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-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:20:12,161 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:20:12,163 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:20:12,174 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:20:12,175 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:20:12,176 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:20:12,177 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:20:12,179 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:20:12,180 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:20:12,181 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:20:12,182 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:20:12,182 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:20:12,183 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:20:12,184 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:20:12,185 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:20:12,186 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:20:12,187 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:20:12,189 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:20:12,191 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:20:12,195 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:20:12,196 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:20:12,199 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:20:12,205 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 21:20:12,217 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:20:12,217 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:20:12,218 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:20:12,220 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:20:12,221 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 21:20:12,243 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:20:12,243 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:20:12,244 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:20:12,244 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:20:12,244 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:20:12,245 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:20:12,245 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:20:12,245 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:20:12,245 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:20:12,245 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:20:12,246 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:20:12,246 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:20:12,246 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:20:12,247 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:20:12,247 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:20:12,247 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:20:12,247 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:20:12,248 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:20:12,248 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:20:12,248 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:20:12,248 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:20:12,248 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:20:12,248 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:20:12,249 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:20:12,249 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:20:12,249 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:20:12,249 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:20:12,249 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:20:12,250 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:20:12,250 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:20:12,250 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:20:12,250 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:20:12,250 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:20:12,251 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:20:12,251 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:20:12,309 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:20:12,323 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:20:12,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:20:12,329 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:20:12,330 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:20:12,331 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label15_true-unreach-call.c [2018-11-07 21:20:12,399 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bdc2a73a/3a45bc616ed64750b48a81eb792553db/FLAG91e29b37f [2018-11-07 21:20:13,326 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:20:13,327 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label15_true-unreach-call.c [2018-11-07 21:20:13,377 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bdc2a73a/3a45bc616ed64750b48a81eb792553db/FLAG91e29b37f [2018-11-07 21:20:13,393 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bdc2a73a/3a45bc616ed64750b48a81eb792553db [2018-11-07 21:20:13,404 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:20:13,406 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:20:13,407 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:20:13,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:20:13,412 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:20:13,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:20:13" (1/1) ... [2018-11-07 21:20:13,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53c7ef73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:13, skipping insertion in model container [2018-11-07 21:20:13,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:20:13" (1/1) ... [2018-11-07 21:20:13,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:20:13,673 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:20:15,644 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:20:15,650 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:20:16,768 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:20:16,829 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:20:16,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:16 WrapperNode [2018-11-07 21:20:16,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:20:16,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:20:16,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:20:16,832 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:20:16,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:16" (1/1) ... [2018-11-07 21:20:17,361 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:16" (1/1) ... [2018-11-07 21:20:17,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:20:17,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:20:17,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:20:17,373 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:20:17,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:16" (1/1) ... [2018-11-07 21:20:17,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:16" (1/1) ... [2018-11-07 21:20:17,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:16" (1/1) ... [2018-11-07 21:20:17,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:16" (1/1) ... [2018-11-07 21:20:17,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:16" (1/1) ... [2018-11-07 21:20:17,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:16" (1/1) ... [2018-11-07 21:20:17,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:16" (1/1) ... [2018-11-07 21:20:17,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:20:17,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:20:17,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:20:17,791 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:20:17,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:16" (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 21:20:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:20:17,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:20:17,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:20:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 21:20:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 21:20:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 21:20:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 21:20:17,859 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 21:20:17,859 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 21:20:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 21:20:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 21:20:17,860 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:20:17,860 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:20:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:20:17,861 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:20:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:20:17,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:20:17,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:20:17,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:20:34,064 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:20:34,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:20:34 BoogieIcfgContainer [2018-11-07 21:20:34,065 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:20:34,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:20:34,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:20:34,070 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:20:34,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:20:13" (1/3) ... [2018-11-07 21:20:34,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611d5492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:20:34, skipping insertion in model container [2018-11-07 21:20:34,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:20:16" (2/3) ... [2018-11-07 21:20:34,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611d5492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:20:34, skipping insertion in model container [2018-11-07 21:20:34,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:20:34" (3/3) ... [2018-11-07 21:20:34,074 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label15_true-unreach-call.c [2018-11-07 21:20:34,085 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:20:34,094 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:20:34,110 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:20:34,168 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:20:34,168 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:20:34,168 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:20:34,168 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:20:34,169 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:20:34,169 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:20:34,169 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:20:34,169 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:20:34,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 21:20:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-07 21:20:34,246 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:20:34,248 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] [2018-11-07 21:20:34,250 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:20:34,255 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:20:34,256 INFO L82 PathProgramCache]: Analyzing trace with hash -145550206, now seen corresponding path program 1 times [2018-11-07 21:20:34,258 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:20:34,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:20:34,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:20:34,314 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:20:34,314 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:20:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:20:34,813 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-07 21:20:34,831 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 21:20:34,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:20:34,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:20:34,834 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:20:34,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:20:34,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:20:34,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:20:34,861 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-11-07 21:20:56,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:20:56,585 INFO L93 Difference]: Finished difference Result 6513 states and 12383 transitions. [2018-11-07 21:20:56,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:20:56,587 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2018-11-07 21:20:56,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:20:56,638 INFO L225 Difference]: With dead ends: 6513 [2018-11-07 21:20:56,639 INFO L226 Difference]: Without dead ends: 4729 [2018-11-07 21:20:56,652 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:20:56,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2018-11-07 21:20:56,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4693. [2018-11-07 21:20:56,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2018-11-07 21:20:56,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7735 transitions. [2018-11-07 21:20:56,897 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7735 transitions. Word has length 65 [2018-11-07 21:20:56,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:20:56,898 INFO L480 AbstractCegarLoop]: Abstraction has 4693 states and 7735 transitions. [2018-11-07 21:20:56,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:20:56,898 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7735 transitions. [2018-11-07 21:20:56,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-07 21:20:56,913 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:20:56,914 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, 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 21:20:56,914 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:20:56,914 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:20:56,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1956104820, now seen corresponding path program 1 times [2018-11-07 21:20:56,915 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:20:56,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:20:56,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:20:56,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:20:56,917 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:20:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:20:57,299 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:20:57,698 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:20:57,698 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:20:57,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:20:57,698 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:20:57,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:20:57,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:20:57,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:20:57,701 INFO L87 Difference]: Start difference. First operand 4693 states and 7735 transitions. Second operand 6 states. [2018-11-07 21:21:22,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:21:22,880 INFO L93 Difference]: Finished difference Result 17886 states and 30173 transitions. [2018-11-07 21:21:22,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:21:22,881 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2018-11-07 21:21:22,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:21:22,954 INFO L225 Difference]: With dead ends: 17886 [2018-11-07 21:21:22,954 INFO L226 Difference]: Without dead ends: 13199 [2018-11-07 21:21:22,973 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:21:22,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13199 states. [2018-11-07 21:21:23,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13199 to 13130. [2018-11-07 21:21:23,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13130 states. [2018-11-07 21:21:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13130 states to 13130 states and 19368 transitions. [2018-11-07 21:21:23,327 INFO L78 Accepts]: Start accepts. Automaton has 13130 states and 19368 transitions. Word has length 137 [2018-11-07 21:21:23,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:21:23,327 INFO L480 AbstractCegarLoop]: Abstraction has 13130 states and 19368 transitions. [2018-11-07 21:21:23,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:21:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand 13130 states and 19368 transitions. [2018-11-07 21:21:23,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 21:21:23,343 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:21:23,344 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:23,344 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:21:23,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:21:23,345 INFO L82 PathProgramCache]: Analyzing trace with hash -749519922, now seen corresponding path program 1 times [2018-11-07 21:21:23,345 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:21:23,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:23,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:21:23,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:23,346 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:21:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:21:23,710 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:21:23,710 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:21:23,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:21:23,711 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:21:23,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:21:23,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:21:23,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:21:23,712 INFO L87 Difference]: Start difference. First operand 13130 states and 19368 transitions. Second operand 6 states. [2018-11-07 21:21:39,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:21:39,739 INFO L93 Difference]: Finished difference Result 39915 states and 60263 transitions. [2018-11-07 21:21:39,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 21:21:39,740 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-11-07 21:21:39,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:21:39,856 INFO L225 Difference]: With dead ends: 39915 [2018-11-07 21:21:39,856 INFO L226 Difference]: Without dead ends: 26791 [2018-11-07 21:21:39,894 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 21:21:39,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26791 states. [2018-11-07 21:21:40,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26791 to 26535. [2018-11-07 21:21:40,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26535 states. [2018-11-07 21:21:40,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26535 states to 26535 states and 38629 transitions. [2018-11-07 21:21:40,489 INFO L78 Accepts]: Start accepts. Automaton has 26535 states and 38629 transitions. Word has length 147 [2018-11-07 21:21:40,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:21:40,490 INFO L480 AbstractCegarLoop]: Abstraction has 26535 states and 38629 transitions. [2018-11-07 21:21:40,490 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:21:40,490 INFO L276 IsEmpty]: Start isEmpty. Operand 26535 states and 38629 transitions. [2018-11-07 21:21:40,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-11-07 21:21:40,494 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:21:40,495 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:40,495 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:21:40,495 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:21:40,496 INFO L82 PathProgramCache]: Analyzing trace with hash -177824352, now seen corresponding path program 1 times [2018-11-07 21:21:40,496 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:21:40,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:40,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:21:40,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:21:40,497 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:21:40,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:21:40,783 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:21:41,208 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:21:41,209 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:21:41,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:21:41,209 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:21:41,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:21:41,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:21:41,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:21:41,210 INFO L87 Difference]: Start difference. First operand 26535 states and 38629 transitions. Second operand 6 states. [2018-11-07 21:22:00,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:22:00,694 INFO L93 Difference]: Finished difference Result 70533 states and 106687 transitions. [2018-11-07 21:22:00,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:22:00,698 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2018-11-07 21:22:00,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:22:00,826 INFO L225 Difference]: With dead ends: 70533 [2018-11-07 21:22:00,827 INFO L226 Difference]: Without dead ends: 44004 [2018-11-07 21:22:00,884 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:22:00,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44004 states. [2018-11-07 21:22:01,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44004 to 43853. [2018-11-07 21:22:01,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43853 states. [2018-11-07 21:22:01,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43853 states to 43853 states and 61086 transitions. [2018-11-07 21:22:01,666 INFO L78 Accepts]: Start accepts. Automaton has 43853 states and 61086 transitions. Word has length 180 [2018-11-07 21:22:01,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:22:01,667 INFO L480 AbstractCegarLoop]: Abstraction has 43853 states and 61086 transitions. [2018-11-07 21:22:01,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:22:01,667 INFO L276 IsEmpty]: Start isEmpty. Operand 43853 states and 61086 transitions. [2018-11-07 21:22:01,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-11-07 21:22:01,678 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:22:01,678 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:22:01,679 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:22:01,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:22:01,679 INFO L82 PathProgramCache]: Analyzing trace with hash 1490211056, now seen corresponding path program 1 times [2018-11-07 21:22:01,679 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:22:01,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:22:01,681 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:22:01,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:22:01,681 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:22:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:22:01,967 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:22:02,404 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 174 proven. 134 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-11-07 21:22:02,405 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:22:02,405 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:22:02,407 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 291 with the following transitions: [2018-11-07 21:22:02,410 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5618], [5626], [5634], [5642], [5646], [5648], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5749], [5750], [5754], [5758], [5762], [5766], [5769], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 21:22:02,488 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:22:02,489 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:22:02,936 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:22:02,939 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 21:22:02,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:22:02,982 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:22:03,567 INFO L227 lantSequenceWeakener]: Weakened 276 states. On average, predicates are now at 75.66% of their original sizes. [2018-11-07 21:22:03,567 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:22:03,946 INFO L415 sIntCurrentIteration]: We unified 289 AI predicates to 289 [2018-11-07 21:22:03,947 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:22:03,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:22:03,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 21:22:03,948 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:22:03,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:22:03,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:22:03,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:22:03,949 INFO L87 Difference]: Start difference. First operand 43853 states and 61086 transitions. Second operand 7 states. [2018-11-07 21:22:09,890 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:23:24,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:23:24,142 INFO L93 Difference]: Finished difference Result 89092 states and 123882 transitions. [2018-11-07 21:23:24,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:23:24,142 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2018-11-07 21:23:24,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:23:24,252 INFO L225 Difference]: With dead ends: 89092 [2018-11-07 21:23:24,252 INFO L226 Difference]: Without dead ends: 45245 [2018-11-07 21:23:24,302 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 290 GetRequests, 284 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 21:23:24,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45245 states. [2018-11-07 21:23:24,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45245 to 45243. [2018-11-07 21:23:24,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45243 states. [2018-11-07 21:23:25,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45243 states to 45243 states and 62492 transitions. [2018-11-07 21:23:25,023 INFO L78 Accepts]: Start accepts. Automaton has 45243 states and 62492 transitions. Word has length 290 [2018-11-07 21:23:25,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:23:25,023 INFO L480 AbstractCegarLoop]: Abstraction has 45243 states and 62492 transitions. [2018-11-07 21:23:25,023 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 21:23:25,032 INFO L276 IsEmpty]: Start isEmpty. Operand 45243 states and 62492 transitions. [2018-11-07 21:23:25,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-11-07 21:23:25,048 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:23:25,049 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:23:25,049 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:23:25,050 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:23:25,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1591863400, now seen corresponding path program 1 times [2018-11-07 21:23:25,050 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:23:25,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:23:25,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:23:25,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:23:25,052 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:23:25,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:23:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 388 backedges. 180 proven. 136 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-07 21:23:26,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:23:26,527 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:23:26,527 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 452 with the following transitions: [2018-11-07 21:23:26,528 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5610], [5618], [5626], [5634], [5642], [5646], [5648], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5749], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6421], [6425], [6429], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6560], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 21:23:26,547 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:23:26,547 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:23:27,252 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:23:27,253 INFO L272 AbstractInterpreter]: Visited 249 different actions 491 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 21:23:27,291 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:23:27,292 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:23:28,276 INFO L227 lantSequenceWeakener]: Weakened 121 states. On average, predicates are now at 76.14% of their original sizes. [2018-11-07 21:23:28,276 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:23:29,812 INFO L415 sIntCurrentIteration]: We unified 450 AI predicates to 450 [2018-11-07 21:23:29,812 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:23:29,812 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:23:29,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [29] imperfect sequences [6] total 33 [2018-11-07 21:23:29,813 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:23:29,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-11-07 21:23:29,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-11-07 21:23:29,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=612, Unknown=0, NotChecked=0, Total=812 [2018-11-07 21:23:29,816 INFO L87 Difference]: Start difference. First operand 45243 states and 62492 transitions. Second operand 29 states. Received shutdown request... [2018-11-07 21:23:33,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 21:23:33,186 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:23:33,191 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:23:33,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:23:33 BoogieIcfgContainer [2018-11-07 21:23:33,191 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:23:33,192 INFO L168 Benchmark]: Toolchain (without parser) took 199787.26 ms. Allocated memory was 1.5 GB in the beginning and 5.8 GB in the end (delta: 4.3 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-07 21:23:33,194 INFO L168 Benchmark]: CDTParser took 0.23 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 21:23:33,194 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3422.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 394.6 MB). Peak memory consumption was 394.6 MB. Max. memory is 7.1 GB. [2018-11-07 21:23:33,195 INFO L168 Benchmark]: Boogie Procedure Inliner took 542.11 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.2 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-07 21:23:33,196 INFO L168 Benchmark]: Boogie Preprocessor took 417.14 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. [2018-11-07 21:23:33,197 INFO L168 Benchmark]: RCFGBuilder took 16274.77 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 136.3 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 541.3 MB). Peak memory consumption was 677.6 MB. Max. memory is 7.1 GB. [2018-11-07 21:23:33,198 INFO L168 Benchmark]: TraceAbstraction took 179125.36 ms. Allocated memory was 2.5 GB in the beginning and 5.8 GB in the end (delta: 3.3 GB). Free memory was 1.7 GB in the beginning and 3.7 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 21:23:33,204 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 3422.79 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 394.6 MB). Peak memory consumption was 394.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 542.11 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.2 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 417.14 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16274.77 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 136.3 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 541.3 MB). Peak memory consumption was 677.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 179125.36 ms. Allocated memory was 2.5 GB in the beginning and 5.8 GB in the end (delta: 3.3 GB). Free memory was 1.7 GB in the beginning and 3.7 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 190]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 190). Cancelled while BasicCegarLoop was constructing difference of abstraction (45243states) and FLOYD_HOARE automaton (currently 9 states, 29 states before enhancement),while ReachableStatesComputation was computing reachable states (117 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 179.0s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 166.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4956 SDtfs, 29757 SDslu, 3699 SDs, 0 SdLazy, 47129 SolverSat, 9851 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 104.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 782 GetRequests, 718 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 353 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45243occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9979440935209598 AbsIntWeakeningRatio, 0.09201623815967523 AbsIntAvgWeakeningVarsNumRemoved, 10.790257104194858 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 514 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1270 NumberOfCodeBlocks, 1270 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1264 ConstructedInterpolants, 0 QuantifiedInterpolants, 1005379 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 680/950 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown