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/Problem12_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 02:40:12,915 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 02:40:12,917 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 02:40:12,929 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 02:40:12,929 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 02:40:12,930 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 02:40:12,932 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 02:40:12,933 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 02:40:12,935 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 02:40:12,936 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 02:40:12,937 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 02:40:12,937 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 02:40:12,938 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 02:40:12,939 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 02:40:12,940 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 02:40:12,941 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 02:40:12,942 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 02:40:12,943 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 02:40:12,945 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 02:40:12,947 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 02:40:12,948 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 02:40:12,949 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 02:40:12,952 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 02:40:12,958 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 02:40:12,959 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 02:40:12,960 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 02:40:12,960 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 02:40:12,961 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 02:40:12,993 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 02:40:12,996 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 02:40:12,996 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 02:40:12,997 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 02:40:12,997 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 02:40:12,997 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 02:40:12,997 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 02:40:12,997 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 02:40:12,998 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 02:40:12,998 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 02:40:12,998 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 02:40:12,998 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 02:40:13,000 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 02:40:13,000 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 02:40:13,000 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 02:40:13,000 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 02:40:13,001 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 02:40:13,002 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 02:40:13,003 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 02:40:13,003 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 02:40:13,003 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 02:40:13,003 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 02:40:13,003 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 02:40:13,004 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 02:40:13,004 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 02:40:13,004 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 02:40:13,004 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 02:40:13,005 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 02:40:13,005 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 02:40:13,005 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 02:40:13,005 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 02:40:13,005 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 02:40:13,006 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 02:40:13,006 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 02:40:13,055 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 02:40:13,069 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 02:40:13,073 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 02:40:13,075 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 02:40:13,076 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 02:40:13,076 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label01_true-unreach-call.c [2018-10-27 02:40:13,136 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6fa5eb81b/cd9dce7f8c2546469947f29ebb318135/FLAGada6a624d [2018-10-27 02:40:13,937 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 02:40:13,938 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label01_true-unreach-call.c [2018-10-27 02:40:13,975 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6fa5eb81b/cd9dce7f8c2546469947f29ebb318135/FLAGada6a624d [2018-10-27 02:40:13,996 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6fa5eb81b/cd9dce7f8c2546469947f29ebb318135 [2018-10-27 02:40:14,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 02:40:14,014 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 02:40:14,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 02:40:14,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 02:40:14,021 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 02:40:14,023 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:40:14" (1/1) ... [2018-10-27 02:40:14,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614a20c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:14, skipping insertion in model container [2018-10-27 02:40:14,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:40:14" (1/1) ... [2018-10-27 02:40:14,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 02:40:14,201 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 02:40:15,477 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:40:15,482 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 02:40:16,112 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 02:40:16,152 INFO L193 MainTranslator]: Completed translation [2018-10-27 02:40:16,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:16 WrapperNode [2018-10-27 02:40:16,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 02:40:16,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 02:40:16,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 02:40:16,155 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 02:40:16,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:16" (1/1) ... [2018-10-27 02:40:16,241 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:16" (1/1) ... [2018-10-27 02:40:16,670 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 02:40:16,671 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 02:40:16,671 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 02:40:16,671 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 02:40:16,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:16" (1/1) ... [2018-10-27 02:40:16,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:16" (1/1) ... [2018-10-27 02:40:16,713 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:16" (1/1) ... [2018-10-27 02:40:16,713 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:16" (1/1) ... [2018-10-27 02:40:16,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:16" (1/1) ... [2018-10-27 02:40:16,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:16" (1/1) ... [2018-10-27 02:40:16,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:16" (1/1) ... [2018-10-27 02:40:17,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 02:40:17,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 02:40:17,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 02:40:17,026 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 02:40:17,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:16" (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 02:40:17,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 02:40:17,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 02:40:17,102 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 02:40:17,103 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 02:40:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 02:40:17,103 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 02:40:17,103 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 02:40:17,103 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 02:40:17,104 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 02:40:17,104 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 02:40:17,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 02:40:17,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 02:40:17,105 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 02:40:17,106 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 02:40:30,183 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 02:40:30,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:40:30 BoogieIcfgContainer [2018-10-27 02:40:30,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 02:40:30,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 02:40:30,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 02:40:30,192 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 02:40:30,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:40:14" (1/3) ... [2018-10-27 02:40:30,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456750f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:40:30, skipping insertion in model container [2018-10-27 02:40:30,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:40:16" (2/3) ... [2018-10-27 02:40:30,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@456750f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:40:30, skipping insertion in model container [2018-10-27 02:40:30,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:40:30" (3/3) ... [2018-10-27 02:40:30,197 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label01_true-unreach-call.c [2018-10-27 02:40:30,208 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 02:40:30,222 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 02:40:30,239 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 02:40:30,285 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 02:40:30,285 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 02:40:30,285 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 02:40:30,285 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 02:40:30,286 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 02:40:30,286 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 02:40:30,286 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 02:40:30,286 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 02:40:30,326 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-27 02:40:30,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-10-27 02:40:30,337 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:40:30,338 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 02:40:30,341 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:40:30,346 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:40:30,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1285582812, now seen corresponding path program 1 times [2018-10-27 02:40:30,349 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:40:30,406 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:40:30,406 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:40:30,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:40:30,407 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:40:30,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:40:30,862 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:40:30,891 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 02:40:30,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:40:30,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 02:40:30,894 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:40:30,900 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 02:40:30,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 02:40:30,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:40:30,919 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-27 02:40:38,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:40:38,985 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-27 02:40:38,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 02:40:38,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2018-10-27 02:40:38,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:40:39,025 INFO L225 Difference]: With dead ends: 2446 [2018-10-27 02:40:39,027 INFO L226 Difference]: Without dead ends: 1604 [2018-10-27 02:40:39,039 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 02:40:39,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-27 02:40:39,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-27 02:40:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-27 02:40:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 3021 transitions. [2018-10-27 02:40:39,207 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 3021 transitions. Word has length 54 [2018-10-27 02:40:39,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:40:39,207 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 3021 transitions. [2018-10-27 02:40:39,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 02:40:39,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 3021 transitions. [2018-10-27 02:40:39,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-27 02:40:39,216 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:40:39,216 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:39,217 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:40:39,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:40:39,217 INFO L82 PathProgramCache]: Analyzing trace with hash -175316350, now seen corresponding path program 1 times [2018-10-27 02:40:39,218 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:40:39,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:40:39,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:40:39,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:40:39,220 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:40:39,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:40:39,707 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:40:39,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:40:39,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:40:39,709 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:40:39,712 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:40:39,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:40:39,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:40:39,713 INFO L87 Difference]: Start difference. First operand 1604 states and 3021 transitions. Second operand 6 states. [2018-10-27 02:40:54,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:40:54,394 INFO L93 Difference]: Finished difference Result 6330 states and 12128 transitions. [2018-10-27 02:40:54,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:40:54,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-10-27 02:40:54,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:40:54,431 INFO L225 Difference]: With dead ends: 6330 [2018-10-27 02:40:54,432 INFO L226 Difference]: Without dead ends: 4732 [2018-10-27 02:40:54,442 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 02:40:54,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4732 states. [2018-10-27 02:40:54,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4732 to 4700. [2018-10-27 02:40:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2018-10-27 02:40:54,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 7674 transitions. [2018-10-27 02:40:54,584 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 7674 transitions. Word has length 132 [2018-10-27 02:40:54,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:40:54,585 INFO L481 AbstractCegarLoop]: Abstraction has 4700 states and 7674 transitions. [2018-10-27 02:40:54,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:40:54,585 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 7674 transitions. [2018-10-27 02:40:54,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-27 02:40:54,591 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:40:54,591 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:40:54,595 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:40:54,595 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:40:54,595 INFO L82 PathProgramCache]: Analyzing trace with hash 2020767262, now seen corresponding path program 1 times [2018-10-27 02:40:54,595 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:40:54,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:40:54,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:40:54,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:40:54,597 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:40:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:40:54,856 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:40:54,857 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:40:54,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 02:40:54,857 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:40:54,858 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 02:40:54,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 02:40:54,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-27 02:40:54,859 INFO L87 Difference]: Start difference. First operand 4700 states and 7674 transitions. Second operand 5 states. [2018-10-27 02:41:05,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:41:05,097 INFO L93 Difference]: Finished difference Result 14300 states and 23670 transitions. [2018-10-27 02:41:05,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 02:41:05,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-10-27 02:41:05,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:41:05,157 INFO L225 Difference]: With dead ends: 14300 [2018-10-27 02:41:05,157 INFO L226 Difference]: Without dead ends: 9606 [2018-10-27 02:41:05,174 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:41:05,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9606 states. [2018-10-27 02:41:05,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9606 to 9524. [2018-10-27 02:41:05,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9524 states. [2018-10-27 02:41:05,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9524 states to 9524 states and 14353 transitions. [2018-10-27 02:41:05,460 INFO L78 Accepts]: Start accepts. Automaton has 9524 states and 14353 transitions. Word has length 134 [2018-10-27 02:41:05,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:41:05,461 INFO L481 AbstractCegarLoop]: Abstraction has 9524 states and 14353 transitions. [2018-10-27 02:41:05,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 02:41:05,461 INFO L276 IsEmpty]: Start isEmpty. Operand 9524 states and 14353 transitions. [2018-10-27 02:41:05,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-10-27 02:41:05,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:41:05,465 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:05,465 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:41:05,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:41:05,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1670146821, now seen corresponding path program 1 times [2018-10-27 02:41:05,466 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:41:05,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:41:05,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:41:05,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:41:05,467 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:41:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:41:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:41:05,765 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:41:05,765 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:41:05,765 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:41:05,766 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:41:05,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:41:05,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:41:05,767 INFO L87 Difference]: Start difference. First operand 9524 states and 14353 transitions. Second operand 6 states. [2018-10-27 02:41:27,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:41:27,412 INFO L93 Difference]: Finished difference Result 38073 states and 60987 transitions. [2018-10-27 02:41:27,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:41:27,418 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-10-27 02:41:27,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:41:27,565 INFO L225 Difference]: With dead ends: 38073 [2018-10-27 02:41:27,565 INFO L226 Difference]: Without dead ends: 28555 [2018-10-27 02:41:27,633 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 02:41:27,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28555 states. [2018-10-27 02:41:28,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28555 to 28501. [2018-10-27 02:41:28,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28501 states. [2018-10-27 02:41:28,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28501 states to 28501 states and 41643 transitions. [2018-10-27 02:41:28,379 INFO L78 Accepts]: Start accepts. Automaton has 28501 states and 41643 transitions. Word has length 145 [2018-10-27 02:41:28,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:41:28,380 INFO L481 AbstractCegarLoop]: Abstraction has 28501 states and 41643 transitions. [2018-10-27 02:41:28,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:41:28,380 INFO L276 IsEmpty]: Start isEmpty. Operand 28501 states and 41643 transitions. [2018-10-27 02:41:28,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-10-27 02:41:28,385 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:41:28,386 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:41:28,386 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:41:28,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:41:28,386 INFO L82 PathProgramCache]: Analyzing trace with hash 160089495, now seen corresponding path program 1 times [2018-10-27 02:41:28,387 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:41:28,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:41:28,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:41:28,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:41:28,389 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:41:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:41:28,680 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:41:29,089 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 02:41:29,090 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 02:41:29,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 02:41:29,090 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:41:29,091 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 02:41:29,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 02:41:29,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 02:41:29,092 INFO L87 Difference]: Start difference. First operand 28501 states and 41643 transitions. Second operand 6 states. [2018-10-27 02:41:43,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 02:41:43,159 INFO L93 Difference]: Finished difference Result 76143 states and 117641 transitions. [2018-10-27 02:41:43,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 02:41:43,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2018-10-27 02:41:43,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 02:41:43,360 INFO L225 Difference]: With dead ends: 76143 [2018-10-27 02:41:43,360 INFO L226 Difference]: Without dead ends: 47648 [2018-10-27 02:41:43,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 02:41:43,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47648 states. [2018-10-27 02:41:44,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47648 to 47491. [2018-10-27 02:41:44,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47491 states. [2018-10-27 02:41:44,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47491 states to 47491 states and 66757 transitions. [2018-10-27 02:41:44,905 INFO L78 Accepts]: Start accepts. Automaton has 47491 states and 66757 transitions. Word has length 179 [2018-10-27 02:41:44,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 02:41:44,906 INFO L481 AbstractCegarLoop]: Abstraction has 47491 states and 66757 transitions. [2018-10-27 02:41:44,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 02:41:44,906 INFO L276 IsEmpty]: Start isEmpty. Operand 47491 states and 66757 transitions. [2018-10-27 02:41:44,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-10-27 02:41:44,917 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 02:41:44,918 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 02:41:44,918 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 02:41:44,918 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:41:44,918 INFO L82 PathProgramCache]: Analyzing trace with hash -957966671, now seen corresponding path program 1 times [2018-10-27 02:41:44,919 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 02:41:44,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:41:44,920 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 02:41:44,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 02:41:44,922 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 02:41:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 02:41:45,213 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 02:41:45,295 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 94 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 02:41:45,295 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 02:41:45,295 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 02:41:45,296 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 244 with the following transitions: [2018-10-27 02:41:45,298 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2199], [2201], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2400], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2516], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-27 02:41:45,384 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 02:41:45,385 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 02:41:49,095 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 02:41:49,523 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 02:41:49,524 INFO L272 AbstractInterpreter]: Visited 114 different actions 114 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 02:41:49,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 02:41:49,550 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 02:41:51,845 INFO L227 lantSequenceWeakener]: Weakened 235 states. On average, predicates are now at 75.67% of their original sizes. [2018-10-27 02:41:51,845 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 02:41:52,526 INFO L415 sIntCurrentIteration]: We unified 242 AI predicates to 242 [2018-10-27 02:41:52,527 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 02:41:52,528 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 02:41:52,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-27 02:41:52,528 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 02:41:52,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 02:41:52,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 02:41:52,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-27 02:41:52,530 INFO L87 Difference]: Start difference. First operand 47491 states and 66757 transitions. Second operand 8 states. Received shutdown request... [2018-10-27 02:44:00,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 02:44:00,579 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 02:44:00,584 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 02:44:00,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:44:00 BoogieIcfgContainer [2018-10-27 02:44:00,584 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 02:44:00,585 INFO L168 Benchmark]: Toolchain (without parser) took 226573.40 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -407.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-27 02:44:00,587 INFO L168 Benchmark]: CDTParser took 0.20 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 02:44:00,587 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2138.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-27 02:44:00,588 INFO L168 Benchmark]: Boogie Procedure Inliner took 516.31 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 815.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-27 02:44:00,589 INFO L168 Benchmark]: Boogie Preprocessor took 353.75 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: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2018-10-27 02:44:00,590 INFO L168 Benchmark]: RCFGBuilder took 13162.24 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 174.1 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -173.3 MB). Peak memory consumption was 668.1 MB. Max. memory is 7.1 GB. [2018-10-27 02:44:00,591 INFO L168 Benchmark]: TraceAbstraction took 210396.04 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 1.8 GB in the end (delta: 585.7 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-27 02:44:00,597 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2138.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 516.31 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 815.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 353.75 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: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13162.24 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 174.1 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -173.3 MB). Peak memory consumption was 668.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210396.04 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 1.8 GB in the end (delta: 585.7 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 153]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 153). Cancelled while BasicCegarLoop was constructing difference of abstraction (47491states) and FLOYD_HOARE automaton (currently 8 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (29417 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 210.3s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 197.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1056 SDtfs, 17593 SDslu, 1107 SDs, 0 SdLazy, 28252 SolverSat, 6078 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 154.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 285 GetRequests, 249 SyntacticMatches, 4 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47491occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9959949141767324 AbsIntWeakeningRatio, 0.1115702479338843 AbsIntAvgWeakeningVarsNumRemoved, 1050.9876033057851 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 325 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 887 NumberOfCodeBlocks, 887 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 881 ConstructedInterpolants, 0 QuantifiedInterpolants, 595863 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 287/362 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown