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/Problem15_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 15:06:50,213 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 15:06:50,215 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 15:06:50,227 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 15:06:50,228 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 15:06:50,229 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 15:06:50,230 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 15:06:50,232 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 15:06:50,234 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 15:06:50,235 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 15:06:50,235 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 15:06:50,236 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 15:06:50,237 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 15:06:50,238 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 15:06:50,239 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 15:06:50,240 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 15:06:50,241 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 15:06:50,242 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 15:06:50,244 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 15:06:50,246 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 15:06:50,247 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 15:06:50,249 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 15:06:50,251 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 15:06:50,251 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 15:06:50,252 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 15:06:50,252 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 15:06:50,253 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 15:06:50,254 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 15:06:50,255 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 15:06:50,256 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 15:06:50,256 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 15:06:50,257 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 15:06:50,257 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 15:06:50,258 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 15:06:50,259 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 15:06:50,260 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 15:06:50,260 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 15:06:50,285 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 15:06:50,286 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 15:06:50,287 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 15:06:50,287 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 15:06:50,287 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 15:06:50,287 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 15:06:50,287 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 15:06:50,288 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 15:06:50,288 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 15:06:50,288 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 15:06:50,288 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 15:06:50,288 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 15:06:50,290 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 15:06:50,290 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 15:06:50,290 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 15:06:50,290 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 15:06:50,291 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 15:06:50,291 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 15:06:50,291 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 15:06:50,291 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 15:06:50,291 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 15:06:50,291 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 15:06:50,293 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 15:06:50,293 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 15:06:50,294 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 15:06:50,294 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 15:06:50,294 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 15:06:50,294 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 15:06:50,294 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 15:06:50,295 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 15:06:50,295 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 15:06:50,295 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 15:06:50,295 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 15:06:50,295 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 15:06:50,371 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 15:06:50,390 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 15:06:50,395 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 15:06:50,397 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 15:06:50,397 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 15:06:50,398 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label10_true-unreach-call.c [2018-11-07 15:06:50,466 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509874850/f7488285b2f245fd85a4145213e03c6c/FLAG44ed171e1 [2018-11-07 15:06:51,239 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 15:06:51,240 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label10_true-unreach-call.c [2018-11-07 15:06:51,262 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509874850/f7488285b2f245fd85a4145213e03c6c/FLAG44ed171e1 [2018-11-07 15:06:51,278 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/509874850/f7488285b2f245fd85a4145213e03c6c [2018-11-07 15:06:51,290 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 15:06:51,292 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 15:06:51,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 15:06:51,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 15:06:51,297 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 15:06:51,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:06:51" (1/1) ... [2018-11-07 15:06:51,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56927dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:51, skipping insertion in model container [2018-11-07 15:06:51,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:06:51" (1/1) ... [2018-11-07 15:06:51,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 15:06:51,427 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 15:06:52,259 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:06:52,266 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 15:06:52,562 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 15:06:52,587 INFO L193 MainTranslator]: Completed translation [2018-11-07 15:06:52,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:52 WrapperNode [2018-11-07 15:06:52,588 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 15:06:52,589 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 15:06:52,589 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 15:06:52,589 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 15:06:52,600 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:52" (1/1) ... [2018-11-07 15:06:52,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:52" (1/1) ... [2018-11-07 15:06:52,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 15:06:52,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 15:06:52,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 15:06:52,815 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 15:06:52,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:52" (1/1) ... [2018-11-07 15:06:52,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:52" (1/1) ... [2018-11-07 15:06:52,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:52" (1/1) ... [2018-11-07 15:06:52,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:52" (1/1) ... [2018-11-07 15:06:52,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:52" (1/1) ... [2018-11-07 15:06:52,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:52" (1/1) ... [2018-11-07 15:06:52,982 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:52" (1/1) ... [2018-11-07 15:06:53,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 15:06:53,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 15:06:53,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 15:06:53,012 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 15:06:53,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:52" (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 15:06:53,083 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 15:06:53,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 15:06:53,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 15:06:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 15:06:53,084 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 15:06:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 15:06:53,084 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 15:06:53,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 15:06:53,085 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 15:06:53,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 15:06:53,085 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 15:06:59,554 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 15:06:59,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:06:59 BoogieIcfgContainer [2018-11-07 15:06:59,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 15:06:59,557 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 15:06:59,557 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 15:06:59,560 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 15:06:59,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:06:51" (1/3) ... [2018-11-07 15:06:59,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e418016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:06:59, skipping insertion in model container [2018-11-07 15:06:59,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:06:52" (2/3) ... [2018-11-07 15:06:59,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e418016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:06:59, skipping insertion in model container [2018-11-07 15:06:59,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:06:59" (3/3) ... [2018-11-07 15:06:59,564 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label10_true-unreach-call.c [2018-11-07 15:06:59,573 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 15:06:59,582 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 15:06:59,597 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 15:06:59,639 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 15:06:59,640 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 15:06:59,640 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 15:06:59,640 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 15:06:59,640 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 15:06:59,641 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 15:06:59,641 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 15:06:59,641 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 15:06:59,676 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-07 15:06:59,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-07 15:06:59,685 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:06:59,686 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] [2018-11-07 15:06:59,688 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:06:59,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:06:59,695 INFO L82 PathProgramCache]: Analyzing trace with hash -98869727, now seen corresponding path program 1 times [2018-11-07 15:06:59,698 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:06:59,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:06:59,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:06:59,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:06:59,748 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:06:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:07:00,152 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-07 15:07:00,162 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 15:07:00,165 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:07:00,165 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:07:00,165 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:07:00,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:07:00,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:07:00,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:07:00,194 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-07 15:07:07,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:07:07,164 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-07 15:07:07,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:07:07,167 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-11-07 15:07:07,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:07:07,199 INFO L225 Difference]: With dead ends: 1558 [2018-11-07 15:07:07,199 INFO L226 Difference]: Without dead ends: 1114 [2018-11-07 15:07:07,213 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 15:07:07,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-07 15:07:07,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-11-07 15:07:07,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-11-07 15:07:07,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-11-07 15:07:07,354 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 41 [2018-11-07 15:07:07,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:07:07,355 INFO L480 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-11-07 15:07:07,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:07:07,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-11-07 15:07:07,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-07 15:07:07,370 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:07:07,370 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:07:07,371 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:07:07,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:07:07,371 INFO L82 PathProgramCache]: Analyzing trace with hash -2025595060, now seen corresponding path program 1 times [2018-11-07 15:07:07,372 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:07:07,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:07:07,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:07:07,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:07:07,376 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:07:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:07:07,727 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:07:07,728 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:07:07,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 15:07:07,728 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:07:07,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 15:07:07,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 15:07:07,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 15:07:07,731 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-11-07 15:07:13,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:07:13,080 INFO L93 Difference]: Finished difference Result 3246 states and 5588 transitions. [2018-11-07 15:07:13,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 15:07:13,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-11-07 15:07:13,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:07:13,103 INFO L225 Difference]: With dead ends: 3246 [2018-11-07 15:07:13,103 INFO L226 Difference]: Without dead ends: 2161 [2018-11-07 15:07:13,111 INFO L604 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 [2018-11-07 15:07:13,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2018-11-07 15:07:13,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2114. [2018-11-07 15:07:13,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-11-07 15:07:13,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-11-07 15:07:13,222 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 114 [2018-11-07 15:07:13,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:07:13,223 INFO L480 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-11-07 15:07:13,223 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 15:07:13,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-11-07 15:07:13,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-07 15:07:13,229 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:07:13,229 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:07:13,229 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:07:13,230 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:07:13,230 INFO L82 PathProgramCache]: Analyzing trace with hash 565874524, now seen corresponding path program 1 times [2018-11-07 15:07:13,230 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:07:13,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:07:13,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:07:13,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:07:13,234 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:07:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:07:13,477 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:07:13,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 15:07:13,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 15:07:13,478 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:07:13,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 15:07:13,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 15:07:13,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 15:07:13,480 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 4 states. [2018-11-07 15:07:18,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 15:07:18,447 INFO L93 Difference]: Finished difference Result 7952 states and 12482 transitions. [2018-11-07 15:07:18,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 15:07:18,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2018-11-07 15:07:18,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 15:07:18,499 INFO L225 Difference]: With dead ends: 7952 [2018-11-07 15:07:18,500 INFO L226 Difference]: Without dead ends: 5844 [2018-11-07 15:07:18,528 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 15:07:18,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5844 states. [2018-11-07 15:07:18,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5844 to 5841. [2018-11-07 15:07:18,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5841 states. [2018-11-07 15:07:18,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5841 states to 5841 states and 8212 transitions. [2018-11-07 15:07:18,747 INFO L78 Accepts]: Start accepts. Automaton has 5841 states and 8212 transitions. Word has length 122 [2018-11-07 15:07:18,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 15:07:18,749 INFO L480 AbstractCegarLoop]: Abstraction has 5841 states and 8212 transitions. [2018-11-07 15:07:18,750 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 15:07:18,750 INFO L276 IsEmpty]: Start isEmpty. Operand 5841 states and 8212 transitions. [2018-11-07 15:07:18,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-07 15:07:18,755 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 15:07:18,755 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:07:18,755 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 15:07:18,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:07:18,760 INFO L82 PathProgramCache]: Analyzing trace with hash -2101547042, now seen corresponding path program 1 times [2018-11-07 15:07:18,760 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 15:07:18,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:07:18,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 15:07:18,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 15:07:18,762 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 15:07:18,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 15:07:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 15:07:19,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 15:07:19,390 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 15:07:19,392 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 154 with the following transitions: [2018-11-07 15:07:19,394 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], [301], [303], [306], [314], [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], [618], [622], [626], [630], [641], [645], [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], [762], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-07 15:07:19,443 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 15:07:19,444 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 15:07:20,037 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 15:07:20,039 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 15:07:20,079 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 15:07:20,080 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 15:07:20,532 INFO L227 lantSequenceWeakener]: Weakened 147 states. On average, predicates are now at 77.92% of their original sizes. [2018-11-07 15:07:20,533 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 15:07:21,022 INFO L415 sIntCurrentIteration]: We unified 152 AI predicates to 152 [2018-11-07 15:07:21,022 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 15:07:21,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 15:07:21,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2018-11-07 15:07:21,024 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 15:07:21,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 15:07:21,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 15:07:21,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 15:07:21,025 INFO L87 Difference]: Start difference. First operand 5841 states and 8212 transitions. Second operand 8 states. [2018-11-07 15:07:23,908 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown