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/Problem13_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:49:09,387 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:49:09,390 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:49:09,412 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:49:09,413 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:49:09,414 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:49:09,416 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:49:09,419 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:49:09,422 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:49:09,423 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:49:09,425 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:49:09,425 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:49:09,427 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:49:09,428 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:49:09,436 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:49:09,437 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:49:09,443 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:49:09,444 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:49:09,446 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:49:09,451 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:49:09,453 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:49:09,455 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:49:09,458 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:49:09,458 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:49:09,458 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:49:09,461 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:49:09,462 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:49:09,463 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:49:09,463 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:49:09,464 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:49:09,465 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:49:09,465 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:49:09,465 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:49:09,466 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:49:09,467 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:49:09,470 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:49:09,470 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 14:49:09,499 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:49:09,500 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:49:09,501 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:49:09,501 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:49:09,501 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:49:09,502 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:49:09,502 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:49:09,502 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:49:09,502 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:49:09,503 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:49:09,503 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:49:09,503 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:49:09,504 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:49:09,504 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:49:09,504 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:49:09,505 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:49:09,505 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:49:09,505 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:49:09,505 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:49:09,505 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:49:09,506 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:49:09,506 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:49:09,506 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:49:09,506 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:49:09,506 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:49:09,506 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:49:09,508 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:49:09,508 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:49:09,508 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:49:09,509 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:49:09,509 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:49:09,509 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:49:09,509 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:49:09,509 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:49:09,582 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:49:09,603 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:49:09,609 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:49:09,610 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:49:09,611 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:49:09,612 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label05_true-unreach-call.c [2018-11-07 14:49:09,686 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e870cfcc/10450c2e281f4902997046bcfdc54d2a/FLAGe979793f0 [2018-11-07 14:49:10,560 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:49:10,561 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label05_true-unreach-call.c [2018-11-07 14:49:10,607 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e870cfcc/10450c2e281f4902997046bcfdc54d2a/FLAGe979793f0 [2018-11-07 14:49:10,626 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e870cfcc/10450c2e281f4902997046bcfdc54d2a [2018-11-07 14:49:10,641 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:49:10,643 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:49:10,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:49:10,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:49:10,650 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:49:10,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:49:10" (1/1) ... [2018-11-07 14:49:10,655 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31523df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:10, skipping insertion in model container [2018-11-07 14:49:10,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:49:10" (1/1) ... [2018-11-07 14:49:10,667 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:49:10,867 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:49:12,360 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:49:12,368 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:49:13,121 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:49:13,160 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:49:13,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:13 WrapperNode [2018-11-07 14:49:13,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:49:13,162 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:49:13,162 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:49:13,162 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:49:13,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:13" (1/1) ... [2018-11-07 14:49:13,568 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:13" (1/1) ... [2018-11-07 14:49:13,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:49:13,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:49:13,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:49:13,579 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:49:13,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:13" (1/1) ... [2018-11-07 14:49:13,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:13" (1/1) ... [2018-11-07 14:49:13,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:13" (1/1) ... [2018-11-07 14:49:13,623 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:13" (1/1) ... [2018-11-07 14:49:13,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:13" (1/1) ... [2018-11-07 14:49:13,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:13" (1/1) ... [2018-11-07 14:49:13,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:13" (1/1) ... [2018-11-07 14:49:13,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:49:13,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:49:13,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:49:13,939 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:49:13,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:13" (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 14:49:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:49:14,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:49:14,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:49:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 14:49:14,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 14:49:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 14:49:14,025 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 14:49:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 14:49:14,025 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 14:49:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:49:14,028 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:49:14,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:49:14,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:49:14,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:49:14,030 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:49:24,147 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:49:24,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:49:24 BoogieIcfgContainer [2018-11-07 14:49:24,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:49:24,149 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:49:24,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:49:24,153 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:49:24,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:49:10" (1/3) ... [2018-11-07 14:49:24,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73dca971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:49:24, skipping insertion in model container [2018-11-07 14:49:24,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:13" (2/3) ... [2018-11-07 14:49:24,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73dca971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:49:24, skipping insertion in model container [2018-11-07 14:49:24,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:49:24" (3/3) ... [2018-11-07 14:49:24,157 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label05_true-unreach-call.c [2018-11-07 14:49:24,167 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:49:24,177 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:49:24,194 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:49:24,241 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:49:24,241 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:49:24,241 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:49:24,242 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:49:24,242 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:49:24,242 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:49:24,242 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:49:24,242 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:49:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 14:49:24,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-07 14:49:24,293 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:49:24,295 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] [2018-11-07 14:49:24,297 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:49:24,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:49:24,303 INFO L82 PathProgramCache]: Analyzing trace with hash -192700485, now seen corresponding path program 1 times [2018-11-07 14:49:24,306 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:49:24,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:24,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:49:24,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:24,357 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:49:24,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:49:24,832 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 14:49:24,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:49:24,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:49:24,835 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:49:24,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:49:24,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:49:24,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:49:24,861 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 14:49:38,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:49:38,258 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-11-07 14:49:38,268 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:49:38,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-11-07 14:49:38,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:49:38,323 INFO L225 Difference]: With dead ends: 3968 [2018-11-07 14:49:38,325 INFO L226 Difference]: Without dead ends: 2842 [2018-11-07 14:49:38,343 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 14:49:38,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-11-07 14:49:38,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-11-07 14:49:38,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-11-07 14:49:38,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-11-07 14:49:38,530 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 49 [2018-11-07 14:49:38,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:49:38,531 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-11-07 14:49:38,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:49:38,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-11-07 14:49:38,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-11-07 14:49:38,545 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:49:38,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:38,546 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:49:38,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:49:38,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1544921282, now seen corresponding path program 1 times [2018-11-07 14:49:38,547 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:49:38,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:38,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:49:38,549 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:38,549 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:49:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:49:38,866 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:49:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:49:38,899 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:49:38,899 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:49:38,900 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:49:38,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:49:38,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:49:38,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:49:38,903 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-11-07 14:49:50,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:49:50,587 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-11-07 14:49:50,588 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:49:50,588 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-11-07 14:49:50,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:49:50,612 INFO L225 Difference]: With dead ends: 5673 [2018-11-07 14:49:50,612 INFO L226 Difference]: Without dead ends: 3698 [2018-11-07 14:49:50,620 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:49:50,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-11-07 14:49:50,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-11-07 14:49:50,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-11-07 14:49:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-11-07 14:49:50,737 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 119 [2018-11-07 14:49:50,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:49:50,738 INFO L480 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-11-07 14:49:50,738 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:49:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-11-07 14:49:50,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-07 14:49:50,750 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:49:50,750 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:49:50,750 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:49:50,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:49:50,754 INFO L82 PathProgramCache]: Analyzing trace with hash 745803618, now seen corresponding path program 1 times [2018-11-07 14:49:50,754 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:49:50,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:50,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:49:50,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:49:50,757 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:49:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:49:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:49:50,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:49:50,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:49:50,965 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:49:50,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:49:50,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:49:50,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:49:50,967 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-11-07 14:49:59,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:49:59,946 INFO L93 Difference]: Finished difference Result 10955 states and 17866 transitions. [2018-11-07 14:49:59,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:49:59,946 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-11-07 14:49:59,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:49:59,985 INFO L225 Difference]: With dead ends: 10955 [2018-11-07 14:49:59,986 INFO L226 Difference]: Without dead ends: 7274 [2018-11-07 14:50:00,000 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:50:00,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2018-11-07 14:50:00,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7167. [2018-11-07 14:50:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7167 states. [2018-11-07 14:50:00,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 10519 transitions. [2018-11-07 14:50:00,198 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 10519 transitions. Word has length 121 [2018-11-07 14:50:00,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:50:00,198 INFO L480 AbstractCegarLoop]: Abstraction has 7167 states and 10519 transitions. [2018-11-07 14:50:00,198 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:50:00,198 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 10519 transitions. [2018-11-07 14:50:00,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-11-07 14:50:00,206 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:50:00,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:50:00,207 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:50:00,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:50:00,208 INFO L82 PathProgramCache]: Analyzing trace with hash -2075646886, now seen corresponding path program 1 times [2018-11-07 14:50:00,208 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:50:00,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:50:00,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:50:00,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:50:00,209 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:50:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:50:00,496 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:50:00,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:50:00,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:50:00,497 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:50:00,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:50:00,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:50:00,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:50:00,499 INFO L87 Difference]: Start difference. First operand 7167 states and 10519 transitions. Second operand 4 states. [2018-11-07 14:50:09,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:50:09,187 INFO L93 Difference]: Finished difference Result 27645 states and 43286 transitions. [2018-11-07 14:50:09,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:50:09,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2018-11-07 14:50:09,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:50:09,304 INFO L225 Difference]: With dead ends: 27645 [2018-11-07 14:50:09,305 INFO L226 Difference]: Without dead ends: 20484 [2018-11-07 14:50:09,352 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 14:50:09,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20484 states. [2018-11-07 14:50:09,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20484 to 20445. [2018-11-07 14:50:09,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20445 states. [2018-11-07 14:50:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20445 states to 20445 states and 29105 transitions. [2018-11-07 14:50:09,859 INFO L78 Accepts]: Start accepts. Automaton has 20445 states and 29105 transitions. Word has length 165 [2018-11-07 14:50:09,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:50:09,859 INFO L480 AbstractCegarLoop]: Abstraction has 20445 states and 29105 transitions. [2018-11-07 14:50:09,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:50:09,860 INFO L276 IsEmpty]: Start isEmpty. Operand 20445 states and 29105 transitions. [2018-11-07 14:50:09,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-07 14:50:09,863 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:50:09,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:50:09,863 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:50:09,863 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:50:09,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1150006652, now seen corresponding path program 1 times [2018-11-07 14:50:09,864 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:50:09,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:50:09,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:50:09,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:50:09,865 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:50:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:50:10,125 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:50:10,195 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:50:10,195 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:50:10,195 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:50:10,195 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:50:10,196 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:50:10,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:50:10,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:50:10,198 INFO L87 Difference]: Start difference. First operand 20445 states and 29105 transitions. Second operand 3 states. [2018-11-07 14:50:17,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:50:17,426 INFO L93 Difference]: Finished difference Result 58930 states and 88518 transitions. [2018-11-07 14:50:17,427 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:50:17,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2018-11-07 14:50:17,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:50:17,588 INFO L225 Difference]: With dead ends: 58930 [2018-11-07 14:50:17,589 INFO L226 Difference]: Without dead ends: 38491 [2018-11-07 14:50:17,672 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 14:50:17,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38491 states. [2018-11-07 14:50:18,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38491 to 38484. [2018-11-07 14:50:18,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38484 states. [2018-11-07 14:50:18,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38484 states to 38484 states and 54005 transitions. [2018-11-07 14:50:18,682 INFO L78 Accepts]: Start accepts. Automaton has 38484 states and 54005 transitions. Word has length 170 [2018-11-07 14:50:18,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:50:18,683 INFO L480 AbstractCegarLoop]: Abstraction has 38484 states and 54005 transitions. [2018-11-07 14:50:18,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:50:18,683 INFO L276 IsEmpty]: Start isEmpty. Operand 38484 states and 54005 transitions. [2018-11-07 14:50:18,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-11-07 14:50:18,736 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:50:18,736 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:50:18,736 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:50:18,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:50:18,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1475529496, now seen corresponding path program 1 times [2018-11-07 14:50:18,737 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:50:18,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:50:18,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:50:18,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:50:18,739 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:50:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:50:19,224 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:50:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 85 proven. 23 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-11-07 14:50:19,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:50:19,806 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:50:19,808 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 394 with the following transitions: [2018-11-07 14:50:19,810 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2919], [2921], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3409], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3525], [3529], [3533], [3537], [3541], [3545], [3556], [3560], [3564], [3568], [3572], [3576], [3580], [3591], [3595], [3599], [3603], [3614], [3618], [3622], [3626], [3630], [3634], [3638], [3642], [3646], [3650], [3654], [3658], [3662], [3666], [3670], [3674], [3678], [3682], [3686], [3690], [3694], [3698], [3709], [3713], [3717], [3721], [3725], [3729], [3733], [3737], [3741], [3745], [3749], [3753], [3757], [3768], [3772], [3776], [3780], [3784], [3788], [3792], [3796], [3800], [3804], [3807], [3812], [3814], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 14:50:19,872 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:50:19,872 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:50:21,246 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:50:22,848 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:50:22,849 INFO L272 AbstractInterpreter]: Visited 220 different actions 648 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 14:50:22,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:50:22,894 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:50:24,021 INFO L227 lantSequenceWeakener]: Weakened 388 states. On average, predicates are now at 71.1% of their original sizes. [2018-11-07 14:50:24,021 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:50:24,628 INFO L415 sIntCurrentIteration]: We unified 392 AI predicates to 392 [2018-11-07 14:50:24,628 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:50:24,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:50:24,630 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-07 14:50:24,630 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:50:24,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 14:50:24,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 14:50:24,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-07 14:50:24,631 INFO L87 Difference]: Start difference. First operand 38484 states and 54005 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown