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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label29_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:41:17,165 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:41:17,168 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:41:17,183 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:41:17,184 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:41:17,185 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:41:17,186 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:41:17,188 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:41:17,190 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:41:17,191 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:41:17,192 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:41:17,192 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:41:17,193 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:41:17,194 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:41:17,195 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:41:17,196 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:41:17,197 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:41:17,199 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:41:17,201 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:41:17,203 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:41:17,204 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:41:17,205 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:41:17,207 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:41:17,208 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:41:17,208 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:41:17,209 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:41:17,210 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:41:17,211 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:41:17,212 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:41:17,213 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:41:17,213 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:41:17,214 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:41:17,214 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:41:17,214 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:41:17,215 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:41:17,216 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:41:17,216 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.epf [2018-11-07 14:41:17,239 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:41:17,239 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:41:17,240 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:41:17,240 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:41:17,240 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:41:17,241 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:41:17,241 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:41:17,241 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:41:17,241 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:41:17,241 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:41:17,242 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:41:17,242 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:41:17,243 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:41:17,243 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:41:17,244 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:41:17,244 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:41:17,244 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:41:17,244 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:41:17,244 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:41:17,244 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:41:17,245 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:41:17,245 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:41:17,245 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:41:17,245 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:41:17,245 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:41:17,247 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:41:17,247 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:41:17,247 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:41:17,247 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:41:17,249 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:41:17,249 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:41:17,249 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:41:17,249 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:41:17,249 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:41:17,301 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:41:17,315 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:41:17,319 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:41:17,321 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:41:17,321 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:41:17,322 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label29_true-unreach-call.c [2018-11-07 14:41:17,399 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b231613c/0cb3c415bb1247418f997bc0b30241e9/FLAG1befd4d32 [2018-11-07 14:41:18,295 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:41:18,296 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label29_true-unreach-call.c [2018-11-07 14:41:18,340 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b231613c/0cb3c415bb1247418f997bc0b30241e9/FLAG1befd4d32 [2018-11-07 14:41:18,360 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8b231613c/0cb3c415bb1247418f997bc0b30241e9 [2018-11-07 14:41:18,375 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:41:18,377 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:41:18,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:41:18,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:41:18,386 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:41:18,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:41:18" (1/1) ... [2018-11-07 14:41:18,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627d1230 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:18, skipping insertion in model container [2018-11-07 14:41:18,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:41:18" (1/1) ... [2018-11-07 14:41:18,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:41:18,580 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:41:19,952 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:41:19,958 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:41:20,489 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:41:20,524 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:41:20,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:20 WrapperNode [2018-11-07 14:41:20,525 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:41:20,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:41:20,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:41:20,526 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:41:20,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:20" (1/1) ... [2018-11-07 14:41:20,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:20" (1/1) ... [2018-11-07 14:41:20,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:41:20,873 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:41:20,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:41:20,874 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:41:20,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:20" (1/1) ... [2018-11-07 14:41:20,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:20" (1/1) ... [2018-11-07 14:41:20,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:20" (1/1) ... [2018-11-07 14:41:20,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:20" (1/1) ... [2018-11-07 14:41:20,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:20" (1/1) ... [2018-11-07 14:41:21,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:20" (1/1) ... [2018-11-07 14:41:21,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:20" (1/1) ... [2018-11-07 14:41:21,076 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:41:21,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:41:21,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:41:21,078 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:41:21,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:20" (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 14:41:21,152 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:41:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:41:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:41:21,153 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 14:41:21,153 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 14:41:21,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 14:41:21,154 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 14:41:21,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 14:41:21,154 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 14:41:21,154 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:41:21,155 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:41:21,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:41:21,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:41:21,156 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:41:21,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:41:30,168 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:41:30,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:41:30 BoogieIcfgContainer [2018-11-07 14:41:30,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:41:30,170 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:41:30,170 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:41:30,173 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:41:30,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:41:18" (1/3) ... [2018-11-07 14:41:30,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5e27a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:41:30, skipping insertion in model container [2018-11-07 14:41:30,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:20" (2/3) ... [2018-11-07 14:41:30,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5e27a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:41:30, skipping insertion in model container [2018-11-07 14:41:30,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:41:30" (3/3) ... [2018-11-07 14:41:30,177 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label29_true-unreach-call.c [2018-11-07 14:41:30,188 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:41:30,204 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:41:30,223 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:41:30,274 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:41:30,274 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:41:30,275 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:41:30,275 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:41:30,275 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:41:30,275 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:41:30,275 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:41:30,276 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:41:30,420 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 14:41:30,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-07 14:41:30,431 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:41:30,433 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] [2018-11-07 14:41:30,436 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:41:30,454 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:41:30,455 INFO L82 PathProgramCache]: Analyzing trace with hash -648066108, now seen corresponding path program 1 times [2018-11-07 14:41:30,457 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:41:30,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:41:30,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:41:30,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:41:30,509 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:41:30,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:41:31,029 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-07 14:41:31,098 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 14:41:31,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:41:31,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:41:31,109 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:41:31,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:41:31,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:41:31,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:41:31,138 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 4 states. [2018-11-07 14:41:42,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:41:42,453 INFO L93 Difference]: Finished difference Result 3234 states and 6255 transitions. [2018-11-07 14:41:42,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:41:42,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-11-07 14:41:42,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:41:42,508 INFO L225 Difference]: With dead ends: 3234 [2018-11-07 14:41:42,508 INFO L226 Difference]: Without dead ends: 2388 [2018-11-07 14:41:42,519 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 14:41:42,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-11-07 14:41:42,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-11-07 14:41:42,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-11-07 14:41:42,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3845 transitions. [2018-11-07 14:41:42,721 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3845 transitions. Word has length 62 [2018-11-07 14:41:42,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:41:42,722 INFO L480 AbstractCegarLoop]: Abstraction has 2388 states and 3845 transitions. [2018-11-07 14:41:42,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:41:42,722 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3845 transitions. [2018-11-07 14:41:42,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-07 14:41:42,733 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:41:42,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:42,734 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:41:42,734 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:41:42,734 INFO L82 PathProgramCache]: Analyzing trace with hash -267235377, now seen corresponding path program 1 times [2018-11-07 14:41:42,734 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:41:42,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:41:42,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:41:42,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:41:42,736 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:41:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:41:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:41:42,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:41:42,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:41:42,994 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:41:42,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:41:42,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:41:42,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:41:42,997 INFO L87 Difference]: Start difference. First operand 2388 states and 3845 transitions. Second operand 5 states. [2018-11-07 14:41:56,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:41:56,062 INFO L93 Difference]: Finished difference Result 7257 states and 11780 transitions. [2018-11-07 14:41:56,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 14:41:56,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-11-07 14:41:56,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:41:56,098 INFO L225 Difference]: With dead ends: 7257 [2018-11-07 14:41:56,098 INFO L226 Difference]: Without dead ends: 4875 [2018-11-07 14:41:56,106 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:41:56,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2018-11-07 14:41:56,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 4829. [2018-11-07 14:41:56,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4829 states. [2018-11-07 14:41:56,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4829 states to 4829 states and 7153 transitions. [2018-11-07 14:41:56,277 INFO L78 Accepts]: Start accepts. Automaton has 4829 states and 7153 transitions. Word has length 143 [2018-11-07 14:41:56,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:41:56,278 INFO L480 AbstractCegarLoop]: Abstraction has 4829 states and 7153 transitions. [2018-11-07 14:41:56,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:41:56,278 INFO L276 IsEmpty]: Start isEmpty. Operand 4829 states and 7153 transitions. [2018-11-07 14:41:56,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-07 14:41:56,295 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:41:56,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:41:56,296 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:41:56,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:41:56,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1673617562, now seen corresponding path program 1 times [2018-11-07 14:41:56,297 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:41:56,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:41:56,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:41:56,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:41:56,300 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:41:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:41:56,581 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:41:56,581 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:41:56,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:41:56,581 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:41:56,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:41:56,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:41:56,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:41:56,583 INFO L87 Difference]: Start difference. First operand 4829 states and 7153 transitions. Second operand 6 states. [2018-11-07 14:42:03,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:42:03,757 INFO L93 Difference]: Finished difference Result 14643 states and 22384 transitions. [2018-11-07 14:42:03,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:42:03,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-11-07 14:42:03,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:42:03,810 INFO L225 Difference]: With dead ends: 14643 [2018-11-07 14:42:03,810 INFO L226 Difference]: Without dead ends: 9820 [2018-11-07 14:42:03,825 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:42:03,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9820 states. [2018-11-07 14:42:04,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9820 to 9698. [2018-11-07 14:42:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9698 states. [2018-11-07 14:42:04,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9698 states to 9698 states and 14207 transitions. [2018-11-07 14:42:04,105 INFO L78 Accepts]: Start accepts. Automaton has 9698 states and 14207 transitions. Word has length 176 [2018-11-07 14:42:04,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:42:04,106 INFO L480 AbstractCegarLoop]: Abstraction has 9698 states and 14207 transitions. [2018-11-07 14:42:04,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:42:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand 9698 states and 14207 transitions. [2018-11-07 14:42:04,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2018-11-07 14:42:04,112 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:42:04,112 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:04,113 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:42:04,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:42:04,113 INFO L82 PathProgramCache]: Analyzing trace with hash 924991159, now seen corresponding path program 1 times [2018-11-07 14:42:04,113 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:42:04,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:42:04,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:42:04,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:42:04,116 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:42:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:42:04,498 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:42:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:42:04,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:42:04,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:42:04,932 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:42:04,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:42:04,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:42:04,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:42:04,934 INFO L87 Difference]: Start difference. First operand 9698 states and 14207 transitions. Second operand 6 states. [2018-11-07 14:42:15,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:42:15,043 INFO L93 Difference]: Finished difference Result 33086 states and 50892 transitions. [2018-11-07 14:42:15,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:42:15,046 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 187 [2018-11-07 14:42:15,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:42:15,169 INFO L225 Difference]: With dead ends: 33086 [2018-11-07 14:42:15,170 INFO L226 Difference]: Without dead ends: 23394 [2018-11-07 14:42:15,223 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:42:15,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23394 states. [2018-11-07 14:42:15,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23394 to 23284. [2018-11-07 14:42:15,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23284 states. [2018-11-07 14:42:15,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23284 states to 23284 states and 33060 transitions. [2018-11-07 14:42:15,795 INFO L78 Accepts]: Start accepts. Automaton has 23284 states and 33060 transitions. Word has length 187 [2018-11-07 14:42:15,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:42:15,796 INFO L480 AbstractCegarLoop]: Abstraction has 23284 states and 33060 transitions. [2018-11-07 14:42:15,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:42:15,796 INFO L276 IsEmpty]: Start isEmpty. Operand 23284 states and 33060 transitions. [2018-11-07 14:42:15,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-07 14:42:15,802 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:42:15,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:15,803 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:42:15,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:42:15,803 INFO L82 PathProgramCache]: Analyzing trace with hash 862970119, now seen corresponding path program 1 times [2018-11-07 14:42:15,803 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:42:15,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:42:15,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:42:15,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:42:15,805 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:42:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:42:16,097 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:42:16,098 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:42:16,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:42:16,098 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:42:16,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:42:16,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:42:16,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:42:16,100 INFO L87 Difference]: Start difference. First operand 23284 states and 33060 transitions. Second operand 4 states. [2018-11-07 14:42:24,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:42:24,230 INFO L93 Difference]: Finished difference Result 56002 states and 81191 transitions. [2018-11-07 14:42:24,236 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:42:24,236 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 211 [2018-11-07 14:42:24,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:42:24,349 INFO L225 Difference]: With dead ends: 56002 [2018-11-07 14:42:24,350 INFO L226 Difference]: Without dead ends: 32724 [2018-11-07 14:42:24,434 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:42:24,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32724 states. [2018-11-07 14:42:24,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32724 to 32714. [2018-11-07 14:42:24,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32714 states. [2018-11-07 14:42:25,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32714 states to 32714 states and 42365 transitions. [2018-11-07 14:42:25,039 INFO L78 Accepts]: Start accepts. Automaton has 32714 states and 42365 transitions. Word has length 211 [2018-11-07 14:42:25,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:42:25,039 INFO L480 AbstractCegarLoop]: Abstraction has 32714 states and 42365 transitions. [2018-11-07 14:42:25,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:42:25,040 INFO L276 IsEmpty]: Start isEmpty. Operand 32714 states and 42365 transitions. [2018-11-07 14:42:25,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-07 14:42:25,045 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:42:25,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:42:25,045 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:42:25,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:42:25,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1084674450, now seen corresponding path program 1 times [2018-11-07 14:42:25,046 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:42:25,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:42:25,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:42:25,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:42:25,047 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:42:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:42:25,362 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:42:25,615 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 14:42:25,615 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:42:25,615 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:42:25,616 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-11-07 14:42:25,624 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2263], [2265], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2680], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 14:42:25,694 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:42:25,695 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:42:26,481 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:42:28,564 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:42:28,566 INFO L272 AbstractInterpreter]: Visited 157 different actions 458 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 14:42:28,610 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:42:28,610 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:42:29,545 INFO L227 lantSequenceWeakener]: Weakened 11 states. On average, predicates are now at 79.17% of their original sizes. [2018-11-07 14:42:29,545 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:42:30,570 INFO L415 sIntCurrentIteration]: We unified 211 AI predicates to 211 [2018-11-07 14:42:30,571 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:42:30,572 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:42:30,572 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [4] total 19 [2018-11-07 14:42:30,572 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:42:30,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 14:42:30,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 14:42:30,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2018-11-07 14:42:30,574 INFO L87 Difference]: Start difference. First operand 32714 states and 42365 transitions. Second operand 17 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown