java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label13_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 20:42:10,717 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 20:42:10,720 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 20:42:10,738 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 20:42:10,739 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 20:42:10,740 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 20:42:10,741 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 20:42:10,743 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 20:42:10,745 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 20:42:10,753 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 20:42:10,756 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 20:42:10,756 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 20:42:10,757 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 20:42:10,758 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 20:42:10,761 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 20:42:10,762 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 20:42:10,763 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 20:42:10,764 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 20:42:10,770 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 20:42:10,772 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 20:42:10,775 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 20:42:10,777 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 20:42:10,781 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 20:42:10,781 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 20:42:10,781 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 20:42:10,782 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 20:42:10,784 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 20:42:10,785 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 20:42:10,785 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 20:42:10,788 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 20:42:10,790 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 20:42:10,791 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 20:42:10,791 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 20:42:10,791 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 20:42:10,794 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 20:42:10,795 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 20:42:10,795 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 20:42:10,820 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 20:42:10,821 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 20:42:10,822 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 20:42:10,822 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 20:42:10,822 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 20:42:10,822 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 20:42:10,823 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 20:42:10,823 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 20:42:10,823 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 20:42:10,823 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 20:42:10,823 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 20:42:10,824 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 20:42:10,824 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 20:42:10,825 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 20:42:10,826 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 20:42:10,826 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 20:42:10,826 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 20:42:10,826 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 20:42:10,827 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 20:42:10,827 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 20:42:10,827 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 20:42:10,827 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 20:42:10,827 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 20:42:10,829 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 20:42:10,829 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 20:42:10,829 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 20:42:10,829 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 20:42:10,830 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 20:42:10,830 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 20:42:10,830 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 20:42:10,830 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 20:42:10,830 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 20:42:10,831 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 20:42:10,831 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 20:42:10,831 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 20:42:10,902 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 20:42:10,919 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 20:42:10,924 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 20:42:10,926 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 20:42:10,926 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 20:42:10,927 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label13_true-unreach-call.c [2018-11-07 20:42:10,993 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23ff5086a/c69a31d6b0114eac8113c9127e3b0231/FLAG909855e86 [2018-11-07 20:42:11,739 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 20:42:11,741 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label13_true-unreach-call.c [2018-11-07 20:42:11,762 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23ff5086a/c69a31d6b0114eac8113c9127e3b0231/FLAG909855e86 [2018-11-07 20:42:11,778 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23ff5086a/c69a31d6b0114eac8113c9127e3b0231 [2018-11-07 20:42:11,790 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 20:42:11,791 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 20:42:11,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 20:42:11,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 20:42:11,797 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 20:42:11,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:11" (1/1) ... [2018-11-07 20:42:11,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36bd1723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:11, skipping insertion in model container [2018-11-07 20:42:11,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:42:11" (1/1) ... [2018-11-07 20:42:11,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 20:42:11,906 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 20:42:12,763 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:42:12,768 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 20:42:13,059 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 20:42:13,083 INFO L193 MainTranslator]: Completed translation [2018-11-07 20:42:13,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:13 WrapperNode [2018-11-07 20:42:13,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 20:42:13,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 20:42:13,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 20:42:13,086 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 20:42:13,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:13" (1/1) ... [2018-11-07 20:42:13,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:13" (1/1) ... [2018-11-07 20:42:13,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 20:42:13,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 20:42:13,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 20:42:13,365 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 20:42:13,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:13" (1/1) ... [2018-11-07 20:42:13,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:13" (1/1) ... [2018-11-07 20:42:13,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:13" (1/1) ... [2018-11-07 20:42:13,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:13" (1/1) ... [2018-11-07 20:42:13,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:13" (1/1) ... [2018-11-07 20:42:13,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:13" (1/1) ... [2018-11-07 20:42:13,520 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:13" (1/1) ... [2018-11-07 20:42:13,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 20:42:13,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 20:42:13,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 20:42:13,538 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 20:42:13,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:13" (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 20:42:13,604 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 20:42:13,604 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 20:42:13,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 20:42:13,604 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 20:42:13,604 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 20:42:13,605 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 20:42:13,605 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 20:42:13,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 20:42:13,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 20:42:13,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 20:42:13,605 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 20:42:19,627 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 20:42:19,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:19 BoogieIcfgContainer [2018-11-07 20:42:19,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 20:42:19,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 20:42:19,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 20:42:19,633 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 20:42:19,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:42:11" (1/3) ... [2018-11-07 20:42:19,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d96653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:19, skipping insertion in model container [2018-11-07 20:42:19,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:42:13" (2/3) ... [2018-11-07 20:42:19,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52d96653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:42:19, skipping insertion in model container [2018-11-07 20:42:19,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:42:19" (3/3) ... [2018-11-07 20:42:19,638 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label13_true-unreach-call.c [2018-11-07 20:42:19,648 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 20:42:19,658 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 20:42:19,677 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 20:42:19,724 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 20:42:19,725 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 20:42:19,725 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 20:42:19,725 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 20:42:19,725 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 20:42:19,725 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 20:42:19,726 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 20:42:19,726 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 20:42:19,758 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 20:42:19,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-07 20:42:19,775 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:42:19,776 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 20:42:19,779 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:42:19,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:42:19,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1672823047, now seen corresponding path program 1 times [2018-11-07 20:42:19,787 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:42:19,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:42:19,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:42:19,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:42:19,834 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:42:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:42:20,321 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:42:20,460 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 20:42:20,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:42:20,467 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 20:42:20,467 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:42:20,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 20:42:20,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 20:42:20,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 20:42:20,518 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-11-07 20:42:24,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:42:24,380 INFO L93 Difference]: Finished difference Result 1192 states and 2147 transitions. [2018-11-07 20:42:24,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 20:42:24,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2018-11-07 20:42:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:42:24,416 INFO L225 Difference]: With dead ends: 1192 [2018-11-07 20:42:24,417 INFO L226 Difference]: Without dead ends: 752 [2018-11-07 20:42:24,427 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 20:42:24,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2018-11-07 20:42:24,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2018-11-07 20:42:24,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 752 states. [2018-11-07 20:42:24,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 1322 transitions. [2018-11-07 20:42:24,528 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 1322 transitions. Word has length 55 [2018-11-07 20:42:24,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:42:24,529 INFO L480 AbstractCegarLoop]: Abstraction has 752 states and 1322 transitions. [2018-11-07 20:42:24,529 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 20:42:24,529 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 1322 transitions. [2018-11-07 20:42:24,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 20:42:24,538 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:42:24,538 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:42:24,538 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:42:24,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:42:24,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1273885140, now seen corresponding path program 1 times [2018-11-07 20:42:24,539 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:42:24,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:42:24,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:42:24,541 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:42:24,541 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:42:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:42:25,069 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 20:42:25,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:42:25,069 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:42:25,071 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 137 with the following transitions: [2018-11-07 20:42:25,073 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:42:25,126 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:42:25,127 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:42:25,645 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:42:25,646 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 20:42:25,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:42:25,690 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:42:26,039 INFO L227 lantSequenceWeakener]: Weakened 130 states. On average, predicates are now at 78.5% of their original sizes. [2018-11-07 20:42:26,039 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:42:26,252 INFO L415 sIntCurrentIteration]: We unified 135 AI predicates to 135 [2018-11-07 20:42:26,252 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:42:26,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:42:26,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-11-07 20:42:26,253 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:42:26,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 20:42:26,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 20:42:26,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 20:42:26,257 INFO L87 Difference]: Start difference. First operand 752 states and 1322 transitions. Second operand 7 states. [2018-11-07 20:42:28,888 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:42:55,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:42:55,468 INFO L93 Difference]: Finished difference Result 1808 states and 3199 transitions. [2018-11-07 20:42:55,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 20:42:55,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2018-11-07 20:42:55,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:42:55,477 INFO L225 Difference]: With dead ends: 1808 [2018-11-07 20:42:55,477 INFO L226 Difference]: Without dead ends: 1062 [2018-11-07 20:42:55,481 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 136 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 20:42:55,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2018-11-07 20:42:55,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 1060. [2018-11-07 20:42:55,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1060 states. [2018-11-07 20:42:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1637 transitions. [2018-11-07 20:42:55,526 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1637 transitions. Word has length 136 [2018-11-07 20:42:55,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:42:55,526 INFO L480 AbstractCegarLoop]: Abstraction has 1060 states and 1637 transitions. [2018-11-07 20:42:55,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 20:42:55,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1637 transitions. [2018-11-07 20:42:55,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-07 20:42:55,533 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:42:55,533 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:42:55,533 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:42:55,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:42:55,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1916304126, now seen corresponding path program 1 times [2018-11-07 20:42:55,534 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:42:55,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:42:55,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:42:55,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:42:55,536 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:42:55,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:42:56,341 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2018-11-07 20:42:56,890 WARN L179 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-11-07 20:42:57,213 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 48 proven. 122 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 20:42:57,214 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:42:57,214 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:42:57,214 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 233 with the following transitions: [2018-11-07 20:42:57,214 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:42:57,221 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:42:57,222 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:42:57,314 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:42:58,592 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:42:58,592 INFO L272 AbstractInterpreter]: Visited 104 different actions 692 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 20:42:58,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:42:58,603 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:42:59,138 INFO L227 lantSequenceWeakener]: Weakened 38 states. On average, predicates are now at 77.75% of their original sizes. [2018-11-07 20:42:59,138 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:43:01,828 INFO L415 sIntCurrentIteration]: We unified 231 AI predicates to 231 [2018-11-07 20:43:01,829 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:43:01,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:43:01,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [13] total 26 [2018-11-07 20:43:01,830 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:43:01,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 20:43:01,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 20:43:01,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2018-11-07 20:43:01,832 INFO L87 Difference]: Start difference. First operand 1060 states and 1637 transitions. Second operand 15 states. [2018-11-07 20:43:31,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:43:31,052 INFO L93 Difference]: Finished difference Result 3274 states and 5396 transitions. [2018-11-07 20:43:31,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 20:43:31,053 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 232 [2018-11-07 20:43:31,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:43:31,069 INFO L225 Difference]: With dead ends: 3274 [2018-11-07 20:43:31,069 INFO L226 Difference]: Without dead ends: 2528 [2018-11-07 20:43:31,073 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 237 GetRequests, 133 SyntacticMatches, 85 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:43:31,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2018-11-07 20:43:31,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 1998. [2018-11-07 20:43:31,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1998 states. [2018-11-07 20:43:31,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1998 states to 1998 states and 2617 transitions. [2018-11-07 20:43:31,130 INFO L78 Accepts]: Start accepts. Automaton has 1998 states and 2617 transitions. Word has length 232 [2018-11-07 20:43:31,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:43:31,131 INFO L480 AbstractCegarLoop]: Abstraction has 1998 states and 2617 transitions. [2018-11-07 20:43:31,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 20:43:31,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1998 states and 2617 transitions. [2018-11-07 20:43:31,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2018-11-07 20:43:31,141 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:43:31,141 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:43:31,142 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:43:31,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:43:31,142 INFO L82 PathProgramCache]: Analyzing trace with hash -456190975, now seen corresponding path program 1 times [2018-11-07 20:43:31,143 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:43:31,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:43:31,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:43:31,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:43:31,144 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:43:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:43:32,170 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 9 proven. 90 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-07 20:43:32,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:43:32,170 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:43:32,171 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 412 with the following transitions: [2018-11-07 20:43:32,172 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:43:32,181 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:43:32,182 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:43:32,357 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:43:32,677 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:43:32,678 INFO L272 AbstractInterpreter]: Visited 283 different actions 560 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 20:43:32,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:43:32,716 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:43:33,345 INFO L227 lantSequenceWeakener]: Weakened 75 states. On average, predicates are now at 82.12% of their original sizes. [2018-11-07 20:43:33,346 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:43:34,150 INFO L415 sIntCurrentIteration]: We unified 410 AI predicates to 410 [2018-11-07 20:43:34,151 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:43:34,151 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:43:34,151 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [7] total 26 [2018-11-07 20:43:34,151 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:43:34,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 20:43:34,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 20:43:34,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-07 20:43:34,153 INFO L87 Difference]: Start difference. First operand 1998 states and 2617 transitions. Second operand 21 states. [2018-11-07 20:44:17,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:44:17,530 INFO L93 Difference]: Finished difference Result 3900 states and 6042 transitions. [2018-11-07 20:44:17,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-07 20:44:17,530 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 411 [2018-11-07 20:44:17,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:44:17,546 INFO L225 Difference]: With dead ends: 3900 [2018-11-07 20:44:17,546 INFO L226 Difference]: Without dead ends: 3154 [2018-11-07 20:44:17,552 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 428 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=279, Invalid=1203, Unknown=0, NotChecked=0, Total=1482 [2018-11-07 20:44:17,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3154 states. [2018-11-07 20:44:17,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3154 to 2914. [2018-11-07 20:44:17,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2914 states. [2018-11-07 20:44:17,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 3599 transitions. [2018-11-07 20:44:17,626 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 3599 transitions. Word has length 411 [2018-11-07 20:44:17,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:44:17,627 INFO L480 AbstractCegarLoop]: Abstraction has 2914 states and 3599 transitions. [2018-11-07 20:44:17,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 20:44:17,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 3599 transitions. [2018-11-07 20:44:17,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2018-11-07 20:44:17,639 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:44:17,640 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:44:17,640 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:44:17,641 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:44:17,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1172935315, now seen corresponding path program 1 times [2018-11-07 20:44:17,641 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:44:17,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:44:17,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:44:17,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:44:17,642 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:44:17,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:44:18,123 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 20:44:19,270 WARN L179 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2018-11-07 20:44:20,516 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 165 proven. 193 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 20:44:20,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:44:20,516 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:44:20,517 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 482 with the following transitions: [2018-11-07 20:44:20,517 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:44:20,523 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:44:20,523 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:44:20,675 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:44:21,125 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:44:21,125 INFO L272 AbstractInterpreter]: Visited 284 different actions 851 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 20:44:21,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:44:21,134 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:44:21,541 INFO L227 lantSequenceWeakener]: Weakened 478 states. On average, predicates are now at 80.37% of their original sizes. [2018-11-07 20:44:21,541 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:44:21,645 INFO L415 sIntCurrentIteration]: We unified 480 AI predicates to 480 [2018-11-07 20:44:21,646 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:44:21,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:44:21,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2018-11-07 20:44:21,646 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:44:21,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:44:21,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:44:21,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:44:21,648 INFO L87 Difference]: Start difference. First operand 2914 states and 3599 transitions. Second operand 10 states. [2018-11-07 20:44:40,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:44:40,196 INFO L93 Difference]: Finished difference Result 4318 states and 5848 transitions. [2018-11-07 20:44:40,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 20:44:40,196 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 481 [2018-11-07 20:44:40,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:44:40,211 INFO L225 Difference]: With dead ends: 4318 [2018-11-07 20:44:40,211 INFO L226 Difference]: Without dead ends: 3572 [2018-11-07 20:44:40,216 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 487 GetRequests, 472 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-11-07 20:44:40,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3572 states. [2018-11-07 20:44:40,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3572 to 3568. [2018-11-07 20:44:40,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3568 states. [2018-11-07 20:44:40,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3568 states to 3568 states and 4320 transitions. [2018-11-07 20:44:40,314 INFO L78 Accepts]: Start accepts. Automaton has 3568 states and 4320 transitions. Word has length 481 [2018-11-07 20:44:40,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:44:40,315 INFO L480 AbstractCegarLoop]: Abstraction has 3568 states and 4320 transitions. [2018-11-07 20:44:40,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:44:40,315 INFO L276 IsEmpty]: Start isEmpty. Operand 3568 states and 4320 transitions. [2018-11-07 20:44:40,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2018-11-07 20:44:40,331 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:44:40,332 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:44:40,332 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:44:40,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:44:40,333 INFO L82 PathProgramCache]: Analyzing trace with hash -2066472572, now seen corresponding path program 1 times [2018-11-07 20:44:40,333 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:44:40,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:44:40,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:44:40,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:44:40,334 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:44:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:44:41,540 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 282 proven. 22 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2018-11-07 20:44:41,541 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:44:41,541 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:44:41,541 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 524 with the following transitions: [2018-11-07 20:44:41,542 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:44:41,546 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:44:41,547 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:44:42,487 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:44:43,521 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:44:43,522 INFO L272 AbstractInterpreter]: Visited 284 different actions 1128 times. Merged at 7 different actions 25 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 20:44:43,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:44:43,529 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:44:44,018 INFO L227 lantSequenceWeakener]: Weakened 520 states. On average, predicates are now at 80.34% of their original sizes. [2018-11-07 20:44:44,019 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:44:44,132 INFO L415 sIntCurrentIteration]: We unified 522 AI predicates to 522 [2018-11-07 20:44:44,132 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:44:44,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:44:44,133 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [10] total 18 [2018-11-07 20:44:44,133 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:44:44,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 20:44:44,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 20:44:44,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 20:44:44,134 INFO L87 Difference]: Start difference. First operand 3568 states and 4320 transitions. Second operand 10 states. [2018-11-07 20:44:57,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:44:57,144 INFO L93 Difference]: Finished difference Result 4684 states and 6286 transitions. [2018-11-07 20:44:57,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 20:44:57,144 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 523 [2018-11-07 20:44:57,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:44:57,160 INFO L225 Difference]: With dead ends: 4684 [2018-11-07 20:44:57,161 INFO L226 Difference]: Without dead ends: 3938 [2018-11-07 20:44:57,165 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 530 GetRequests, 514 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 20:44:57,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2018-11-07 20:44:57,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3920. [2018-11-07 20:44:57,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3920 states. [2018-11-07 20:44:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3920 states to 3920 states and 4817 transitions. [2018-11-07 20:44:57,259 INFO L78 Accepts]: Start accepts. Automaton has 3920 states and 4817 transitions. Word has length 523 [2018-11-07 20:44:57,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:44:57,260 INFO L480 AbstractCegarLoop]: Abstraction has 3920 states and 4817 transitions. [2018-11-07 20:44:57,260 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 20:44:57,260 INFO L276 IsEmpty]: Start isEmpty. Operand 3920 states and 4817 transitions. [2018-11-07 20:44:57,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2018-11-07 20:44:57,271 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:44:57,271 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 20:44:57,272 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:44:57,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:44:57,272 INFO L82 PathProgramCache]: Analyzing trace with hash 460886185, now seen corresponding path program 1 times [2018-11-07 20:44:57,272 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:44:57,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:44:57,273 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:44:57,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:44:57,274 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:44:57,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 20:44:57,964 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2018-11-07 20:44:57,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 20:44:57,964 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 20:44:57,965 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 525 with the following transitions: [2018-11-07 20:44:57,965 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [413], [415], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1167], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 20:44:57,969 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 20:44:57,970 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 20:44:58,120 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 20:44:58,528 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 20:44:58,528 INFO L272 AbstractInterpreter]: Visited 283 different actions 846 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 20:44:58,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:44:58,537 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 20:44:59,889 INFO L227 lantSequenceWeakener]: Weakened 188 states. On average, predicates are now at 80.92% of their original sizes. [2018-11-07 20:44:59,889 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 20:45:00,463 INFO L415 sIntCurrentIteration]: We unified 523 AI predicates to 523 [2018-11-07 20:45:00,463 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 20:45:00,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 20:45:00,463 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [5] total 23 [2018-11-07 20:45:00,463 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:45:00,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 20:45:00,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 20:45:00,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2018-11-07 20:45:00,465 INFO L87 Difference]: Start difference. First operand 3920 states and 4817 transitions. Second operand 20 states. [2018-11-07 20:45:45,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 20:45:45,513 INFO L93 Difference]: Finished difference Result 7494 states and 10902 transitions. [2018-11-07 20:45:45,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-07 20:45:45,514 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 524 [2018-11-07 20:45:45,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 20:45:45,539 INFO L225 Difference]: With dead ends: 7494 [2018-11-07 20:45:45,539 INFO L226 Difference]: Without dead ends: 6396 [2018-11-07 20:45:45,548 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 534 GetRequests, 505 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2018-11-07 20:45:45,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6396 states. [2018-11-07 20:45:45,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6396 to 5439. [2018-11-07 20:45:45,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5439 states. [2018-11-07 20:45:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5439 states to 5439 states and 6562 transitions. [2018-11-07 20:45:45,683 INFO L78 Accepts]: Start accepts. Automaton has 5439 states and 6562 transitions. Word has length 524 [2018-11-07 20:45:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 20:45:45,684 INFO L480 AbstractCegarLoop]: Abstraction has 5439 states and 6562 transitions. [2018-11-07 20:45:45,685 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 20:45:45,685 INFO L276 IsEmpty]: Start isEmpty. Operand 5439 states and 6562 transitions. [2018-11-07 20:45:45,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2018-11-07 20:45:45,698 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 20:45:45,698 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:45:45,699 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 20:45:45,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 20:45:45,699 INFO L82 PathProgramCache]: Analyzing trace with hash -364224974, now seen corresponding path program 1 times [2018-11-07 20:45:45,699 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 20:45:45,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:45,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 20:45:45,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 20:45:45,707 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 20:45:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-11-07 20:45:47,084 INFO L134 CoverageAnalysis]: Checked inductivity of 460 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-11-07 20:45:47,085 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 20:45:47,085 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 20:45:47,085 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 20:45:47,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 20:45:47,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 20:45:47,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 20:45:47,086 INFO L87 Difference]: Start difference. First operand 5439 states and 6562 transitions. Second operand 4 states. [2018-11-07 20:45:47,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 20:45:47,087 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 20:45:47,092 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 20:45:47,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:45:47 BoogieIcfgContainer [2018-11-07 20:45:47,093 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 20:45:47,093 INFO L168 Benchmark]: Toolchain (without parser) took 215303.19 ms. Allocated memory was 1.5 GB in the beginning and 5.4 GB in the end (delta: 3.9 GB). Free memory was 1.4 GB in the beginning and 3.8 GB in the end (delta: -2.4 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 20:45:47,095 INFO L168 Benchmark]: CDTParser took 0.22 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 20:45:47,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1292.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-11-07 20:45:47,096 INFO L168 Benchmark]: Boogie Procedure Inliner took 279.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -907.0 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. [2018-11-07 20:45:47,097 INFO L168 Benchmark]: Boogie Preprocessor took 172.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-11-07 20:45:47,098 INFO L168 Benchmark]: RCFGBuilder took 6090.86 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 305.2 MB). Peak memory consumption was 305.2 MB. Max. memory is 7.1 GB. [2018-11-07 20:45:47,099 INFO L168 Benchmark]: TraceAbstraction took 207462.97 ms. Allocated memory was 2.3 GB in the beginning and 5.4 GB in the end (delta: 3.1 GB). Free memory was 1.9 GB in the beginning and 3.8 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 20:45:47,104 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1292.31 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 279.56 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 761.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -907.0 MB). Peak memory consumption was 31.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 172.65 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6090.86 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 305.2 MB). Peak memory consumption was 305.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207462.97 ms. Allocated memory was 2.3 GB in the beginning and 5.4 GB in the end (delta: 3.1 GB). Free memory was 1.9 GB in the beginning and 3.8 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 151). Cancelled while BasicCegarLoop was constructing difference of abstraction (5439states) and FLOYD_HOARE automaton (currently 2 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 207.3s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 182.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2784 SDtfs, 16064 SDslu, 2929 SDs, 0 SdLazy, 20277 SolverSat, 3844 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.8s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 2363 GetRequests, 2151 SyntacticMatches, 87 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1373 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5439occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.7s AbstIntTime, 6 AbstIntIterations, 6 AbstIntStrong, 0.9979153007718348 AbsIntWeakeningRatio, 0.07040417209908735 AbsIntAvgWeakeningVarsNumRemoved, 18.585832246849197 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 7 MinimizatonAttempts, 1751 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 2906 NumberOfCodeBlocks, 2906 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2898 ConstructedInterpolants, 0 QuantifiedInterpolants, 6814466 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1376/1935 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown