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/Problem11_label19_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:27:58,059 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:27:58,061 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:27:58,080 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:27:58,080 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:27:58,083 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:27:58,085 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:27:58,088 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:27:58,090 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:27:58,092 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:27:58,094 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:27:58,095 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:27:58,096 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:27:58,098 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:27:58,105 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:27:58,109 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:27:58,111 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:27:58,115 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:27:58,118 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:27:58,123 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:27:58,125 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:27:58,126 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:27:58,131 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:27:58,131 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:27:58,131 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:27:58,133 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:27:58,136 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:27:58,137 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:27:58,138 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:27:58,141 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:27:58,141 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:27:58,142 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:27:58,143 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:27:58,143 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:27:58,144 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:27:58,146 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:27:58,146 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 14:27:58,172 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:27:58,173 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:27:58,175 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:27:58,175 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:27:58,175 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:27:58,175 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:27:58,176 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:27:58,176 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:27:58,176 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:27:58,176 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:27:58,177 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:27:58,177 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:27:58,178 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:27:58,178 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:27:58,179 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:27:58,179 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:27:58,179 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:27:58,179 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:27:58,179 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:27:58,179 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:27:58,181 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:27:58,182 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:27:58,182 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:27:58,182 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:27:58,182 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:27:58,183 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:27:58,183 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:27:58,183 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:27:58,183 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:27:58,183 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:27:58,184 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:27:58,184 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:27:58,184 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:27:58,184 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:27:58,253 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:27:58,268 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:27:58,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:27:58,275 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:27:58,275 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:27:58,276 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label19_true-unreach-call.c [2018-11-07 14:27:58,349 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74d409051/caee078b76cc4f94b35c745b4635b298/FLAGd47bc5bb9 [2018-11-07 14:27:59,034 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:27:59,035 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label19_true-unreach-call.c [2018-11-07 14:27:59,054 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74d409051/caee078b76cc4f94b35c745b4635b298/FLAGd47bc5bb9 [2018-11-07 14:27:59,072 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74d409051/caee078b76cc4f94b35c745b4635b298 [2018-11-07 14:27:59,086 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:27:59,088 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:27:59,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:27:59,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:27:59,095 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:27:59,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:27:59" (1/1) ... [2018-11-07 14:27:59,100 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ade47ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:27:59, skipping insertion in model container [2018-11-07 14:27:59,100 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:27:59" (1/1) ... [2018-11-07 14:27:59,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:27:59,200 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:27:59,954 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:27:59,960 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:28:00,178 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:28:00,200 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:28:00,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:00 WrapperNode [2018-11-07 14:28:00,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:28:00,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:28:00,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:28:00,202 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:28:00,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:00" (1/1) ... [2018-11-07 14:28:00,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:00" (1/1) ... [2018-11-07 14:28:00,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:28:00,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:28:00,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:28:00,366 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:28:00,378 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:00" (1/1) ... [2018-11-07 14:28:00,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:00" (1/1) ... [2018-11-07 14:28:00,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:00" (1/1) ... [2018-11-07 14:28:00,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:00" (1/1) ... [2018-11-07 14:28:00,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:00" (1/1) ... [2018-11-07 14:28:00,480 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:00" (1/1) ... [2018-11-07 14:28:00,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:00" (1/1) ... [2018-11-07 14:28:00,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:28:00,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:28:00,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:28:00,502 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:28:00,503 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:00" (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 14:28:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:28:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:28:00,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:28:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:28:00,590 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:28:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:28:00,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:28:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:28:00,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:28:05,380 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:28:05,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:28:05 BoogieIcfgContainer [2018-11-07 14:28:05,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:28:05,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:28:05,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:28:05,386 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:28:05,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:27:59" (1/3) ... [2018-11-07 14:28:05,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95a5357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:28:05, skipping insertion in model container [2018-11-07 14:28:05,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:28:00" (2/3) ... [2018-11-07 14:28:05,389 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95a5357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:28:05, skipping insertion in model container [2018-11-07 14:28:05,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:28:05" (3/3) ... [2018-11-07 14:28:05,391 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label19_true-unreach-call.c [2018-11-07 14:28:05,402 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:28:05,412 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:28:05,432 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:28:05,474 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:28:05,474 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:28:05,474 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:28:05,474 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:28:05,474 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:28:05,475 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:28:05,475 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:28:05,475 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:28:05,507 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 14:28:05,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-11-07 14:28:05,518 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:28:05,519 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:28:05,522 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:28:05,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:28:05,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1747963281, now seen corresponding path program 1 times [2018-11-07 14:28:05,532 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:28:05,596 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:28:05,596 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:28:05,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:28:05,597 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:28:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:28:06,171 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 14:28:06,174 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:28:06,174 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:28:06,174 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:28:06,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:28:06,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:28:06,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:28:06,200 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-11-07 14:28:09,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:28:09,581 INFO L93 Difference]: Finished difference Result 982 states and 1758 transitions. [2018-11-07 14:28:09,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:28:09,583 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2018-11-07 14:28:09,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:28:09,608 INFO L225 Difference]: With dead ends: 982 [2018-11-07 14:28:09,608 INFO L226 Difference]: Without dead ends: 683 [2018-11-07 14:28:09,618 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 14:28:09,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2018-11-07 14:28:09,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2018-11-07 14:28:09,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2018-11-07 14:28:09,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1005 transitions. [2018-11-07 14:28:09,741 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1005 transitions. Word has length 63 [2018-11-07 14:28:09,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:28:09,742 INFO L480 AbstractCegarLoop]: Abstraction has 683 states and 1005 transitions. [2018-11-07 14:28:09,742 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:28:09,743 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1005 transitions. [2018-11-07 14:28:09,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-07 14:28:09,757 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:28:09,758 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 14:28:09,758 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:28:09,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:28:09,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1450662836, now seen corresponding path program 1 times [2018-11-07 14:28:09,760 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:28:09,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:28:09,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:28:09,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:28:09,763 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:28:09,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:28:10,346 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:28:10,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:28:10,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-07 14:28:10,347 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:28:10,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:28:10,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:28:10,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:28:10,350 INFO L87 Difference]: Start difference. First operand 683 states and 1005 transitions. Second operand 7 states. [2018-11-07 14:28:15,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:28:15,361 INFO L93 Difference]: Finished difference Result 1975 states and 2980 transitions. [2018-11-07 14:28:15,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 14:28:15,362 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2018-11-07 14:28:15,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:28:15,377 INFO L225 Difference]: With dead ends: 1975 [2018-11-07 14:28:15,377 INFO L226 Difference]: Without dead ends: 1298 [2018-11-07 14:28:15,382 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-11-07 14:28:15,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2018-11-07 14:28:15,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1247. [2018-11-07 14:28:15,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1247 states. [2018-11-07 14:28:15,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1247 states to 1247 states and 1784 transitions. [2018-11-07 14:28:15,476 INFO L78 Accepts]: Start accepts. Automaton has 1247 states and 1784 transitions. Word has length 137 [2018-11-07 14:28:15,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:28:15,477 INFO L480 AbstractCegarLoop]: Abstraction has 1247 states and 1784 transitions. [2018-11-07 14:28:15,477 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 14:28:15,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1247 states and 1784 transitions. [2018-11-07 14:28:15,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-07 14:28:15,491 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:28:15,491 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:28:15,491 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:28:15,496 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:28:15,497 INFO L82 PathProgramCache]: Analyzing trace with hash 507062389, now seen corresponding path program 1 times [2018-11-07 14:28:15,497 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:28:15,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:28:15,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:28:15,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:28:15,498 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:28:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:28:15,802 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:28:15,802 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:28:15,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:28:15,803 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:28:15,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:28:15,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:28:15,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:28:15,804 INFO L87 Difference]: Start difference. First operand 1247 states and 1784 transitions. Second operand 4 states. [2018-11-07 14:28:19,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:28:19,540 INFO L93 Difference]: Finished difference Result 4504 states and 6772 transitions. [2018-11-07 14:28:19,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:28:19,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 195 [2018-11-07 14:28:19,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:28:19,567 INFO L225 Difference]: With dead ends: 4504 [2018-11-07 14:28:19,567 INFO L226 Difference]: Without dead ends: 3263 [2018-11-07 14:28:19,582 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:28:19,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3263 states. [2018-11-07 14:28:19,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3263 to 3234. [2018-11-07 14:28:19,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3234 states. [2018-11-07 14:28:19,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3234 states to 3234 states and 4524 transitions. [2018-11-07 14:28:19,720 INFO L78 Accepts]: Start accepts. Automaton has 3234 states and 4524 transitions. Word has length 195 [2018-11-07 14:28:19,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:28:19,722 INFO L480 AbstractCegarLoop]: Abstraction has 3234 states and 4524 transitions. [2018-11-07 14:28:19,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:28:19,722 INFO L276 IsEmpty]: Start isEmpty. Operand 3234 states and 4524 transitions. [2018-11-07 14:28:19,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-07 14:28:19,734 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:28:19,734 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 14:28:19,735 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:28:19,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:28:19,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1163566050, now seen corresponding path program 1 times [2018-11-07 14:28:19,735 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:28:19,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:28:19,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:28:19,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:28:19,737 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:28:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:28:20,092 WARN L179 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:28:20,308 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 112 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 14:28:20,309 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:28:20,309 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:28:20,310 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-11-07 14:28:20,313 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [405], [407], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [510], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 14:28:20,376 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:28:20,377 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:28:21,093 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 14:28:21,650 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:28:21,652 INFO L272 AbstractInterpreter]: Visited 79 different actions 79 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 14:28:21,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:28:21,704 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:28:22,713 INFO L227 lantSequenceWeakener]: Weakened 201 states. On average, predicates are now at 73.79% of their original sizes. [2018-11-07 14:28:22,713 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:28:23,085 INFO L415 sIntCurrentIteration]: We unified 209 AI predicates to 209 [2018-11-07 14:28:23,085 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:28:23,087 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:28:23,087 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 14:28:23,087 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:28:23,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 14:28:23,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 14:28:23,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 14:28:23,089 INFO L87 Difference]: Start difference. First operand 3234 states and 4524 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown