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/Problem13_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 18:56:29,050 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 18:56:29,052 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 18:56:29,064 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 18:56:29,064 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 18:56:29,065 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 18:56:29,067 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 18:56:29,069 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 18:56:29,070 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 18:56:29,071 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 18:56:29,072 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 18:56:29,073 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 18:56:29,073 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 18:56:29,074 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 18:56:29,076 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 18:56:29,076 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 18:56:29,077 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 18:56:29,079 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 18:56:29,081 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 18:56:29,083 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 18:56:29,084 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 18:56:29,086 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 18:56:29,088 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 18:56:29,088 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 18:56:29,089 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 18:56:29,090 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 18:56:29,091 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 18:56:29,091 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 18:56:29,094 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 18:56:29,098 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 18:56:29,098 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 18:56:29,099 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 18:56:29,099 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 18:56:29,099 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 18:56:29,100 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 18:56:29,103 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 18:56:29,103 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 [2018-11-12 18:56:29,131 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 18:56:29,131 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 18:56:29,132 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 18:56:29,132 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 18:56:29,132 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 18:56:29,132 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 18:56:29,133 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 18:56:29,133 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 18:56:29,133 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 18:56:29,133 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 18:56:29,133 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 18:56:29,134 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 18:56:29,134 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 18:56:29,134 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 18:56:29,135 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 18:56:29,135 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 18:56:29,135 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 18:56:29,135 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 18:56:29,135 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 18:56:29,136 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 18:56:29,136 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 18:56:29,136 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 18:56:29,136 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 18:56:29,136 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 18:56:29,137 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 18:56:29,137 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:56:29,137 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 18:56:29,137 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 18:56:29,137 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 18:56:29,138 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 18:56:29,138 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 18:56:29,138 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 18:56:29,138 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 18:56:29,138 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 18:56:29,139 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 18:56:29,190 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 18:56:29,207 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 18:56:29,212 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 18:56:29,214 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 18:56:29,214 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 18:56:29,215 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label18_true-unreach-call.c [2018-11-12 18:56:29,274 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e346ab066/2c570bc6749b4827b48a12194955e5a7/FLAG438774951 [2018-11-12 18:56:30,122 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 18:56:30,123 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label18_true-unreach-call.c [2018-11-12 18:56:30,155 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e346ab066/2c570bc6749b4827b48a12194955e5a7/FLAG438774951 [2018-11-12 18:56:30,172 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e346ab066/2c570bc6749b4827b48a12194955e5a7 [2018-11-12 18:56:30,184 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 18:56:30,186 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 18:56:30,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 18:56:30,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 18:56:30,191 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 18:56:30,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:56:30" (1/1) ... [2018-11-12 18:56:30,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9994d47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:56:30, skipping insertion in model container [2018-11-12 18:56:30,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:56:30" (1/1) ... [2018-11-12 18:56:30,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 18:56:30,383 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 18:56:31,806 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:56:31,811 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 18:56:32,613 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:56:32,654 INFO L193 MainTranslator]: Completed translation [2018-11-12 18:56:32,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:56:32 WrapperNode [2018-11-12 18:56:32,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 18:56:32,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 18:56:32,656 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 18:56:32,657 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 18:56:32,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:56:32" (1/1) ... [2018-11-12 18:56:33,037 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:56:32" (1/1) ... [2018-11-12 18:56:33,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 18:56:33,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 18:56:33,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 18:56:33,049 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 18:56:33,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:56:32" (1/1) ... [2018-11-12 18:56:33,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:56:32" (1/1) ... [2018-11-12 18:56:33,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:56:32" (1/1) ... [2018-11-12 18:56:33,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:56:32" (1/1) ... [2018-11-12 18:56:33,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:56:32" (1/1) ... [2018-11-12 18:56:33,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:56:32" (1/1) ... [2018-11-12 18:56:33,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:56:32" (1/1) ... [2018-11-12 18:56:33,339 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 18:56:33,340 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 18:56:33,340 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 18:56:33,340 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 18:56:33,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:56:32" (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 [2018-11-12 18:56:33,412 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 18:56:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 18:56:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 18:56:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 18:56:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 18:56:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 18:56:33,414 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 18:56:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 18:56:33,414 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 18:56:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 18:56:33,415 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 18:56:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 18:56:33,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 18:56:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 18:56:33,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 18:56:44,510 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 18:56:44,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:56:44 BoogieIcfgContainer [2018-11-12 18:56:44,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 18:56:44,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 18:56:44,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 18:56:44,515 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 18:56:44,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:56:30" (1/3) ... [2018-11-12 18:56:44,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ab5935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:56:44, skipping insertion in model container [2018-11-12 18:56:44,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:56:32" (2/3) ... [2018-11-12 18:56:44,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20ab5935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:56:44, skipping insertion in model container [2018-11-12 18:56:44,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:56:44" (3/3) ... [2018-11-12 18:56:44,519 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label18_true-unreach-call.c [2018-11-12 18:56:44,529 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 18:56:44,539 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 18:56:44,557 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 18:56:44,604 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 18:56:44,605 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 18:56:44,605 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 18:56:44,605 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 18:56:44,605 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 18:56:44,605 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 18:56:44,606 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 18:56:44,606 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 18:56:44,650 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-12 18:56:44,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-12 18:56:44,660 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:56:44,662 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:56:44,664 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:56:44,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:56:44,671 INFO L82 PathProgramCache]: Analyzing trace with hash -856257052, now seen corresponding path program 1 times [2018-11-12 18:56:44,674 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:56:44,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:56:44,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:56:44,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:56:44,729 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:56:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:56:45,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:56:45,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:56:45,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 18:56:45,259 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:56:45,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:56:45,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:56:45,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:56:45,285 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-12 18:56:53,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:56:53,980 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-11-12 18:56:53,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:56:53,983 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-11-12 18:56:53,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:56:54,019 INFO L225 Difference]: With dead ends: 3097 [2018-11-12 18:56:54,020 INFO L226 Difference]: Without dead ends: 1975 [2018-11-12 18:56:54,031 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 [2018-11-12 18:56:54,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-11-12 18:56:54,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-11-12 18:56:54,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-11-12 18:56:54,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-11-12 18:56:54,197 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 70 [2018-11-12 18:56:54,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:56:54,198 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-11-12 18:56:54,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:56:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-11-12 18:56:54,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-12 18:56:54,215 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:56:54,216 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 18:56:54,216 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:56:54,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:56:54,217 INFO L82 PathProgramCache]: Analyzing trace with hash -410471564, now seen corresponding path program 1 times [2018-11-12 18:56:54,217 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:56:54,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:56:54,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:56:54,219 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:56:54,219 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:56:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:56:54,456 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:56:54,456 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:56:54,456 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 18:56:54,457 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:56:54,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 18:56:54,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 18:56:54,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 18:56:54,460 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-11-12 18:57:10,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:57:10,821 INFO L93 Difference]: Finished difference Result 5733 states and 9688 transitions. [2018-11-12 18:57:10,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 18:57:10,822 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-11-12 18:57:10,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:57:10,853 INFO L225 Difference]: With dead ends: 5733 [2018-11-12 18:57:10,853 INFO L226 Difference]: Without dead ends: 3765 [2018-11-12 18:57:10,861 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 18:57:10,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2018-11-12 18:57:10,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3682. [2018-11-12 18:57:10,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3682 states. [2018-11-12 18:57:10,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 5656 transitions. [2018-11-12 18:57:10,998 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 5656 transitions. Word has length 146 [2018-11-12 18:57:10,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:57:10,998 INFO L480 AbstractCegarLoop]: Abstraction has 3682 states and 5656 transitions. [2018-11-12 18:57:10,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 18:57:10,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 5656 transitions. [2018-11-12 18:57:11,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-11-12 18:57:11,004 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:57:11,005 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:57:11,005 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:57:11,005 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:57:11,005 INFO L82 PathProgramCache]: Analyzing trace with hash 586688088, now seen corresponding path program 1 times [2018-11-12 18:57:11,005 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:57:11,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:57:11,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:57:11,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:57:11,007 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:57:11,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:57:11,267 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:57:11,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:57:11,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 18:57:11,268 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:57:11,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 18:57:11,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 18:57:11,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 18:57:11,271 INFO L87 Difference]: Start difference. First operand 3682 states and 5656 transitions. Second operand 5 states. [2018-11-12 18:57:26,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:57:26,936 INFO L93 Difference]: Finished difference Result 13651 states and 21730 transitions. [2018-11-12 18:57:26,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 18:57:26,936 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2018-11-12 18:57:26,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:57:27,001 INFO L225 Difference]: With dead ends: 13651 [2018-11-12 18:57:27,001 INFO L226 Difference]: Without dead ends: 9975 [2018-11-12 18:57:27,030 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 [2018-11-12 18:57:27,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9975 states. [2018-11-12 18:57:27,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9975 to 9788. [2018-11-12 18:57:27,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9788 states. [2018-11-12 18:57:27,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9788 states to 9788 states and 14485 transitions. [2018-11-12 18:57:27,305 INFO L78 Accepts]: Start accepts. Automaton has 9788 states and 14485 transitions. Word has length 160 [2018-11-12 18:57:27,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:57:27,306 INFO L480 AbstractCegarLoop]: Abstraction has 9788 states and 14485 transitions. [2018-11-12 18:57:27,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 18:57:27,306 INFO L276 IsEmpty]: Start isEmpty. Operand 9788 states and 14485 transitions. [2018-11-12 18:57:27,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-11-12 18:57:27,314 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:57:27,314 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:57:27,314 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:57:27,314 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:57:27,315 INFO L82 PathProgramCache]: Analyzing trace with hash 154081844, now seen corresponding path program 1 times [2018-11-12 18:57:27,315 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:57:27,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:57:27,316 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:57:27,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:57:27,316 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:57:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:57:27,629 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:57:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:57:27,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:57:27,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:57:27,779 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:57:27,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:57:27,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:57:27,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:57:27,781 INFO L87 Difference]: Start difference. First operand 9788 states and 14485 transitions. Second operand 6 states. [2018-11-12 18:57:39,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:57:39,655 INFO L93 Difference]: Finished difference Result 34081 states and 53546 transitions. [2018-11-12 18:57:39,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:57:39,656 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-11-12 18:57:39,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:57:39,780 INFO L225 Difference]: With dead ends: 34081 [2018-11-12 18:57:39,780 INFO L226 Difference]: Without dead ends: 24299 [2018-11-12 18:57:39,863 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 [2018-11-12 18:57:39,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24299 states. [2018-11-12 18:57:40,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24299 to 24076. [2018-11-12 18:57:40,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24076 states. [2018-11-12 18:57:40,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24076 states to 24076 states and 33892 transitions. [2018-11-12 18:57:40,466 INFO L78 Accepts]: Start accepts. Automaton has 24076 states and 33892 transitions. Word has length 178 [2018-11-12 18:57:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:57:40,466 INFO L480 AbstractCegarLoop]: Abstraction has 24076 states and 33892 transitions. [2018-11-12 18:57:40,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:57:40,467 INFO L276 IsEmpty]: Start isEmpty. Operand 24076 states and 33892 transitions. [2018-11-12 18:57:40,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-11-12 18:57:40,475 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:57:40,475 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:57:40,476 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:57:40,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:57:40,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1234851793, now seen corresponding path program 1 times [2018-11-12 18:57:40,476 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:57:40,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:57:40,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:57:40,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:57:40,478 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:57:40,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:57:40,812 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:57:41,029 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:57:41,029 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:57:41,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:57:41,029 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:57:41,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:57:41,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:57:41,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:57:41,031 INFO L87 Difference]: Start difference. First operand 24076 states and 33892 transitions. Second operand 6 states. [2018-11-12 18:57:51,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:57:51,859 INFO L93 Difference]: Finished difference Result 61308 states and 95850 transitions. [2018-11-12 18:57:51,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:57:51,862 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-11-12 18:57:51,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:57:52,041 INFO L225 Difference]: With dead ends: 61308 [2018-11-12 18:57:52,041 INFO L226 Difference]: Without dead ends: 37238 [2018-11-12 18:57:52,101 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 18:57:52,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37238 states. [2018-11-12 18:57:52,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37238 to 37040. [2018-11-12 18:57:52,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37040 states. [2018-11-12 18:57:53,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37040 states to 37040 states and 52758 transitions. [2018-11-12 18:57:53,010 INFO L78 Accepts]: Start accepts. Automaton has 37040 states and 52758 transitions. Word has length 189 [2018-11-12 18:57:53,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:57:53,011 INFO L480 AbstractCegarLoop]: Abstraction has 37040 states and 52758 transitions. [2018-11-12 18:57:53,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:57:53,011 INFO L276 IsEmpty]: Start isEmpty. Operand 37040 states and 52758 transitions. [2018-11-12 18:57:53,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-11-12 18:57:53,020 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:57:53,021 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:57:53,021 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:57:53,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:57:53,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1204068448, now seen corresponding path program 1 times [2018-11-12 18:57:53,022 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:57:53,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:57:53,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:57:53,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:57:53,023 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:57:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:57:53,348 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:57:53,740 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:57:53,740 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:57:53,740 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:57:53,740 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:57:53,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:57:53,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:57:53,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:57:53,743 INFO L87 Difference]: Start difference. First operand 37040 states and 52758 transitions. Second operand 6 states. [2018-11-12 18:58:02,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:58:02,089 INFO L93 Difference]: Finished difference Result 81273 states and 119230 transitions. [2018-11-12 18:58:02,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:58:02,090 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2018-11-12 18:58:02,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:58:02,280 INFO L225 Difference]: With dead ends: 81273 [2018-11-12 18:58:02,280 INFO L226 Difference]: Without dead ends: 44239 [2018-11-12 18:58:02,365 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 18:58:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44239 states. [2018-11-12 18:58:03,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44239 to 44138. [2018-11-12 18:58:03,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44138 states. [2018-11-12 18:58:03,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44138 states to 44138 states and 60165 transitions. [2018-11-12 18:58:03,239 INFO L78 Accepts]: Start accepts. Automaton has 44138 states and 60165 transitions. Word has length 217 [2018-11-12 18:58:03,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:58:03,240 INFO L480 AbstractCegarLoop]: Abstraction has 44138 states and 60165 transitions. [2018-11-12 18:58:03,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:58:03,240 INFO L276 IsEmpty]: Start isEmpty. Operand 44138 states and 60165 transitions. [2018-11-12 18:58:03,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-11-12 18:58:03,259 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:58:03,259 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:58:03,260 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:58:03,260 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:58:03,260 INFO L82 PathProgramCache]: Analyzing trace with hash 171861938, now seen corresponding path program 1 times [2018-11-12 18:58:03,260 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:58:03,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:58:03,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:58:03,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:58:03,261 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:58:03,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:58:03,536 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:58:03,537 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:58:03,537 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:58:03,538 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 268 with the following transitions: [2018-11-12 18:58:03,541 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3067], [3075], [3083], [3087], [3089], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 18:58:03,621 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:58:03,621 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:58:04,658 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:58:04,660 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Performed 2826 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2826 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 18:58:04,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:58:04,707 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:58:05,743 INFO L227 lantSequenceWeakener]: Weakened 243 states. On average, predicates are now at 71.81% of their original sizes. [2018-11-12 18:58:05,744 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:58:06,656 INFO L415 sIntCurrentIteration]: We unified 266 AI predicates to 266 [2018-11-12 18:58:06,657 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:58:06,658 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:58:06,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 18:58:06,658 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:58:06,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:58:06,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:58:06,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:58:06,660 INFO L87 Difference]: Start difference. First operand 44138 states and 60165 transitions. Second operand 11 states. [2018-11-12 18:58:18,976 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:59:01,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:59:01,468 INFO L93 Difference]: Finished difference Result 89079 states and 121224 transitions. [2018-11-12 18:59:01,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 18:59:01,469 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 267 [2018-11-12 18:59:01,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:59:01,615 INFO L225 Difference]: With dead ends: 89079 [2018-11-12 18:59:01,616 INFO L226 Difference]: Without dead ends: 44947 [2018-11-12 18:59:01,725 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 271 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-12 18:59:01,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44947 states. [2018-11-12 18:59:02,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44947 to 44942. [2018-11-12 18:59:02,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44942 states. [2018-11-12 18:59:02,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44942 states to 44942 states and 60980 transitions. [2018-11-12 18:59:02,624 INFO L78 Accepts]: Start accepts. Automaton has 44942 states and 60980 transitions. Word has length 267 [2018-11-12 18:59:02,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:59:02,625 INFO L480 AbstractCegarLoop]: Abstraction has 44942 states and 60980 transitions. [2018-11-12 18:59:02,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:59:02,625 INFO L276 IsEmpty]: Start isEmpty. Operand 44942 states and 60980 transitions. [2018-11-12 18:59:02,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-11-12 18:59:02,637 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:59:02,638 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:59:02,638 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:59:02,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:59:02,639 INFO L82 PathProgramCache]: Analyzing trace with hash -295875732, now seen corresponding path program 1 times [2018-11-12 18:59:02,639 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:59:02,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:59:02,640 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:59:02,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:59:02,640 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:59:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:59:03,085 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:59:03,402 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 18:59:03,402 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:59:03,402 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:59:03,403 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 294 with the following transitions: [2018-11-12 18:59:03,404 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3067], [3075], [3083], [3087], [3089], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3525], [3529], [3533], [3537], [3541], [3545], [3556], [3560], [3564], [3568], [3572], [3576], [3580], [3591], [3595], [3599], [3603], [3614], [3618], [3622], [3626], [3630], [3634], [3638], [3642], [3646], [3650], [3654], [3658], [3662], [3666], [3670], [3674], [3678], [3682], [3686], [3690], [3694], [3698], [3709], [3713], [3717], [3721], [3725], [3729], [3733], [3737], [3741], [3745], [3749], [3753], [3757], [3768], [3772], [3776], [3780], [3784], [3788], [3792], [3796], [3800], [3804], [3815], [3819], [3823], [3827], [3831], [3835], [3839], [3843], [3847], [3851], [3862], [3865], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 18:59:03,416 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:59:03,417 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:59:03,756 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:59:06,320 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:59:06,320 INFO L272 AbstractInterpreter]: Visited 230 different actions 677 times. Merged at 5 different actions 9 times. Never widened. Performed 10036 root evaluator evaluations with a maximum evaluation depth of 6. Performed 10036 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 18:59:06,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:59:06,347 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:59:07,093 INFO L227 lantSequenceWeakener]: Weakened 290 states. On average, predicates are now at 73.39% of their original sizes. [2018-11-12 18:59:07,094 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:59:08,031 INFO L415 sIntCurrentIteration]: We unified 292 AI predicates to 292 [2018-11-12 18:59:08,031 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:59:08,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:59:08,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [4] total 13 [2018-11-12 18:59:08,033 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:59:08,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:59:08,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:59:08,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:59:08,035 INFO L87 Difference]: Start difference. First operand 44942 states and 60980 transitions. Second operand 11 states. Received shutdown request... [2018-11-12 18:59:51,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 18:59:51,638 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 18:59:51,644 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 18:59:51,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:59:51 BoogieIcfgContainer [2018-11-12 18:59:51,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 18:59:51,645 INFO L168 Benchmark]: Toolchain (without parser) took 201460.70 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 980.1 MB. Max. memory is 7.1 GB. [2018-11-12 18:59:51,646 INFO L168 Benchmark]: CDTParser took 0.29 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. [2018-11-12 18:59:51,647 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2468.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-12 18:59:51,649 INFO L168 Benchmark]: Boogie Procedure Inliner took 392.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 816.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. [2018-11-12 18:59:51,650 INFO L168 Benchmark]: Boogie Preprocessor took 290.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. [2018-11-12 18:59:51,650 INFO L168 Benchmark]: RCFGBuilder took 11171.37 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 176.2 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 9.7 MB). Peak memory consumption was 668.5 MB. Max. memory is 7.1 GB. [2018-11-12 18:59:51,651 INFO L168 Benchmark]: TraceAbstraction took 187132.47 ms. Allocated memory was 2.5 GB in the beginning and 4.4 GB in the end (delta: 1.9 GB). Free memory was 2.2 GB in the beginning and 3.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 804.8 MB. Max. memory is 7.1 GB. [2018-11-12 18:59:51,657 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 2468.17 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 392.34 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 816.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 290.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 37.2 MB). Peak memory consumption was 37.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11171.37 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 176.2 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 9.7 MB). Peak memory consumption was 668.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 187132.47 ms. Allocated memory was 2.5 GB in the beginning and 4.4 GB in the end (delta: 1.9 GB). Free memory was 2.2 GB in the beginning and 3.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 804.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 201]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 201). Cancelled while BasicCegarLoop was constructing difference of abstraction (44942states) and FLOYD_HOARE automaton (currently 19 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (50857 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 187.0s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 171.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4856 SDtfs, 26743 SDslu, 3702 SDs, 0 SdLazy, 41547 SolverSat, 8317 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 94.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 626 GetRequests, 554 SyntacticMatches, 5 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44942occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.998360980741766 AbsIntWeakeningRatio, 0.0913978494623656 AbsIntAvgWeakeningVarsNumRemoved, 10.195340501792115 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.8s AutomataMinimizationTime, 7 MinimizatonAttempts, 798 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 1520 NumberOfCodeBlocks, 1520 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1512 ConstructedInterpolants, 0 QuantifiedInterpolants, 1033580 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 6 PerfectInterpolantSequences, 519/580 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown