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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label36_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:25:03,426 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:25:03,428 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:25:03,443 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:25:03,443 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:25:03,444 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:25:03,446 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:25:03,448 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:25:03,449 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:25:03,450 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:25:03,451 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:25:03,452 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:25:03,453 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:25:03,454 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:25:03,455 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:25:03,456 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:25:03,457 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:25:03,459 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:25:03,461 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:25:03,463 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:25:03,464 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:25:03,465 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:25:03,468 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:25:03,468 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:25:03,469 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:25:03,470 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:25:03,471 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:25:03,472 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:25:03,472 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:25:03,474 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:25:03,474 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:25:03,475 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:25:03,475 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:25:03,475 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:25:03,476 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:25:03,477 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:25:03,477 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:25:03,504 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:25:03,504 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:25:03,506 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:25:03,506 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:25:03,506 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:25:03,506 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:25:03,507 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:25:03,507 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:25:03,507 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:25:03,508 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:25:03,508 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:25:03,508 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:25:03,509 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:25:03,509 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:25:03,509 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:25:03,509 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:25:03,509 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:25:03,510 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:25:03,510 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:25:03,510 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:25:03,510 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:25:03,510 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:25:03,510 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:25:03,512 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:25:03,512 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:25:03,513 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:25:03,513 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:25:03,513 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:25:03,513 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:25:03,513 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:25:03,513 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:25:03,514 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:25:03,514 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:25:03,514 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:25:03,573 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:25:03,590 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:25:03,593 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:25:03,594 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:25:03,595 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:25:03,595 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label36_false-unreach-call.c [2018-10-24 18:25:03,648 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d7e75cc75/4f23da7fe8184856b84db0a21b0e301d/FLAG2328871ed [2018-10-24 18:25:04,544 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:25:04,546 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label36_false-unreach-call.c [2018-10-24 18:25:04,585 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d7e75cc75/4f23da7fe8184856b84db0a21b0e301d/FLAG2328871ed [2018-10-24 18:25:04,605 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d7e75cc75/4f23da7fe8184856b84db0a21b0e301d [2018-10-24 18:25:04,619 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:25:04,622 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:25:04,623 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:25:04,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:25:04,631 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:25:04,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:25:04" (1/1) ... [2018-10-24 18:25:04,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49bb8d53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:04, skipping insertion in model container [2018-10-24 18:25:04,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:25:04" (1/1) ... [2018-10-24 18:25:04,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:25:04,848 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:25:06,501 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:25:06,510 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:25:07,211 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:25:07,253 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:25:07,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07 WrapperNode [2018-10-24 18:25:07,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:25:07,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:25:07,256 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:25:07,256 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:25:07,266 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2018-10-24 18:25:07,333 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2018-10-24 18:25:07,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:25:07,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:25:07,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:25:07,825 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:25:07,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2018-10-24 18:25:07,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2018-10-24 18:25:07,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2018-10-24 18:25:07,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2018-10-24 18:25:08,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2018-10-24 18:25:08,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2018-10-24 18:25:08,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (1/1) ... [2018-10-24 18:25:08,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:25:08,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:25:08,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:25:08,192 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:25:08,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (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 [2018-10-24 18:25:08,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:25:08,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:25:08,259 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 18:25:08,259 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 18:25:08,260 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:25:08,260 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:25:08,260 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:25:08,260 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:25:08,260 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:25:08,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:25:08,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:25:08,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:25:08,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:25:08,262 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:25:18,797 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:25:18,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:25:18 BoogieIcfgContainer [2018-10-24 18:25:18,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:25:18,799 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:25:18,799 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:25:18,802 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:25:18,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:25:04" (1/3) ... [2018-10-24 18:25:18,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af55ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:25:18, skipping insertion in model container [2018-10-24 18:25:18,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:25:07" (2/3) ... [2018-10-24 18:25:18,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2af55ce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:25:18, skipping insertion in model container [2018-10-24 18:25:18,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:25:18" (3/3) ... [2018-10-24 18:25:18,806 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label36_false-unreach-call.c [2018-10-24 18:25:18,817 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:25:18,828 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:25:18,846 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:25:18,897 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:25:18,898 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:25:18,898 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:25:18,898 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:25:18,898 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:25:18,898 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:25:18,898 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:25:18,899 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:25:18,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 18:25:18,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-10-24 18:25:18,954 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:25:18,954 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:25:18,957 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:25:18,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:25:18,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1333947308, now seen corresponding path program 1 times [2018-10-24 18:25:18,966 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:25:19,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:19,025 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:25:19,025 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:19,026 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:25:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:25:19,401 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:25:19,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:25:19,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:25:19,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:25:19,512 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:25:19,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:25:19,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:25:19,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:25:19,543 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-24 18:25:31,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:25:31,030 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-10-24 18:25:31,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:25:31,032 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-10-24 18:25:31,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:25:31,073 INFO L225 Difference]: With dead ends: 3087 [2018-10-24 18:25:31,073 INFO L226 Difference]: Without dead ends: 1965 [2018-10-24 18:25:31,085 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:25:31,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-10-24 18:25:31,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-10-24 18:25:31,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-10-24 18:25:31,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-10-24 18:25:31,275 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 18 [2018-10-24 18:25:31,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:25:31,276 INFO L481 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-10-24 18:25:31,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:25:31,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-10-24 18:25:31,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-24 18:25:31,285 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:25:31,285 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:25:31,285 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:25:31,287 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:25:31,287 INFO L82 PathProgramCache]: Analyzing trace with hash -981365754, now seen corresponding path program 1 times [2018-10-24 18:25:31,287 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:25:31,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:31,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:25:31,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:31,291 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:25:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:25:31,724 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:25:31,724 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:25:31,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:25:31,725 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:25:31,727 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:25:31,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:25:31,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:25:31,728 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 6 states. [2018-10-24 18:25:43,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:25:43,990 INFO L93 Difference]: Finished difference Result 5634 states and 10287 transitions. [2018-10-24 18:25:43,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:25:43,991 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2018-10-24 18:25:43,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:25:44,019 INFO L225 Difference]: With dead ends: 5634 [2018-10-24 18:25:44,020 INFO L226 Difference]: Without dead ends: 3681 [2018-10-24 18:25:44,028 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 [2018-10-24 18:25:44,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3681 states. [2018-10-24 18:25:44,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3681 to 3650. [2018-10-24 18:25:44,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2018-10-24 18:25:44,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5957 transitions. [2018-10-24 18:25:44,157 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5957 transitions. Word has length 95 [2018-10-24 18:25:44,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:25:44,160 INFO L481 AbstractCegarLoop]: Abstraction has 3650 states and 5957 transitions. [2018-10-24 18:25:44,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:25:44,160 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5957 transitions. [2018-10-24 18:25:44,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-24 18:25:44,169 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:25:44,170 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:25:44,171 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:25:44,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:25:44,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1372383228, now seen corresponding path program 1 times [2018-10-24 18:25:44,171 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:25:44,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:44,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:25:44,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:44,173 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:25:44,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:25:44,510 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:25:44,924 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:25:44,925 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:25:44,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:25:44,926 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:25:44,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:25:44,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:25:44,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:25:44,928 INFO L87 Difference]: Start difference. First operand 3650 states and 5957 transitions. Second operand 6 states. [2018-10-24 18:25:56,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:25:56,345 INFO L93 Difference]: Finished difference Result 12385 states and 20601 transitions. [2018-10-24 18:25:56,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:25:56,345 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 114 [2018-10-24 18:25:56,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:25:56,398 INFO L225 Difference]: With dead ends: 12385 [2018-10-24 18:25:56,398 INFO L226 Difference]: Without dead ends: 8741 [2018-10-24 18:25:56,422 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:25:56,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8741 states. [2018-10-24 18:25:56,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8741 to 8684. [2018-10-24 18:25:56,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8684 states. [2018-10-24 18:25:56,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8684 states to 8684 states and 12864 transitions. [2018-10-24 18:25:56,659 INFO L78 Accepts]: Start accepts. Automaton has 8684 states and 12864 transitions. Word has length 114 [2018-10-24 18:25:56,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:25:56,660 INFO L481 AbstractCegarLoop]: Abstraction has 8684 states and 12864 transitions. [2018-10-24 18:25:56,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:25:56,660 INFO L276 IsEmpty]: Start isEmpty. Operand 8684 states and 12864 transitions. [2018-10-24 18:25:56,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-10-24 18:25:56,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:25:56,664 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:25:56,664 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:25:56,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:25:56,665 INFO L82 PathProgramCache]: Analyzing trace with hash 858026980, now seen corresponding path program 1 times [2018-10-24 18:25:56,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:25:56,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:56,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:25:56,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:25:56,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:25:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:25:56,956 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:25:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:25:57,366 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:25:57,366 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:25:57,366 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:25:57,367 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:25:57,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:25:57,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:25:57,367 INFO L87 Difference]: Start difference. First operand 8684 states and 12864 transitions. Second operand 6 states. [2018-10-24 18:26:09,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:26:09,266 INFO L93 Difference]: Finished difference Result 22909 states and 34919 transitions. [2018-10-24 18:26:09,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:26:09,267 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 126 [2018-10-24 18:26:09,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:26:09,360 INFO L225 Difference]: With dead ends: 22909 [2018-10-24 18:26:09,360 INFO L226 Difference]: Without dead ends: 14231 [2018-10-24 18:26:09,400 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:26:09,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14231 states. [2018-10-24 18:26:09,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14231 to 14057. [2018-10-24 18:26:09,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14057 states. [2018-10-24 18:26:09,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14057 states to 14057 states and 19960 transitions. [2018-10-24 18:26:09,758 INFO L78 Accepts]: Start accepts. Automaton has 14057 states and 19960 transitions. Word has length 126 [2018-10-24 18:26:09,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:26:09,759 INFO L481 AbstractCegarLoop]: Abstraction has 14057 states and 19960 transitions. [2018-10-24 18:26:09,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:26:09,759 INFO L276 IsEmpty]: Start isEmpty. Operand 14057 states and 19960 transitions. [2018-10-24 18:26:09,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 18:26:09,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:26:09,764 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:26:09,764 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:26:09,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:09,765 INFO L82 PathProgramCache]: Analyzing trace with hash -476586204, now seen corresponding path program 1 times [2018-10-24 18:26:09,765 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:26:09,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:09,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:26:09,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:26:09,766 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:26:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:26:10,080 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 22 proven. 67 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:26:10,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:26:10,081 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:26:10,082 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 182 with the following transitions: [2018-10-24 18:26:10,084 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2671], [2673], [2676], [2684], [2692], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3128], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3225], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 18:26:10,175 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:26:10,175 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:26:14,511 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:26:14,513 INFO L272 AbstractInterpreter]: Visited 96 different actions 96 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 18:26:14,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:26:14,554 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:26:18,133 INFO L232 lantSequenceWeakener]: Weakened 160 states. On average, predicates are now at 71.15% of their original sizes. [2018-10-24 18:26:18,133 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:26:19,644 INFO L413 sIntCurrentIteration]: We have 180 unified AI predicates [2018-10-24 18:26:19,644 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:26:19,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:26:19,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [5] total 13 [2018-10-24 18:26:19,646 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:26:19,646 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 18:26:19,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 18:26:19,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:26:19,647 INFO L87 Difference]: Start difference. First operand 14057 states and 19960 transitions. Second operand 10 states. [2018-10-24 18:26:42,497 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 18:28:42,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 18:28:42,198 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:28:42,203 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:28:42,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:28:42 BoogieIcfgContainer [2018-10-24 18:28:42,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:28:42,204 INFO L168 Benchmark]: Toolchain (without parser) took 217584.01 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.9 GB in the end (delta: -2.5 GB). Peak memory consumption was 173.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:42,205 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:28:42,206 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2631.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:42,207 INFO L168 Benchmark]: Boogie Procedure Inliner took 569.30 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 826.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:42,208 INFO L168 Benchmark]: Boogie Preprocessor took 365.72 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:42,209 INFO L168 Benchmark]: RCFGBuilder took 10606.66 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 180.4 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 34.3 MB). Peak memory consumption was 655.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:28:42,210 INFO L168 Benchmark]: TraceAbstraction took 203404.59 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: -1.7 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:28:42,215 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2631.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 243.1 MB). Peak memory consumption was 243.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 569.30 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 826.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 83.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 365.72 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10606.66 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 180.4 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 34.3 MB). Peak memory consumption was 655.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 203404.59 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: -1.7 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 45]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 45). Cancelled while BasicCegarLoop was constructing difference of abstraction (14057states) and FLOYD_HOARE automaton (currently 9 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (5963 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 203.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 189.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2219 SDtfs, 17088 SDslu, 1843 SDs, 0 SdLazy, 21004 SolverSat, 6493 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 142.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 219 GetRequests, 181 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14057occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9946153846153845 AbsIntWeakeningRatio, 0.15 AbsIntAvgWeakeningVarsNumRemoved, 56.81666666666667 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 268 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 534 NumberOfCodeBlocks, 534 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 529 ConstructedInterpolants, 0 QuantifiedInterpolants, 279824 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 60/127 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown