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/Problem18_label45_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:30:11,084 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:30:11,086 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:30:11,105 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:30:11,105 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:30:11,107 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:30:11,108 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:30:11,113 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:30:11,116 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:30:11,117 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:30:11,118 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:30:11,118 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:30:11,121 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:30:11,122 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:30:11,126 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:30:11,127 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:30:11,128 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:30:11,137 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:30:11,139 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:30:11,143 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:30:11,146 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:30:11,149 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:30:11,154 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:30:11,154 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:30:11,155 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:30:11,156 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:30:11,157 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:30:11,158 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:30:11,158 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:30:11,162 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:30:11,162 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:30:11,163 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:30:11,163 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:30:11,163 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:30:11,164 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:30:11,165 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:30:11,165 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:30:11,180 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:30:11,180 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:30:11,181 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:30:11,181 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:30:11,181 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:30:11,181 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:30:11,182 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:30:11,182 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:30:11,182 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:30:11,182 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:30:11,182 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:30:11,183 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:30:11,183 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:30:11,184 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:30:11,184 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:30:11,184 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:30:11,184 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:30:11,184 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:30:11,185 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:30:11,185 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:30:11,185 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:30:11,185 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:30:11,185 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:30:11,186 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:30:11,186 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:30:11,186 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:30:11,186 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:30:11,186 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:30:11,187 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:30:11,187 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:30:11,187 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:30:11,187 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:30:11,187 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:30:11,188 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:30:11,188 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:30:11,233 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:30:11,251 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:30:11,255 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:30:11,257 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:30:11,257 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:30:11,258 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label45_false-unreach-call.c [2018-11-07 18:30:11,328 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d3b257c7/b43e8f8920874d2f9524bb283f24f363/FLAG10ecbc407 [2018-11-07 18:30:12,094 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:30:12,095 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label45_false-unreach-call.c [2018-11-07 18:30:12,125 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d3b257c7/b43e8f8920874d2f9524bb283f24f363/FLAG10ecbc407 [2018-11-07 18:30:12,143 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d3b257c7/b43e8f8920874d2f9524bb283f24f363 [2018-11-07 18:30:12,154 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:30:12,156 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:30:12,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:30:12,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:30:12,162 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:30:12,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:30:12" (1/1) ... [2018-11-07 18:30:12,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596e7265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:30:12, skipping insertion in model container [2018-11-07 18:30:12,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:30:12" (1/1) ... [2018-11-07 18:30:12,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:30:12,319 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:30:13,517 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:30:13,524 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:30:14,032 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:30:14,062 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:30:14,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:30:14 WrapperNode [2018-11-07 18:30:14,063 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:30:14,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:30:14,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:30:14,065 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:30:14,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:30:14" (1/1) ... [2018-11-07 18:30:14,353 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:30:14" (1/1) ... [2018-11-07 18:30:14,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:30:14,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:30:14,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:30:14,365 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:30:14,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:30:14" (1/1) ... [2018-11-07 18:30:14,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:30:14" (1/1) ... [2018-11-07 18:30:14,395 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:30:14" (1/1) ... [2018-11-07 18:30:14,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:30:14" (1/1) ... [2018-11-07 18:30:14,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:30:14" (1/1) ... [2018-11-07 18:30:14,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:30:14" (1/1) ... [2018-11-07 18:30:14,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:30:14" (1/1) ... [2018-11-07 18:30:14,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:30:14,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:30:14,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:30:14,581 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:30:14,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:30:14" (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 18:30:14,655 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:30:14,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:30:14,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:30:14,655 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 18:30:14,656 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 18:30:14,656 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 18:30:14,656 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 18:30:14,656 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:30:14,656 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:30:14,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:30:14,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:30:14,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:30:14,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:30:22,476 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:30:22,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:30:22 BoogieIcfgContainer [2018-11-07 18:30:22,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:30:22,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:30:22,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:30:22,481 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:30:22,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:30:12" (1/3) ... [2018-11-07 18:30:22,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f9809f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:30:22, skipping insertion in model container [2018-11-07 18:30:22,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:30:14" (2/3) ... [2018-11-07 18:30:22,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49f9809f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:30:22, skipping insertion in model container [2018-11-07 18:30:22,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:30:22" (3/3) ... [2018-11-07 18:30:22,485 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label45_false-unreach-call.c [2018-11-07 18:30:22,496 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:30:22,507 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:30:22,525 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:30:22,573 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:30:22,573 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:30:22,573 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:30:22,574 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:30:22,574 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:30:22,574 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:30:22,574 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:30:22,574 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:30:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 18:30:22,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-11-07 18:30:22,622 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:30:22,624 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] [2018-11-07 18:30:22,626 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:30:22,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:30:22,633 INFO L82 PathProgramCache]: Analyzing trace with hash -1137979268, now seen corresponding path program 1 times [2018-11-07 18:30:22,636 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:30:22,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:30:22,690 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:30:22,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:30:22,691 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:30:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:30:23,114 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:30:23,232 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 18:30:23,235 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:30:23,236 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:30:23,236 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:30:23,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:30:23,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:30:23,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:30:23,264 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-11-07 18:30:29,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:30:29,824 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-11-07 18:30:29,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:30:29,827 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2018-11-07 18:30:29,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:30:29,869 INFO L225 Difference]: With dead ends: 2251 [2018-11-07 18:30:29,870 INFO L226 Difference]: Without dead ends: 1474 [2018-11-07 18:30:29,886 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:30:29,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-11-07 18:30:30,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-11-07 18:30:30,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 18:30:30,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2721 transitions. [2018-11-07 18:30:30,078 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2721 transitions. Word has length 36 [2018-11-07 18:30:30,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:30:30,079 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2721 transitions. [2018-11-07 18:30:30,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:30:30,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2721 transitions. [2018-11-07 18:30:30,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 18:30:30,087 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:30:30,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:30:30,087 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:30:30,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:30:30,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1760382179, now seen corresponding path program 1 times [2018-11-07 18:30:30,088 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:30:30,089 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:30:30,090 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:30:30,090 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:30:30,090 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:30:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:30:30,491 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:30:30,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:30:30,492 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:30:30,492 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:30:30,494 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:30:30,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:30:30,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:30:30,495 INFO L87 Difference]: Start difference. First operand 1474 states and 2721 transitions. Second operand 6 states. [2018-11-07 18:30:44,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:30:44,154 INFO L93 Difference]: Finished difference Result 4419 states and 8244 transitions. [2018-11-07 18:30:44,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:30:44,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-07 18:30:44,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:30:44,179 INFO L225 Difference]: With dead ends: 4419 [2018-11-07 18:30:44,179 INFO L226 Difference]: Without dead ends: 2951 [2018-11-07 18:30:44,184 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:30:44,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-11-07 18:30:44,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2928. [2018-11-07 18:30:44,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2928 states. [2018-11-07 18:30:44,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 5087 transitions. [2018-11-07 18:30:44,284 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 5087 transitions. Word has length 125 [2018-11-07 18:30:44,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:30:44,284 INFO L480 AbstractCegarLoop]: Abstraction has 2928 states and 5087 transitions. [2018-11-07 18:30:44,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:30:44,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 5087 transitions. [2018-11-07 18:30:44,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-07 18:30:44,291 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:30:44,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:30:44,291 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:30:44,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:30:44,292 INFO L82 PathProgramCache]: Analyzing trace with hash 439541734, now seen corresponding path program 1 times [2018-11-07 18:30:44,292 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:30:44,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:30:44,293 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:30:44,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:30:44,294 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:30:44,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:30:44,554 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:30:44,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:30:44,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:30:44,554 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:30:44,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:30:44,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:30:44,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:30:44,556 INFO L87 Difference]: Start difference. First operand 2928 states and 5087 transitions. Second operand 6 states. [2018-11-07 18:30:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:30:53,067 INFO L93 Difference]: Finished difference Result 10194 states and 17948 transitions. [2018-11-07 18:30:53,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:30:53,072 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-11-07 18:30:53,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:30:53,121 INFO L225 Difference]: With dead ends: 10194 [2018-11-07 18:30:53,122 INFO L226 Difference]: Without dead ends: 7272 [2018-11-07 18:30:53,140 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:30:53,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2018-11-07 18:30:53,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 7208. [2018-11-07 18:30:53,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7208 states. [2018-11-07 18:30:53,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7208 states to 7208 states and 11881 transitions. [2018-11-07 18:30:53,345 INFO L78 Accepts]: Start accepts. Automaton has 7208 states and 11881 transitions. Word has length 172 [2018-11-07 18:30:53,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:30:53,346 INFO L480 AbstractCegarLoop]: Abstraction has 7208 states and 11881 transitions. [2018-11-07 18:30:53,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:30:53,346 INFO L276 IsEmpty]: Start isEmpty. Operand 7208 states and 11881 transitions. [2018-11-07 18:30:53,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-07 18:30:53,352 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:30:53,353 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:30:53,353 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:30:53,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:30:53,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1837933570, now seen corresponding path program 1 times [2018-11-07 18:30:53,354 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:30:53,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:30:53,355 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:30:53,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:30:53,355 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:30:53,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:30:53,590 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:30:53,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:30:53,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:30:53,591 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:30:53,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:30:53,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:30:53,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:30:53,593 INFO L87 Difference]: Start difference. First operand 7208 states and 11881 transitions. Second operand 6 states. [2018-11-07 18:30:58,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:30:58,802 INFO L93 Difference]: Finished difference Result 17365 states and 29107 transitions. [2018-11-07 18:30:58,803 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:30:58,803 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 174 [2018-11-07 18:30:58,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:30:58,860 INFO L225 Difference]: With dead ends: 17365 [2018-11-07 18:30:58,861 INFO L226 Difference]: Without dead ends: 10163 [2018-11-07 18:30:58,888 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 18:30:58,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2018-11-07 18:30:59,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10108. [2018-11-07 18:30:59,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10108 states. [2018-11-07 18:30:59,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10108 states to 10108 states and 14258 transitions. [2018-11-07 18:30:59,162 INFO L78 Accepts]: Start accepts. Automaton has 10108 states and 14258 transitions. Word has length 174 [2018-11-07 18:30:59,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:30:59,162 INFO L480 AbstractCegarLoop]: Abstraction has 10108 states and 14258 transitions. [2018-11-07 18:30:59,162 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:30:59,163 INFO L276 IsEmpty]: Start isEmpty. Operand 10108 states and 14258 transitions. [2018-11-07 18:30:59,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-11-07 18:30:59,171 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:30:59,171 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:30:59,173 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:30:59,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:30:59,174 INFO L82 PathProgramCache]: Analyzing trace with hash 268481184, now seen corresponding path program 1 times [2018-11-07 18:30:59,174 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:30:59,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:30:59,175 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:30:59,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:30:59,175 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:30:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:30:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-07 18:30:59,454 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:30:59,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:30:59,455 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:30:59,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:30:59,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:30:59,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:30:59,456 INFO L87 Difference]: Start difference. First operand 10108 states and 14258 transitions. Second operand 4 states. [2018-11-07 18:31:08,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:31:08,019 INFO L93 Difference]: Finished difference Result 28811 states and 41798 transitions. [2018-11-07 18:31:08,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:31:08,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 232 [2018-11-07 18:31:08,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:31:08,114 INFO L225 Difference]: With dead ends: 28811 [2018-11-07 18:31:08,114 INFO L226 Difference]: Without dead ends: 18709 [2018-11-07 18:31:08,170 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 18:31:08,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18709 states. [2018-11-07 18:31:08,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18709 to 18709. [2018-11-07 18:31:08,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18709 states. [2018-11-07 18:31:08,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18709 states to 18709 states and 25926 transitions. [2018-11-07 18:31:08,632 INFO L78 Accepts]: Start accepts. Automaton has 18709 states and 25926 transitions. Word has length 232 [2018-11-07 18:31:08,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:31:08,633 INFO L480 AbstractCegarLoop]: Abstraction has 18709 states and 25926 transitions. [2018-11-07 18:31:08,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:31:08,633 INFO L276 IsEmpty]: Start isEmpty. Operand 18709 states and 25926 transitions. [2018-11-07 18:31:08,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-11-07 18:31:08,652 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:31:08,652 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 18:31:08,653 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:31:08,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:31:08,653 INFO L82 PathProgramCache]: Analyzing trace with hash -418391288, now seen corresponding path program 1 times [2018-11-07 18:31:08,654 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:31:08,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:31:08,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:31:08,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:31:08,655 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:31:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:31:09,047 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 133 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:31:09,047 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:31:09,048 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:31:09,050 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 277 with the following transitions: [2018-11-07 18:31:09,055 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1811], [1813], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2368], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 18:31:09,130 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:31:09,130 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:31:09,737 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:31:09,739 INFO L272 AbstractInterpreter]: Visited 138 different actions 138 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 18:31:09,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:31:09,772 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:31:10,372 INFO L227 lantSequenceWeakener]: Weakened 267 states. On average, predicates are now at 77.57% of their original sizes. [2018-11-07 18:31:10,372 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:31:10,728 INFO L415 sIntCurrentIteration]: We unified 275 AI predicates to 275 [2018-11-07 18:31:10,732 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:31:10,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:31:10,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-11-07 18:31:10,733 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:31:10,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 18:31:10,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 18:31:10,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 18:31:10,738 INFO L87 Difference]: Start difference. First operand 18709 states and 25926 transitions. Second operand 7 states. [2018-11-07 18:31:18,658 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:31:38,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:31:38,701 INFO L93 Difference]: Finished difference Result 38117 states and 52714 transitions. [2018-11-07 18:31:38,701 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:31:38,701 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2018-11-07 18:31:38,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:31:38,772 INFO L225 Difference]: With dead ends: 38117 [2018-11-07 18:31:38,773 INFO L226 Difference]: Without dead ends: 19414 [2018-11-07 18:31:38,816 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 276 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:31:38,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19414 states. [2018-11-07 18:31:39,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19414 to 19412. [2018-11-07 18:31:39,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19412 states. [2018-11-07 18:31:39,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19412 states to 19412 states and 26641 transitions. [2018-11-07 18:31:39,221 INFO L78 Accepts]: Start accepts. Automaton has 19412 states and 26641 transitions. Word has length 276 [2018-11-07 18:31:39,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:31:39,221 INFO L480 AbstractCegarLoop]: Abstraction has 19412 states and 26641 transitions. [2018-11-07 18:31:39,222 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 18:31:39,222 INFO L276 IsEmpty]: Start isEmpty. Operand 19412 states and 26641 transitions. [2018-11-07 18:31:39,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 464 [2018-11-07 18:31:39,244 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:31:39,244 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:31:39,245 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:31:39,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:31:39,245 INFO L82 PathProgramCache]: Analyzing trace with hash -41660661, now seen corresponding path program 1 times [2018-11-07 18:31:39,245 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:31:39,246 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:31:39,246 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:31:39,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:31:39,247 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:31:39,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:31:39,775 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:31:39,979 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:31:40,188 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 18:31:40,474 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 18:31:41,426 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 146 proven. 283 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:31:41,426 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:31:41,426 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:31:41,427 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 464 with the following transitions: [2018-11-07 18:31:41,427 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1811], [1813], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2368], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 18:31:41,434 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:31:41,435 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:31:42,017 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:31:42,017 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:31:42,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:31:42,053 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:31:43,177 INFO L227 lantSequenceWeakener]: Weakened 138 states. On average, predicates are now at 77.6% of their original sizes. [2018-11-07 18:31:43,177 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:31:43,787 INFO L415 sIntCurrentIteration]: We unified 462 AI predicates to 462 [2018-11-07 18:31:43,788 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:31:43,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:31:43,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [11] total 25 [2018-11-07 18:31:43,788 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:31:43,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 18:31:43,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 18:31:43,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-11-07 18:31:43,790 INFO L87 Difference]: Start difference. First operand 19412 states and 26641 transitions. Second operand 16 states. [2018-11-07 18:32:18,764 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 18:32:54,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:32:54,756 INFO L93 Difference]: Finished difference Result 40598 states and 55544 transitions. [2018-11-07 18:32:54,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 18:32:54,756 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 463 [2018-11-07 18:32:54,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:32:54,817 INFO L225 Difference]: With dead ends: 40598 [2018-11-07 18:32:54,817 INFO L226 Difference]: Without dead ends: 19703 [2018-11-07 18:32:54,849 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 473 GetRequests, 448 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2018-11-07 18:32:54,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2018-11-07 18:32:55,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 19412. [2018-11-07 18:32:55,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19412 states. [2018-11-07 18:32:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19412 states to 19412 states and 26633 transitions. [2018-11-07 18:32:55,180 INFO L78 Accepts]: Start accepts. Automaton has 19412 states and 26633 transitions. Word has length 463 [2018-11-07 18:32:55,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:32:55,180 INFO L480 AbstractCegarLoop]: Abstraction has 19412 states and 26633 transitions. [2018-11-07 18:32:55,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 18:32:55,181 INFO L276 IsEmpty]: Start isEmpty. Operand 19412 states and 26633 transitions. [2018-11-07 18:32:55,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 805 [2018-11-07 18:32:55,211 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:32:55,212 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:32:55,212 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:32:55,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:32:55,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1601314480, now seen corresponding path program 1 times [2018-11-07 18:32:55,213 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:32:55,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:32:55,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:32:55,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:32:55,214 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:32:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:32:55,806 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:33:06,577 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 135 proven. 168 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2018-11-07 18:33:06,578 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:33:06,578 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:33:06,578 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 805 with the following transitions: [2018-11-07 18:33:06,579 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [37], [739], [740], [744], [748], [752], [756], [760], [764], [768], [772], [776], [780], [784], [788], [792], [796], [800], [804], [808], [812], [816], [820], [824], [828], [832], [836], [840], [844], [848], [852], [856], [860], [864], [868], [872], [876], [880], [884], [888], [892], [896], [900], [904], [908], [912], [916], [920], [924], [928], [932], [936], [940], [944], [948], [952], [956], [960], [964], [968], [972], [976], [980], [984], [988], [992], [996], [1000], [1004], [1008], [1012], [1016], [1020], [1024], [1028], [1032], [1036], [1040], [1044], [1048], [1052], [1056], [1060], [1064], [1068], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1184], [1188], [1192], [1196], [1200], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1248], [1252], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1360], [1364], [1368], [1372], [1376], [1380], [1384], [1388], [1392], [1396], [1400], [1404], [1408], [1412], [1416], [1420], [1424], [1428], [1432], [1436], [1440], [1444], [1448], [1452], [1456], [1460], [1464], [1468], [1472], [1476], [1480], [1484], [1488], [1492], [1496], [1500], [1504], [1508], [1512], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1552], [1556], [1560], [1564], [1568], [1572], [1576], [1580], [1584], [1588], [1592], [1596], [1600], [1604], [1608], [1612], [1616], [1620], [1622], [1623], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1811], [1813], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2264], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2368], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2797], [2801], [2805], [2809], [2813], [2817], [2821], [2825], [2829], [2833], [2837], [2841], [2845], [2849], [2853], [2857], [2861], [2865], [2869], [2873], [2877], [2881], [2885], [2889], [2893], [2897], [2901], [2905], [2909], [2913], [2917], [2921], [2925], [2929], [2933], [2937], [2941], [2945], [2949], [2953], [2957], [2961], [2965], [2969], [2973], [2977], [2981], [2985], [2989], [2993], [2995], [2996], [3000], [3004], [3010], [3014], [3016], [3021], [3022], [3023], [3024], [3025], [3026], [3027], [3029], [3030] [2018-11-07 18:33:06,593 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:33:06,593 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:33:07,576 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:33:07,577 INFO L272 AbstractInterpreter]: Visited 537 different actions 1068 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 18:33:07,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:33:07,585 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:33:08,671 INFO L227 lantSequenceWeakener]: Weakened 368 states. On average, predicates are now at 77.67% of their original sizes. [2018-11-07 18:33:08,671 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:33:09,647 INFO L415 sIntCurrentIteration]: We unified 803 AI predicates to 803 [2018-11-07 18:33:09,648 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:33:09,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:33:09,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [8] total 37 [2018-11-07 18:33:09,648 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:33:09,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-07 18:33:09,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-07 18:33:09,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=805, Unknown=0, NotChecked=0, Total=930 [2018-11-07 18:33:09,650 INFO L87 Difference]: Start difference. First operand 19412 states and 26633 transitions. Second operand 31 states. Received shutdown request... [2018-11-07 18:33:42,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 18:33:42,567 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:33:42,571 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:33:42,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:33:42 BoogieIcfgContainer [2018-11-07 18:33:42,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:33:42,573 INFO L168 Benchmark]: Toolchain (without parser) took 210417.62 ms. Allocated memory was 1.5 GB in the beginning and 5.7 GB in the end (delta: 4.2 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 18:33:42,575 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 18:33:42,576 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1905.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-07 18:33:42,576 INFO L168 Benchmark]: Boogie Procedure Inliner took 300.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -948.9 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-11-07 18:33:42,578 INFO L168 Benchmark]: Boogie Preprocessor took 215.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-11-07 18:33:42,579 INFO L168 Benchmark]: RCFGBuilder took 7896.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 519.2 MB). Peak memory consumption was 519.2 MB. Max. memory is 7.1 GB. [2018-11-07 18:33:42,580 INFO L168 Benchmark]: TraceAbstraction took 200094.01 ms. Allocated memory was 2.3 GB in the beginning and 5.7 GB in the end (delta: 3.4 GB). Free memory was 1.7 GB in the beginning and 3.9 GB in the end (delta: -2.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 18:33:42,585 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1905.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 300.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -948.9 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 215.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7896.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 519.2 MB). Peak memory consumption was 519.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 200094.01 ms. Allocated memory was 2.3 GB in the beginning and 5.7 GB in the end (delta: 3.4 GB). Free memory was 1.7 GB in the beginning and 3.9 GB in the end (delta: -2.2 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 96). Cancelled while BasicCegarLoop was constructing difference of abstraction (19412states) and FLOYD_HOARE automaton (currently 25 states, 31 states before enhancement),while ReachableStatesComputation was computing reachable states (591 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 200.0s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 174.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3342 SDtfs, 19663 SDslu, 1046 SDs, 0 SdLazy, 45045 SolverSat, 6766 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.2s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1612 GetRequests, 1503 SyntacticMatches, 5 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 634 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19412occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.3s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.99810016964026 AbsIntWeakeningRatio, 0.06363636363636363 AbsIntAvgWeakeningVarsNumRemoved, 12.37987012987013 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 435 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.9s InterpolantComputationTime, 2282 NumberOfCodeBlocks, 2282 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2274 ConstructedInterpolants, 0 QuantifiedInterpolants, 4081131 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 789/1267 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown