java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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/Problem15_label35_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 14:37:09,149 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 14:37:09,152 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 14:37:09,164 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 14:37:09,164 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 14:37:09,166 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 14:37:09,170 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 14:37:09,172 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 14:37:09,175 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 14:37:09,178 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 14:37:09,179 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 14:37:09,181 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 14:37:09,182 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 14:37:09,183 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 14:37:09,189 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 14:37:09,190 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 14:37:09,191 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 14:37:09,196 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 14:37:09,206 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 14:37:09,210 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 14:37:09,211 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 14:37:09,215 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 14:37:09,219 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 14:37:09,219 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 14:37:09,219 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 14:37:09,222 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 14:37:09,224 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 14:37:09,227 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 14:37:09,228 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 14:37:09,230 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 14:37:09,232 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 14:37:09,233 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 14:37:09,233 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 14:37:09,233 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 14:37:09,235 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 14:37:09,237 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 14:37:09,237 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 14:37:09,264 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 14:37:09,264 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 14:37:09,265 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 14:37:09,265 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 14:37:09,266 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 14:37:09,266 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 14:37:09,266 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 14:37:09,266 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 14:37:09,266 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 14:37:09,267 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 14:37:09,267 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 14:37:09,267 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 14:37:09,268 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 14:37:09,268 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 14:37:09,268 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 14:37:09,268 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 14:37:09,269 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 14:37:09,269 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 14:37:09,269 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 14:37:09,269 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 14:37:09,269 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 14:37:09,270 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 14:37:09,270 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 14:37:09,270 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 14:37:09,270 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 14:37:09,271 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 14:37:09,271 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 14:37:09,271 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 14:37:09,271 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 14:37:09,272 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 14:37:09,272 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 14:37:09,272 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 14:37:09,272 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 14:37:09,272 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 14:37:09,336 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 14:37:09,350 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 14:37:09,354 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 14:37:09,356 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 14:37:09,356 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 14:37:09,357 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label35_true-unreach-call.c [2018-10-27 14:37:09,425 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7432d4249/dfad12e0dda74be49dc33b27f43135a7/FLAGd83caca65 [2018-10-27 14:37:10,145 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 14:37:10,146 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label35_true-unreach-call.c [2018-10-27 14:37:10,169 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7432d4249/dfad12e0dda74be49dc33b27f43135a7/FLAGd83caca65 [2018-10-27 14:37:10,188 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7432d4249/dfad12e0dda74be49dc33b27f43135a7 [2018-10-27 14:37:10,203 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 14:37:10,205 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 14:37:10,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 14:37:10,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 14:37:10,211 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 14:37:10,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:37:10" (1/1) ... [2018-10-27 14:37:10,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a37ae9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:10, skipping insertion in model container [2018-10-27 14:37:10,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:37:10" (1/1) ... [2018-10-27 14:37:10,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 14:37:10,344 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 14:37:11,197 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:37:11,202 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 14:37:11,544 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 14:37:11,567 INFO L193 MainTranslator]: Completed translation [2018-10-27 14:37:11,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:11 WrapperNode [2018-10-27 14:37:11,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 14:37:11,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 14:37:11,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 14:37:11,570 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 14:37:11,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:11" (1/1) ... [2018-10-27 14:37:11,634 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:11" (1/1) ... [2018-10-27 14:37:11,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 14:37:11,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 14:37:11,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 14:37:11,938 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 14:37:11,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:11" (1/1) ... [2018-10-27 14:37:11,950 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:11" (1/1) ... [2018-10-27 14:37:11,970 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:11" (1/1) ... [2018-10-27 14:37:11,970 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:11" (1/1) ... [2018-10-27 14:37:12,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:11" (1/1) ... [2018-10-27 14:37:12,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:11" (1/1) ... [2018-10-27 14:37:12,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:11" (1/1) ... [2018-10-27 14:37:12,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 14:37:12,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 14:37:12,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 14:37:12,156 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 14:37:12,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 14:37:12,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 14:37:12,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 14:37:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 14:37:12,225 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 14:37:12,225 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 14:37:12,225 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 14:37:12,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 14:37:12,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 14:37:12,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 14:37:12,226 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 14:37:19,380 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 14:37:19,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:37:19 BoogieIcfgContainer [2018-10-27 14:37:19,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 14:37:19,383 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 14:37:19,383 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 14:37:19,387 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 14:37:19,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:37:10" (1/3) ... [2018-10-27 14:37:19,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b36af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:37:19, skipping insertion in model container [2018-10-27 14:37:19,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:37:11" (2/3) ... [2018-10-27 14:37:19,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b36af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:37:19, skipping insertion in model container [2018-10-27 14:37:19,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:37:19" (3/3) ... [2018-10-27 14:37:19,390 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label35_true-unreach-call.c [2018-10-27 14:37:19,400 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 14:37:19,409 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 14:37:19,426 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 14:37:19,470 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 14:37:19,470 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 14:37:19,470 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 14:37:19,470 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 14:37:19,470 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 14:37:19,471 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 14:37:19,471 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 14:37:19,471 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 14:37:19,516 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 14:37:19,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-27 14:37:19,525 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:37:19,526 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] [2018-10-27 14:37:19,528 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:37:19,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:37:19,535 INFO L82 PathProgramCache]: Analyzing trace with hash -524388215, now seen corresponding path program 1 times [2018-10-27 14:37:19,537 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:37:19,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:37:19,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:37:19,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:37:19,588 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:37:19,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:37:20,042 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-27 14:37:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:37:20,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:37:20,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:37:20,067 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:37:20,073 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:37:20,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:37:20,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:37:20,096 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 14:37:28,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:37:28,172 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-10-27 14:37:28,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:37:28,175 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-10-27 14:37:28,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:37:28,203 INFO L225 Difference]: With dead ends: 1558 [2018-10-27 14:37:28,204 INFO L226 Difference]: Without dead ends: 1114 [2018-10-27 14:37:28,213 INFO L605 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 [2018-10-27 14:37:28,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-10-27 14:37:28,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 759. [2018-10-27 14:37:28,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 759 states. [2018-10-27 14:37:28,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1355 transitions. [2018-10-27 14:37:28,360 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1355 transitions. Word has length 43 [2018-10-27 14:37:28,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:37:28,362 INFO L481 AbstractCegarLoop]: Abstraction has 759 states and 1355 transitions. [2018-10-27 14:37:28,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:37:28,362 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1355 transitions. [2018-10-27 14:37:28,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-10-27 14:37:28,372 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:37:28,374 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:37:28,375 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:37:28,375 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:37:28,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1605428579, now seen corresponding path program 1 times [2018-10-27 14:37:28,376 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:37:28,378 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:37:28,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:37:28,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:37:28,380 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:37:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:37:28,678 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:37:28,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:37:28,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 14:37:28,679 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:37:28,681 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 14:37:28,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 14:37:28,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 14:37:28,683 INFO L87 Difference]: Start difference. First operand 759 states and 1355 transitions. Second operand 4 states. [2018-10-27 14:37:37,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:37:37,388 INFO L93 Difference]: Finished difference Result 2759 states and 5140 transitions. [2018-10-27 14:37:37,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 14:37:37,389 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 113 [2018-10-27 14:37:37,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:37:37,404 INFO L225 Difference]: With dead ends: 2759 [2018-10-27 14:37:37,404 INFO L226 Difference]: Without dead ends: 2006 [2018-10-27 14:37:37,412 INFO L605 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 [2018-10-27 14:37:37,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2018-10-27 14:37:37,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 2003. [2018-10-27 14:37:37,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2003 states. [2018-10-27 14:37:37,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2003 states to 2003 states and 3223 transitions. [2018-10-27 14:37:37,494 INFO L78 Accepts]: Start accepts. Automaton has 2003 states and 3223 transitions. Word has length 113 [2018-10-27 14:37:37,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:37:37,495 INFO L481 AbstractCegarLoop]: Abstraction has 2003 states and 3223 transitions. [2018-10-27 14:37:37,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 14:37:37,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2003 states and 3223 transitions. [2018-10-27 14:37:37,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-10-27 14:37:37,503 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:37:37,503 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 14:37:37,506 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:37:37,506 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:37:37,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1328217001, now seen corresponding path program 1 times [2018-10-27 14:37:37,506 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:37:37,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:37:37,508 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:37:37,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:37:37,509 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:37:37,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:37:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 14:37:37,688 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 14:37:37,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 14:37:37,689 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:37:37,689 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 14:37:37,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 14:37:37,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 14:37:37,690 INFO L87 Difference]: Start difference. First operand 2003 states and 3223 transitions. Second operand 5 states. [2018-10-27 14:37:46,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 14:37:46,951 INFO L93 Difference]: Finished difference Result 6005 states and 9840 transitions. [2018-10-27 14:37:46,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-27 14:37:46,952 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 130 [2018-10-27 14:37:46,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 14:37:46,979 INFO L225 Difference]: With dead ends: 6005 [2018-10-27 14:37:46,980 INFO L226 Difference]: Without dead ends: 4008 [2018-10-27 14:37:46,993 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 14:37:46,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4008 states. [2018-10-27 14:37:47,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4008 to 3963. [2018-10-27 14:37:47,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3963 states. [2018-10-27 14:37:47,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3963 states to 3963 states and 5711 transitions. [2018-10-27 14:37:47,117 INFO L78 Accepts]: Start accepts. Automaton has 3963 states and 5711 transitions. Word has length 130 [2018-10-27 14:37:47,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 14:37:47,117 INFO L481 AbstractCegarLoop]: Abstraction has 3963 states and 5711 transitions. [2018-10-27 14:37:47,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 14:37:47,117 INFO L276 IsEmpty]: Start isEmpty. Operand 3963 states and 5711 transitions. [2018-10-27 14:37:47,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2018-10-27 14:37:47,127 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 14:37:47,127 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, 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, 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] [2018-10-27 14:37:47,128 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 14:37:47,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:37:47,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1256486234, now seen corresponding path program 1 times [2018-10-27 14:37:47,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 14:37:47,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:37:47,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 14:37:47,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 14:37:47,130 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 14:37:47,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 14:37:47,770 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 277 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-27 14:37:47,771 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 14:37:47,771 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 14:37:47,772 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 413 with the following transitions: [2018-10-27 14:37:47,774 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [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], [317], [319], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [617], [618], [622], [626], [630], [641], [645], [648], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [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], [1191], [1202], [1206], [1209], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 14:37:47,832 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 14:37:47,832 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 14:37:48,316 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 14:37:49,144 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 14:37:49,146 INFO L272 AbstractInterpreter]: Visited 207 different actions 207 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 14:37:49,192 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 14:37:49,192 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 14:37:50,599 INFO L227 lantSequenceWeakener]: Weakened 400 states. On average, predicates are now at 77.6% of their original sizes. [2018-10-27 14:37:50,600 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 14:37:50,982 INFO L415 sIntCurrentIteration]: We unified 411 AI predicates to 411 [2018-10-27 14:37:50,983 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 14:37:50,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 14:37:50,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 14:37:50,984 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 14:37:50,985 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 14:37:50,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 14:37:50,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 14:37:50,986 INFO L87 Difference]: Start difference. First operand 3963 states and 5711 transitions. Second operand 7 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown