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/Problem18_label43_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 02:16:10,772 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 02:16:10,780 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 02:16:10,799 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 02:16:10,799 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 02:16:10,801 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 02:16:10,802 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 02:16:10,804 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 02:16:10,806 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 02:16:10,806 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 02:16:10,807 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 02:16:10,808 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 02:16:10,808 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 02:16:10,809 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 02:16:10,819 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 02:16:10,820 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 02:16:10,820 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 02:16:10,824 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 02:16:10,826 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 02:16:10,828 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 02:16:10,829 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 02:16:10,830 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 02:16:10,832 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 02:16:10,840 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 02:16:10,868 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 02:16:10,868 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 02:16:10,869 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 02:16:10,869 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 02:16:10,869 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 02:16:10,869 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 02:16:10,870 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 02:16:10,870 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 02:16:10,870 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 02:16:10,870 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 02:16:10,870 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 02:16:10,870 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 02:16:10,871 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 02:16:10,871 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 02:16:10,872 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 02:16:10,872 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 02:16:10,872 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 02:16:10,873 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 02:16:10,873 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 02:16:10,873 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 02:16:10,873 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 02:16:10,874 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 02:16:10,874 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 02:16:10,874 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 02:16:10,874 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:16:10,874 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 02:16:10,875 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 02:16:10,876 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 02:16:10,876 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 02:16:10,876 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 02:16:10,876 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 02:16:10,876 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 02:16:10,876 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 02:16:10,877 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 02:16:10,945 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 02:16:10,958 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 02:16:10,962 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 02:16:10,964 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 02:16:10,965 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 02:16:10,965 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label43_true-unreach-call.c [2018-10-24 02:16:11,024 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0573c8ca2/722b84b403854b5caeaa54935cfec411/FLAGa7b205a49 [2018-10-24 02:16:11,789 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 02:16:11,790 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label43_true-unreach-call.c [2018-10-24 02:16:11,814 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0573c8ca2/722b84b403854b5caeaa54935cfec411/FLAGa7b205a49 [2018-10-24 02:16:11,831 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0573c8ca2/722b84b403854b5caeaa54935cfec411 [2018-10-24 02:16:11,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 02:16:11,844 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 02:16:11,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 02:16:11,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 02:16:11,850 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 02:16:11,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:16:11" (1/1) ... [2018-10-24 02:16:11,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fd5a079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:11, skipping insertion in model container [2018-10-24 02:16:11,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:16:11" (1/1) ... [2018-10-24 02:16:11,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 02:16:11,982 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 02:16:12,991 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:16:12,996 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 02:16:13,436 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:16:13,468 INFO L193 MainTranslator]: Completed translation [2018-10-24 02:16:13,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:13 WrapperNode [2018-10-24 02:16:13,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 02:16:13,470 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 02:16:13,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 02:16:13,471 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 02:16:13,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:13" (1/1) ... [2018-10-24 02:16:13,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:13" (1/1) ... [2018-10-24 02:16:13,880 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 02:16:13,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 02:16:13,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 02:16:13,881 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 02:16:13,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:13" (1/1) ... [2018-10-24 02:16:13,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:13" (1/1) ... [2018-10-24 02:16:13,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:13" (1/1) ... [2018-10-24 02:16:13,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:13" (1/1) ... [2018-10-24 02:16:13,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:13" (1/1) ... [2018-10-24 02:16:14,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:13" (1/1) ... [2018-10-24 02:16:14,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:13" (1/1) ... [2018-10-24 02:16:14,083 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 02:16:14,083 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 02:16:14,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 02:16:14,084 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 02:16:14,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:13" (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 02:16:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 02:16:14,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 02:16:14,161 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 02:16:14,162 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 02:16:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 02:16:14,162 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 02:16:14,162 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 02:16:14,163 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 02:16:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 02:16:14,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 02:16:14,163 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 02:16:14,163 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 02:16:22,104 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 02:16:22,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:16:22 BoogieIcfgContainer [2018-10-24 02:16:22,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 02:16:22,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 02:16:22,107 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 02:16:22,111 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 02:16:22,111 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:16:11" (1/3) ... [2018-10-24 02:16:22,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72701a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:16:22, skipping insertion in model container [2018-10-24 02:16:22,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:16:13" (2/3) ... [2018-10-24 02:16:22,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72701a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:16:22, skipping insertion in model container [2018-10-24 02:16:22,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:16:22" (3/3) ... [2018-10-24 02:16:22,115 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label43_true-unreach-call.c [2018-10-24 02:16:22,125 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 02:16:22,135 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 02:16:22,154 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 02:16:22,201 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 02:16:22,202 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 02:16:22,202 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 02:16:22,202 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 02:16:22,202 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 02:16:22,202 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 02:16:22,203 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 02:16:22,203 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 02:16:22,243 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 02:16:22,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-24 02:16:22,255 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:16:22,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:16:22,259 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:16:22,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:16:22,266 INFO L82 PathProgramCache]: Analyzing trace with hash 2013780399, now seen corresponding path program 1 times [2018-10-24 02:16:22,269 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:16:22,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:16:22,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:16:22,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:16:22,323 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:16:22,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:16:22,839 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:16:22,965 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 02:16:22,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:16:22,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 02:16:22,968 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:16:22,974 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 02:16:22,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 02:16:22,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 02:16:22,994 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 02:16:29,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:16:29,614 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 02:16:29,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 02:16:29,616 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-10-24 02:16:29,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:16:29,657 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 02:16:29,657 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 02:16:29,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 02:16:29,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 02:16:29,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 02:16:29,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 02:16:29,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-10-24 02:16:29,811 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 73 [2018-10-24 02:16:29,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:16:29,812 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-10-24 02:16:29,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 02:16:29,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-10-24 02:16:29,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-10-24 02:16:29,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:16:29,823 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, 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] [2018-10-24 02:16:29,824 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:16:29,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:16:29,824 INFO L82 PathProgramCache]: Analyzing trace with hash -928614391, now seen corresponding path program 1 times [2018-10-24 02:16:29,824 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:16:29,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:16:29,826 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:16:29,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:16:29,826 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:16:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:16:30,136 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:16:30,136 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:16:30,136 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:16:30,136 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:16:30,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:16:30,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:16:30,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:16:30,140 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-10-24 02:16:40,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:16:40,244 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-10-24 02:16:40,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:16:40,245 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2018-10-24 02:16:40,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:16:40,267 INFO L225 Difference]: With dead ends: 4419 [2018-10-24 02:16:40,267 INFO L226 Difference]: Without dead ends: 2951 [2018-10-24 02:16:40,273 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 02:16:40,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-24 02:16:40,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-10-24 02:16:40,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-10-24 02:16:40,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-10-24 02:16:40,379 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 162 [2018-10-24 02:16:40,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:16:40,380 INFO L481 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-10-24 02:16:40,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:16:40,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-10-24 02:16:40,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-24 02:16:40,390 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:16:40,390 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:16:40,391 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:16:40,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:16:40,391 INFO L82 PathProgramCache]: Analyzing trace with hash 2132673540, now seen corresponding path program 1 times [2018-10-24 02:16:40,391 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:16:40,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:16:40,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:16:40,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:16:40,397 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:16:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:16:40,846 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:16:40,847 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:16:40,847 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:16:40,847 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:16:40,848 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:16:40,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:16:40,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:16:40,849 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-10-24 02:16:46,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:16:46,455 INFO L93 Difference]: Finished difference Result 6669 states and 11522 transitions. [2018-10-24 02:16:46,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:16:46,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2018-10-24 02:16:46,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:16:46,476 INFO L225 Difference]: With dead ends: 6669 [2018-10-24 02:16:46,476 INFO L226 Difference]: Without dead ends: 3747 [2018-10-24 02:16:46,485 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 02:16:46,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2018-10-24 02:16:46,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 3689. [2018-10-24 02:16:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3689 states. [2018-10-24 02:16:46,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3689 states to 3689 states and 5891 transitions. [2018-10-24 02:16:46,585 INFO L78 Accepts]: Start accepts. Automaton has 3689 states and 5891 transitions. Word has length 209 [2018-10-24 02:16:46,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:16:46,585 INFO L481 AbstractCegarLoop]: Abstraction has 3689 states and 5891 transitions. [2018-10-24 02:16:46,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:16:46,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3689 states and 5891 transitions. [2018-10-24 02:16:46,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-10-24 02:16:46,590 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:16:46,590 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, 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] [2018-10-24 02:16:46,590 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:16:46,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:16:46,591 INFO L82 PathProgramCache]: Analyzing trace with hash 2039872936, now seen corresponding path program 1 times [2018-10-24 02:16:46,591 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:16:46,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:16:46,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:16:46,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:16:46,592 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:16:46,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:16:46,903 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:16:47,017 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:16:47,018 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:16:47,018 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:16:47,018 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:16:47,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:16:47,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:16:47,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:16:47,020 INFO L87 Difference]: Start difference. First operand 3689 states and 5891 transitions. Second operand 6 states. [2018-10-24 02:16:52,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:16:52,170 INFO L93 Difference]: Finished difference Result 9623 states and 15373 transitions. [2018-10-24 02:16:52,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:16:52,171 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-10-24 02:16:52,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:16:52,202 INFO L225 Difference]: With dead ends: 9623 [2018-10-24 02:16:52,202 INFO L226 Difference]: Without dead ends: 5940 [2018-10-24 02:16:52,216 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 02:16:52,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5940 states. [2018-10-24 02:16:52,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5940 to 5889. [2018-10-24 02:16:52,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5889 states. [2018-10-24 02:16:52,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5889 states to 5889 states and 8064 transitions. [2018-10-24 02:16:52,365 INFO L78 Accepts]: Start accepts. Automaton has 5889 states and 8064 transitions. Word has length 211 [2018-10-24 02:16:52,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:16:52,366 INFO L481 AbstractCegarLoop]: Abstraction has 5889 states and 8064 transitions. [2018-10-24 02:16:52,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:16:52,366 INFO L276 IsEmpty]: Start isEmpty. Operand 5889 states and 8064 transitions. [2018-10-24 02:16:52,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-10-24 02:16:52,373 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:16:52,373 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, 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, 1, 1, 1, 1, 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 02:16:52,373 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:16:52,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:16:52,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1691415403, now seen corresponding path program 1 times [2018-10-24 02:16:52,374 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:16:52,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:16:52,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:16:52,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:16:52,375 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:16:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:16:52,659 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 135 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-10-24 02:16:52,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:16:52,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 02:16:52,660 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:16:52,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 02:16:52,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 02:16:52,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 02:16:52,662 INFO L87 Difference]: Start difference. First operand 5889 states and 8064 transitions. Second operand 4 states. [2018-10-24 02:17:01,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:17:01,685 INFO L93 Difference]: Finished difference Result 23211 states and 32875 transitions. [2018-10-24 02:17:01,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 02:17:01,694 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 269 [2018-10-24 02:17:01,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:17:01,760 INFO L225 Difference]: With dead ends: 23211 [2018-10-24 02:17:01,761 INFO L226 Difference]: Without dead ends: 17328 [2018-10-24 02:17:01,790 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 02:17:01,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17328 states. [2018-10-24 02:17:02,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17328 to 17328. [2018-10-24 02:17:02,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17328 states. [2018-10-24 02:17:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17328 states to 17328 states and 23091 transitions. [2018-10-24 02:17:02,155 INFO L78 Accepts]: Start accepts. Automaton has 17328 states and 23091 transitions. Word has length 269 [2018-10-24 02:17:02,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:17:02,156 INFO L481 AbstractCegarLoop]: Abstraction has 17328 states and 23091 transitions. [2018-10-24 02:17:02,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 02:17:02,156 INFO L276 IsEmpty]: Start isEmpty. Operand 17328 states and 23091 transitions. [2018-10-24 02:17:02,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2018-10-24 02:17:02,198 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:17:02,198 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:02,199 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:17:02,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:17:02,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1084028798, now seen corresponding path program 1 times [2018-10-24 02:17:02,199 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:17:02,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:17:02,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:17:02,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:17:02,201 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:17:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:17:03,071 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 253 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:17:03,071 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:17:03,071 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:17:03,072 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 475 with the following transitions: [2018-10-24 02:17:03,075 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2095], [2103], [2107], [2109], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [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], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2948], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 02:17:03,202 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:17:03,202 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:17:11,210 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 02:17:11,211 INFO L272 AbstractInterpreter]: Visited 283 different actions 283 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 02:17:11,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:17:11,233 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 02:17:14,739 INFO L232 lantSequenceWeakener]: Weakened 466 states. On average, predicates are now at 77.85% of their original sizes. [2018-10-24 02:17:14,739 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 02:17:15,376 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 02:17:15,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 02:17:15,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-24 02:17:15,378 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:17:15,379 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 02:17:15,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 02:17:15,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 02:17:15,379 INFO L87 Difference]: Start difference. First operand 17328 states and 23091 transitions. Second operand 8 states. [2018-10-24 02:17:20,133 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:18:04,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:18:04,982 INFO L93 Difference]: Finished difference Result 35355 states and 46995 transitions. [2018-10-24 02:18:04,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 02:18:04,983 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 474 [2018-10-24 02:18:04,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:18:05,043 INFO L225 Difference]: With dead ends: 35355 [2018-10-24 02:18:05,043 INFO L226 Difference]: Without dead ends: 18033 [2018-10-24 02:18:05,090 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 475 GetRequests, 467 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 02:18:05,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18033 states. [2018-10-24 02:18:05,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18033 to 18031. [2018-10-24 02:18:05,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18031 states. [2018-10-24 02:18:05,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18031 states to 18031 states and 23806 transitions. [2018-10-24 02:18:05,418 INFO L78 Accepts]: Start accepts. Automaton has 18031 states and 23806 transitions. Word has length 474 [2018-10-24 02:18:05,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:18:05,418 INFO L481 AbstractCegarLoop]: Abstraction has 18031 states and 23806 transitions. [2018-10-24 02:18:05,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 02:18:05,419 INFO L276 IsEmpty]: Start isEmpty. Operand 18031 states and 23806 transitions. [2018-10-24 02:18:05,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2018-10-24 02:18:05,467 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:18:05,467 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:18:05,468 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:18:05,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:18:05,469 INFO L82 PathProgramCache]: Analyzing trace with hash -571263680, now seen corresponding path program 1 times [2018-10-24 02:18:05,469 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:18:05,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:18:05,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:18:05,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:18:05,470 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:18:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:18:06,111 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 02:18:06,901 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 257 proven. 369 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 02:18:06,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:18:06,902 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:18:06,902 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 662 with the following transitions: [2018-10-24 02:18:06,903 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2095], [2103], [2107], [2109], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [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], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2948], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 02:18:06,912 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:18:06,912 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:18:25,320 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 02:18:25,320 INFO L272 AbstractInterpreter]: Visited 287 different actions 567 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 02:18:25,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:18:25,331 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 02:18:31,736 INFO L232 lantSequenceWeakener]: Weakened 330 states. On average, predicates are now at 77.64% of their original sizes. [2018-10-24 02:18:31,737 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 02:19:33,556 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 02:19:33,557 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 02:19:33,557 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-10-24 02:19:33,557 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:19:33,558 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 02:19:33,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 02:19:33,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-10-24 02:19:33,559 INFO L87 Difference]: Start difference. First operand 18031 states and 23806 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 02:19:57,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 02:19:57,899 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 02:19:57,905 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 02:19:57,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:19:57 BoogieIcfgContainer [2018-10-24 02:19:57,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 02:19:57,906 INFO L168 Benchmark]: Toolchain (without parser) took 226063.14 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 408.8 MB. Max. memory is 7.1 GB. [2018-10-24 02:19:57,907 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 02:19:57,908 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1624.60 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 02:19:57,909 INFO L168 Benchmark]: Boogie Procedure Inliner took 410.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -928.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2018-10-24 02:19:57,910 INFO L168 Benchmark]: Boogie Preprocessor took 202.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2018-10-24 02:19:57,910 INFO L168 Benchmark]: RCFGBuilder took 8022.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 504.6 MB). Peak memory consumption was 504.6 MB. Max. memory is 7.1 GB. [2018-10-24 02:19:57,911 INFO L168 Benchmark]: TraceAbstraction took 215798.57 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.6 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 02:19:57,916 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1624.60 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: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 410.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -928.6 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 202.12 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8022.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 504.6 MB). Peak memory consumption was 504.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 215798.57 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.6 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 207]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 207). Cancelled while BasicCegarLoop was constructing difference of abstraction (18031states) and FLOYD_HOARE automaton (currently 9 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (74 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 215.7s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 110.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1522 SDtfs, 11771 SDslu, 684 SDs, 0 SdLazy, 19036 SolverSat, 6089 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 56.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 1179 GetRequests, 1014 SyntacticMatches, 114 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 62.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18031occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 26.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9978430356754542 AbsIntWeakeningRatio, 0.05119152691968226 AbsIntAvgWeakeningVarsNumRemoved, 451.07766990291265 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 134 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 2059 NumberOfCodeBlocks, 2059 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 2052 ConstructedInterpolants, 0 QuantifiedInterpolants, 4302611 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 934/1305 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown