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/Problem19_label25_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:29:19,832 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:29:19,837 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:29:19,855 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:29:19,856 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:29:19,857 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:29:19,858 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:29:19,860 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:29:19,862 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:29:19,863 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:29:19,865 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:29:19,866 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:29:19,867 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:29:19,868 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:29:19,871 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:29:19,879 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:29:19,880 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:29:19,883 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:29:19,887 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:29:19,890 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:29:19,892 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:29:19,894 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:29:19,898 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:29:19,910 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 [2018-10-24 22:29:19,937 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:29:19,938 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:29:19,939 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:29:19,939 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:29:19,939 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:29:19,939 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:29:19,940 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:29:19,940 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:29:19,940 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:29:19,940 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:29:19,940 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:29:19,941 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:29:19,941 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:29:19,941 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:29:19,943 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:29:19,943 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:29:19,943 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:29:19,943 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:29:19,943 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:29:19,943 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:29:19,945 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:29:19,945 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:29:19,945 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:29:19,945 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:29:19,946 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:29:19,946 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:29:19,946 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:29:19,946 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:29:19,946 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:29:19,947 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:29:19,947 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:29:19,947 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:29:19,947 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:29:19,947 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:29:20,018 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:29:20,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:29:20,040 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:29:20,041 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:29:20,041 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:29:20,042 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label25_true-unreach-call.c [2018-10-24 22:29:20,097 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/43fdaceb1/5cc56c9831f64774b514ce152ca12fc9/FLAG2c7333370 [2018-10-24 22:29:20,977 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:29:20,978 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label25_true-unreach-call.c [2018-10-24 22:29:21,019 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/43fdaceb1/5cc56c9831f64774b514ce152ca12fc9/FLAG2c7333370 [2018-10-24 22:29:21,034 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/43fdaceb1/5cc56c9831f64774b514ce152ca12fc9 [2018-10-24 22:29:21,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:29:21,047 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:29:21,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:29:21,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:29:21,052 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:29:21,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:29:21" (1/1) ... [2018-10-24 22:29:21,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8de4687 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:21, skipping insertion in model container [2018-10-24 22:29:21,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:29:21" (1/1) ... [2018-10-24 22:29:21,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:29:21,298 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:29:23,152 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:29:23,156 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:29:24,214 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:29:24,276 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:29:24,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:24 WrapperNode [2018-10-24 22:29:24,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:29:24,278 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:29:24,278 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:29:24,278 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:29:24,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:24" (1/1) ... [2018-10-24 22:29:24,398 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:24" (1/1) ... [2018-10-24 22:29:25,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:29:25,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:29:25,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:29:25,059 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:29:25,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:24" (1/1) ... [2018-10-24 22:29:25,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:24" (1/1) ... [2018-10-24 22:29:25,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:24" (1/1) ... [2018-10-24 22:29:25,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:24" (1/1) ... [2018-10-24 22:29:25,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:24" (1/1) ... [2018-10-24 22:29:25,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:24" (1/1) ... [2018-10-24 22:29:25,416 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:24" (1/1) ... [2018-10-24 22:29:25,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:29:25,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:29:25,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:29:25,515 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:29:25,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:24" (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 22:29:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:29:25,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:29:25,583 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 22:29:25,584 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 22:29:25,584 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 22:29:25,584 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 22:29:25,584 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 22:29:25,584 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 22:29:25,585 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 22:29:25,585 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 22:29:25,585 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:29:25,585 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:29:25,585 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:29:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:29:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:29:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:29:25,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:29:25,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:29:44,806 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:29:44,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:29:44 BoogieIcfgContainer [2018-10-24 22:29:44,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:29:44,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:29:44,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:29:44,815 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:29:44,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:29:21" (1/3) ... [2018-10-24 22:29:44,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d98ae1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:29:44, skipping insertion in model container [2018-10-24 22:29:44,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:29:24" (2/3) ... [2018-10-24 22:29:44,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d98ae1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:29:44, skipping insertion in model container [2018-10-24 22:29:44,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:29:44" (3/3) ... [2018-10-24 22:29:44,819 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label25_true-unreach-call.c [2018-10-24 22:29:44,829 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:29:44,841 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:29:44,858 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:29:44,924 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:29:44,924 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:29:44,924 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:29:44,925 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:29:44,925 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:29:44,925 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:29:44,925 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:29:44,925 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:29:44,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 22:29:45,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-24 22:29:45,001 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:29:45,002 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:29:45,007 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:29:45,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:29:45,015 INFO L82 PathProgramCache]: Analyzing trace with hash -2043790486, now seen corresponding path program 1 times [2018-10-24 22:29:45,018 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:29:45,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:29:45,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:29:45,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:29:45,077 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:29:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:29:45,544 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 22:29:45,571 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 22:29:45,574 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:29:45,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:29:45,575 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:29:45,581 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:29:45,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:29:45,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:29:45,605 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-10-24 22:30:11,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:30:11,338 INFO L93 Difference]: Finished difference Result 6465 states and 12332 transitions. [2018-10-24 22:30:11,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:30:11,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-10-24 22:30:11,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:30:11,392 INFO L225 Difference]: With dead ends: 6465 [2018-10-24 22:30:11,393 INFO L226 Difference]: Without dead ends: 4681 [2018-10-24 22:30:11,407 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 22:30:11,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2018-10-24 22:30:11,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 3200. [2018-10-24 22:30:11,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3200 states. [2018-10-24 22:30:11,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5132 transitions. [2018-10-24 22:30:11,663 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5132 transitions. Word has length 43 [2018-10-24 22:30:11,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:30:11,664 INFO L481 AbstractCegarLoop]: Abstraction has 3200 states and 5132 transitions. [2018-10-24 22:30:11,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:30:11,665 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5132 transitions. [2018-10-24 22:30:11,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-24 22:30:11,673 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:30:11,673 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:11,673 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:30:11,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:30:11,676 INFO L82 PathProgramCache]: Analyzing trace with hash 96835924, now seen corresponding path program 1 times [2018-10-24 22:30:11,676 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:30:11,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:30:11,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:30:11,678 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:30:11,678 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:30:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:30:12,063 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:30:12,464 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:30:12,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:30:12,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:30:12,464 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:30:12,466 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:30:12,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:30:12,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:30:12,467 INFO L87 Difference]: Start difference. First operand 3200 states and 5132 transitions. Second operand 6 states. [2018-10-24 22:30:42,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:30:42,912 INFO L93 Difference]: Finished difference Result 12097 states and 19723 transitions. [2018-10-24 22:30:42,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:30:42,915 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-10-24 22:30:42,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:30:42,968 INFO L225 Difference]: With dead ends: 12097 [2018-10-24 22:30:42,968 INFO L226 Difference]: Without dead ends: 8903 [2018-10-24 22:30:42,982 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:30:42,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8903 states. [2018-10-24 22:30:43,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8903 to 8846. [2018-10-24 22:30:43,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8846 states. [2018-10-24 22:30:43,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8846 states to 8846 states and 12708 transitions. [2018-10-24 22:30:43,235 INFO L78 Accepts]: Start accepts. Automaton has 8846 states and 12708 transitions. Word has length 115 [2018-10-24 22:30:43,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:30:43,235 INFO L481 AbstractCegarLoop]: Abstraction has 8846 states and 12708 transitions. [2018-10-24 22:30:43,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:30:43,236 INFO L276 IsEmpty]: Start isEmpty. Operand 8846 states and 12708 transitions. [2018-10-24 22:30:43,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 22:30:43,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:30:43,240 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:30:43,241 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:30:43,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:30:43,241 INFO L82 PathProgramCache]: Analyzing trace with hash 554705181, now seen corresponding path program 1 times [2018-10-24 22:30:43,241 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:30:43,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:30:43,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:30:43,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:30:43,243 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:30:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:30:43,721 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:30:43,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:30:43,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:30:43,721 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:30:43,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:30:43,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:30:43,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:30:43,723 INFO L87 Difference]: Start difference. First operand 8846 states and 12708 transitions. Second operand 6 states. [2018-10-24 22:31:09,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:31:09,021 INFO L93 Difference]: Finished difference Result 29443 states and 43438 transitions. [2018-10-24 22:31:09,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:31:09,026 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-24 22:31:09,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:31:09,129 INFO L225 Difference]: With dead ends: 29443 [2018-10-24 22:31:09,129 INFO L226 Difference]: Without dead ends: 20603 [2018-10-24 22:31:09,171 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 [2018-10-24 22:31:09,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20603 states. [2018-10-24 22:31:09,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20603 to 20447. [2018-10-24 22:31:09,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20447 states. [2018-10-24 22:31:09,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20447 states to 20447 states and 28690 transitions. [2018-10-24 22:31:09,676 INFO L78 Accepts]: Start accepts. Automaton has 20447 states and 28690 transitions. Word has length 117 [2018-10-24 22:31:09,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:31:09,676 INFO L481 AbstractCegarLoop]: Abstraction has 20447 states and 28690 transitions. [2018-10-24 22:31:09,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:31:09,677 INFO L276 IsEmpty]: Start isEmpty. Operand 20447 states and 28690 transitions. [2018-10-24 22:31:09,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 22:31:09,688 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:31:09,688 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:09,689 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:31:09,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:31:09,689 INFO L82 PathProgramCache]: Analyzing trace with hash -730954474, now seen corresponding path program 1 times [2018-10-24 22:31:09,689 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:31:09,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:31:09,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:31:09,692 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:31:09,692 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:31:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:31:10,209 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:31:10,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:31:10,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:31:10,210 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:31:10,211 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:31:10,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:31:10,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:31:10,211 INFO L87 Difference]: Start difference. First operand 20447 states and 28690 transitions. Second operand 6 states. [2018-10-24 22:31:33,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:31:33,994 INFO L93 Difference]: Finished difference Result 62296 states and 89747 transitions. [2018-10-24 22:31:33,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 22:31:33,995 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-24 22:31:33,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:31:34,153 INFO L225 Difference]: With dead ends: 62296 [2018-10-24 22:31:34,153 INFO L226 Difference]: Without dead ends: 41855 [2018-10-24 22:31:34,212 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:31:34,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41855 states. [2018-10-24 22:31:35,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41855 to 41518. [2018-10-24 22:31:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41518 states. [2018-10-24 22:31:35,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41518 states to 41518 states and 57765 transitions. [2018-10-24 22:31:35,457 INFO L78 Accepts]: Start accepts. Automaton has 41518 states and 57765 transitions. Word has length 125 [2018-10-24 22:31:35,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:31:35,457 INFO L481 AbstractCegarLoop]: Abstraction has 41518 states and 57765 transitions. [2018-10-24 22:31:35,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:31:35,458 INFO L276 IsEmpty]: Start isEmpty. Operand 41518 states and 57765 transitions. [2018-10-24 22:31:35,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-24 22:31:35,461 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:31:35,461 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:31:35,462 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:31:35,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:31:35,462 INFO L82 PathProgramCache]: Analyzing trace with hash 1382979436, now seen corresponding path program 1 times [2018-10-24 22:31:35,462 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:31:35,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:31:35,463 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:31:35,463 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:31:35,463 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:31:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:31:35,796 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:31:35,796 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:31:35,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:31:35,797 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:31:35,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:31:35,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:31:35,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:31:35,798 INFO L87 Difference]: Start difference. First operand 41518 states and 57765 transitions. Second operand 5 states. [2018-10-24 22:32:11,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:32:11,619 INFO L93 Difference]: Finished difference Result 125877 states and 180446 transitions. [2018-10-24 22:32:11,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:32:11,624 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-10-24 22:32:11,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:32:11,905 INFO L225 Difference]: With dead ends: 125877 [2018-10-24 22:32:11,905 INFO L226 Difference]: Without dead ends: 84365 [2018-10-24 22:32:12,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:32:12,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84365 states. [2018-10-24 22:32:13,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84365 to 83171. [2018-10-24 22:32:13,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83171 states. [2018-10-24 22:32:13,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83171 states to 83171 states and 107207 transitions. [2018-10-24 22:32:13,519 INFO L78 Accepts]: Start accepts. Automaton has 83171 states and 107207 transitions. Word has length 145 [2018-10-24 22:32:13,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:32:13,520 INFO L481 AbstractCegarLoop]: Abstraction has 83171 states and 107207 transitions. [2018-10-24 22:32:13,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:32:13,520 INFO L276 IsEmpty]: Start isEmpty. Operand 83171 states and 107207 transitions. [2018-10-24 22:32:13,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-10-24 22:32:13,528 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:32:13,529 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:13,529 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:32:13,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:32:13,530 INFO L82 PathProgramCache]: Analyzing trace with hash 544420257, now seen corresponding path program 1 times [2018-10-24 22:32:13,530 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:32:13,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:13,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:32:13,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:13,531 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:32:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:32:13,835 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 22:32:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:32:13,912 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:32:13,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:32:13,912 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:32:13,913 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:32:13,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:32:13,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:32:13,914 INFO L87 Difference]: Start difference. First operand 83171 states and 107207 transitions. Second operand 6 states. [2018-10-24 22:32:31,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:32:31,079 INFO L93 Difference]: Finished difference Result 188147 states and 253112 transitions. [2018-10-24 22:32:31,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:32:31,080 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 208 [2018-10-24 22:32:31,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:32:31,411 INFO L225 Difference]: With dead ends: 188147 [2018-10-24 22:32:31,411 INFO L226 Difference]: Without dead ends: 104982 [2018-10-24 22:32:32,357 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 [2018-10-24 22:32:32,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104982 states. [2018-10-24 22:32:33,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104982 to 104219. [2018-10-24 22:32:33,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104219 states. [2018-10-24 22:32:34,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104219 states to 104219 states and 134711 transitions. [2018-10-24 22:32:34,057 INFO L78 Accepts]: Start accepts. Automaton has 104219 states and 134711 transitions. Word has length 208 [2018-10-24 22:32:34,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:32:34,057 INFO L481 AbstractCegarLoop]: Abstraction has 104219 states and 134711 transitions. [2018-10-24 22:32:34,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:32:34,058 INFO L276 IsEmpty]: Start isEmpty. Operand 104219 states and 134711 transitions. [2018-10-24 22:32:34,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2018-10-24 22:32:34,072 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:32:34,073 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:32:34,073 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:32:34,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:32:34,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1346825870, now seen corresponding path program 1 times [2018-10-24 22:32:34,074 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:32:34,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:34,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:32:34,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:32:34,075 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:32:34,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:32:34,613 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:32:34,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:32:34,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:32:34,614 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:32:34,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:32:34,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:32:34,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:32:34,617 INFO L87 Difference]: Start difference. First operand 104219 states and 134711 transitions. Second operand 4 states. [2018-10-24 22:32:59,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:32:59,244 INFO L93 Difference]: Finished difference Result 296493 states and 401447 transitions. [2018-10-24 22:32:59,244 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:32:59,245 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 530 [2018-10-24 22:32:59,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:33:01,096 INFO L225 Difference]: With dead ends: 296493 [2018-10-24 22:33:01,096 INFO L226 Difference]: Without dead ends: 192280 [2018-10-24 22:33:01,277 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:33:01,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192280 states. [2018-10-24 22:33:03,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192280 to 191982. [2018-10-24 22:33:03,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191982 states. [2018-10-24 22:33:05,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191982 states to 191982 states and 250006 transitions. [2018-10-24 22:33:05,548 INFO L78 Accepts]: Start accepts. Automaton has 191982 states and 250006 transitions. Word has length 530 [2018-10-24 22:33:05,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:33:05,549 INFO L481 AbstractCegarLoop]: Abstraction has 191982 states and 250006 transitions. [2018-10-24 22:33:05,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:33:05,549 INFO L276 IsEmpty]: Start isEmpty. Operand 191982 states and 250006 transitions. [2018-10-24 22:33:05,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 638 [2018-10-24 22:33:05,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:33:05,579 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:33:05,579 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:33:05,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:33:05,579 INFO L82 PathProgramCache]: Analyzing trace with hash -1115290536, now seen corresponding path program 1 times [2018-10-24 22:33:05,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:33:05,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:33:05,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:33:05,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:33:05,581 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:33:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:33:06,255 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:33:06,255 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:33:06,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:33:06,256 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:33:06,256 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:33:06,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:33:06,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:33:06,257 INFO L87 Difference]: Start difference. First operand 191982 states and 250006 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 22:33:10,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:33:10,490 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:33:10,496 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:33:10,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:33:10 BoogieIcfgContainer [2018-10-24 22:33:10,496 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:33:10,497 INFO L168 Benchmark]: Toolchain (without parser) took 229451.60 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 376.0 MB). Peak memory consumption was 2.6 GB. Max. memory is 7.1 GB. [2018-10-24 22:33:10,499 INFO L168 Benchmark]: CDTParser took 0.14 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. [2018-10-24 22:33:10,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3229.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:33:10,500 INFO L168 Benchmark]: Boogie Procedure Inliner took 780.66 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 859.8 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.0 MB. Max. memory is 7.1 GB. [2018-10-24 22:33:10,501 INFO L168 Benchmark]: Boogie Preprocessor took 455.59 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-10-24 22:33:10,502 INFO L168 Benchmark]: RCFGBuilder took 19292.22 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 168.8 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 503.0 MB). Peak memory consumption was 671.8 MB. Max. memory is 7.1 GB. [2018-10-24 22:33:10,503 INFO L168 Benchmark]: TraceAbstraction took 205685.30 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 1.7 GB in the beginning and 1.0 GB in the end (delta: 691.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 22:33:10,509 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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 3229.47 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 780.66 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 859.8 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 117.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 455.59 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 19292.22 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 168.8 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 503.0 MB). Peak memory consumption was 671.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205685.30 ms. Allocated memory was 2.6 GB in the beginning and 3.8 GB in the end (delta: 1.2 GB). Free memory was 1.7 GB in the beginning and 1.0 GB in the end (delta: 691.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 124]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 124). Cancelled while BasicCegarLoop was constructing difference of abstraction (191982states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (42803 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 205.5s OverallTime, 8 OverallIterations, 2 TraceHistogramMax, 191.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 6948 SDtfs, 47437 SDslu, 5247 SDs, 0 SdLazy, 73293 SolverSat, 19024 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 160.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=191982occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 9.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 4286 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 1920 NumberOfCodeBlocks, 1920 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1912 ConstructedInterpolants, 0 QuantifiedInterpolants, 1306647 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 252/252 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown