java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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/Problem15_label09_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:39:34,882 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:39:34,886 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:39:34,900 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:39:34,901 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:39:34,902 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:39:34,903 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:39:34,905 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:39:34,906 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:39:34,907 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:39:34,908 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:39:34,908 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:39:34,909 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:39:34,910 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:39:34,911 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:39:34,912 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:39:34,913 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:39:34,915 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:39:34,917 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:39:34,919 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:39:34,920 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:39:34,921 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:39:34,924 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 23:39:34,932 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 23:39:34,948 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:39:34,948 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:39:34,949 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:39:34,949 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:39:34,949 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:39:34,949 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:39:34,950 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:39:34,950 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:39:34,950 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:39:34,950 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:39:34,950 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:39:34,950 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:39:34,951 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:39:34,951 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:39:34,952 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:39:34,952 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:39:34,952 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:39:34,952 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:39:34,952 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:39:34,952 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:39:34,953 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:39:34,953 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:39:34,953 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:39:34,953 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:39:34,953 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:39:34,954 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:39:34,954 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:39:34,954 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:39:34,954 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:39:34,954 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:39:34,955 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:39:34,955 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:39:34,955 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:39:34,955 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:39:34,955 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:39:34,955 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:39:34,998 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:39:35,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:39:35,016 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:39:35,017 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:39:35,018 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:39:35,019 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label09_false-unreach-call.c [2018-10-24 23:39:35,079 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b1cadbb5f/141b1b45474a4c749dcd00f2f882e259/FLAG460a2f76d [2018-10-24 23:39:35,857 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:39:35,858 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label09_false-unreach-call.c [2018-10-24 23:39:35,881 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b1cadbb5f/141b1b45474a4c749dcd00f2f882e259/FLAG460a2f76d [2018-10-24 23:39:35,897 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b1cadbb5f/141b1b45474a4c749dcd00f2f882e259 [2018-10-24 23:39:35,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:39:35,910 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:39:35,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:39:35,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:39:35,918 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:39:35,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:39:35" (1/1) ... [2018-10-24 23:39:35,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@128929bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:35, skipping insertion in model container [2018-10-24 23:39:35,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:39:35" (1/1) ... [2018-10-24 23:39:35,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:39:36,022 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:39:36,806 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:39:36,811 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:39:37,133 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:39:37,156 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:39:37,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:37 WrapperNode [2018-10-24 23:39:37,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:39:37,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:39:37,158 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:39:37,159 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:39:37,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:37" (1/1) ... [2018-10-24 23:39:37,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:37" (1/1) ... [2018-10-24 23:39:37,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:39:37,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:39:37,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:39:37,603 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:39:37,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:37" (1/1) ... [2018-10-24 23:39:37,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:37" (1/1) ... [2018-10-24 23:39:37,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:37" (1/1) ... [2018-10-24 23:39:37,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:37" (1/1) ... [2018-10-24 23:39:37,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:37" (1/1) ... [2018-10-24 23:39:37,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:37" (1/1) ... [2018-10-24 23:39:37,822 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:37" (1/1) ... [2018-10-24 23:39:37,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:39:37,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:39:37,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:39:37,875 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:39:37,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:39:37,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:39:37,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:39:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 23:39:37,934 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 23:39:37,934 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:39:37,934 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:39:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:39:37,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:39:37,937 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:39:37,937 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:39:44,599 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:39:44,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:39:44 BoogieIcfgContainer [2018-10-24 23:39:44,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:39:44,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:39:44,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:39:44,605 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:39:44,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:39:35" (1/3) ... [2018-10-24 23:39:44,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9b5f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:39:44, skipping insertion in model container [2018-10-24 23:39:44,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:39:37" (2/3) ... [2018-10-24 23:39:44,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9b5f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:39:44, skipping insertion in model container [2018-10-24 23:39:44,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:39:44" (3/3) ... [2018-10-24 23:39:44,609 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label09_false-unreach-call.c [2018-10-24 23:39:44,620 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:39:44,630 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:39:44,648 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:39:44,690 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:39:44,691 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:39:44,691 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:39:44,691 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:39:44,691 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:39:44,691 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:39:44,692 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:39:44,692 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:39:44,731 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 23:39:44,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-24 23:39:44,740 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:39:44,742 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:39:44,745 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:39:44,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:39:44,752 INFO L82 PathProgramCache]: Analyzing trace with hash -363304508, now seen corresponding path program 1 times [2018-10-24 23:39:44,755 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:39:44,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:39:44,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:39:44,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:39:44,806 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:39:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:39:45,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:39:45,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:39:45,166 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:39:45,166 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:39:45,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:39:45,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:39:45,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:39:45,193 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-24 23:39:53,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:39:53,892 INFO L93 Difference]: Finished difference Result 1514 states and 2777 transitions. [2018-10-24 23:39:53,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:39:53,893 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-10-24 23:39:53,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:39:53,923 INFO L225 Difference]: With dead ends: 1514 [2018-10-24 23:39:53,923 INFO L226 Difference]: Without dead ends: 1070 [2018-10-24 23:39:53,932 INFO L605 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 [2018-10-24 23:39:53,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2018-10-24 23:39:54,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2018-10-24 23:39:54,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-24 23:39:54,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1675 transitions. [2018-10-24 23:39:54,056 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1675 transitions. Word has length 14 [2018-10-24 23:39:54,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:39:54,057 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1675 transitions. [2018-10-24 23:39:54,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:39:54,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1675 transitions. [2018-10-24 23:39:54,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-10-24 23:39:54,061 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:39:54,061 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:39:54,062 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:39:54,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:39:54,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1330789809, now seen corresponding path program 1 times [2018-10-24 23:39:54,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:39:54,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:39:54,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:39:54,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:39:54,064 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:39:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:39:54,344 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:39:54,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:39:54,346 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:39:54,346 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:39:54,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:39:54,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:39:54,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:39:54,349 INFO L87 Difference]: Start difference. First operand 1068 states and 1675 transitions. Second operand 3 states. [2018-10-24 23:39:58,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:39:58,406 INFO L93 Difference]: Finished difference Result 3059 states and 4890 transitions. [2018-10-24 23:39:58,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:39:58,412 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2018-10-24 23:39:58,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:39:58,426 INFO L225 Difference]: With dead ends: 3059 [2018-10-24 23:39:58,427 INFO L226 Difference]: Without dead ends: 1997 [2018-10-24 23:39:58,434 INFO L605 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 [2018-10-24 23:39:58,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-10-24 23:39:58,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1995. [2018-10-24 23:39:58,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2018-10-24 23:39:58,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2748 transitions. [2018-10-24 23:39:58,493 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2748 transitions. Word has length 84 [2018-10-24 23:39:58,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:39:58,493 INFO L481 AbstractCegarLoop]: Abstraction has 1995 states and 2748 transitions. [2018-10-24 23:39:58,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:39:58,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2748 transitions. [2018-10-24 23:39:58,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-24 23:39:58,502 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:39:58,502 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:39:58,503 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:39:58,503 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:39:58,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1184390517, now seen corresponding path program 1 times [2018-10-24 23:39:58,503 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:39:58,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:39:58,505 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:39:58,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:39:58,505 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:39:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:39:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 23:39:58,889 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:39:58,890 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:39:58,890 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 195 with the following transitions: [2018-10-24 23:39:58,892 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [85], [87], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 23:39:58,939 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:39:58,939 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:40:00,181 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 23:40:00,183 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 23:40:00,227 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:40:00,227 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 23:40:01,272 INFO L232 lantSequenceWeakener]: Weakened 191 states. On average, predicates are now at 77.83% of their original sizes. [2018-10-24 23:40:01,273 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 23:40:01,895 INFO L413 sIntCurrentIteration]: We have 193 unified AI predicates [2018-10-24 23:40:01,895 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 23:40:01,896 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:40:01,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-24 23:40:01,896 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:40:01,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 23:40:01,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 23:40:01,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:40:01,898 INFO L87 Difference]: Start difference. First operand 1995 states and 2748 transitions. Second operand 9 states. [2018-10-24 23:40:58,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:40:58,466 INFO L93 Difference]: Finished difference Result 4926 states and 6576 transitions. [2018-10-24 23:40:58,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 23:40:58,466 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 194 [2018-10-24 23:40:58,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:40:58,483 INFO L225 Difference]: With dead ends: 4926 [2018-10-24 23:40:58,483 INFO L226 Difference]: Without dead ends: 2937 [2018-10-24 23:40:58,491 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 199 GetRequests, 184 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2018-10-24 23:40:58,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-10-24 23:40:58,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2934. [2018-10-24 23:40:58,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2018-10-24 23:40:58,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 3745 transitions. [2018-10-24 23:40:58,562 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 3745 transitions. Word has length 194 [2018-10-24 23:40:58,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:40:58,563 INFO L481 AbstractCegarLoop]: Abstraction has 2934 states and 3745 transitions. [2018-10-24 23:40:58,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 23:40:58,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 3745 transitions. [2018-10-24 23:40:58,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-10-24 23:40:58,575 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:40:58,576 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:40:58,576 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:40:58,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:40:58,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1247364580, now seen corresponding path program 1 times [2018-10-24 23:40:58,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:40:58,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:40:58,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:40:58,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:40:58,581 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:40:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:40:58,937 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-24 23:40:58,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:40:58,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:40:58,937 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:40:58,938 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:40:58,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:40:58,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:40:58,939 INFO L87 Difference]: Start difference. First operand 2934 states and 3745 transitions. Second operand 3 states. [2018-10-24 23:41:03,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:41:03,243 INFO L93 Difference]: Finished difference Result 5853 states and 8065 transitions. [2018-10-24 23:41:03,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:41:03,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 370 [2018-10-24 23:41:03,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:41:03,268 INFO L225 Difference]: With dead ends: 5853 [2018-10-24 23:41:03,268 INFO L226 Difference]: Without dead ends: 3864 [2018-10-24 23:41:03,281 INFO L605 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 [2018-10-24 23:41:03,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3864 states. [2018-10-24 23:41:03,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3864 to 3864. [2018-10-24 23:41:03,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3864 states. [2018-10-24 23:41:03,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3864 states to 3864 states and 4831 transitions. [2018-10-24 23:41:03,370 INFO L78 Accepts]: Start accepts. Automaton has 3864 states and 4831 transitions. Word has length 370 [2018-10-24 23:41:03,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:41:03,371 INFO L481 AbstractCegarLoop]: Abstraction has 3864 states and 4831 transitions. [2018-10-24 23:41:03,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:41:03,371 INFO L276 IsEmpty]: Start isEmpty. Operand 3864 states and 4831 transitions. [2018-10-24 23:41:03,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-10-24 23:41:03,379 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:41:03,379 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:41:03,380 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:41:03,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:03,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1987976110, now seen corresponding path program 1 times [2018-10-24 23:41:03,380 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:41:03,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:03,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:03,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:03,382 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:41:03,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:03,940 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:41:03,941 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:41:03,941 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:41:03,941 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 377 with the following transitions: [2018-10-24 23:41:03,942 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [85], [87], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 23:41:03,954 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:41:03,954 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:41:04,909 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:41:04,910 INFO L272 AbstractInterpreter]: Visited 286 different actions 1133 times. Merged at 7 different actions 26 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-24 23:41:04,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:04,951 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:41:04,951 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:41:04,951 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:41:04,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:04,966 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:41:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:05,147 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:41:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:41:05,476 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:41:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:41:05,887 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:41:05,888 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-24 23:41:05,888 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:41:05,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 23:41:05,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 23:41:05,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-24 23:41:05,890 INFO L87 Difference]: Start difference. First operand 3864 states and 4831 transitions. Second operand 9 states. [2018-10-24 23:41:17,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:41:17,158 INFO L93 Difference]: Finished difference Result 10368 states and 14875 transitions. [2018-10-24 23:41:17,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-24 23:41:17,158 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 376 [2018-10-24 23:41:17,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:41:17,218 INFO L225 Difference]: With dead ends: 10368 [2018-10-24 23:41:17,218 INFO L226 Difference]: Without dead ends: 7449 [2018-10-24 23:41:17,257 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 755 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2018-10-24 23:41:17,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7449 states. [2018-10-24 23:41:17,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7449 to 7437. [2018-10-24 23:41:17,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7437 states. [2018-10-24 23:41:17,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7437 states to 7437 states and 9664 transitions. [2018-10-24 23:41:17,499 INFO L78 Accepts]: Start accepts. Automaton has 7437 states and 9664 transitions. Word has length 376 [2018-10-24 23:41:17,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:41:17,500 INFO L481 AbstractCegarLoop]: Abstraction has 7437 states and 9664 transitions. [2018-10-24 23:41:17,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 23:41:17,501 INFO L276 IsEmpty]: Start isEmpty. Operand 7437 states and 9664 transitions. [2018-10-24 23:41:17,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2018-10-24 23:41:17,763 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:41:17,765 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:41:17,765 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:41:17,766 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:17,766 INFO L82 PathProgramCache]: Analyzing trace with hash -509099400, now seen corresponding path program 1 times [2018-10-24 23:41:17,766 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:41:17,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:17,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:17,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:17,768 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:41:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:18,319 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 23:41:18,319 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:41:18,319 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:41:18,320 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 395 with the following transitions: [2018-10-24 23:41:18,320 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [85], [87], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [625], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 23:41:18,326 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:41:18,327 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:41:19,602 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:41:19,602 INFO L272 AbstractInterpreter]: Visited 211 different actions 831 times. Merged at 7 different actions 23 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-24 23:41:19,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:19,609 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:41:19,609 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:41:19,609 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:41:19,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:19,617 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:41:19,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:19,737 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:41:19,896 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 23:41:19,896 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:41:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 23:41:20,263 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:41:20,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-24 23:41:20,264 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:41:20,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 23:41:20,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 23:41:20,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-10-24 23:41:20,266 INFO L87 Difference]: Start difference. First operand 7437 states and 9664 transitions. Second operand 9 states. [2018-10-24 23:41:40,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:41:40,636 INFO L93 Difference]: Finished difference Result 23681 states and 35821 transitions. [2018-10-24 23:41:40,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2018-10-24 23:41:40,637 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 394 [2018-10-24 23:41:40,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:41:40,781 INFO L225 Difference]: With dead ends: 23681 [2018-10-24 23:41:40,782 INFO L226 Difference]: Without dead ends: 16558 [2018-10-24 23:41:40,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 877 GetRequests, 823 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=557, Invalid=2305, Unknown=0, NotChecked=0, Total=2862 [2018-10-24 23:41:40,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16558 states. [2018-10-24 23:41:41,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16558 to 14312. [2018-10-24 23:41:41,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14312 states. [2018-10-24 23:41:41,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14312 states to 14312 states and 17929 transitions. [2018-10-24 23:41:41,467 INFO L78 Accepts]: Start accepts. Automaton has 14312 states and 17929 transitions. Word has length 394 [2018-10-24 23:41:41,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:41:41,469 INFO L481 AbstractCegarLoop]: Abstraction has 14312 states and 17929 transitions. [2018-10-24 23:41:41,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 23:41:41,469 INFO L276 IsEmpty]: Start isEmpty. Operand 14312 states and 17929 transitions. [2018-10-24 23:41:41,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2018-10-24 23:41:41,479 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:41:41,480 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:41:41,480 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:41:41,480 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:41,481 INFO L82 PathProgramCache]: Analyzing trace with hash -453468430, now seen corresponding path program 1 times [2018-10-24 23:41:41,481 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:41:41,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:41,482 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:41,482 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:41,482 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:41:41,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 23:41:42,164 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:41:42,164 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:41:42,165 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 399 with the following transitions: [2018-10-24 23:41:42,165 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [85], [87], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [633], [638], [640], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 23:41:42,173 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:41:42,173 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:41:43,630 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:41:43,630 INFO L272 AbstractInterpreter]: Visited 213 different actions 1051 times. Merged at 8 different actions 39 times. Widened at 1 different actions 3 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-24 23:41:43,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:43,642 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:41:43,642 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:41:43,642 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:41:43,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:43,652 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:41:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:43,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:41:43,962 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 23:41:43,962 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:41:44,171 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 192 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-10-24 23:41:44,192 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:41:44,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-10-24 23:41:44,192 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:41:44,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 23:41:44,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 23:41:44,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 23:41:44,194 INFO L87 Difference]: Start difference. First operand 14312 states and 17929 transitions. Second operand 9 states. [2018-10-24 23:41:55,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:41:55,984 INFO L93 Difference]: Finished difference Result 28777 states and 39855 transitions. [2018-10-24 23:41:55,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 23:41:55,985 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 398 [2018-10-24 23:41:55,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:41:56,082 INFO L225 Difference]: With dead ends: 28777 [2018-10-24 23:41:56,083 INFO L226 Difference]: Without dead ends: 16799 [2018-10-24 23:41:56,165 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 823 GetRequests, 802 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2018-10-24 23:41:56,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16799 states. [2018-10-24 23:41:56,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16799 to 16423. [2018-10-24 23:41:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16423 states. [2018-10-24 23:41:56,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16423 states to 16423 states and 21537 transitions. [2018-10-24 23:41:56,672 INFO L78 Accepts]: Start accepts. Automaton has 16423 states and 21537 transitions. Word has length 398 [2018-10-24 23:41:56,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:41:56,673 INFO L481 AbstractCegarLoop]: Abstraction has 16423 states and 21537 transitions. [2018-10-24 23:41:56,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 23:41:56,674 INFO L276 IsEmpty]: Start isEmpty. Operand 16423 states and 21537 transitions. [2018-10-24 23:41:56,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2018-10-24 23:41:56,692 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:41:56,693 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:41:56,693 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:41:56,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:56,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1094622373, now seen corresponding path program 1 times [2018-10-24 23:41:56,694 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:41:56,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:56,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:56,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:41:56,695 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:41:56,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:57,413 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-10-24 23:41:57,414 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:41:57,414 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:41:57,414 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 444 with the following transitions: [2018-10-24 23:41:57,416 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [85], [87], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 23:41:57,422 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:41:57,422 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:41:59,064 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:41:59,064 INFO L272 AbstractInterpreter]: Visited 285 different actions 850 times. Merged at 7 different actions 19 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-24 23:41:59,068 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:41:59,068 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:41:59,068 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:41:59,068 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:41:59,077 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:41:59,077 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:41:59,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:41:59,211 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:41:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-10-24 23:41:59,505 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:42:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2018-10-24 23:42:00,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-24 23:42:00,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-10-24 23:42:00,098 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:42:00,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 23:42:00,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 23:42:00,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 23:42:00,100 INFO L87 Difference]: Start difference. First operand 16423 states and 21537 transitions. Second operand 5 states. [2018-10-24 23:42:04,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:42:04,414 INFO L93 Difference]: Finished difference Result 34399 states and 49134 transitions. [2018-10-24 23:42:04,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 23:42:04,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 443 [2018-10-24 23:42:04,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:42:04,559 INFO L225 Difference]: With dead ends: 34399 [2018-10-24 23:42:04,560 INFO L226 Difference]: Without dead ends: 19974 [2018-10-24 23:42:04,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 896 GetRequests, 885 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 23:42:04,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19974 states. [2018-10-24 23:42:05,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19974 to 19223. [2018-10-24 23:42:05,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19223 states. [2018-10-24 23:42:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19223 states to 19223 states and 24250 transitions. [2018-10-24 23:42:05,326 INFO L78 Accepts]: Start accepts. Automaton has 19223 states and 24250 transitions. Word has length 443 [2018-10-24 23:42:05,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:42:05,327 INFO L481 AbstractCegarLoop]: Abstraction has 19223 states and 24250 transitions. [2018-10-24 23:42:05,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 23:42:05,327 INFO L276 IsEmpty]: Start isEmpty. Operand 19223 states and 24250 transitions. [2018-10-24 23:42:05,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2018-10-24 23:42:05,347 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:42:05,348 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:42:05,348 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:42:05,348 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:42:05,349 INFO L82 PathProgramCache]: Analyzing trace with hash -270282091, now seen corresponding path program 1 times [2018-10-24 23:42:05,349 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:42:05,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:42:05,350 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:42:05,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:42:05,350 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:42:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:42:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 245 proven. 96 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-10-24 23:42:06,466 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:42:06,466 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:42:06,466 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 523 with the following transitions: [2018-10-24 23:42:06,466 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [85], [87], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 23:42:06,471 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:42:06,471 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:42:08,150 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:42:08,151 INFO L272 AbstractInterpreter]: Visited 214 different actions 1275 times. Merged at 9 different actions 55 times. Widened at 1 different actions 2 times. Found 11 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-24 23:42:08,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:42:08,156 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:42:08,156 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:42:08,156 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:42:08,164 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:42:08,164 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:42:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:42:08,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:42:08,685 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2018-10-24 23:42:08,685 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:42:09,365 INFO L134 CoverageAnalysis]: Checked inductivity of 597 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Forcibly destroying the process [2018-10-24 23:42:09,647 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-10-24 23:42:09,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [10] total 12 [2018-10-24 23:42:09,648 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:42:09,648 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:42:09,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:42:09,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-10-24 23:42:09,649 INFO L87 Difference]: Start difference. First operand 19223 states and 24250 transitions. Second operand 3 states. [2018-10-24 23:42:12,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:42:12,760 INFO L93 Difference]: Finished difference Result 32926 states and 40628 transitions. [2018-10-24 23:42:12,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:42:12,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 522 [2018-10-24 23:42:12,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:42:12,815 INFO L225 Difference]: With dead ends: 32926 [2018-10-24 23:42:12,815 INFO L226 Difference]: Without dead ends: 16037 [2018-10-24 23:42:12,901 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1055 GetRequests, 1045 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-10-24 23:42:12,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16037 states. [2018-10-24 23:42:13,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16037 to 15922. [2018-10-24 23:42:13,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15922 states. [2018-10-24 23:42:13,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15922 states to 15922 states and 17513 transitions. [2018-10-24 23:42:13,182 INFO L78 Accepts]: Start accepts. Automaton has 15922 states and 17513 transitions. Word has length 522 [2018-10-24 23:42:13,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:42:13,183 INFO L481 AbstractCegarLoop]: Abstraction has 15922 states and 17513 transitions. [2018-10-24 23:42:13,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:42:13,183 INFO L276 IsEmpty]: Start isEmpty. Operand 15922 states and 17513 transitions. [2018-10-24 23:42:13,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 563 [2018-10-24 23:42:13,210 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:42:13,210 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:42:13,211 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:42:13,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:42:13,211 INFO L82 PathProgramCache]: Analyzing trace with hash -1034346510, now seen corresponding path program 1 times [2018-10-24 23:42:13,211 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:42:13,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:42:13,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:42:13,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:42:13,213 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:42:13,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:42:13,713 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-10-24 23:42:13,714 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:42:13,714 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 23:42:13,714 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:42:13,715 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 23:42:13,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 23:42:13,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:42:13,716 INFO L87 Difference]: Start difference. First operand 15922 states and 17513 transitions. Second operand 3 states. [2018-10-24 23:42:18,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:42:18,153 INFO L93 Difference]: Finished difference Result 31059 states and 34644 transitions. [2018-10-24 23:42:18,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 23:42:18,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 562 [2018-10-24 23:42:18,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:42:18,202 INFO L225 Difference]: With dead ends: 31059 [2018-10-24 23:42:18,202 INFO L226 Difference]: Without dead ends: 17471 [2018-10-24 23:42:18,231 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 23:42:18,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17471 states. [2018-10-24 23:42:18,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17471 to 17446. [2018-10-24 23:42:18,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17446 states. [2018-10-24 23:42:18,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17446 states to 17446 states and 19217 transitions. [2018-10-24 23:42:18,505 INFO L78 Accepts]: Start accepts. Automaton has 17446 states and 19217 transitions. Word has length 562 [2018-10-24 23:42:18,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:42:18,507 INFO L481 AbstractCegarLoop]: Abstraction has 17446 states and 19217 transitions. [2018-10-24 23:42:18,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 23:42:18,507 INFO L276 IsEmpty]: Start isEmpty. Operand 17446 states and 19217 transitions. [2018-10-24 23:42:18,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 592 [2018-10-24 23:42:18,533 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:42:18,533 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 23:42:18,534 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:42:18,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:42:18,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1881331486, now seen corresponding path program 1 times [2018-10-24 23:42:18,534 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:42:18,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:42:18,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:42:18,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:42:18,535 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:42:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:42:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 29 proven. 401 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 23:42:20,388 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:42:20,388 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:42:20,388 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 592 with the following transitions: [2018-10-24 23:42:20,389 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [85], [87], [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], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1151], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 23:42:20,394 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:42:20,394 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:42:34,708 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:42:34,708 INFO L272 AbstractInterpreter]: Visited 285 different actions 855 times. Merged at 8 different actions 24 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-24 23:42:34,715 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:42:34,715 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:42:34,715 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:42:34,715 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 23:42:34,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:42:34,724 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:42:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:42:34,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:42:38,307 WARN L179 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 388 DAG size of output: 18 [2018-10-24 23:42:38,659 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-24 23:42:38,660 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:42:39,374 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 324 proven. 2 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2018-10-24 23:42:39,395 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:42:39,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 16 [2018-10-24 23:42:39,396 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:42:39,397 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 23:42:39,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 23:42:39,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2018-10-24 23:42:39,398 INFO L87 Difference]: Start difference. First operand 17446 states and 19217 transitions. Second operand 14 states. [2018-10-24 23:42:48,418 WARN L179 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2018-10-24 23:43:24,430 WARN L179 SmtUtils]: Spent 2.05 s on a formula simplification. DAG size of input: 53 DAG size of output: 39 Received shutdown request... [2018-10-24 23:43:27,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2018-10-24 23:43:27,981 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 23:43:27,985 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 23:43:27,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:43:27 BoogieIcfgContainer [2018-10-24 23:43:27,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 23:43:27,986 INFO L168 Benchmark]: Toolchain (without parser) took 232077.26 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 82.0 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 23:43:27,987 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 23:43:27,988 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1246.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-10-24 23:43:27,989 INFO L168 Benchmark]: Boogie Procedure Inliner took 444.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -860.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-24 23:43:27,990 INFO L168 Benchmark]: Boogie Preprocessor took 271.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2018-10-24 23:43:27,991 INFO L168 Benchmark]: RCFGBuilder took 6725.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 315.9 MB). Peak memory consumption was 315.9 MB. Max. memory is 7.1 GB. [2018-10-24 23:43:27,991 INFO L168 Benchmark]: TraceAbstraction took 223384.46 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 1.3 GB in the end (delta: 506.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 23:43:27,996 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1246.01 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 444.03 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -860.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 271.64 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6725.78 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 315.9 MB). Peak memory consumption was 315.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223384.46 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.8 GB). Free memory was 1.8 GB in the beginning and 1.3 GB in the end (delta: 506.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 28]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 28). Cancelled while BasicCegarLoop was constructing difference of abstraction (17446states) and FLOYD_HOARE automaton (currently 50 states, 14 states before enhancement),while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 59 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 223.3s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 178.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4233 SDtfs, 22641 SDslu, 3122 SDs, 0 SdLazy, 38556 SolverSat, 6743 SolverUnsat, 12 SolverUnknown, 0 SolverNotchecked, 142.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 5925 GetRequests, 5725 SyntacticMatches, 13 SemanticMatches, 186 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2145 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19223occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 22.7s AbstIntTime, 7 AbstIntIterations, 1 AbstIntStrong, 0.99599233599779 AbsIntWeakeningRatio, 0.13471502590673576 AbsIntAvgWeakeningVarsNumRemoved, 0.9689119170984456 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 10 MinimizatonAttempts, 3532 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 6672 NumberOfCodeBlocks, 6672 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 9373 ConstructedInterpolants, 7 QuantifiedInterpolants, 15330612 SizeOfPredicates, 6 NumberOfNonLiveVariables, 4040 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 23 InterpolantComputations, 7 PerfectInterpolantSequences, 6119/6723 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown