java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 04:05:39,855 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 04:05:39,858 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 04:05:39,870 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 04:05:39,871 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 04:05:39,872 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 04:05:39,873 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 04:05:39,875 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 04:05:39,877 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 04:05:39,881 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 04:05:39,882 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 04:05:39,885 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 04:05:39,886 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 04:05:39,887 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 04:05:39,888 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 04:05:39,889 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 04:05:39,890 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 04:05:39,892 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 04:05:39,894 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 04:05:39,898 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 04:05:39,899 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 04:05:39,902 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 04:05:39,906 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 04:05:39,913 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 04:05:39,913 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 04:05:39,914 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 04:05:39,914 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 04:05:39,915 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 04:05:39,930 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 04:05:39,930 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 04:05:39,931 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 04:05:39,931 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 04:05:39,931 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 04:05:39,931 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 04:05:39,934 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 04:05:39,934 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 04:05:39,934 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 04:05:39,934 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 04:05:39,934 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 04:05:39,935 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 04:05:39,935 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 04:05:39,936 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 04:05:39,936 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 04:05:39,936 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 04:05:39,936 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 04:05:39,936 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 04:05:39,936 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 04:05:39,938 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 04:05:39,939 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 04:05:39,939 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 04:05:39,939 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 04:05:39,939 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 04:05:39,939 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 04:05:39,940 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 04:05:39,940 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 04:05:39,940 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 04:05:39,941 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 04:05:39,941 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 04:05:39,941 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 04:05:39,941 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 04:05:39,941 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 04:05:39,942 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 04:05:39,992 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 04:05:40,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 04:05:40,013 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 04:05:40,014 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 04:05:40,015 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 04:05:40,016 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c [2018-11-07 04:05:40,076 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ab473cfa/fdca589e946b44098ddb4bb3ffd311b7/FLAG9ffb94c7c [2018-11-07 04:05:40,771 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 04:05:40,772 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label26_true-unreach-call.c [2018-11-07 04:05:40,802 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ab473cfa/fdca589e946b44098ddb4bb3ffd311b7/FLAG9ffb94c7c [2018-11-07 04:05:40,820 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ab473cfa/fdca589e946b44098ddb4bb3ffd311b7 [2018-11-07 04:05:40,835 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 04:05:40,837 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 04:05:40,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 04:05:40,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 04:05:40,843 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 04:05:40,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:05:40" (1/1) ... [2018-11-07 04:05:40,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7de4c151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:40, skipping insertion in model container [2018-11-07 04:05:40,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:05:40" (1/1) ... [2018-11-07 04:05:40,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 04:05:41,009 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 04:05:42,088 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:05:42,094 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 04:05:42,581 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 04:05:42,611 INFO L193 MainTranslator]: Completed translation [2018-11-07 04:05:42,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:42 WrapperNode [2018-11-07 04:05:42,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 04:05:42,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 04:05:42,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 04:05:42,613 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 04:05:42,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:42" (1/1) ... [2018-11-07 04:05:42,901 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:42" (1/1) ... [2018-11-07 04:05:42,912 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 04:05:42,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 04:05:42,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 04:05:42,913 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 04:05:42,925 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:42" (1/1) ... [2018-11-07 04:05:42,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:42" (1/1) ... [2018-11-07 04:05:42,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:42" (1/1) ... [2018-11-07 04:05:42,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:42" (1/1) ... [2018-11-07 04:05:43,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:42" (1/1) ... [2018-11-07 04:05:43,106 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:42" (1/1) ... [2018-11-07 04:05:43,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:42" (1/1) ... [2018-11-07 04:05:43,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 04:05:43,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 04:05:43,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 04:05:43,176 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 04:05:43,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 04:05:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 04:05:43,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 04:05:43,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 04:05:43,248 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 04:05:43,249 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 04:05:43,249 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 04:05:43,249 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 04:05:43,249 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 04:05:43,250 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 04:05:43,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 04:05:43,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 04:05:43,250 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 04:05:43,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 04:05:51,153 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 04:05:51,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:05:51 BoogieIcfgContainer [2018-11-07 04:05:51,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 04:05:51,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 04:05:51,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 04:05:51,159 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 04:05:51,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:05:40" (1/3) ... [2018-11-07 04:05:51,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3679af70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:05:51, skipping insertion in model container [2018-11-07 04:05:51,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:05:42" (2/3) ... [2018-11-07 04:05:51,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3679af70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:05:51, skipping insertion in model container [2018-11-07 04:05:51,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:05:51" (3/3) ... [2018-11-07 04:05:51,163 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label26_true-unreach-call.c [2018-11-07 04:05:51,174 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 04:05:51,184 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 04:05:51,204 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 04:05:51,251 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 04:05:51,251 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 04:05:51,251 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 04:05:51,252 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 04:05:51,252 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 04:05:51,252 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 04:05:51,252 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 04:05:51,252 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 04:05:51,295 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 04:05:51,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-07 04:05:51,307 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:05:51,308 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] [2018-11-07 04:05:51,311 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:05:51,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:05:51,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1427857313, now seen corresponding path program 1 times [2018-11-07 04:05:51,320 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:05:51,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:05:51,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:05:51,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:05:51,372 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:05:51,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:05:51,840 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:05:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:05:51,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:05:51,963 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 04:05:51,963 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:05:51,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 04:05:51,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 04:05:51,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 04:05:51,997 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 04:05:59,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:05:59,164 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 04:05:59,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 04:05:59,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-11-07 04:05:59,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:05:59,220 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 04:05:59,222 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 04:05:59,238 INFO L604 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 [2018-11-07 04:05:59,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 04:05:59,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 04:05:59,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 04:05:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2801 transitions. [2018-11-07 04:05:59,401 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2801 transitions. Word has length 69 [2018-11-07 04:05:59,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:05:59,402 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2801 transitions. [2018-11-07 04:05:59,402 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 04:05:59,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2801 transitions. [2018-11-07 04:05:59,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 04:05:59,418 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:05:59,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:05:59,419 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:05:59,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:05:59,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1828983656, now seen corresponding path program 1 times [2018-11-07 04:05:59,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:05:59,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:05:59,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:05:59,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:05:59,423 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:05:59,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:05:59,831 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:05:59,909 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:05:59,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:05:59,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 04:05:59,910 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:05:59,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 04:05:59,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 04:05:59,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 04:05:59,913 INFO L87 Difference]: Start difference. First operand 1474 states and 2801 transitions. Second operand 6 states. [2018-11-07 04:06:09,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:06:09,270 INFO L93 Difference]: Finished difference Result 4422 states and 8490 transitions. [2018-11-07 04:06:09,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:06:09,274 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-11-07 04:06:09,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:06:09,298 INFO L225 Difference]: With dead ends: 4422 [2018-11-07 04:06:09,298 INFO L226 Difference]: Without dead ends: 2954 [2018-11-07 04:06:09,304 INFO L604 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 [2018-11-07 04:06:09,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-11-07 04:06:09,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2928. [2018-11-07 04:06:09,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-11-07 04:06:09,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5031 transitions. [2018-11-07 04:06:09,419 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5031 transitions. Word has length 143 [2018-11-07 04:06:09,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:06:09,420 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5031 transitions. [2018-11-07 04:06:09,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:06:09,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5031 transitions. [2018-11-07 04:06:09,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 04:06:09,424 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:06:09,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:06:09,424 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:06:09,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:06:09,425 INFO L82 PathProgramCache]: Analyzing trace with hash -867833311, now seen corresponding path program 1 times [2018-11-07 04:06:09,425 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:06:09,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:06:09,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:06:09,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:06:09,426 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:06:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:06:09,665 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:06:09,665 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:06:09,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 04:06:09,665 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:06:09,666 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 04:06:09,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 04:06:09,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 04:06:09,667 INFO L87 Difference]: Start difference. First operand 2928 states and 5031 transitions. Second operand 5 states. [2018-11-07 04:06:19,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:06:19,278 INFO L93 Difference]: Finished difference Result 10268 states and 17658 transitions. [2018-11-07 04:06:19,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 04:06:19,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-11-07 04:06:19,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:06:19,332 INFO L225 Difference]: With dead ends: 10268 [2018-11-07 04:06:19,333 INFO L226 Difference]: Without dead ends: 7346 [2018-11-07 04:06:19,352 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 04:06:19,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7346 states. [2018-11-07 04:06:19,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7346 to 7268. [2018-11-07 04:06:19,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7268 states. [2018-11-07 04:06:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7268 states to 7268 states and 10819 transitions. [2018-11-07 04:06:19,608 INFO L78 Accepts]: Start accepts. Automaton has 7268 states and 10819 transitions. Word has length 146 [2018-11-07 04:06:19,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:06:19,609 INFO L480 AbstractCegarLoop]: Abstraction has 7268 states and 10819 transitions. [2018-11-07 04:06:19,609 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 04:06:19,609 INFO L276 IsEmpty]: Start isEmpty. Operand 7268 states and 10819 transitions. [2018-11-07 04:06:19,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-07 04:06:19,613 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:06:19,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:06:19,618 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:06:19,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:06:19,618 INFO L82 PathProgramCache]: Analyzing trace with hash -317879939, now seen corresponding path program 1 times [2018-11-07 04:06:19,618 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:06:19,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:06:19,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:06:19,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:06:19,620 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:06:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:06:19,817 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:06:19,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:06:19,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 04:06:19,818 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:06:19,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 04:06:19,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 04:06:19,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 04:06:19,819 INFO L87 Difference]: Start difference. First operand 7268 states and 10819 transitions. Second operand 4 states. [2018-11-07 04:06:27,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:06:27,178 INFO L93 Difference]: Finished difference Result 25196 states and 39361 transitions. [2018-11-07 04:06:27,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 04:06:27,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2018-11-07 04:06:27,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:06:27,266 INFO L225 Difference]: With dead ends: 25196 [2018-11-07 04:06:27,266 INFO L226 Difference]: Without dead ends: 17934 [2018-11-07 04:06:27,316 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 04:06:27,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17934 states. [2018-11-07 04:06:27,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17934 to 17929. [2018-11-07 04:06:27,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17929 states. [2018-11-07 04:06:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17929 states to 17929 states and 25578 transitions. [2018-11-07 04:06:27,761 INFO L78 Accepts]: Start accepts. Automaton has 17929 states and 25578 transitions. Word has length 176 [2018-11-07 04:06:27,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:06:27,762 INFO L480 AbstractCegarLoop]: Abstraction has 17929 states and 25578 transitions. [2018-11-07 04:06:27,762 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 04:06:27,762 INFO L276 IsEmpty]: Start isEmpty. Operand 17929 states and 25578 transitions. [2018-11-07 04:06:27,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-11-07 04:06:27,792 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:06:27,793 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, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:06:27,793 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:06:27,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:06:27,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1232784131, now seen corresponding path program 1 times [2018-11-07 04:06:27,793 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:06:27,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:06:27,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:06:27,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:06:27,795 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:06:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:06:28,158 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:06:28,880 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 192 proven. 267 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 04:06:28,881 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:06:28,881 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:06:28,882 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 369 with the following transitions: [2018-11-07 04:06:28,884 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], [2075], [2077], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2196], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2228], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 04:06:28,963 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:06:28,963 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:06:31,232 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 04:06:31,920 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 04:06:31,921 INFO L272 AbstractInterpreter]: Visited 117 different actions 117 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 04:06:31,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:06:31,934 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 04:06:34,887 INFO L227 lantSequenceWeakener]: Weakened 357 states. On average, predicates are now at 77.99% of their original sizes. [2018-11-07 04:06:34,888 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 04:06:35,307 INFO L415 sIntCurrentIteration]: We unified 367 AI predicates to 367 [2018-11-07 04:06:35,307 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 04:06:35,308 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:06:35,309 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2018-11-07 04:06:35,309 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:06:35,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 04:06:35,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 04:06:35,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 04:06:35,310 INFO L87 Difference]: Start difference. First operand 17929 states and 25578 transitions. Second operand 7 states. [2018-11-07 04:07:39,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:07:39,634 INFO L93 Difference]: Finished difference Result 36557 states and 51911 transitions. [2018-11-07 04:07:39,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 04:07:39,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 368 [2018-11-07 04:07:39,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:07:39,691 INFO L225 Difference]: With dead ends: 36557 [2018-11-07 04:07:39,692 INFO L226 Difference]: Without dead ends: 18634 [2018-11-07 04:07:39,731 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 368 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 04:07:39,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18634 states. [2018-11-07 04:07:40,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18634 to 18632. [2018-11-07 04:07:40,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18632 states. [2018-11-07 04:07:40,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18632 states to 18632 states and 26293 transitions. [2018-11-07 04:07:40,080 INFO L78 Accepts]: Start accepts. Automaton has 18632 states and 26293 transitions. Word has length 368 [2018-11-07 04:07:40,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:07:40,080 INFO L480 AbstractCegarLoop]: Abstraction has 18632 states and 26293 transitions. [2018-11-07 04:07:40,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 04:07:40,080 INFO L276 IsEmpty]: Start isEmpty. Operand 18632 states and 26293 transitions. [2018-11-07 04:07:40,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 556 [2018-11-07 04:07:40,116 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:07:40,117 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:07:40,117 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:07:40,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:07:40,118 INFO L82 PathProgramCache]: Analyzing trace with hash -685972603, now seen corresponding path program 1 times [2018-11-07 04:07:40,118 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:07:40,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:07:40,119 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:07:40,119 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:07:40,119 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:07:40,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:07:40,636 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 04:07:40,835 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 04:07:41,071 WARN L179 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 04:07:41,447 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 04:07:41,887 INFO L134 CoverageAnalysis]: Checked inductivity of 825 backedges. 312 proven. 413 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2018-11-07 04:07:41,887 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:07:41,887 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:07:41,888 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 556 with the following transitions: [2018-11-07 04:07:41,888 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], [2075], [2077], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2196], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2228], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2280], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [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], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 04:07:41,897 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:07:41,898 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:07:44,309 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 04:07:55,975 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 04:07:55,975 INFO L272 AbstractInterpreter]: Visited 197 different actions 388 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 04:07:55,993 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:07:55,993 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 04:08:01,053 INFO L227 lantSequenceWeakener]: Weakened 341 states. On average, predicates are now at 78.09% of their original sizes. [2018-11-07 04:08:01,054 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 04:08:06,612 INFO L415 sIntCurrentIteration]: We unified 554 AI predicates to 554 [2018-11-07 04:08:06,613 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 04:08:06,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:08:06,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [11] total 27 [2018-11-07 04:08:06,613 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:08:06,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 04:08:06,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 04:08:06,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2018-11-07 04:08:06,615 INFO L87 Difference]: Start difference. First operand 18632 states and 26293 transitions. Second operand 18 states. Received shutdown request... [2018-11-07 04:09:29,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 04:09:29,314 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 04:09:29,319 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 04:09:29,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:09:29 BoogieIcfgContainer [2018-11-07 04:09:29,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 04:09:29,320 INFO L168 Benchmark]: Toolchain (without parser) took 228484.37 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 3.8 GB in the end (delta: -2.4 GB). Peak memory consumption was 281.1 MB. Max. memory is 7.1 GB. [2018-11-07 04:09:29,322 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. [2018-11-07 04:09:29,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1773.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-11-07 04:09:29,323 INFO L168 Benchmark]: Boogie Procedure Inliner took 299.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -959.4 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 04:09:29,324 INFO L168 Benchmark]: Boogie Preprocessor took 262.52 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-11-07 04:09:29,327 INFO L168 Benchmark]: RCFGBuilder took 7978.70 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: 510.6 MB). Peak memory consumption was 510.6 MB. Max. memory is 7.1 GB. [2018-11-07 04:09:29,328 INFO L168 Benchmark]: TraceAbstraction took 218164.78 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.8 GB in the end (delta: -2.1 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 04:09:29,335 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 1773.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 299.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -959.4 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 262.52 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7978.70 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: 510.6 MB). Peak memory consumption was 510.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 218164.78 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.8 GB in the end (delta: -2.1 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 195]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 195). Cancelled while BasicCegarLoop was constructing difference of abstraction (18632states) and FLOYD_HOARE automaton (currently 15 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (614 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 218.0s OverallTime, 6 OverallIterations, 5 TraceHistogramMax, 180.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1522 SDtfs, 10487 SDslu, 657 SDs, 0 SdLazy, 17864 SolverSat, 5387 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 101.1s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 955 GetRequests, 910 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 6.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18632occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 17.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.996884294009347 AbsIntWeakeningRatio, 0.07600434310532031 AbsIntAvgWeakeningVarsNumRemoved, 381.43648208469057 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 111 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 1457 NumberOfCodeBlocks, 1457 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1451 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582073 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 795/1475 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown