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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label28_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:23:48,781 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:23:48,785 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:23:48,802 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:23:48,802 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:23:48,803 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:23:48,804 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:23:48,806 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:23:48,808 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:23:48,809 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:23:48,810 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:23:48,810 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:23:48,811 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:23:48,812 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:23:48,813 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:23:48,814 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:23:48,815 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:23:48,816 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:23:48,819 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:23:48,820 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:23:48,821 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:23:48,823 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:23:48,825 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 06:23:48,834 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 06:23:48,852 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:23:48,853 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:23:48,854 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:23:48,854 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:23:48,855 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:23:48,858 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:23:48,858 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:23:48,858 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:23:48,858 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:23:48,859 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:23:48,859 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:23:48,859 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:23:48,859 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:23:48,859 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:23:48,862 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:23:48,862 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:23:48,862 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:23:48,863 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:23:48,864 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:23:48,865 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:23:48,865 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:23:48,865 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:23:48,865 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:23:48,866 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:23:48,866 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:23:48,866 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:23:48,866 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:23:48,867 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:23:48,867 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:23:48,867 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:23:48,867 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:23:48,867 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:23:48,868 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:23:48,868 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:23:48,868 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:23:48,869 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:23:48,926 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:23:48,942 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:23:48,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:23:48,948 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:23:48,948 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:23:48,949 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label28_false-unreach-call_false-termination.c [2018-11-07 06:23:49,025 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc4e6a292/8b2b1f4d850f462dbeff9e07c4f6dcaa/FLAG8aac518c1 [2018-11-07 06:23:49,705 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:23:49,706 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label28_false-unreach-call_false-termination.c [2018-11-07 06:23:49,732 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc4e6a292/8b2b1f4d850f462dbeff9e07c4f6dcaa/FLAG8aac518c1 [2018-11-07 06:23:49,749 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc4e6a292/8b2b1f4d850f462dbeff9e07c4f6dcaa [2018-11-07 06:23:49,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:23:49,763 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:23:49,765 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:23:49,765 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:23:49,773 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:23:49,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:23:49" (1/1) ... [2018-11-07 06:23:49,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b29a96e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:49, skipping insertion in model container [2018-11-07 06:23:49,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:23:49" (1/1) ... [2018-11-07 06:23:49,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:23:49,847 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:23:50,357 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:23:50,362 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:23:50,538 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:23:50,568 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:23:50,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:50 WrapperNode [2018-11-07 06:23:50,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:23:50,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:23:50,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:23:50,570 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:23:50,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:50" (1/1) ... [2018-11-07 06:23:50,712 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:50" (1/1) ... [2018-11-07 06:23:50,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:23:50,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:23:50,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:23:50,726 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:23:50,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:50" (1/1) ... [2018-11-07 06:23:50,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:50" (1/1) ... [2018-11-07 06:23:50,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:50" (1/1) ... [2018-11-07 06:23:50,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:50" (1/1) ... [2018-11-07 06:23:50,793 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:50" (1/1) ... [2018-11-07 06:23:50,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:50" (1/1) ... [2018-11-07 06:23:50,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:50" (1/1) ... [2018-11-07 06:23:50,829 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:23:50,830 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:23:50,830 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:23:50,830 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:23:50,831 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:50" (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 06:23:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:23:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:23:50,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:23:50,900 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:23:50,900 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:23:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:23:50,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:23:50,901 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:23:50,901 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:23:54,676 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:23:54,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:23:54 BoogieIcfgContainer [2018-11-07 06:23:54,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:23:54,678 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:23:54,678 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:23:54,682 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:23:54,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:23:49" (1/3) ... [2018-11-07 06:23:54,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1cdbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:23:54, skipping insertion in model container [2018-11-07 06:23:54,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:50" (2/3) ... [2018-11-07 06:23:54,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1cdbfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:23:54, skipping insertion in model container [2018-11-07 06:23:54,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:23:54" (3/3) ... [2018-11-07 06:23:54,686 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label28_false-unreach-call_false-termination.c [2018-11-07 06:23:54,697 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:23:54,707 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:23:54,726 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:23:54,767 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:23:54,767 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:23:54,767 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:23:54,767 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:23:54,768 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:23:54,768 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:23:54,768 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:23:54,768 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:23:54,797 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 06:23:54,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-07 06:23:54,804 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:54,805 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:23:54,808 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:54,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:54,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2018061625, now seen corresponding path program 1 times [2018-11-07 06:23:54,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:54,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:54,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:54,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:54,868 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:55,152 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 06:23:55,154 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:23:55,155 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:23:55,155 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:55,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:23:55,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:23:55,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:23:55,176 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 06:23:58,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:23:58,478 INFO L93 Difference]: Finished difference Result 894 states and 1610 transitions. [2018-11-07 06:23:58,485 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:23:58,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2018-11-07 06:23:58,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:23:58,516 INFO L225 Difference]: With dead ends: 894 [2018-11-07 06:23:58,517 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 06:23:58,525 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 06:23:58,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 06:23:58,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 434. [2018-11-07 06:23:58,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 06:23:58,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 662 transitions. [2018-11-07 06:23:58,616 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 662 transitions. Word has length 17 [2018-11-07 06:23:58,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:23:58,617 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 662 transitions. [2018-11-07 06:23:58,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:23:58,617 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 662 transitions. [2018-11-07 06:23:58,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-07 06:23:58,623 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:58,623 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:23:58,624 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:58,624 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:58,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1257410928, now seen corresponding path program 1 times [2018-11-07 06:23:58,624 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:58,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:58,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:58,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:58,626 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:23:59,169 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:23:59,169 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 06:23:59,169 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:59,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:23:59,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:23:59,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:23:59,172 INFO L87 Difference]: Start difference. First operand 434 states and 662 transitions. Second operand 6 states. [2018-11-07 06:24:03,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:24:03,532 INFO L93 Difference]: Finished difference Result 1421 states and 2196 transitions. [2018-11-07 06:24:03,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 06:24:03,535 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-11-07 06:24:03,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:24:03,546 INFO L225 Difference]: With dead ends: 1421 [2018-11-07 06:24:03,546 INFO L226 Difference]: Without dead ends: 993 [2018-11-07 06:24:03,550 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:24:03,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2018-11-07 06:24:03,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 940. [2018-11-07 06:24:03,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 940 states. [2018-11-07 06:24:03,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1360 transitions. [2018-11-07 06:24:03,611 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1360 transitions. Word has length 101 [2018-11-07 06:24:03,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:24:03,612 INFO L480 AbstractCegarLoop]: Abstraction has 940 states and 1360 transitions. [2018-11-07 06:24:03,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:24:03,612 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1360 transitions. [2018-11-07 06:24:03,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-11-07 06:24:03,617 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:24:03,618 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:24:03,618 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:24:03,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:03,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1352215460, now seen corresponding path program 1 times [2018-11-07 06:24:03,619 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:24:03,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:03,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:03,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:03,620 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:24:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:03,803 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:24:03,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:24:03,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 06:24:03,804 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:24:03,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:24:03,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:24:03,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:24:03,805 INFO L87 Difference]: Start difference. First operand 940 states and 1360 transitions. Second operand 3 states. [2018-11-07 06:24:05,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:24:05,748 INFO L93 Difference]: Finished difference Result 2567 states and 3827 transitions. [2018-11-07 06:24:05,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:24:05,749 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2018-11-07 06:24:05,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:24:05,761 INFO L225 Difference]: With dead ends: 2567 [2018-11-07 06:24:05,762 INFO L226 Difference]: Without dead ends: 1633 [2018-11-07 06:24:05,768 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:24:05,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2018-11-07 06:24:05,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1633. [2018-11-07 06:24:05,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1633 states. [2018-11-07 06:24:05,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 2213 transitions. [2018-11-07 06:24:05,821 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 2213 transitions. Word has length 127 [2018-11-07 06:24:05,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:24:05,822 INFO L480 AbstractCegarLoop]: Abstraction has 1633 states and 2213 transitions. [2018-11-07 06:24:05,822 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:24:05,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 2213 transitions. [2018-11-07 06:24:05,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-07 06:24:05,827 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:24:05,827 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:24:05,828 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:24:05,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:05,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1698418821, now seen corresponding path program 1 times [2018-11-07 06:24:05,828 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:24:05,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:05,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:05,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:05,830 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:24:05,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:06,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:24:06,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:24:06,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 06:24:06,098 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:24:06,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:24:06,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:24:06,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:24:06,100 INFO L87 Difference]: Start difference. First operand 1633 states and 2213 transitions. Second operand 6 states. [2018-11-07 06:24:07,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:24:07,823 INFO L93 Difference]: Finished difference Result 3851 states and 5415 transitions. [2018-11-07 06:24:07,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 06:24:07,824 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-11-07 06:24:07,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:24:07,839 INFO L225 Difference]: With dead ends: 3851 [2018-11-07 06:24:07,839 INFO L226 Difference]: Without dead ends: 2224 [2018-11-07 06:24:07,847 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:24:07,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2224 states. [2018-11-07 06:24:07,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2224 to 2202. [2018-11-07 06:24:07,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2202 states. [2018-11-07 06:24:07,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 2925 transitions. [2018-11-07 06:24:07,915 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 2925 transitions. Word has length 158 [2018-11-07 06:24:07,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:24:07,916 INFO L480 AbstractCegarLoop]: Abstraction has 2202 states and 2925 transitions. [2018-11-07 06:24:07,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:24:07,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 2925 transitions. [2018-11-07 06:24:07,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-11-07 06:24:07,920 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:24:07,920 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:24:07,921 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:24:07,921 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:07,921 INFO L82 PathProgramCache]: Analyzing trace with hash 723896290, now seen corresponding path program 1 times [2018-11-07 06:24:07,921 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:24:07,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:07,923 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:07,923 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:07,923 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:24:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:08,538 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:24:08,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:24:08,539 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:24:08,540 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 187 with the following transitions: [2018-11-07 06:24:08,542 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [551], [554], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:24:08,588 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:24:08,589 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:24:09,295 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:24:09,296 INFO L272 AbstractInterpreter]: Visited 93 different actions 179 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 06:24:09,340 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:09,340 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:24:09,790 INFO L227 lantSequenceWeakener]: Weakened 183 states. On average, predicates are now at 77.35% of their original sizes. [2018-11-07 06:24:09,790 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:24:10,384 INFO L415 sIntCurrentIteration]: We unified 185 AI predicates to 185 [2018-11-07 06:24:10,385 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:24:10,386 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:24:10,386 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-11-07 06:24:10,386 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:24:10,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:24:10,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:24:10,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:24:10,388 INFO L87 Difference]: Start difference. First operand 2202 states and 2925 transitions. Second operand 10 states. [2018-11-07 06:25:20,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:20,986 INFO L93 Difference]: Finished difference Result 5477 states and 7097 transitions. [2018-11-07 06:25:20,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 06:25:20,986 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 186 [2018-11-07 06:25:20,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:21,005 INFO L225 Difference]: With dead ends: 5477 [2018-11-07 06:25:21,006 INFO L226 Difference]: Without dead ends: 3281 [2018-11-07 06:25:21,016 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 194 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:25:21,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3281 states. [2018-11-07 06:25:21,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3281 to 3276. [2018-11-07 06:25:21,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3276 states. [2018-11-07 06:25:21,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3276 states to 3276 states and 4072 transitions. [2018-11-07 06:25:21,129 INFO L78 Accepts]: Start accepts. Automaton has 3276 states and 4072 transitions. Word has length 186 [2018-11-07 06:25:21,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:21,130 INFO L480 AbstractCegarLoop]: Abstraction has 3276 states and 4072 transitions. [2018-11-07 06:25:21,130 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:25:21,130 INFO L276 IsEmpty]: Start isEmpty. Operand 3276 states and 4072 transitions. [2018-11-07 06:25:21,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-11-07 06:25:21,141 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:21,142 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:25:21,143 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:21,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:21,143 INFO L82 PathProgramCache]: Analyzing trace with hash 570694376, now seen corresponding path program 1 times [2018-11-07 06:25:21,143 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:21,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:21,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:21,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:21,145 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:21,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:21,843 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 118 proven. 110 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-07 06:25:21,844 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:21,844 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:25:21,844 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-11-07 06:25:21,845 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [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], [750], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:25:21,854 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:25:21,857 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:25:22,260 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:25:22,260 INFO L272 AbstractInterpreter]: Visited 144 different actions 574 times. Merged at 8 different actions 34 times. Never widened. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:25:22,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:22,304 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:25:22,305 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:22,305 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 06:25:22,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:22,321 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:25:22,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:22,467 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:25:22,870 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 298 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-07 06:25:22,870 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:25:23,182 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 06:25:23,816 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 118 proven. 110 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-07 06:25:23,848 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:25:23,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 06:25:23,849 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:25:23,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:25:23,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:25:23,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:25:23,851 INFO L87 Difference]: Start difference. First operand 3276 states and 4072 transitions. Second operand 9 states. [2018-11-07 06:25:30,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:30,952 INFO L93 Difference]: Finished difference Result 8362 states and 11246 transitions. [2018-11-07 06:25:30,953 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-07 06:25:30,953 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 347 [2018-11-07 06:25:30,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:30,972 INFO L225 Difference]: With dead ends: 8362 [2018-11-07 06:25:30,973 INFO L226 Difference]: Without dead ends: 3895 [2018-11-07 06:25:30,996 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 744 GetRequests, 711 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2018-11-07 06:25:31,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3895 states. [2018-11-07 06:25:31,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3895 to 3574. [2018-11-07 06:25:31,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3574 states. [2018-11-07 06:25:31,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3574 states to 3574 states and 4384 transitions. [2018-11-07 06:25:31,101 INFO L78 Accepts]: Start accepts. Automaton has 3574 states and 4384 transitions. Word has length 347 [2018-11-07 06:25:31,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:31,102 INFO L480 AbstractCegarLoop]: Abstraction has 3574 states and 4384 transitions. [2018-11-07 06:25:31,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 06:25:31,102 INFO L276 IsEmpty]: Start isEmpty. Operand 3574 states and 4384 transitions. [2018-11-07 06:25:31,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2018-11-07 06:25:31,109 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:31,110 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-11-07 06:25:31,110 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:31,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:31,111 INFO L82 PathProgramCache]: Analyzing trace with hash 884222617, now seen corresponding path program 1 times [2018-11-07 06:25:31,111 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:31,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:31,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:31,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:31,112 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:31,768 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 06:25:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 317 proven. 149 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-07 06:25:32,560 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:32,560 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:25:32,560 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 396 with the following transitions: [2018-11-07 06:25:32,561 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [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 06:25:32,566 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:25:32,567 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:25:39,362 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:25:39,363 INFO L272 AbstractInterpreter]: Visited 122 different actions 484 times. Merged at 9 different actions 32 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:25:39,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:39,374 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:25:39,374 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:39,374 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 06:25:39,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:39,384 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:25:39,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:39,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:25:39,848 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-11-07 06:25:39,848 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:25:39,968 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 06:25:40,089 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 06:25:40,328 WARN L179 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-11-07 06:25:40,814 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 06:25:41,256 INFO L134 CoverageAnalysis]: Checked inductivity of 537 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2018-11-07 06:25:41,277 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:25:41,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 06:25:41,277 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:25:41,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:25:41,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:25:41,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:25:41,279 INFO L87 Difference]: Start difference. First operand 3574 states and 4384 transitions. Second operand 17 states. [2018-11-07 06:25:48,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:48,863 INFO L93 Difference]: Finished difference Result 8334 states and 10776 transitions. [2018-11-07 06:25:48,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-11-07 06:25:48,863 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 395 [2018-11-07 06:25:48,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:48,885 INFO L225 Difference]: With dead ends: 8334 [2018-11-07 06:25:48,886 INFO L226 Difference]: Without dead ends: 3947 [2018-11-07 06:25:48,918 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 801 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 589 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=521, Invalid=1735, Unknown=0, NotChecked=0, Total=2256 [2018-11-07 06:25:48,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3947 states. [2018-11-07 06:25:49,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3947 to 3751. [2018-11-07 06:25:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3751 states. [2018-11-07 06:25:49,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 4300 transitions. [2018-11-07 06:25:49,023 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 4300 transitions. Word has length 395 [2018-11-07 06:25:49,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:49,024 INFO L480 AbstractCegarLoop]: Abstraction has 3751 states and 4300 transitions. [2018-11-07 06:25:49,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:25:49,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 4300 transitions. [2018-11-07 06:25:49,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 537 [2018-11-07 06:25:49,037 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:49,038 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2018-11-07 06:25:49,038 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:49,038 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:49,039 INFO L82 PathProgramCache]: Analyzing trace with hash 196769436, now seen corresponding path program 1 times [2018-11-07 06:25:49,039 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:49,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:49,040 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:49,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:49,040 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:49,993 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 383 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-11-07 06:25:49,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:49,993 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:25:49,994 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 537 with the following transitions: [2018-11-07 06:25:49,994 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:25:50,007 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:25:50,008 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:25:55,997 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:25:55,997 INFO L272 AbstractInterpreter]: Visited 191 different actions 765 times. Merged at 9 different actions 37 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:25:56,035 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:56,035 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:25:56,035 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:56,036 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:25:56,050 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:56,050 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:25:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:56,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:25:56,517 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 383 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-11-07 06:25:56,518 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:25:56,938 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 383 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-11-07 06:25:56,960 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:25:56,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 9 [2018-11-07 06:25:56,961 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:25:56,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 06:25:56,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 06:25:56,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:25:56,962 INFO L87 Difference]: Start difference. First operand 3751 states and 4300 transitions. Second operand 7 states. [2018-11-07 06:25:59,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:59,237 INFO L93 Difference]: Finished difference Result 9845 states and 12894 transitions. [2018-11-07 06:25:59,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-07 06:25:59,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 536 [2018-11-07 06:25:59,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:59,282 INFO L225 Difference]: With dead ends: 9845 [2018-11-07 06:25:59,282 INFO L226 Difference]: Without dead ends: 6468 [2018-11-07 06:25:59,309 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1087 GetRequests, 1074 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2018-11-07 06:25:59,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6468 states. [2018-11-07 06:25:59,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6468 to 5955. [2018-11-07 06:25:59,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5955 states. [2018-11-07 06:25:59,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5955 states to 5955 states and 7022 transitions. [2018-11-07 06:25:59,512 INFO L78 Accepts]: Start accepts. Automaton has 5955 states and 7022 transitions. Word has length 536 [2018-11-07 06:25:59,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:59,513 INFO L480 AbstractCegarLoop]: Abstraction has 5955 states and 7022 transitions. [2018-11-07 06:25:59,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 06:25:59,513 INFO L276 IsEmpty]: Start isEmpty. Operand 5955 states and 7022 transitions. [2018-11-07 06:25:59,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 582 [2018-11-07 06:25:59,528 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:59,529 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 06:25:59,529 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:59,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:59,530 INFO L82 PathProgramCache]: Analyzing trace with hash -99068179, now seen corresponding path program 1 times [2018-11-07 06:25:59,530 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:59,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:59,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:59,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:59,531 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:59,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:59,992 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 06:26:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 37 proven. 339 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2018-11-07 06:26:00,855 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:00,855 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:26:00,856 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 582 with the following transitions: [2018-11-07 06:26:00,856 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [866], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:26:00,862 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:26:00,862 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:06,312 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:26:06,312 INFO L272 AbstractInterpreter]: Visited 191 different actions 765 times. Merged at 9 different actions 37 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:26:06,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:06,322 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:26:06,322 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:06,322 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:26:06,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:06,335 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:26:06,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:06,490 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:26:06,875 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [2018-11-07 06:26:06,875 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:26:07,566 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 706 trivial. 0 not checked. [2018-11-07 06:26:07,588 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:26:07,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 10 [2018-11-07 06:26:07,589 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:26:07,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:26:07,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:26:07,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:26:07,590 INFO L87 Difference]: Start difference. First operand 5955 states and 7022 transitions. Second operand 3 states. [2018-11-07 06:26:08,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:26:08,732 INFO L93 Difference]: Finished difference Result 13655 states and 16714 transitions. [2018-11-07 06:26:08,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:26:08,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 581 [2018-11-07 06:26:08,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:26:08,790 INFO L225 Difference]: With dead ends: 13655 [2018-11-07 06:26:08,790 INFO L226 Difference]: Without dead ends: 8074 [2018-11-07 06:26:08,821 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1172 GetRequests, 1163 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:26:08,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8074 states. [2018-11-07 06:26:09,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8074 to 8074. [2018-11-07 06:26:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8074 states. [2018-11-07 06:26:09,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8074 states to 8074 states and 9641 transitions. [2018-11-07 06:26:09,064 INFO L78 Accepts]: Start accepts. Automaton has 8074 states and 9641 transitions. Word has length 581 [2018-11-07 06:26:09,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:26:09,065 INFO L480 AbstractCegarLoop]: Abstraction has 8074 states and 9641 transitions. [2018-11-07 06:26:09,066 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:26:09,066 INFO L276 IsEmpty]: Start isEmpty. Operand 8074 states and 9641 transitions. [2018-11-07 06:26:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2018-11-07 06:26:09,090 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:09,091 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 06:26:09,091 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:09,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:09,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1363433604, now seen corresponding path program 1 times [2018-11-07 06:26:09,092 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:09,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:09,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:09,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:09,093 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:09,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 1023 trivial. 0 not checked. [2018-11-07 06:26:09,755 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:26:09,755 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:26:09,756 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:26:09,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:26:09,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:26:09,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:26:09,757 INFO L87 Difference]: Start difference. First operand 8074 states and 9641 transitions. Second operand 4 states. [2018-11-07 06:26:11,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:26:11,511 INFO L93 Difference]: Finished difference Result 17385 states and 21346 transitions. [2018-11-07 06:26:11,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:26:11,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 661 [2018-11-07 06:26:11,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:26:11,563 INFO L225 Difference]: With dead ends: 17385 [2018-11-07 06:26:11,563 INFO L226 Difference]: Without dead ends: 9685 [2018-11-07 06:26:11,603 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:26:11,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9685 states. [2018-11-07 06:26:11,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9685 to 9500. [2018-11-07 06:26:11,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9500 states. [2018-11-07 06:26:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9500 states to 9500 states and 11127 transitions. [2018-11-07 06:26:11,820 INFO L78 Accepts]: Start accepts. Automaton has 9500 states and 11127 transitions. Word has length 661 [2018-11-07 06:26:11,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:26:11,821 INFO L480 AbstractCegarLoop]: Abstraction has 9500 states and 11127 transitions. [2018-11-07 06:26:11,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:26:11,821 INFO L276 IsEmpty]: Start isEmpty. Operand 9500 states and 11127 transitions. [2018-11-07 06:26:11,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2018-11-07 06:26:11,833 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:11,834 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 06:26:11,834 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:11,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:11,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1898124868, now seen corresponding path program 1 times [2018-11-07 06:26:11,835 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:11,835 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:11,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:11,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:11,836 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:13,225 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:26:13,469 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-07 06:26:14,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 407 proven. 504 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-11-07 06:26:14,566 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:14,566 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:26:14,566 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 666 with the following transitions: [2018-11-07 06:26:14,567 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [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], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:26:14,570 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:26:14,570 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:20,148 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:26:20,148 INFO L272 AbstractInterpreter]: Visited 192 different actions 770 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 06:26:20,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:20,154 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:26:20,154 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:20,154 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:26:20,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:20,163 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:26:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:20,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:26:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 763 proven. 2 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2018-11-07 06:26:20,981 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:26:21,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1101 backedges. 453 proven. 83 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2018-11-07 06:26:21,575 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:26:21,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 19 [2018-11-07 06:26:21,576 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:26:21,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:26:21,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:26:21,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:26:21,578 INFO L87 Difference]: Start difference. First operand 9500 states and 11127 transitions. Second operand 17 states. [2018-11-07 06:26:25,072 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-11-07 06:26:25,287 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2018-11-07 06:26:25,740 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2018-11-07 06:26:26,376 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2018-11-07 06:26:26,643 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2018-11-07 06:26:27,532 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 51 [2018-11-07 06:26:28,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:26:28,656 INFO L93 Difference]: Finished difference Result 21868 states and 26069 transitions. [2018-11-07 06:26:28,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-07 06:26:28,657 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 665 [2018-11-07 06:26:28,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:26:28,708 INFO L225 Difference]: With dead ends: 21868 [2018-11-07 06:26:28,708 INFO L226 Difference]: Without dead ends: 11979 [2018-11-07 06:26:28,746 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1399 GetRequests, 1351 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 562 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=532, Invalid=1918, Unknown=0, NotChecked=0, Total=2450 [2018-11-07 06:26:28,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11979 states. [2018-11-07 06:26:28,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11979 to 11587. [2018-11-07 06:26:28,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11587 states. [2018-11-07 06:26:28,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11587 states to 11587 states and 13319 transitions. [2018-11-07 06:26:28,983 INFO L78 Accepts]: Start accepts. Automaton has 11587 states and 13319 transitions. Word has length 665 [2018-11-07 06:26:28,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:26:28,984 INFO L480 AbstractCegarLoop]: Abstraction has 11587 states and 13319 transitions. [2018-11-07 06:26:28,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:26:28,984 INFO L276 IsEmpty]: Start isEmpty. Operand 11587 states and 13319 transitions. [2018-11-07 06:26:28,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2018-11-07 06:26:28,997 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:28,997 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:26:28,998 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:28,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:28,998 INFO L82 PathProgramCache]: Analyzing trace with hash 254110114, now seen corresponding path program 1 times [2018-11-07 06:26:28,998 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:28,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:28,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:28,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:28,999 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:31,544 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 602 proven. 713 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2018-11-07 06:26:31,545 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:31,545 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:26:31,545 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 781 with the following transitions: [2018-11-07 06:26:31,546 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [550], [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], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [854], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:26:31,550 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:26:31,550 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:36,853 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:26:36,854 INFO L272 AbstractInterpreter]: Visited 193 different actions 776 times. Merged at 10 different actions 40 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 06:26:36,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:36,860 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:26:36,860 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:36,860 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:26:36,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:36,869 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:26:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:37,052 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:26:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 975 proven. 2 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2018-11-07 06:26:37,838 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:26:38,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1649 backedges. 586 proven. 83 refuted. 0 times theorem prover too weak. 980 trivial. 0 not checked. [2018-11-07 06:26:38,449 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:26:38,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 22 [2018-11-07 06:26:38,449 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:26:38,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 06:26:38,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 06:26:38,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2018-11-07 06:26:38,452 INFO L87 Difference]: Start difference. First operand 11587 states and 13319 transitions. Second operand 20 states. [2018-11-07 06:26:48,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:26:48,185 INFO L93 Difference]: Finished difference Result 21159 states and 24400 transitions. [2018-11-07 06:26:48,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2018-11-07 06:26:48,185 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 780 [2018-11-07 06:26:48,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:26:48,207 INFO L225 Difference]: With dead ends: 21159 [2018-11-07 06:26:48,207 INFO L226 Difference]: Without dead ends: 6801 [2018-11-07 06:26:48,246 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1694 GetRequests, 1611 SyntacticMatches, 3 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2037 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1081, Invalid=5561, Unknown=0, NotChecked=0, Total=6642 [2018-11-07 06:26:48,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6801 states. [2018-11-07 06:26:48,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6801 to 6749. [2018-11-07 06:26:48,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6749 states. [2018-11-07 06:26:48,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6749 states to 6749 states and 7181 transitions. [2018-11-07 06:26:48,359 INFO L78 Accepts]: Start accepts. Automaton has 6749 states and 7181 transitions. Word has length 780 [2018-11-07 06:26:48,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:26:48,360 INFO L480 AbstractCegarLoop]: Abstraction has 6749 states and 7181 transitions. [2018-11-07 06:26:48,360 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 06:26:48,360 INFO L276 IsEmpty]: Start isEmpty. Operand 6749 states and 7181 transitions. [2018-11-07 06:26:48,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 961 [2018-11-07 06:26:48,373 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:48,374 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:26:48,374 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:48,374 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:48,374 INFO L82 PathProgramCache]: Analyzing trace with hash 709095912, now seen corresponding path program 1 times [2018-11-07 06:26:48,375 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:48,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:48,376 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:48,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:48,376 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2733 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 2632 trivial. 0 not checked. [2018-11-07 06:26:49,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:26:49,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:26:49,462 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:26:49,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:26:49,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:26:49,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:26:49,463 INFO L87 Difference]: Start difference. First operand 6749 states and 7181 transitions. Second operand 4 states. [2018-11-07 06:26:50,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:26:50,466 INFO L93 Difference]: Finished difference Result 13824 states and 14898 transitions. [2018-11-07 06:26:50,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:26:50,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 960 [2018-11-07 06:26:50,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:26:50,487 INFO L225 Difference]: With dead ends: 13824 [2018-11-07 06:26:50,488 INFO L226 Difference]: Without dead ends: 6299 [2018-11-07 06:26:50,503 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 1 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 06:26:50,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6299 states. [2018-11-07 06:26:50,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6299 to 6271. [2018-11-07 06:26:50,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6271 states. [2018-11-07 06:26:50,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6271 states to 6271 states and 6544 transitions. [2018-11-07 06:26:50,601 INFO L78 Accepts]: Start accepts. Automaton has 6271 states and 6544 transitions. Word has length 960 [2018-11-07 06:26:50,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:26:50,602 INFO L480 AbstractCegarLoop]: Abstraction has 6271 states and 6544 transitions. [2018-11-07 06:26:50,603 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:26:50,603 INFO L276 IsEmpty]: Start isEmpty. Operand 6271 states and 6544 transitions. [2018-11-07 06:26:50,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2018-11-07 06:26:50,619 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:50,620 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:26:50,621 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:50,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:50,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1971677799, now seen corresponding path program 1 times [2018-11-07 06:26:50,621 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:50,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:50,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:50,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:50,623 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:50,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:52,723 INFO L134 CoverageAnalysis]: Checked inductivity of 3328 backedges. 896 proven. 537 refuted. 0 times theorem prover too weak. 1895 trivial. 0 not checked. [2018-11-07 06:26:52,724 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:52,724 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:26:52,724 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1033 with the following transitions: [2018-11-07 06:26:52,725 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [514], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [550], [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], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:26:52,728 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:26:52,729 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:58,055 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:26:58,055 INFO L272 AbstractInterpreter]: Visited 196 different actions 791 times. Merged at 12 different actions 43 times. Widened at 1 different actions 1 times. Found 16 fixpoints after 6 different actions. Largest state had 24 variables. [2018-11-07 06:26:58,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:58,064 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:26:58,064 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:58,064 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:26:58,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:58,076 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:26:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:58,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:26:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3328 backedges. 1274 proven. 2 refuted. 0 times theorem prover too weak. 2052 trivial. 0 not checked. [2018-11-07 06:26:58,963 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:26:59,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3328 backedges. 666 proven. 74 refuted. 0 times theorem prover too weak. 2588 trivial. 0 not checked. [2018-11-07 06:26:59,921 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:26:59,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 06:26:59,922 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:26:59,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:26:59,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:26:59,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:26:59,924 INFO L87 Difference]: Start difference. First operand 6271 states and 6544 transitions. Second operand 17 states. [2018-11-07 06:27:06,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:06,522 INFO L93 Difference]: Finished difference Result 10675 states and 11264 transitions. [2018-11-07 06:27:06,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-11-07 06:27:06,522 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1032 [2018-11-07 06:27:06,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:06,537 INFO L225 Difference]: With dead ends: 10675 [2018-11-07 06:27:06,537 INFO L226 Difference]: Without dead ends: 5766 [2018-11-07 06:27:06,547 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2142 GetRequests, 2091 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=578, Invalid=2178, Unknown=0, NotChecked=0, Total=2756 [2018-11-07 06:27:06,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5766 states. [2018-11-07 06:27:06,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5766 to 5403. [2018-11-07 06:27:06,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5403 states. [2018-11-07 06:27:06,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 5618 transitions. [2018-11-07 06:27:06,633 INFO L78 Accepts]: Start accepts. Automaton has 5403 states and 5618 transitions. Word has length 1032 [2018-11-07 06:27:06,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:06,634 INFO L480 AbstractCegarLoop]: Abstraction has 5403 states and 5618 transitions. [2018-11-07 06:27:06,634 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:27:06,634 INFO L276 IsEmpty]: Start isEmpty. Operand 5403 states and 5618 transitions. [2018-11-07 06:27:06,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1063 [2018-11-07 06:27:06,652 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:06,653 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:27:06,653 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:06,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:06,654 INFO L82 PathProgramCache]: Analyzing trace with hash 971077315, now seen corresponding path program 1 times [2018-11-07 06:27:06,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:06,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:06,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:06,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:06,655 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3496 backedges. 926 proven. 546 refuted. 0 times theorem prover too weak. 2024 trivial. 0 not checked. [2018-11-07 06:27:08,498 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:08,498 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:27:08,498 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1063 with the following transitions: [2018-11-07 06:27:08,498 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [550], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:27:08,501 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:27:08,501 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:27:13,973 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:27:13,973 INFO L272 AbstractInterpreter]: Visited 196 different actions 791 times. Merged at 13 different actions 43 times. Widened at 1 different actions 1 times. Found 16 fixpoints after 6 different actions. Largest state had 24 variables. [2018-11-07 06:27:13,983 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:13,983 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:27:13,983 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:13,983 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 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:27:13,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:13,992 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:27:14,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:14,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:27:15,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3496 backedges. 772 proven. 2 refuted. 0 times theorem prover too weak. 2722 trivial. 0 not checked. [2018-11-07 06:27:15,264 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:27:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3496 backedges. 772 proven. 2 refuted. 0 times theorem prover too weak. 2722 trivial. 0 not checked. [2018-11-07 06:27:16,200 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:27:16,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 20 [2018-11-07 06:27:16,201 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:27:16,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 06:27:16,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 06:27:16,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2018-11-07 06:27:16,205 INFO L87 Difference]: Start difference. First operand 5403 states and 5618 transitions. Second operand 18 states. [2018-11-07 06:27:19,549 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 23 [2018-11-07 06:27:22,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:22,537 INFO L93 Difference]: Finished difference Result 8378 states and 8847 transitions. [2018-11-07 06:27:22,537 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-07 06:27:22,537 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 1062 [2018-11-07 06:27:22,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:22,547 INFO L225 Difference]: With dead ends: 8378 [2018-11-07 06:27:22,547 INFO L226 Difference]: Without dead ends: 4835 [2018-11-07 06:27:22,555 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2195 GetRequests, 2148 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 546 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=486, Invalid=1866, Unknown=0, NotChecked=0, Total=2352 [2018-11-07 06:27:22,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4835 states. [2018-11-07 06:27:22,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4835 to 4566. [2018-11-07 06:27:22,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4566 states. [2018-11-07 06:27:22,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4566 states to 4566 states and 4733 transitions. [2018-11-07 06:27:22,636 INFO L78 Accepts]: Start accepts. Automaton has 4566 states and 4733 transitions. Word has length 1062 [2018-11-07 06:27:22,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:22,637 INFO L480 AbstractCegarLoop]: Abstraction has 4566 states and 4733 transitions. [2018-11-07 06:27:22,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 06:27:22,637 INFO L276 IsEmpty]: Start isEmpty. Operand 4566 states and 4733 transitions. [2018-11-07 06:27:22,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1077 [2018-11-07 06:27:22,654 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:22,655 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:27:22,655 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:22,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:22,656 INFO L82 PathProgramCache]: Analyzing trace with hash 2013654015, now seen corresponding path program 1 times [2018-11-07 06:27:22,656 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:22,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:22,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:22,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:22,657 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:22,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:23,553 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 06:27:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3548 backedges. 789 proven. 701 refuted. 0 times theorem prover too weak. 2058 trivial. 0 not checked. [2018-11-07 06:27:25,054 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:25,054 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:27:25,054 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 1077 with the following transitions: [2018-11-07 06:27:25,054 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [37], [39], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [522], [523], [527], [531], [535], [539], [542], [543], [547], [550], [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], [686], [687], [690], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [926], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:27:25,057 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:27:25,057 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:27:30,325 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:27:30,326 INFO L272 AbstractInterpreter]: Visited 196 different actions 793 times. Merged at 13 different actions 45 times. Widened at 1 different actions 1 times. Found 16 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-07 06:27:30,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:30,331 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:27:30,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:30,331 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 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:27:30,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:30,340 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:27:30,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:30,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:27:31,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3548 backedges. 772 proven. 2 refuted. 0 times theorem prover too weak. 2774 trivial. 0 not checked. [2018-11-07 06:27:31,363 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:27:32,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3548 backedges. 772 proven. 2 refuted. 0 times theorem prover too weak. 2774 trivial. 0 not checked. [2018-11-07 06:27:32,639 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:27:32,640 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 06:27:32,640 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:27:32,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:27:32,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:27:32,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:27:32,642 INFO L87 Difference]: Start difference. First operand 4566 states and 4733 transitions. Second operand 17 states. Received shutdown request... [2018-11-07 06:27:33,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 06:27:33,040 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 06:27:33,047 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 06:27:33,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:27:33 BoogieIcfgContainer [2018-11-07 06:27:33,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 06:27:33,048 INFO L168 Benchmark]: Toolchain (without parser) took 223285.72 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -102.9 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-11-07 06:27:33,049 INFO L168 Benchmark]: CDTParser took 0.21 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 06:27:33,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 804.54 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 06:27:33,050 INFO L168 Benchmark]: Boogie Procedure Inliner took 155.88 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 710.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -810.0 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2018-11-07 06:27:33,051 INFO L168 Benchmark]: Boogie Preprocessor took 103.37 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 06:27:33,052 INFO L168 Benchmark]: RCFGBuilder took 3847.52 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 131.1 MB). Peak memory consumption was 131.1 MB. Max. memory is 7.1 GB. [2018-11-07 06:27:33,052 INFO L168 Benchmark]: TraceAbstraction took 218368.86 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 523.1 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 06:27:33,057 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 804.54 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 155.88 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 710.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -810.0 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.37 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3847.52 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 131.1 MB). Peak memory consumption was 131.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218368.86 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 523.1 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 34]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 34). Cancelled while BasicCegarLoop was constructing difference of abstraction (4566states) and FLOYD_HOARE automaton (currently 5 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (85 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 218.2s OverallTime, 16 OverallIterations, 10 TraceHistogramMax, 133.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1920 SDtfs, 38216 SDslu, 3220 SDs, 0 SdLazy, 39938 SolverSat, 5950 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 96.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 13686 GetRequests, 13293 SyntacticMatches, 14 SemanticMatches, 379 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4805 ImplicationChecksByTransitivity, 21.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11587occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 46.5s AbstIntTime, 10 AbstIntIterations, 1 AbstIntStrong, 0.9960518564866392 AbsIntWeakeningRatio, 0.14054054054054055 AbsIntAvgWeakeningVarsNumRemoved, 15.848648648648648 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 15 MinimizatonAttempts, 2598 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.4s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 23.7s InterpolantComputationTime, 15158 NumberOfCodeBlocks, 15158 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 21598 ConstructedInterpolants, 0 QuantifiedInterpolants, 58819137 SizeOfPredicates, 25 NumberOfNonLiveVariables, 9442 ConjunctsInSsa, 75 ConjunctsInUnsatCore, 34 InterpolantComputations, 8 PerfectInterpolantSequences, 46280/50257 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown