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/Problem17_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 15:03:25,064 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 15:03:25,066 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 15:03:25,078 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 15:03:25,079 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 15:03:25,080 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 15:03:25,081 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 15:03:25,083 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 15:03:25,085 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 15:03:25,086 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 15:03:25,087 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 15:03:25,087 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 15:03:25,088 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 15:03:25,089 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 15:03:25,090 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 15:03:25,091 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 15:03:25,092 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 15:03:25,094 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 15:03:25,096 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 15:03:25,098 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 15:03:25,099 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 15:03:25,100 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 15:03:25,103 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 15:03:25,103 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 15:03:25,103 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 15:03:25,104 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 15:03:25,105 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 15:03:25,106 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 15:03:25,107 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 15:03:25,108 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 15:03:25,109 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 15:03:25,109 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 15:03:25,110 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 15:03:25,110 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 15:03:25,111 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 15:03:25,112 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 15:03:25,112 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 15:03:25,128 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 15:03:25,129 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 15:03:25,129 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 15:03:25,130 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 15:03:25,130 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 15:03:25,130 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 15:03:25,130 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 15:03:25,130 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 15:03:25,131 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 15:03:25,131 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 15:03:25,131 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 15:03:25,131 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 15:03:25,132 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 15:03:25,132 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 15:03:25,133 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 15:03:25,133 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 15:03:25,133 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 15:03:25,133 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 15:03:25,133 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 15:03:25,134 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 15:03:25,134 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 15:03:25,134 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 15:03:25,134 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 15:03:25,134 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 15:03:25,135 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 15:03:25,135 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 15:03:25,135 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 15:03:25,135 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 15:03:25,135 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 15:03:25,136 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 15:03:25,136 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 15:03:25,136 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 15:03:25,136 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 15:03:25,136 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 15:03:25,180 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 15:03:25,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 15:03:25,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 15:03:25,200 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 15:03:25,200 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 15:03:25,201 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c [2018-10-27 15:03:25,262 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7216779c2/ada4807109fe4358915c53edf9cccfbe/FLAG407a1b80b [2018-10-27 15:03:25,985 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 15:03:25,986 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label58_true-unreach-call.c [2018-10-27 15:03:26,018 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7216779c2/ada4807109fe4358915c53edf9cccfbe/FLAG407a1b80b [2018-10-27 15:03:26,040 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7216779c2/ada4807109fe4358915c53edf9cccfbe [2018-10-27 15:03:26,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 15:03:26,057 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 15:03:26,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 15:03:26,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 15:03:26,066 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 15:03:26,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:03:26" (1/1) ... [2018-10-27 15:03:26,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4621111d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:26, skipping insertion in model container [2018-10-27 15:03:26,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:03:26" (1/1) ... [2018-10-27 15:03:26,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 15:03:26,192 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 15:03:27,210 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:03:27,215 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 15:03:27,628 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 15:03:27,654 INFO L193 MainTranslator]: Completed translation [2018-10-27 15:03:27,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:27 WrapperNode [2018-10-27 15:03:27,655 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 15:03:27,656 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 15:03:27,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 15:03:27,657 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 15:03:27,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:27" (1/1) ... [2018-10-27 15:03:27,731 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:27" (1/1) ... [2018-10-27 15:03:28,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 15:03:28,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 15:03:28,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 15:03:28,198 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 15:03:28,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:27" (1/1) ... [2018-10-27 15:03:28,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:27" (1/1) ... [2018-10-27 15:03:28,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:27" (1/1) ... [2018-10-27 15:03:28,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:27" (1/1) ... [2018-10-27 15:03:28,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:27" (1/1) ... [2018-10-27 15:03:28,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:27" (1/1) ... [2018-10-27 15:03:28,451 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:27" (1/1) ... [2018-10-27 15:03:28,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 15:03:28,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 15:03:28,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 15:03:28,504 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 15:03:28,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:27" (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 15:03:28,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 15:03:28,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 15:03:28,569 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 15:03:28,569 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 15:03:28,570 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 15:03:28,570 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 15:03:28,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 15:03:28,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 15:03:28,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 15:03:28,571 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 15:03:42,401 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 15:03:42,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:03:42 BoogieIcfgContainer [2018-10-27 15:03:42,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 15:03:42,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 15:03:42,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 15:03:42,411 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 15:03:42,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:03:26" (1/3) ... [2018-10-27 15:03:42,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230e247b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:03:42, skipping insertion in model container [2018-10-27 15:03:42,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:03:27" (2/3) ... [2018-10-27 15:03:42,413 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@230e247b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:03:42, skipping insertion in model container [2018-10-27 15:03:42,413 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:03:42" (3/3) ... [2018-10-27 15:03:42,416 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label58_true-unreach-call.c [2018-10-27 15:03:42,425 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 15:03:42,437 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 15:03:42,458 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 15:03:42,513 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 15:03:42,513 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 15:03:42,513 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 15:03:42,513 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 15:03:42,513 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 15:03:42,514 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 15:03:42,514 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 15:03:42,514 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 15:03:42,550 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 15:03:42,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-27 15:03:42,562 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:03:42,563 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] [2018-10-27 15:03:42,565 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:03:42,570 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:03:42,570 INFO L82 PathProgramCache]: Analyzing trace with hash -567488676, now seen corresponding path program 1 times [2018-10-27 15:03:42,572 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:03:42,626 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:03:42,626 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:03:42,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:03:42,627 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:03:42,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:03:43,083 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-27 15:03:43,111 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 15:03:43,113 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:03:43,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 15:03:43,114 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:03:43,122 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 15:03:43,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 15:03:43,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 15:03:43,143 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 15:03:54,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:03:54,785 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-10-27 15:03:54,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 15:03:54,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2018-10-27 15:03:54,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:03:54,832 INFO L225 Difference]: With dead ends: 2162 [2018-10-27 15:03:54,833 INFO L226 Difference]: Without dead ends: 1552 [2018-10-27 15:03:54,845 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 15:03:54,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-10-27 15:03:54,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-10-27 15:03:54,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-10-27 15:03:54,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-10-27 15:03:55,000 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 52 [2018-10-27 15:03:55,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:03:55,001 INFO L481 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-10-27 15:03:55,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 15:03:55,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-10-27 15:03:55,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-27 15:03:55,011 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:03:55,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:03:55,012 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:03:55,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:03:55,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1938169354, now seen corresponding path program 1 times [2018-10-27 15:03:55,012 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:03:55,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:03:55,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:03:55,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:03:55,014 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:03:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:03:55,324 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:03:55,324 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:03:55,324 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:03:55,325 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:03:55,327 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:03:55,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:03:55,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:03:55,327 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-10-27 15:04:13,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:04:13,649 INFO L93 Difference]: Finished difference Result 5786 states and 10682 transitions. [2018-10-27 15:04:13,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:04:13,650 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-10-27 15:04:13,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:04:13,685 INFO L225 Difference]: With dead ends: 5786 [2018-10-27 15:04:13,685 INFO L226 Difference]: Without dead ends: 4267 [2018-10-27 15:04:13,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-27 15:04:13,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4267 states. [2018-10-27 15:04:13,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4267 to 4243. [2018-10-27 15:04:13,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4243 states. [2018-10-27 15:04:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4243 states to 4243 states and 6361 transitions. [2018-10-27 15:04:13,847 INFO L78 Accepts]: Start accepts. Automaton has 4243 states and 6361 transitions. Word has length 131 [2018-10-27 15:04:13,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:04:13,849 INFO L481 AbstractCegarLoop]: Abstraction has 4243 states and 6361 transitions. [2018-10-27 15:04:13,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:04:13,850 INFO L276 IsEmpty]: Start isEmpty. Operand 4243 states and 6361 transitions. [2018-10-27 15:04:13,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-27 15:04:13,860 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:04:13,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:04:13,860 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:04:13,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:04:13,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1881840966, now seen corresponding path program 1 times [2018-10-27 15:04:13,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:04:13,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:04:13,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:04:13,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:04:13,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:04:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:04:14,137 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 15:04:14,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 15:04:14,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 15:04:14,138 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:04:14,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 15:04:14,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 15:04:14,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 15:04:14,139 INFO L87 Difference]: Start difference. First operand 4243 states and 6361 transitions. Second operand 6 states. [2018-10-27 15:04:21,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 15:04:21,689 INFO L93 Difference]: Finished difference Result 12717 states and 20754 transitions. [2018-10-27 15:04:21,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 15:04:21,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-10-27 15:04:21,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 15:04:21,756 INFO L225 Difference]: With dead ends: 12717 [2018-10-27 15:04:21,756 INFO L226 Difference]: Without dead ends: 8480 [2018-10-27 15:04:21,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:04:21,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8480 states. [2018-10-27 15:04:22,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8480 to 8395. [2018-10-27 15:04:22,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8395 states. [2018-10-27 15:04:22,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8395 states to 8395 states and 12623 transitions. [2018-10-27 15:04:22,072 INFO L78 Accepts]: Start accepts. Automaton has 8395 states and 12623 transitions. Word has length 132 [2018-10-27 15:04:22,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 15:04:22,073 INFO L481 AbstractCegarLoop]: Abstraction has 8395 states and 12623 transitions. [2018-10-27 15:04:22,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 15:04:22,073 INFO L276 IsEmpty]: Start isEmpty. Operand 8395 states and 12623 transitions. [2018-10-27 15:04:22,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-10-27 15:04:22,080 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 15:04:22,081 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, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 15:04:22,081 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 15:04:22,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:04:22,082 INFO L82 PathProgramCache]: Analyzing trace with hash -502912620, now seen corresponding path program 1 times [2018-10-27 15:04:22,082 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 15:04:22,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:04:22,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 15:04:22,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 15:04:22,084 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 15:04:22,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 15:04:22,414 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 15:04:22,837 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 91 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-27 15:04:22,837 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 15:04:22,838 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 15:04:22,839 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 207 with the following transitions: [2018-10-27 15:04:22,841 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1026], [1028], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1239], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 15:04:22,908 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 15:04:22,908 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 15:04:23,403 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 15:04:25,936 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 15:04:25,938 INFO L272 AbstractInterpreter]: Visited 87 different actions 492 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 15:04:25,967 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 15:04:25,968 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 15:04:26,671 INFO L227 lantSequenceWeakener]: Weakened 203 states. On average, predicates are now at 75.69% of their original sizes. [2018-10-27 15:04:26,671 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 15:04:27,273 INFO L415 sIntCurrentIteration]: We unified 205 AI predicates to 205 [2018-10-27 15:04:27,273 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 15:04:27,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 15:04:27,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2018-10-27 15:04:27,274 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 15:04:27,275 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 15:04:27,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 15:04:27,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-27 15:04:27,276 INFO L87 Difference]: Start difference. First operand 8395 states and 12623 transitions. Second operand 9 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown