-11-07 20:52:18,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6850b80a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:52:18, skipping insertion in model container [2018-11-07 20:52:18,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:52:18" (3/3) ... [2018-11-07 20:52:18,258 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label23_true-unreach-call.c [2018-11-07 20:52:18,268 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:52:18,278 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:52:18,296 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:52:18,339 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:52:18,339 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:52:18,339 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:52:18,340 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:52:18,340 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:52:18,340 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:52:18,340 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:52:18,340 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:52:18,384 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 20:52:18,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-11-07 20:52:18,396 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:52:18,397 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:52:18,400 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:52:18,407 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:52:18,408 INFO L82 PathProgramCache]: Analyzing trace with hash 265185508, now seen corresponding path program 1 times [2018-11-07 20:52:18,411 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:52:18,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:18,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:52:18,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:18,467 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:52:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:52:18,883 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:52:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:52:19,027 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:52:19,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:52:19,027 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:52:19,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:52:19,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:52:19,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:52:19,080 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 20:52:22,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:52:22,483 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 20:52:22,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:52:22,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-11-07 20:52:22,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:52:22,511 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 20:52:22,512 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 20:52:22,522 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:52:22,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 20:52:22,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 20:52:22,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 20:52:22,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-11-07 20:52:22,632 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 38 [2018-11-07 20:52:22,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:52:22,633 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-11-07 20:52:22,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:52:22,633 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-11-07 20:52:22,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 20:52:22,642 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:52:22,642 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:52:22,643 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:52:22,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:52:22,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1425782298, now seen corresponding path program 1 times [2018-11-07 20:52:22,643 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:52:22,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:22,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:52:22,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:22,645 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:52:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:52:23,065 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:52:23,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:52:23,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:52:23,066 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:52:23,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:52:23,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:52:23,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:52:23,070 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-11-07 20:52:29,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:52:29,530 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-11-07 20:52:29,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:52:29,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2018-11-07 20:52:29,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:52:29,554 INFO L225 Difference]: With dead ends: 2183 [2018-11-07 20:52:29,554 INFO L226 Difference]: Without dead ends: 1445 [2018-11-07 20:52:29,561 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:52:29,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-11-07 20:52:29,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-11-07 20:52:29,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-11-07 20:52:29,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-11-07 20:52:29,652 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 146 [2018-11-07 20:52:29,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:52:29,653 INFO L480 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-11-07 20:52:29,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:52:29,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-11-07 20:52:29,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-11-07 20:52:29,657 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:52:29,657 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:52:29,658 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:52:29,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:52:29,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1113937093, now seen corresponding path program 1 times [2018-11-07 20:52:29,658 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:52:29,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:29,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:52:29,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:29,660 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:52:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:52:29,926 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:52:29,927 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:52:29,927 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 20:52:29,927 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:52:29,928 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 20:52:29,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 20:52:29,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 20:52:29,929 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-11-07 20:52:33,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:52:33,679 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-11-07 20:52:33,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:52:33,682 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 149 [2018-11-07 20:52:33,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:52:33,698 INFO L225 Difference]: With dead ends: 3902 [2018-11-07 20:52:33,699 INFO L226 Difference]: Without dead ends: 2484 [2018-11-07 20:52:33,703 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 20:52:33,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-11-07 20:52:33,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-11-07 20:52:33,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-11-07 20:52:33,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-11-07 20:52:33,769 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 149 [2018-11-07 20:52:33,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:52:33,769 INFO L480 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-11-07 20:52:33,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 20:52:33,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-11-07 20:52:33,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-11-07 20:52:33,776 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:52:33,776 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:52:33,777 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:52:33,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:52:33,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1340726665, now seen corresponding path program 1 times [2018-11-07 20:52:33,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:52:33,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:33,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:52:33,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:52:33,779 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:52:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:52:34,080 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 62 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 20:52:34,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:52:34,081 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:52:34,082 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-11-07 20:52:34,084 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [383], [385], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:52:34,152 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:52:34,152 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:52:34,968 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:52:34,969 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:52:34,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:52:34,987 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:52:35,902 INFO L227 lantSequenceWeakener]: Weakened 243 states. On average, predicates are now at 77.75% of their original sizes. [2018-11-07 20:52:35,903 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:52:37,540 INFO L415 sIntCurrentIteration]: We unified 264 AI predicates to 264 [2018-11-07 20:52:37,541 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:52:37,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:52:37,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 20:52:37,542 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:52:37,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:52:37,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:52:37,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:52:37,544 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 10 states. [2018-11-07 20:52:43,177 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:53:13,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:53:13,757 INFO L93 Difference]: Finished difference Result 5285 states and 7974 transitions. [2018-11-07 20:53:13,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 20:53:13,758 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 265 [2018-11-07 20:53:13,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:53:13,774 INFO L225 Difference]: With dead ends: 5285 [2018-11-07 20:53:13,774 INFO L226 Difference]: Without dead ends: 2817 [2018-11-07 20:53:13,784 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 268 GetRequests, 213 SyntacticMatches, 43 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-07 20:53:13,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2018-11-07 20:53:13,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2812. [2018-11-07 20:53:13,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-11-07 20:53:13,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-11-07 20:53:13,856 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 265 [2018-11-07 20:53:13,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:53:13,857 INFO L480 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-11-07 20:53:13,857 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:53:13,857 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-11-07 20:53:14,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-11-07 20:53:14,660 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:53:14,660 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:53:14,661 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:53:14,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:53:14,661 INFO L82 PathProgramCache]: Analyzing trace with hash -251720153, now seen corresponding path program 1 times [2018-11-07 20:53:14,661 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:53:14,664 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:53:14,665 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:53:14,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:53:14,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:53:14,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:53:15,102 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 188 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-07 20:53:15,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:53:15,103 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:53:15,103 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 358 with the following transitions: [2018-11-07 20:53:15,104 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [383], [385], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:53:15,109 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:53:15,109 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:53:15,176 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:53:15,418 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:53:15,418 INFO L272 AbstractInterpreter]: Visited 125 different actions 362 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:53:15,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:53:15,427 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:53:16,049 INFO L227 lantSequenceWeakener]: Weakened 113 states. On average, predicates are now at 77.67% of their original sizes. [2018-11-07 20:53:16,049 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:53:17,365 INFO L415 sIntCurrentIteration]: We unified 356 AI predicates to 356 [2018-11-07 20:53:17,365 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:53:17,365 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:53:17,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 20:53:17,366 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:53:17,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 20:53:17,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 20:53:17,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-11-07 20:53:17,368 INFO L87 Difference]: Start difference. First operand 2812 states and 4089 transitions. Second operand 18 states. [2018-11-07 20:53:52,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:53:52,878 INFO L93 Difference]: Finished difference Result 6454 states and 9413 transitions. [2018-11-07 20:53:52,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-07 20:53:52,879 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 357 [2018-11-07 20:53:52,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:53:52,898 INFO L225 Difference]: With dead ends: 6454 [2018-11-07 20:53:52,898 INFO L226 Difference]: Without dead ends: 3986 [2018-11-07 20:53:52,908 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 366 GetRequests, 325 SyntacticMatches, 15 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=168, Invalid=588, Unknown=0, NotChecked=0, Total=756 [2018-11-07 20:53:52,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3986 states. [2018-11-07 20:53:52,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3986 to 3756. [2018-11-07 20:53:52,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3756 states. [2018-11-07 20:53:53,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3756 states to 3756 states and 5082 transitions. [2018-11-07 20:53:53,001 INFO L78 Accepts]: Start accepts. Automaton has 3756 states and 5082 transitions. Word has length 357 [2018-11-07 20:53:53,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:53:53,002 INFO L480 AbstractCegarLoop]: Abstraction has 3756 states and 5082 transitions. [2018-11-07 20:53:53,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 20:53:53,002 INFO L276 IsEmpty]: Start isEmpty. Operand 3756 states and 5082 transitions. [2018-11-07 20:53:53,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-11-07 20:53:53,011 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:53:53,011 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:53:53,012 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:53:53,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:53:53,012 INFO L82 PathProgramCache]: Analyzing trace with hash -363456465, now seen corresponding path program 1 times [2018-11-07 20:53:53,012 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:53:53,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:53:53,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:53:53,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:53:53,014 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:53:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:53:53,344 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 20:53:53,838 WARN L179 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 20:53:54,518 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 212 proven. 110 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-11-07 20:53:54,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:53:54,518 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:53:54,519 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 394 with the following transitions: [2018-11-07 20:53:54,519 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [383], [385], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:53:54,524 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:53:54,524 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:53:54,594 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:53:55,629 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:53:55,630 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:53:55,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:53:55,668 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:53:56,146 INFO L227 lantSequenceWeakener]: Weakened 113 states. On average, predicates are now at 77.67% of their original sizes. [2018-11-07 20:53:56,147 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:53:56,530 INFO L415 sIntCurrentIteration]: We unified 392 AI predicates to 392 [2018-11-07 20:53:56,530 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:53:56,530 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:53:56,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [13] total 29 [2018-11-07 20:53:56,531 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:53:56,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 20:53:56,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 20:53:56,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2018-11-07 20:53:56,532 INFO L87 Difference]: Start difference. First operand 3756 states and 5082 transitions. Second operand 18 states. [2018-11-07 20:54:25,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:54:25,435 INFO L93 Difference]: Finished difference Result 7459 states and 10494 transitions. [2018-11-07 20:54:25,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-07 20:54:25,436 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 393 [2018-11-07 20:54:25,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:54:25,455 INFO L225 Difference]: With dead ends: 7459 [2018-11-07 20:54:25,456 INFO L226 Difference]: Without dead ends: 4647 [2018-11-07 20:54:25,465 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 401 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2018-11-07 20:54:25,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4647 states. [2018-11-07 20:54:25,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4647 to 4415. [2018-11-07 20:54:25,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4415 states. [2018-11-07 20:54:25,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4415 states to 4415 states and 5781 transitions. [2018-11-07 20:54:25,575 INFO L78 Accepts]: Start accepts. Automaton has 4415 states and 5781 transitions. Word has length 393 [2018-11-07 20:54:25,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:54:25,576 INFO L480 AbstractCegarLoop]: Abstraction has 4415 states and 5781 transitions. [2018-11-07 20:54:25,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 20:54:25,577 INFO L276 IsEmpty]: Start isEmpty. Operand 4415 states and 5781 transitions. [2018-11-07 20:54:25,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2018-11-07 20:54:25,591 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:54:25,591 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:54:25,592 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:54:25,592 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:54:25,592 INFO L82 PathProgramCache]: Analyzing trace with hash -608361969, now seen corresponding path program 1 times [2018-11-07 20:54:25,593 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:54:25,593 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:25,594 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:54:25,594 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:54:25,594 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:54:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:54:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 203 proven. 123 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2018-11-07 20:54:26,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:54:26,675 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:54:26,675 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 506 with the following transitions: [2018-11-07 20:54:26,676 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [383], [385], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:54:26,684 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:54:26,684 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:54:27,121 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:54:27,121 INFO L272 AbstractInterpreter]: Visited 249 different actions 494 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:54:27,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:54:27,129 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:54:28,195 INFO L227 lantSequenceWeakener]: Weakened 275 states. On average, predicates are now at 77.82% of their original sizes. [2018-11-07 20:54:28,195 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:54:28,930 INFO L415 sIntCurrentIteration]: We unified 504 AI predicates to 504 [2018-11-07 20:54:28,930 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:54:28,931 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:54:28,931 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [8] total 25 [2018-11-07 20:54:28,931 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:54:28,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 20:54:28,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 20:54:28,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:54:28,934 INFO L87 Difference]: Start difference. First operand 4415 states and 5781 transitions. Second operand 19 states. [2018-11-07 20:54:31,401 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:55:04,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:55:04,706 INFO L93 Difference]: Finished difference Result 8208 states and 11190 transitions. [2018-11-07 20:55:04,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-07 20:55:04,706 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 505 [2018-11-07 20:55:04,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:55:04,725 INFO L225 Difference]: With dead ends: 8208 [2018-11-07 20:55:04,725 INFO L226 Difference]: Without dead ends: 5051 [2018-11-07 20:55:04,735 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 522 GetRequests, 461 SyntacticMatches, 26 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=249, Invalid=1083, Unknown=0, NotChecked=0, Total=1332 [2018-11-07 20:55:04,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5051 states. [2018-11-07 20:55:04,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5051 to 5046. [2018-11-07 20:55:04,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5046 states. [2018-11-07 20:55:04,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5046 states to 5046 states and 6446 transitions. [2018-11-07 20:55:04,878 INFO L78 Accepts]: Start accepts. Automaton has 5046 states and 6446 transitions. Word has length 505 [2018-11-07 20:55:04,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:55:04,879 INFO L480 AbstractCegarLoop]: Abstraction has 5046 states and 6446 transitions. [2018-11-07 20:55:04,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-07 20:55:04,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5046 states and 6446 transitions. [2018-11-07 20:55:04,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2018-11-07 20:55:04,899 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:55:04,900 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:55:04,900 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:55:04,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:55:04,901 INFO L82 PathProgramCache]: Analyzing trace with hash 1926535583, now seen corresponding path program 1 times [2018-11-07 20:55:04,901 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:55:04,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:55:04,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:55:04,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:55:04,903 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:55:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:55:05,367 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:55:05,556 INFO L134 CoverageAnalysis]: Checked inductivity of 431 backedges. 99 proven. 260 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 20:55:05,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:55:05,557 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:55:05,557 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 514 with the following transitions: [2018-11-07 20:55:05,557 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [383], [385], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:55:05,562 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:55:05,563 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:55:08,236 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:55:08,236 INFO L272 AbstractInterpreter]: Visited 257 different actions 2516 times. Merged at 5 different actions 45 times. Widened at 1 different actions 5 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:55:08,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:55:08,245 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:55:09,027 INFO L227 lantSequenceWeakener]: Weakened 59 states. On average, predicates are now at 79.43% of their original sizes. [2018-11-07 20:55:09,028 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:55:09,388 INFO L415 sIntCurrentIteration]: We unified 512 AI predicates to 512 [2018-11-07 20:55:09,388 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:55:09,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:55:09,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-07 20:55:09,389 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:55:09,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-07 20:55:09,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-07 20:55:09,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2018-11-07 20:55:09,391 INFO L87 Difference]: Start difference. First operand 5046 states and 6446 transitions. Second operand 22 states. [2018-11-07 20:55:11,521 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:55:38,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:55:38,612 INFO L93 Difference]: Finished difference Result 8844 states and 11869 transitions. [2018-11-07 20:55:38,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-11-07 20:55:38,613 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 513 [2018-11-07 20:55:38,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:55:38,631 INFO L225 Difference]: With dead ends: 8844 [2018-11-07 20:55:38,631 INFO L226 Difference]: Without dead ends: 5687 [2018-11-07 20:55:38,642 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 523 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2018-11-07 20:55:38,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5687 states. [2018-11-07 20:55:38,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5687 to 5679. [2018-11-07 20:55:38,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5679 states. [2018-11-07 20:55:38,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5679 states to 5679 states and 7120 transitions. [2018-11-07 20:55:38,766 INFO L78 Accepts]: Start accepts. Automaton has 5679 states and 7120 transitions. Word has length 513 [2018-11-07 20:55:38,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:55:38,767 INFO L480 AbstractCegarLoop]: Abstraction has 5679 states and 7120 transitions. [2018-11-07 20:55:38,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-07 20:55:38,767 INFO L276 IsEmpty]: Start isEmpty. Operand 5679 states and 7120 transitions. [2018-11-07 20:55:38,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 598 [2018-11-07 20:55:38,790 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:55:38,791 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:55:38,791 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:55:38,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:55:38,792 INFO L82 PathProgramCache]: Analyzing trace with hash -838627667, now seen corresponding path program 1 times [2018-11-07 20:55:38,792 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:55:38,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:55:38,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:55:38,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:55:38,793 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:55:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:55:39,627 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 20:55:40,084 WARN L179 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 20:55:40,894 WARN L179 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2018-11-07 20:55:42,331 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 224 proven. 223 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-11-07 20:55:42,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:55:42,331 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:55:42,331 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 598 with the following transitions: [2018-11-07 20:55:42,332 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [383], [385], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 20:55:42,335 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:55:42,335 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:55:42,373 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:55:43,008 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 20:55:43,008 INFO L272 AbstractInterpreter]: Visited 251 different actions 996 times. Merged at 7 different actions 28 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 20:55:43,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:55:43,014 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 20:55:43,014 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:55:43,014 INFO L194 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 [2018-11-07 20:55:43,026 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:55:43,026 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 20:55:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:55:43,215 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 20:55:43,926 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 561 proven. 2 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2018-11-07 20:55:43,927 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 20:55:45,019 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 224 proven. 223 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2018-11-07 20:55:45,040 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 20:55:45,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 19 [2018-11-07 20:55:45,041 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 20:55:45,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 20:55:45,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 20:55:45,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2018-11-07 20:55:45,043 INFO L87 Difference]: Start difference. First operand 5679 states and 7120 transitions. Second operand 16 states. Received shutdown request... [2018-11-07 20:55:49,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 20:55:49,043 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:55:49,048 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:55:49,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:55:49 BoogieIcfgContainer [2018-11-07 20:55:49,049 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:55:49,050 INFO L168 Benchmark]: Toolchain (without parser) took 218513.59 ms. Allocated memory was 1.5 GB in the beginning and 4.8 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 20:55:49,051 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:55:49,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1241.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 20:55:49,052 INFO L168 Benchmark]: Boogie Procedure Inliner took 226.79 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -845.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 20:55:49,053 INFO L168 Benchmark]: Boogie Preprocessor took 158.63 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 20:55:49,053 INFO L168 Benchmark]: RCFGBuilder took 6080.17 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 252.3 MB). Peak memory consumption was 252.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:55:49,054 INFO L168 Benchmark]: TraceAbstraction took 210800.46 ms. Allocated memory was 2.2 GB in the beginning and 4.8 GB in the end (delta: 2.6 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 20:55:49,058 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1241.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 226.79 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -845.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 158.63 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6080.17 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 252.3 MB). Peak memory consumption was 252.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210800.46 ms. Allocated memory was 2.2 GB in the beginning and 4.8 GB in the end (delta: 2.6 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 100). Cancelled while BasicCegarLoop was constructing difference of abstraction (5679states) and FLOYD_HOARE automaton (currently 12 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1186 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 210.7s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 183.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2391 SDtfs, 22882 SDslu, 2311 SDs, 0 SdLazy, 31443 SolverSat, 3693 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 73.0s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 3325 GetRequests, 3067 SyntacticMatches, 88 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1517 ImplicationChecksByTransitivity, 8.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5679occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.2s AbstIntTime, 6 AbstIntIterations, 5 AbstIntStrong, 0.9977430828183347 AbsIntWeakeningRatio, 0.07593688362919132 AbsIntAvgWeakeningVarsNumRemoved, 10.298323471400394 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 511 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.6s InterpolantComputationTime, 3560 NumberOfCodeBlocks, 3560 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 4146 ConstructedInterpolants, 0 QuantifiedInterpolants, 11728977 SizeOfPredicates, 1 NumberOfNonLiveVariables, 862 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 2973/4130 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown