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/Problem02_label10_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:19:21,515 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:19:21,517 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:19:21,529 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:19:21,530 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:19:21,531 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:19:21,532 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:19:21,534 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:19:21,536 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:19:21,537 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:19:21,538 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:19:21,538 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:19:21,539 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:19:21,540 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:19:21,541 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:19:21,542 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:19:21,543 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:19:21,545 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:19:21,547 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:19:21,548 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:19:21,550 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:19:21,551 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:19:21,553 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:19:21,563 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 [2018-10-23 23:19:21,585 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:19:21,586 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:19:21,586 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:19:21,592 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:19:21,593 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:19:21,593 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:19:21,593 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:19:21,593 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:19:21,593 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:19:21,594 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:19:21,594 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:19:21,594 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:19:21,595 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:19:21,596 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:19:21,596 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:19:21,596 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:19:21,596 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:19:21,596 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:19:21,597 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:19:21,597 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:19:21,597 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:19:21,597 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:19:21,597 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:19:21,598 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:19:21,599 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:19:21,599 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:19:21,599 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:19:21,599 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:19:21,600 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:19:21,600 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:19:21,600 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:19:21,600 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:19:21,601 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:19:21,601 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:19:21,655 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:19:21,672 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:19:21,676 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:19:21,678 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:19:21,678 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:19:21,679 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label10_true-unreach-call_false-termination.c [2018-10-23 23:19:21,758 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/63f722f89/317be1f79a8b4536a2147033bb16fb92/FLAGe9ad688c3 [2018-10-23 23:19:22,377 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:19:22,378 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label10_true-unreach-call_false-termination.c [2018-10-23 23:19:22,391 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/63f722f89/317be1f79a8b4536a2147033bb16fb92/FLAGe9ad688c3 [2018-10-23 23:19:22,418 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/63f722f89/317be1f79a8b4536a2147033bb16fb92 [2018-10-23 23:19:22,432 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:19:22,434 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:19:22,435 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:19:22,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:19:22,446 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:19:22,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:19:22" (1/1) ... [2018-10-23 23:19:22,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@255fd7b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:22, skipping insertion in model container [2018-10-23 23:19:22,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:19:22" (1/1) ... [2018-10-23 23:19:22,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:19:22,545 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:19:23,038 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:19:23,048 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:19:23,173 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:19:23,195 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:19:23,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:23 WrapperNode [2018-10-23 23:19:23,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:19:23,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:19:23,198 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:19:23,198 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:19:23,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:23" (1/1) ... [2018-10-23 23:19:23,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:23" (1/1) ... [2018-10-23 23:19:23,386 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:19:23,386 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:19:23,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:19:23,387 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:19:23,398 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:23" (1/1) ... [2018-10-23 23:19:23,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:23" (1/1) ... [2018-10-23 23:19:23,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:23" (1/1) ... [2018-10-23 23:19:23,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:23" (1/1) ... [2018-10-23 23:19:23,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:23" (1/1) ... [2018-10-23 23:19:23,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:23" (1/1) ... [2018-10-23 23:19:23,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:23" (1/1) ... [2018-10-23 23:19:23,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:19:23,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:19:23,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:19:23,471 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:19:23,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:23" (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 [2018-10-23 23:19:23,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:19:23,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:19:23,548 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:19:23,548 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:19:23,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:19:23,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:19:23,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:19:23,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:19:26,683 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:19:26,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:19:26 BoogieIcfgContainer [2018-10-23 23:19:26,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:19:26,686 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:19:26,686 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:19:26,690 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:19:26,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:19:22" (1/3) ... [2018-10-23 23:19:26,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63194f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:19:26, skipping insertion in model container [2018-10-23 23:19:26,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:19:23" (2/3) ... [2018-10-23 23:19:26,692 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63194f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:19:26, skipping insertion in model container [2018-10-23 23:19:26,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:19:26" (3/3) ... [2018-10-23 23:19:26,694 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label10_true-unreach-call_false-termination.c [2018-10-23 23:19:26,711 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:19:26,719 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:19:26,735 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:19:26,775 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:19:26,775 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:19:26,776 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:19:26,776 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:19:26,776 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:19:26,776 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:19:26,776 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:19:26,777 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:19:26,813 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 23:19:26,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-10-23 23:19:26,829 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:19:26,830 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:19:26,832 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:19:26,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:19:26,838 INFO L82 PathProgramCache]: Analyzing trace with hash -773755248, now seen corresponding path program 1 times [2018-10-23 23:19:26,840 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:19:26,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:26,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:19:26,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:26,888 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:19:27,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:19:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:19:27,860 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:19:27,860 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 23:19:27,861 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:19:27,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 23:19:27,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 23:19:27,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 23:19:27,888 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 4 states. [2018-10-23 23:19:30,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:19:30,271 INFO L93 Difference]: Finished difference Result 774 states and 1357 transitions. [2018-10-23 23:19:30,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:19:30,275 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2018-10-23 23:19:30,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:19:30,298 INFO L225 Difference]: With dead ends: 774 [2018-10-23 23:19:30,299 INFO L226 Difference]: Without dead ends: 531 [2018-10-23 23:19:30,306 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 23:19:30,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-10-23 23:19:30,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 529. [2018-10-23 23:19:30,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 529 states. [2018-10-23 23:19:30,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 922 transitions. [2018-10-23 23:19:30,406 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 922 transitions. Word has length 142 [2018-10-23 23:19:30,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:19:30,407 INFO L481 AbstractCegarLoop]: Abstraction has 529 states and 922 transitions. [2018-10-23 23:19:30,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 23:19:30,407 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 922 transitions. [2018-10-23 23:19:30,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-10-23 23:19:30,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:19:30,418 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:19:30,419 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:19:30,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:19:30,419 INFO L82 PathProgramCache]: Analyzing trace with hash -309014567, now seen corresponding path program 1 times [2018-10-23 23:19:30,420 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:19:30,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:30,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:19:30,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:30,421 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:19:30,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:19:30,669 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:19:30,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:19:30,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:19:30,670 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:19:30,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:19:30,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:19:30,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:19:30,674 INFO L87 Difference]: Start difference. First operand 529 states and 922 transitions. Second operand 6 states. [2018-10-23 23:19:32,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:19:32,935 INFO L93 Difference]: Finished difference Result 1284 states and 2274 transitions. [2018-10-23 23:19:32,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:19:32,939 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 164 [2018-10-23 23:19:32,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:19:32,947 INFO L225 Difference]: With dead ends: 1284 [2018-10-23 23:19:32,948 INFO L226 Difference]: Without dead ends: 761 [2018-10-23 23:19:32,952 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 [2018-10-23 23:19:32,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2018-10-23 23:19:33,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 742. [2018-10-23 23:19:33,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2018-10-23 23:19:33,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 1199 transitions. [2018-10-23 23:19:33,041 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 1199 transitions. Word has length 164 [2018-10-23 23:19:33,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:19:33,041 INFO L481 AbstractCegarLoop]: Abstraction has 742 states and 1199 transitions. [2018-10-23 23:19:33,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:19:33,042 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 1199 transitions. [2018-10-23 23:19:33,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-10-23 23:19:33,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:19:33,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:19:33,047 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:19:33,047 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:19:33,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1423050670, now seen corresponding path program 1 times [2018-10-23 23:19:33,048 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:19:33,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:33,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:19:33,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:33,049 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:19:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:19:33,496 WARN L179 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-23 23:19:33,586 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:19:33,587 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:19:33,587 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:19:33,588 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:19:33,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:19:33,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:19:33,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:19:33,589 INFO L87 Difference]: Start difference. First operand 742 states and 1199 transitions. Second operand 5 states. [2018-10-23 23:19:36,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:19:36,342 INFO L93 Difference]: Finished difference Result 1625 states and 2665 transitions. [2018-10-23 23:19:36,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:19:36,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2018-10-23 23:19:36,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:19:36,350 INFO L225 Difference]: With dead ends: 1625 [2018-10-23 23:19:36,350 INFO L226 Difference]: Without dead ends: 741 [2018-10-23 23:19:36,353 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:19:36,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-10-23 23:19:36,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2018-10-23 23:19:36,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2018-10-23 23:19:36,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1181 transitions. [2018-10-23 23:19:36,384 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1181 transitions. Word has length 169 [2018-10-23 23:19:36,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:19:36,384 INFO L481 AbstractCegarLoop]: Abstraction has 741 states and 1181 transitions. [2018-10-23 23:19:36,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:19:36,384 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1181 transitions. [2018-10-23 23:19:36,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-23 23:19:36,389 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:19:36,390 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:19:36,390 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:19:36,390 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:19:36,390 INFO L82 PathProgramCache]: Analyzing trace with hash 192175635, now seen corresponding path program 1 times [2018-10-23 23:19:36,391 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:19:36,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:36,392 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:19:36,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:36,393 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:19:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:19:36,699 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:19:37,087 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:19:37,088 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:19:37,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:19:37,088 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:19:37,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:19:37,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:19:37,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:19:37,090 INFO L87 Difference]: Start difference. First operand 741 states and 1181 transitions. Second operand 6 states. [2018-10-23 23:19:39,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:19:39,619 INFO L93 Difference]: Finished difference Result 2329 states and 3898 transitions. [2018-10-23 23:19:39,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:19:39,621 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 197 [2018-10-23 23:19:39,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:19:39,636 INFO L225 Difference]: With dead ends: 2329 [2018-10-23 23:19:39,636 INFO L226 Difference]: Without dead ends: 1594 [2018-10-23 23:19:39,642 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 [2018-10-23 23:19:39,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1594 states. [2018-10-23 23:19:39,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1594 to 1552. [2018-10-23 23:19:39,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1552 states. [2018-10-23 23:19:39,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1552 states to 1552 states and 2380 transitions. [2018-10-23 23:19:39,713 INFO L78 Accepts]: Start accepts. Automaton has 1552 states and 2380 transitions. Word has length 197 [2018-10-23 23:19:39,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:19:39,714 INFO L481 AbstractCegarLoop]: Abstraction has 1552 states and 2380 transitions. [2018-10-23 23:19:39,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:19:39,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1552 states and 2380 transitions. [2018-10-23 23:19:39,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-23 23:19:39,725 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:19:39,725 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:19:39,725 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:19:39,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:19:39,726 INFO L82 PathProgramCache]: Analyzing trace with hash 36195093, now seen corresponding path program 1 times [2018-10-23 23:19:39,726 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:19:39,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:39,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:19:39,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:19:39,727 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:19:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:19:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-23 23:19:40,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:19:40,008 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:19:40,009 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 198 with the following transitions: [2018-10-23 23:19:40,011 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [202], [207], [209], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [699], [707], [715], [723], [731], [739], [747], [755], [763], [771], [779], [787], [795], [803], [807], [809], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:19:40,094 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:19:40,095 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:19:52,886 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:19:52,888 INFO L272 AbstractInterpreter]: Visited 142 different actions 142 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-23 23:19:52,898 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:19:52,898 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:19:56,600 INFO L232 lantSequenceWeakener]: Weakened 180 states. On average, predicates are now at 81.51% of their original sizes. [2018-10-23 23:19:56,600 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:19:59,685 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:19:59,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:19:59,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [4] total 15 [2018-10-23 23:19:59,686 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:19:59,687 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-23 23:19:59,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-23 23:19:59,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-10-23 23:19:59,688 INFO L87 Difference]: Start difference. First operand 1552 states and 2380 transitions. Second operand 13 states. [2018-10-23 23:21:22,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:21:22,746 INFO L93 Difference]: Finished difference Result 3398 states and 5219 transitions. [2018-10-23 23:21:22,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 23:21:22,746 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 197 [2018-10-23 23:21:22,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:21:22,757 INFO L225 Difference]: With dead ends: 3398 [2018-10-23 23:21:22,757 INFO L226 Difference]: Without dead ends: 1852 [2018-10-23 23:21:22,762 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 207 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2018-10-23 23:21:22,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2018-10-23 23:21:22,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1699. [2018-10-23 23:21:22,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1699 states. [2018-10-23 23:21:22,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1699 states to 1699 states and 2539 transitions. [2018-10-23 23:21:22,902 INFO L78 Accepts]: Start accepts. Automaton has 1699 states and 2539 transitions. Word has length 197 [2018-10-23 23:21:22,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:21:22,903 INFO L481 AbstractCegarLoop]: Abstraction has 1699 states and 2539 transitions. [2018-10-23 23:21:22,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-23 23:21:22,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1699 states and 2539 transitions. [2018-10-23 23:21:22,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-10-23 23:21:22,911 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:22,911 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:21:22,912 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:22,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:22,912 INFO L82 PathProgramCache]: Analyzing trace with hash 981314004, now seen corresponding path program 1 times [2018-10-23 23:21:22,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:22,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:22,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:22,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:22,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:22,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:23,346 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:21:23,346 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:21:23,347 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:21:23,347 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 208 with the following transitions: [2018-10-23 23:21:23,348 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [9], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [202], [207], [209], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [699], [707], [715], [723], [731], [739], [747], [755], [763], [771], [779], [787], [795], [803], [807], [809], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:21:23,357 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:21:23,359 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:21:52,222 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:21:52,222 INFO L272 AbstractInterpreter]: Visited 146 different actions 286 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-23 23:21:52,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:52,231 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:21:57,885 INFO L232 lantSequenceWeakener]: Weakened 115 states. On average, predicates are now at 82.05% of their original sizes. [2018-10-23 23:21:57,885 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:23:25,559 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:23:25,560 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:23:25,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-23 23:23:25,560 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:23:25,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-23 23:23:25,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-23 23:23:25,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-10-23 23:23:25,561 INFO L87 Difference]: Start difference. First operand 1699 states and 2539 transitions. Second operand 19 states. Received shutdown request... [2018-10-23 23:23:33,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-23 23:23:33,901 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:23:33,905 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:23:33,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:23:33 BoogieIcfgContainer [2018-10-23 23:23:33,906 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:23:33,907 INFO L168 Benchmark]: Toolchain (without parser) took 251474.02 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -121.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-23 23:23:33,908 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-23 23:23:33,909 INFO L168 Benchmark]: CACSL2BoogieTranslator took 761.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:23:33,910 INFO L168 Benchmark]: Boogie Procedure Inliner took 188.77 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -809.5 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:23:33,911 INFO L168 Benchmark]: Boogie Preprocessor took 84.22 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:23:33,911 INFO L168 Benchmark]: RCFGBuilder took 3213.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 103.3 MB). Peak memory consumption was 103.3 MB. Max. memory is 7.1 GB. [2018-10-23 23:23:33,912 INFO L168 Benchmark]: TraceAbstraction took 247219.94 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 552.8 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-23 23:23:33,917 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 761.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 188.77 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -809.5 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.22 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3213.51 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 103.3 MB). Peak memory consumption was 103.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 247219.94 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.5 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 552.8 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 577]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 577). Cancelled while BasicCegarLoop was constructing difference of abstraction (1699states) and FLOYD_HOARE automaton (currently 8 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 23 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 247.1s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 101.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 724 SDtfs, 4035 SDslu, 780 SDs, 0 SdLazy, 3729 SolverSat, 1080 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 453 GetRequests, 360 SyntacticMatches, 30 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 96.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1699occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 41.7s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9960581162466471 AbsIntWeakeningRatio, 0.15422885572139303 AbsIntAvgWeakeningVarsNumRemoved, 1332.6268656716418 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 216 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1076 NumberOfCodeBlocks, 1076 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1070 ConstructedInterpolants, 0 QuantifiedInterpolants, 858641 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 160/208 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown