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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label15_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:08:14,888 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:08:14,890 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:08:14,907 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:08:14,907 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:08:14,908 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:08:14,910 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:08:14,913 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:08:14,915 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:08:14,917 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:08:14,918 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:08:14,921 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:08:14,922 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:08:14,923 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:08:14,927 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:08:14,928 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:08:14,930 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:08:14,938 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:08:14,943 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:08:14,948 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:08:14,949 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:08:14,954 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:08:14,956 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 00:08:14,971 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 00:08:15,000 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:08:15,000 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:08:15,001 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:08:15,001 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:08:15,001 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:08:15,002 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:08:15,002 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:08:15,002 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:08:15,002 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:08:15,002 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:08:15,002 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:08:15,003 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:08:15,003 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:08:15,004 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:08:15,004 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:08:15,004 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:08:15,004 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:08:15,004 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:08:15,004 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:08:15,005 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:08:15,005 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:08:15,005 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:08:15,005 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:08:15,005 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:08:15,006 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:08:15,006 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:08:15,006 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:08:15,006 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:08:15,006 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:08:15,007 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:08:15,007 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:08:15,007 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:08:15,007 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:08:15,007 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:08:15,063 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:08:15,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:08:15,084 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:08:15,086 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:08:15,087 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:08:15,087 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label15_false-unreach-call.c [2018-10-27 00:08:15,160 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eb04538dd/eb4101121a0f40f88961c0968921e808/FLAGc2eb7ac3d [2018-10-27 00:08:15,860 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:08:15,860 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label15_false-unreach-call.c [2018-10-27 00:08:15,882 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eb04538dd/eb4101121a0f40f88961c0968921e808/FLAGc2eb7ac3d [2018-10-27 00:08:15,900 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/eb04538dd/eb4101121a0f40f88961c0968921e808 [2018-10-27 00:08:15,912 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:08:15,913 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:08:15,914 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:08:15,914 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:08:15,918 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:08:15,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:08:15" (1/1) ... [2018-10-27 00:08:15,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bd54a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:15, skipping insertion in model container [2018-10-27 00:08:15,923 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:08:15" (1/1) ... [2018-10-27 00:08:15,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:08:16,023 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:08:16,658 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:08:16,662 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:08:16,909 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:08:16,933 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:08:16,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:16 WrapperNode [2018-10-27 00:08:16,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:08:16,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:08:16,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:08:16,935 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:08:16,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:16" (1/1) ... [2018-10-27 00:08:16,997 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:16" (1/1) ... [2018-10-27 00:08:17,295 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:08:17,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:08:17,296 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:08:17,296 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:08:17,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:16" (1/1) ... [2018-10-27 00:08:17,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:16" (1/1) ... [2018-10-27 00:08:17,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:16" (1/1) ... [2018-10-27 00:08:17,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:16" (1/1) ... [2018-10-27 00:08:17,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:16" (1/1) ... [2018-10-27 00:08:17,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:16" (1/1) ... [2018-10-27 00:08:17,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:16" (1/1) ... [2018-10-27 00:08:17,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:08:17,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:08:17,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:08:17,484 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:08:17,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:16" (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 [2018-10-27 00:08:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:08:17,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:08:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 00:08:17,564 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 00:08:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:08:17,565 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:08:17,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:08:17,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:08:17,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:08:17,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:08:22,929 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:08:22,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:08:22 BoogieIcfgContainer [2018-10-27 00:08:22,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:08:22,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:08:22,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:08:22,937 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:08:22,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:08:15" (1/3) ... [2018-10-27 00:08:22,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2237d213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:08:22, skipping insertion in model container [2018-10-27 00:08:22,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:08:16" (2/3) ... [2018-10-27 00:08:22,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2237d213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:08:22, skipping insertion in model container [2018-10-27 00:08:22,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:08:22" (3/3) ... [2018-10-27 00:08:22,941 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label15_false-unreach-call.c [2018-10-27 00:08:22,951 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:08:22,960 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:08:22,978 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:08:23,021 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:08:23,021 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:08:23,021 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:08:23,021 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:08:23,021 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:08:23,022 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:08:23,022 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:08:23,022 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:08:23,055 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 00:08:23,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-27 00:08:23,062 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:08:23,063 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:08:23,066 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:08:23,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:08:23,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1965718299, now seen corresponding path program 1 times [2018-10-27 00:08:23,074 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:08:23,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:23,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:08:23,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:23,128 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:08:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:08:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:08:23,547 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:08:23,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:08:23,548 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:08:23,555 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:08:23,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:08:23,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:08:23,576 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-10-27 00:08:29,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:08:29,621 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-10-27 00:08:29,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:08:29,625 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-10-27 00:08:29,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:08:29,654 INFO L225 Difference]: With dead ends: 1513 [2018-10-27 00:08:29,655 INFO L226 Difference]: Without dead ends: 1097 [2018-10-27 00:08:29,665 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 [2018-10-27 00:08:29,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-10-27 00:08:29,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 744. [2018-10-27 00:08:29,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 00:08:29,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1357 transitions. [2018-10-27 00:08:29,787 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1357 transitions. Word has length 29 [2018-10-27 00:08:29,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:08:29,788 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1357 transitions. [2018-10-27 00:08:29,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:08:29,788 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1357 transitions. [2018-10-27 00:08:29,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-27 00:08:29,800 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:08:29,800 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:08:29,801 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:08:29,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:08:29,802 INFO L82 PathProgramCache]: Analyzing trace with hash -2135341492, now seen corresponding path program 1 times [2018-10-27 00:08:29,802 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:08:29,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:29,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:08:29,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:29,805 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:08:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:08:30,279 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:08:30,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:08:30,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 00:08:30,280 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:08:30,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 00:08:30,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 00:08:30,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:08:30,282 INFO L87 Difference]: Start difference. First operand 744 states and 1357 transitions. Second operand 5 states. [2018-10-27 00:08:37,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:08:37,029 INFO L93 Difference]: Finished difference Result 2196 states and 4092 transitions. [2018-10-27 00:08:37,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:08:37,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2018-10-27 00:08:37,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:08:37,046 INFO L225 Difference]: With dead ends: 2196 [2018-10-27 00:08:37,046 INFO L226 Difference]: Without dead ends: 1458 [2018-10-27 00:08:37,053 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 00:08:37,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2018-10-27 00:08:37,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1438. [2018-10-27 00:08:37,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2018-10-27 00:08:37,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2551 transitions. [2018-10-27 00:08:37,128 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2551 transitions. Word has length 99 [2018-10-27 00:08:37,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:08:37,129 INFO L481 AbstractCegarLoop]: Abstraction has 1438 states and 2551 transitions. [2018-10-27 00:08:37,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 00:08:37,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2551 transitions. [2018-10-27 00:08:37,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-27 00:08:37,133 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:08:37,134 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:08:37,134 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:08:37,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:08:37,134 INFO L82 PathProgramCache]: Analyzing trace with hash 558578681, now seen corresponding path program 1 times [2018-10-27 00:08:37,135 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:08:37,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:37,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:08:37,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:37,136 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:08:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:08:37,372 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:08:37,373 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:08:37,373 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:08:37,373 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:08:37,374 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:08:37,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:08:37,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:08:37,375 INFO L87 Difference]: Start difference. First operand 1438 states and 2551 transitions. Second operand 6 states. [2018-10-27 00:08:42,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:08:42,840 INFO L93 Difference]: Finished difference Result 4239 states and 7543 transitions. [2018-10-27 00:08:42,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:08:42,843 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-27 00:08:42,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:08:42,867 INFO L225 Difference]: With dead ends: 4239 [2018-10-27 00:08:42,867 INFO L226 Difference]: Without dead ends: 2807 [2018-10-27 00:08:42,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:08:42,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2807 states. [2018-10-27 00:08:42,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2807 to 2785. [2018-10-27 00:08:42,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2785 states. [2018-10-27 00:08:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4352 transitions. [2018-10-27 00:08:42,959 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4352 transitions. Word has length 102 [2018-10-27 00:08:42,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:08:42,960 INFO L481 AbstractCegarLoop]: Abstraction has 2785 states and 4352 transitions. [2018-10-27 00:08:42,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:08:42,960 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4352 transitions. [2018-10-27 00:08:42,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2018-10-27 00:08:42,962 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:08:42,963 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:08:42,963 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:08:42,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:08:42,963 INFO L82 PathProgramCache]: Analyzing trace with hash -2114066796, now seen corresponding path program 1 times [2018-10-27 00:08:42,964 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:08:42,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:42,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:08:42,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:42,965 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:08:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:08:43,254 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:08:43,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:08:43,255 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:08:43,255 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:08:43,255 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:08:43,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:08:43,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:08:43,256 INFO L87 Difference]: Start difference. First operand 2785 states and 4352 transitions. Second operand 6 states. [2018-10-27 00:08:48,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:08:48,039 INFO L93 Difference]: Finished difference Result 6952 states and 11048 transitions. [2018-10-27 00:08:48,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:08:48,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2018-10-27 00:08:48,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:08:48,065 INFO L225 Difference]: With dead ends: 6952 [2018-10-27 00:08:48,066 INFO L226 Difference]: Without dead ends: 4173 [2018-10-27 00:08:48,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:08:48,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4173 states. [2018-10-27 00:08:48,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4173 to 4153. [2018-10-27 00:08:48,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4153 states. [2018-10-27 00:08:48,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 5896 transitions. [2018-10-27 00:08:48,208 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 5896 transitions. Word has length 103 [2018-10-27 00:08:48,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:08:48,209 INFO L481 AbstractCegarLoop]: Abstraction has 4153 states and 5896 transitions. [2018-10-27 00:08:48,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:08:48,209 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 5896 transitions. [2018-10-27 00:08:48,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-27 00:08:48,215 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:08:48,217 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:08:48,218 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:08:48,218 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:08:48,218 INFO L82 PathProgramCache]: Analyzing trace with hash -377282367, now seen corresponding path program 1 times [2018-10-27 00:08:48,218 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:08:48,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:48,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:08:48,220 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:48,220 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:08:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:08:48,491 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:08:48,568 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:08:48,569 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:08:48,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:08:48,569 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:08:48,570 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:08:48,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:08:48,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:08:48,571 INFO L87 Difference]: Start difference. First operand 4153 states and 5896 transitions. Second operand 6 states. [2018-10-27 00:08:53,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:08:53,466 INFO L93 Difference]: Finished difference Result 11374 states and 16767 transitions. [2018-10-27 00:08:53,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:08:53,470 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2018-10-27 00:08:53,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:08:53,509 INFO L225 Difference]: With dead ends: 11374 [2018-10-27 00:08:53,509 INFO L226 Difference]: Without dead ends: 7227 [2018-10-27 00:08:53,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:08:53,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7227 states. [2018-10-27 00:08:53,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7227 to 7152. [2018-10-27 00:08:53,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7152 states. [2018-10-27 00:08:53,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7152 states to 7152 states and 9826 transitions. [2018-10-27 00:08:53,729 INFO L78 Accepts]: Start accepts. Automaton has 7152 states and 9826 transitions. Word has length 106 [2018-10-27 00:08:53,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:08:53,729 INFO L481 AbstractCegarLoop]: Abstraction has 7152 states and 9826 transitions. [2018-10-27 00:08:53,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:08:53,729 INFO L276 IsEmpty]: Start isEmpty. Operand 7152 states and 9826 transitions. [2018-10-27 00:08:53,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-27 00:08:53,731 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:08:53,731 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:08:53,732 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:08:53,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:08:53,732 INFO L82 PathProgramCache]: Analyzing trace with hash -996963759, now seen corresponding path program 1 times [2018-10-27 00:08:53,732 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:08:53,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:53,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:08:53,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:53,734 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:08:53,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:08:53,956 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:08:54,139 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:08:54,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:08:54,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:08:54,139 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:08:54,140 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:08:54,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:08:54,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:08:54,141 INFO L87 Difference]: Start difference. First operand 7152 states and 9826 transitions. Second operand 6 states. [2018-10-27 00:08:57,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:08:57,825 INFO L93 Difference]: Finished difference Result 17771 states and 25546 transitions. [2018-10-27 00:08:57,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:08:57,826 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-10-27 00:08:57,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:08:57,873 INFO L225 Difference]: With dead ends: 17771 [2018-10-27 00:08:57,873 INFO L226 Difference]: Without dead ends: 10625 [2018-10-27 00:08:57,900 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:08:57,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10625 states. [2018-10-27 00:08:58,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10625 to 10585. [2018-10-27 00:08:58,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10585 states. [2018-10-27 00:08:58,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10585 states to 10585 states and 13819 transitions. [2018-10-27 00:08:58,152 INFO L78 Accepts]: Start accepts. Automaton has 10585 states and 13819 transitions. Word has length 114 [2018-10-27 00:08:58,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:08:58,153 INFO L481 AbstractCegarLoop]: Abstraction has 10585 states and 13819 transitions. [2018-10-27 00:08:58,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:08:58,153 INFO L276 IsEmpty]: Start isEmpty. Operand 10585 states and 13819 transitions. [2018-10-27 00:08:58,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-27 00:08:58,155 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:08:58,155 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:08:58,155 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:08:58,156 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:08:58,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1532470232, now seen corresponding path program 1 times [2018-10-27 00:08:58,156 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:08:58,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:58,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:08:58,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:08:58,157 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:08:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:08:58,388 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:08:58,603 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-27 00:08:58,604 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:08:58,604 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:08:58,605 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 122 with the following transitions: [2018-10-27 00:08:58,608 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [311], [313], [316], [324], [332], [340], [348], [356], [364], [372], [380], [388], [396], [404], [412], [420], [428], [436], [444], [452], [460], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 00:08:58,695 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:08:58,696 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:09:00,868 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:09:07,471 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:09:07,473 INFO L272 AbstractInterpreter]: Visited 99 different actions 288 times. Merged at 5 different actions 13 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 00:09:07,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:09:07,484 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:09:09,807 INFO L227 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 90.91% of their original sizes. [2018-10-27 00:09:09,808 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:09:35,230 INFO L415 sIntCurrentIteration]: We unified 120 AI predicates to 120 [2018-10-27 00:09:35,230 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:09:35,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:09:35,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [4] total 16 [2018-10-27 00:09:35,231 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:09:35,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-27 00:09:35,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-27 00:09:35,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-10-27 00:09:35,232 INFO L87 Difference]: Start difference. First operand 10585 states and 13819 transitions. Second operand 14 states. Received shutdown request... [2018-10-27 00:12:17,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-27 00:12:17,945 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:12:17,950 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:12:17,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:12:17 BoogieIcfgContainer [2018-10-27 00:12:17,950 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:12:17,951 INFO L168 Benchmark]: Toolchain (without parser) took 242038.83 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -634.4 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-27 00:12:17,952 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:12:17,953 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1019.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-27 00:12:17,954 INFO L168 Benchmark]: Boogie Procedure Inliner took 361.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -874.5 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-27 00:12:17,955 INFO L168 Benchmark]: Boogie Preprocessor took 187.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-27 00:12:17,955 INFO L168 Benchmark]: RCFGBuilder took 5446.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 243.6 MB). Peak memory consumption was 243.6 MB. Max. memory is 7.1 GB. [2018-10-27 00:12:17,957 INFO L168 Benchmark]: TraceAbstraction took 235018.88 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -101.9 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-27 00:12:17,965 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1019.75 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 361.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -874.5 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 187.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5446.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 243.6 MB). Peak memory consumption was 243.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235018.88 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.1 GB in the end (delta: -101.9 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 73). Cancelled while BasicCegarLoop was constructing difference of abstraction (10585states) and FLOYD_HOARE automaton (currently 19 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (3738 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 234.9s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 194.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 675 SDtfs, 12419 SDslu, 715 SDs, 0 SdLazy, 15092 SolverSat, 3387 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 86.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 182 GetRequests, 97 SyntacticMatches, 30 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 28.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10585occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.992300724637681 AbsIntWeakeningRatio, 0.16666666666666666 AbsIntAvgWeakeningVarsNumRemoved, 395.80833333333334 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 6 MinimizatonAttempts, 530 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 674 NumberOfCodeBlocks, 674 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 667 ConstructedInterpolants, 0 QuantifiedInterpolants, 294197 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 114/132 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown