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_label14_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:00:33,630 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:00:33,632 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:00:33,644 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:00:33,644 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:00:33,646 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:00:33,647 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:00:33,649 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:00:33,650 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:00:33,651 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:00:33,654 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:00:33,654 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:00:33,655 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:00:33,656 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:00:33,658 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:00:33,659 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:00:33,660 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:00:33,664 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:00:33,667 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:00:33,668 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:00:33,669 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:00:33,671 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:00:33,673 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:00:33,673 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:00:33,674 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:00:33,675 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:00:33,676 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:00:33,677 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:00:33,677 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:00:33,678 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:00:33,679 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:00:33,679 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:00:33,680 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:00:33,680 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:00:33,681 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:00:33,682 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:00:33,682 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 18:00:33,709 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:00:33,709 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:00:33,710 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:00:33,710 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:00:33,710 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:00:33,711 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:00:33,711 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:00:33,711 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:00:33,711 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:00:33,711 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:00:33,712 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:00:33,715 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:00:33,716 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:00:33,716 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:00:33,717 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:00:33,718 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:00:33,718 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:00:33,718 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:00:33,718 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:00:33,718 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:00:33,719 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:00:33,719 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:00:33,719 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:00:33,719 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:00:33,719 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:00:33,720 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:00:33,721 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:00:33,721 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:00:33,722 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:00:33,722 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:00:33,722 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:00:33,723 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:00:33,723 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:00:33,723 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:00:33,723 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:00:33,776 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:00:33,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:00:33,794 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:00:33,796 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:00:33,796 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:00:33,797 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label14_false-unreach-call_false-termination.c [2018-11-07 18:00:33,871 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28f6651bc/ea5e518bc32a4df280c462d209e01e65/FLAG535a1b8a1 [2018-11-07 18:00:34,484 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:00:34,485 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label14_false-unreach-call_false-termination.c [2018-11-07 18:00:34,511 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28f6651bc/ea5e518bc32a4df280c462d209e01e65/FLAG535a1b8a1 [2018-11-07 18:00:34,528 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28f6651bc/ea5e518bc32a4df280c462d209e01e65 [2018-11-07 18:00:34,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:00:34,542 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:00:34,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:00:34,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:00:34,548 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:00:34,549 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:00:34" (1/1) ... [2018-11-07 18:00:34,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e1557a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:00:34, skipping insertion in model container [2018-11-07 18:00:34,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:00:34" (1/1) ... [2018-11-07 18:00:34,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:00:34,646 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:00:35,139 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:00:35,144 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:00:35,306 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:00:35,327 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:00:35,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:00:35 WrapperNode [2018-11-07 18:00:35,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:00:35,329 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:00:35,329 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:00:35,330 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:00:35,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:00:35" (1/1) ... [2018-11-07 18:00:35,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:00:35" (1/1) ... [2018-11-07 18:00:35,490 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:00:35,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:00:35,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:00:35,491 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:00:35,504 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:00:35" (1/1) ... [2018-11-07 18:00:35,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:00:35" (1/1) ... [2018-11-07 18:00:35,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:00:35" (1/1) ... [2018-11-07 18:00:35,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:00:35" (1/1) ... [2018-11-07 18:00:35,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:00:35" (1/1) ... [2018-11-07 18:00:35,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:00:35" (1/1) ... [2018-11-07 18:00:35,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:00:35" (1/1) ... [2018-11-07 18:00:35,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:00:35,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:00:35,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:00:35,617 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:00:35,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:00:35" (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 18:00:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:00:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:00:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:00:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:00:35,699 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:00:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:00:35,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:00:35,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:00:35,700 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:00:39,564 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:00:39,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:00:39 BoogieIcfgContainer [2018-11-07 18:00:39,565 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:00:39,567 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:00:39,567 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:00:39,571 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:00:39,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:00:34" (1/3) ... [2018-11-07 18:00:39,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295f6dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:00:39, skipping insertion in model container [2018-11-07 18:00:39,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:00:35" (2/3) ... [2018-11-07 18:00:39,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@295f6dbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:00:39, skipping insertion in model container [2018-11-07 18:00:39,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:00:39" (3/3) ... [2018-11-07 18:00:39,575 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label14_false-unreach-call_false-termination.c [2018-11-07 18:00:39,586 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:00:39,595 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:00:39,615 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:00:39,654 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:00:39,654 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:00:39,654 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:00:39,654 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:00:39,655 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:00:39,655 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:00:39,655 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:00:39,655 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:00:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 18:00:39,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-11-07 18:00:39,688 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:00:39,690 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] [2018-11-07 18:00:39,692 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:00:39,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:00:39,698 INFO L82 PathProgramCache]: Analyzing trace with hash 707504249, now seen corresponding path program 1 times [2018-11-07 18:00:39,700 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:00:39,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:00:39,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:00:39,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:00:39,752 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:00:39,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:00:40,114 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 18:00:40,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:00:40,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:00:40,120 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:00:40,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:00:40,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:00:40,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:00:40,144 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 18:00:43,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:00:43,079 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-11-07 18:00:43,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:00:43,082 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-11-07 18:00:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:00:43,106 INFO L225 Difference]: With dead ends: 894 [2018-11-07 18:00:43,106 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 18:00:43,116 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:00:43,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 18:00:43,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-11-07 18:00:43,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-11-07 18:00:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1007 transitions. [2018-11-07 18:00:43,228 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1007 transitions. Word has length 33 [2018-11-07 18:00:43,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:00:43,228 INFO L480 AbstractCegarLoop]: Abstraction has 633 states and 1007 transitions. [2018-11-07 18:00:43,229 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:00:43,229 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1007 transitions. [2018-11-07 18:00:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 18:00:43,246 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:00:43,246 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:43,247 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:00:43,247 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:00:43,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1856067133, now seen corresponding path program 1 times [2018-11-07 18:00:43,248 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:00:43,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:00:43,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:00:43,254 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:00:43,254 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:00:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:00:43,564 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:00:43,564 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:00:43,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:00:43,565 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:00:43,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:00:43,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:00:43,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:00:43,568 INFO L87 Difference]: Start difference. First operand 633 states and 1007 transitions. Second operand 4 states. [2018-11-07 18:00:46,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:00:46,727 INFO L93 Difference]: Finished difference Result 2358 states and 3924 transitions. [2018-11-07 18:00:46,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:00:46,728 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2018-11-07 18:00:46,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:00:46,747 INFO L225 Difference]: With dead ends: 2358 [2018-11-07 18:00:46,747 INFO L226 Difference]: Without dead ends: 1731 [2018-11-07 18:00:46,754 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:00:46,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-11-07 18:00:46,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-11-07 18:00:46,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-11-07 18:00:46,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2619 transitions. [2018-11-07 18:00:46,855 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2619 transitions. Word has length 146 [2018-11-07 18:00:46,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:00:46,856 INFO L480 AbstractCegarLoop]: Abstraction has 1731 states and 2619 transitions. [2018-11-07 18:00:46,856 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:00:46,856 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2619 transitions. [2018-11-07 18:00:46,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-11-07 18:00:46,874 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:00:46,874 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:00:46,875 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:00:46,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:00:46,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1192336806, now seen corresponding path program 1 times [2018-11-07 18:00:46,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:00:46,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:00:46,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:00:46,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:00:46,877 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:00:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:00:47,308 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-11-07 18:00:47,615 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 52 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:00:47,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:00:47,616 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:00:47,617 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-11-07 18:00:47,619 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [165], [167], [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], [510], [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], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:00:47,676 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:00:47,677 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:00:48,256 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:00:48,435 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:00:48,439 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:00:48,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:00:48,482 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:00:49,042 INFO L227 lantSequenceWeakener]: Weakened 211 states. On average, predicates are now at 77.58% of their original sizes. [2018-11-07 18:00:49,042 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:00:49,383 INFO L415 sIntCurrentIteration]: We unified 219 AI predicates to 219 [2018-11-07 18:00:49,383 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:00:49,384 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:00:49,385 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-07 18:00:49,385 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:00:49,385 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 18:00:49,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 18:00:49,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 18:00:49,389 INFO L87 Difference]: Start difference. First operand 1731 states and 2619 transitions. Second operand 7 states. [2018-11-07 18:01:06,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:01:06,044 INFO L93 Difference]: Finished difference Result 3641 states and 5473 transitions. [2018-11-07 18:01:06,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:01:06,044 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2018-11-07 18:01:06,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:01:06,058 INFO L225 Difference]: With dead ends: 3641 [2018-11-07 18:01:06,058 INFO L226 Difference]: Without dead ends: 1916 [2018-11-07 18:01:06,065 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 220 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:01:06,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-11-07 18:01:06,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-11-07 18:01:06,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-11-07 18:01:06,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2810 transitions. [2018-11-07 18:01:06,127 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2810 transitions. Word has length 220 [2018-11-07 18:01:06,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:01:06,128 INFO L480 AbstractCegarLoop]: Abstraction has 1914 states and 2810 transitions. [2018-11-07 18:01:06,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 18:01:06,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2810 transitions. [2018-11-07 18:01:06,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-11-07 18:01:06,137 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:01:06,137 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:01:06,138 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:01:06,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:01:06,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1747869460, now seen corresponding path program 1 times [2018-11-07 18:01:06,138 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:01:06,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:01:06,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:01:06,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:01:06,140 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:01:06,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:01:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 166 proven. 140 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:01:07,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:01:07,182 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:01:07,183 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 306 with the following transitions: [2018-11-07 18:01:07,183 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [165], [167], [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], [510], [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], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:01:07,191 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:01:07,191 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:01:07,260 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:01:07,451 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:01:07,451 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:01:07,490 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:01:07,491 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:01:08,047 INFO L227 lantSequenceWeakener]: Weakened 90 states. On average, predicates are now at 78.46% of their original sizes. [2018-11-07 18:01:08,048 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:01:09,370 INFO L415 sIntCurrentIteration]: We unified 304 AI predicates to 304 [2018-11-07 18:01:09,370 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:01:09,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:01:09,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [12] total 35 [2018-11-07 18:01:09,371 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:01:09,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 18:01:09,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 18:01:09,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2018-11-07 18:01:09,373 INFO L87 Difference]: Start difference. First operand 1914 states and 2810 transitions. Second operand 25 states. [2018-11-07 18:01:31,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:01:31,878 INFO L93 Difference]: Finished difference Result 4355 states and 6371 transitions. [2018-11-07 18:01:31,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-07 18:01:31,879 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 305 [2018-11-07 18:01:31,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:01:31,894 INFO L225 Difference]: With dead ends: 4355 [2018-11-07 18:01:31,894 INFO L226 Difference]: Without dead ends: 2630 [2018-11-07 18:01:31,901 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 320 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 401 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=292, Invalid=1348, Unknown=0, NotChecked=0, Total=1640 [2018-11-07 18:01:31,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2018-11-07 18:01:31,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2622. [2018-11-07 18:01:31,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2622 states. [2018-11-07 18:01:31,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2622 states to 2622 states and 3551 transitions. [2018-11-07 18:01:31,978 INFO L78 Accepts]: Start accepts. Automaton has 2622 states and 3551 transitions. Word has length 305 [2018-11-07 18:01:31,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:01:31,979 INFO L480 AbstractCegarLoop]: Abstraction has 2622 states and 3551 transitions. [2018-11-07 18:01:31,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-07 18:01:31,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2622 states and 3551 transitions. [2018-11-07 18:01:31,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-11-07 18:01:31,988 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:01:31,988 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:01:31,989 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:01:31,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:01:31,989 INFO L82 PathProgramCache]: Analyzing trace with hash 930742976, now seen corresponding path program 1 times [2018-11-07 18:01:31,989 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:01:31,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:01:31,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:01:31,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:01:31,991 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:01:32,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:01:33,080 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 91 proven. 241 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:01:33,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:01:33,080 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:01:33,081 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 332 with the following transitions: [2018-11-07 18:01:33,081 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [165], [167], [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], [510], [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], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:01:33,086 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:01:33,087 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:01:33,127 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:01:33,240 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:01:33,241 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:01:33,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:01:33,246 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:01:33,599 INFO L227 lantSequenceWeakener]: Weakened 106 states. On average, predicates are now at 78.38% of their original sizes. [2018-11-07 18:01:33,599 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:01:34,156 INFO L415 sIntCurrentIteration]: We unified 330 AI predicates to 330 [2018-11-07 18:01:34,156 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:01:34,156 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:01:34,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [15] total 34 [2018-11-07 18:01:34,157 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:01:34,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 18:01:34,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 18:01:34,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-07 18:01:34,159 INFO L87 Difference]: Start difference. First operand 2622 states and 3551 transitions. Second operand 21 states. [2018-11-07 18:01:50,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:01:50,004 INFO L93 Difference]: Finished difference Result 4720 states and 6649 transitions. [2018-11-07 18:01:50,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-07 18:01:50,005 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 331 [2018-11-07 18:01:50,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:01:50,023 INFO L225 Difference]: With dead ends: 4720 [2018-11-07 18:01:50,023 INFO L226 Difference]: Without dead ends: 2995 [2018-11-07 18:01:50,031 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 348 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=280, Invalid=1202, Unknown=0, NotChecked=0, Total=1482 [2018-11-07 18:01:50,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2995 states. [2018-11-07 18:01:50,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2995 to 2990. [2018-11-07 18:01:50,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2990 states. [2018-11-07 18:01:50,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2990 states to 2990 states and 3947 transitions. [2018-11-07 18:01:50,127 INFO L78 Accepts]: Start accepts. Automaton has 2990 states and 3947 transitions. Word has length 331 [2018-11-07 18:01:50,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:01:50,128 INFO L480 AbstractCegarLoop]: Abstraction has 2990 states and 3947 transitions. [2018-11-07 18:01:50,128 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 18:01:50,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2990 states and 3947 transitions. [2018-11-07 18:01:50,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2018-11-07 18:01:50,146 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:01:50,146 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:01:50,147 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:01:50,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:01:50,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1452156471, now seen corresponding path program 1 times [2018-11-07 18:01:50,147 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:01:50,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:01:50,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:01:50,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:01:50,148 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:01:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:01:50,461 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 18:01:50,617 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 216 proven. 111 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-11-07 18:01:50,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:01:50,618 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:01:50,618 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 359 with the following transitions: [2018-11-07 18:01:50,619 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [165], [167], [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], [630], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:01:50,622 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:01:50,622 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:01:50,739 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:01:51,481 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:01:51,481 INFO L272 AbstractInterpreter]: Visited 120 different actions 357 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 18:01:51,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:01:51,483 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:01:51,807 INFO L227 lantSequenceWeakener]: Weakened 355 states. On average, predicates are now at 80.22% of their original sizes. [2018-11-07 18:01:51,807 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:01:51,890 INFO L415 sIntCurrentIteration]: We unified 357 AI predicates to 357 [2018-11-07 18:01:51,890 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:01:51,891 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:01:51,891 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-07 18:01:51,891 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:01:51,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 18:01:51,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 18:01:51,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:01:51,892 INFO L87 Difference]: Start difference. First operand 2990 states and 3947 transitions. Second operand 10 states. [2018-11-07 18:01:58,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:01:58,793 INFO L93 Difference]: Finished difference Result 5291 states and 7516 transitions. [2018-11-07 18:01:58,793 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 18:01:58,793 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 358 [2018-11-07 18:01:58,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:01:58,808 INFO L225 Difference]: With dead ends: 5291 [2018-11-07 18:01:58,808 INFO L226 Difference]: Without dead ends: 3566 [2018-11-07 18:01:58,815 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 365 GetRequests, 349 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-11-07 18:01:58,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3566 states. [2018-11-07 18:01:58,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3566 to 3549. [2018-11-07 18:01:58,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3549 states. [2018-11-07 18:01:58,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3549 states to 3549 states and 4666 transitions. [2018-11-07 18:01:58,897 INFO L78 Accepts]: Start accepts. Automaton has 3549 states and 4666 transitions. Word has length 358 [2018-11-07 18:01:58,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:01:58,898 INFO L480 AbstractCegarLoop]: Abstraction has 3549 states and 4666 transitions. [2018-11-07 18:01:58,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 18:01:58,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3549 states and 4666 transitions. [2018-11-07 18:01:58,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2018-11-07 18:01:58,911 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:01:58,911 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:01:58,911 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:01:58,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:01:58,912 INFO L82 PathProgramCache]: Analyzing trace with hash -707265043, now seen corresponding path program 1 times [2018-11-07 18:01:58,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:01:58,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:01:58,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:01:58,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:01:58,913 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:01:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:01:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 269 proven. 73 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-11-07 18:01:59,330 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:01:59,330 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:01:59,330 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 406 with the following transitions: [2018-11-07 18:01:59,331 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [165], [167], [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], [510], [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], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:01:59,333 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:01:59,333 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:01:59,369 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:01:59,941 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:01:59,942 INFO L272 AbstractInterpreter]: Visited 122 different actions 608 times. Merged at 9 different actions 45 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 18:01:59,987 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:01:59,989 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:01:59,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:01:59,989 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 18:02:00,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:02:00,004 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:02:00,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:02:00,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:02:00,728 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 454 proven. 2 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2018-11-07 18:02:00,729 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:02:01,640 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 269 proven. 73 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-11-07 18:02:01,662 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:02:01,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2018-11-07 18:02:01,662 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:02:01,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 18:02:01,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 18:02:01,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-11-07 18:02:01,664 INFO L87 Difference]: Start difference. First operand 3549 states and 4666 transitions. Second operand 10 states. [2018-11-07 18:02:08,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:02:08,544 INFO L93 Difference]: Finished difference Result 11817 states and 18317 transitions. [2018-11-07 18:02:08,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 18:02:08,544 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 405 [2018-11-07 18:02:08,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:02:08,596 INFO L225 Difference]: With dead ends: 11817 [2018-11-07 18:02:08,596 INFO L226 Difference]: Without dead ends: 9533 [2018-11-07 18:02:08,618 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 850 GetRequests, 822 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=225, Invalid=531, Unknown=0, NotChecked=0, Total=756 [2018-11-07 18:02:08,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9533 states. [2018-11-07 18:02:08,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9533 to 9479. [2018-11-07 18:02:08,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9479 states. [2018-11-07 18:02:08,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9479 states to 9479 states and 12986 transitions. [2018-11-07 18:02:08,884 INFO L78 Accepts]: Start accepts. Automaton has 9479 states and 12986 transitions. Word has length 405 [2018-11-07 18:02:08,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:02:08,885 INFO L480 AbstractCegarLoop]: Abstraction has 9479 states and 12986 transitions. [2018-11-07 18:02:08,885 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 18:02:08,885 INFO L276 IsEmpty]: Start isEmpty. Operand 9479 states and 12986 transitions. [2018-11-07 18:02:08,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2018-11-07 18:02:08,904 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:02:08,904 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 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] [2018-11-07 18:02:08,905 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:02:08,905 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:02:08,905 INFO L82 PathProgramCache]: Analyzing trace with hash 980409914, now seen corresponding path program 1 times [2018-11-07 18:02:08,905 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:02:08,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:02:08,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:02:08,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:02:08,907 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:02:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:02:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 197 proven. 155 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2018-11-07 18:02:09,780 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:02:09,780 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:02:09,780 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 417 with the following transitions: [2018-11-07 18:02:09,780 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [165], [167], [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], [510], [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], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:02:09,783 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:02:09,784 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:02:09,858 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:02:10,248 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:02:10,249 INFO L272 AbstractInterpreter]: Visited 123 different actions 367 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 18:02:10,285 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:02:10,285 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:02:11,261 INFO L227 lantSequenceWeakener]: Weakened 130 states. On average, predicates are now at 78.09% of their original sizes. [2018-11-07 18:02:11,261 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:02:12,652 INFO L415 sIntCurrentIteration]: We unified 415 AI predicates to 415 [2018-11-07 18:02:12,652 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:02:12,653 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:02:12,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 18:02:12,653 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:02:12,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:02:12,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:02:12,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:02:12,655 INFO L87 Difference]: Start difference. First operand 9479 states and 12986 transitions. Second operand 23 states. [2018-11-07 18:02:35,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:02:35,319 INFO L93 Difference]: Finished difference Result 19961 states and 27331 transitions. [2018-11-07 18:02:35,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-07 18:02:35,319 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 416 [2018-11-07 18:02:35,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:02:35,369 INFO L225 Difference]: With dead ends: 19961 [2018-11-07 18:02:35,369 INFO L226 Difference]: Without dead ends: 11747 [2018-11-07 18:02:35,404 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 436 GetRequests, 391 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=369, Invalid=1523, Unknown=0, NotChecked=0, Total=1892 [2018-11-07 18:02:35,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11747 states. [2018-11-07 18:02:35,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11747 to 11085. [2018-11-07 18:02:35,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11085 states. [2018-11-07 18:02:35,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11085 states to 11085 states and 14692 transitions. [2018-11-07 18:02:35,677 INFO L78 Accepts]: Start accepts. Automaton has 11085 states and 14692 transitions. Word has length 416 [2018-11-07 18:02:35,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:02:35,678 INFO L480 AbstractCegarLoop]: Abstraction has 11085 states and 14692 transitions. [2018-11-07 18:02:35,678 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 18:02:35,679 INFO L276 IsEmpty]: Start isEmpty. Operand 11085 states and 14692 transitions. [2018-11-07 18:02:35,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2018-11-07 18:02:35,712 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:02:35,712 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-07 18:02:35,713 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:02:35,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:02:35,713 INFO L82 PathProgramCache]: Analyzing trace with hash -775820871, now seen corresponding path program 1 times [2018-11-07 18:02:35,714 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:02:35,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:02:35,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:02:35,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:02:35,715 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:02:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:02:36,302 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 18:02:36,516 WARN L179 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-11-07 18:02:37,765 INFO L134 CoverageAnalysis]: Checked inductivity of 657 backedges. 237 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:02:37,765 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:02:37,765 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:02:37,765 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 492 with the following transitions: [2018-11-07 18:02:37,766 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [165], [167], [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], [510], [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], [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], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 18:02:37,769 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:02:37,769 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:02:37,799 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:02:38,888 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:02:38,888 INFO L272 AbstractInterpreter]: Visited 174 different actions 868 times. Merged at 9 different actions 45 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 18:02:38,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:02:38,895 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:02:38,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:02:38,895 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 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 [2018-11-07 18:02:38,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:02:38,905 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:02:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:02:39,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:02:42,676 WARN L179 SmtUtils]: Spent 2.43 s on a formula simplification. DAG size of input: 864 DAG size of output: 25 Received shutdown request... [2018-11-07 18:04:27,302 WARN L187 SmtUtils]: Removed 5 from assertion stack [2018-11-07 18:04:27,303 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 18:04:27,504 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:04:27,504 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:04:27,510 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:04:27,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:04:27 BoogieIcfgContainer [2018-11-07 18:04:27,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:04:27,512 INFO L168 Benchmark]: Toolchain (without parser) took 232970.80 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -874.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 18:04:27,513 INFO L168 Benchmark]: CDTParser took 0.20 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 18:04:27,513 INFO L168 Benchmark]: CACSL2BoogieTranslator took 784.93 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 18:04:27,514 INFO L168 Benchmark]: Boogie Procedure Inliner took 161.34 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -805.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2018-11-07 18:04:27,515 INFO L168 Benchmark]: Boogie Preprocessor took 124.21 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-11-07 18:04:27,516 INFO L168 Benchmark]: RCFGBuilder took 3950.21 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 120.2 MB). Peak memory consumption was 120.2 MB. Max. memory is 7.1 GB. [2018-11-07 18:04:27,517 INFO L168 Benchmark]: TraceAbstraction took 227944.26 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -245.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 18:04:27,522 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 784.93 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 161.34 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -805.7 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.21 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3950.21 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 120.2 MB). Peak memory consumption was 120.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227944.26 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -245.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 82). Cancelled while BasicCegarLoop was analyzing trace of length 492 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1017. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 227.8s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 97.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1486 SDtfs, 13162 SDslu, 2069 SDs, 0 SdLazy, 17617 SolverSat, 2805 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 33.4s Time, PredicateUnifierStatistics: 10 DeclaredPredicates, 2550 GetRequests, 2375 SyntacticMatches, 5 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1375 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11085occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.4s AbstIntTime, 7 AbstIntIterations, 5 AbstIntStrong, 0.9969774195293659 AbsIntWeakeningRatio, 0.09846153846153846 AbsIntAvgWeakeningVarsNumRemoved, 16.06523076923077 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 748 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.8s InterpolantComputationTime, 2619 NumberOfCodeBlocks, 2619 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 3014 ConstructedInterpolants, 0 QuantifiedInterpolants, 5676691 SizeOfPredicates, 0 NumberOfNonLiveVariables, 662 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 2709/3573 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown