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_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:23:15,450 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:23:15,453 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:23:15,472 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:23:15,472 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:23:15,473 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:23:15,474 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:23:15,476 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:23:15,478 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:23:15,479 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:23:15,480 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:23:15,480 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:23:15,481 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:23:15,482 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:23:15,483 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:23:15,484 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:23:15,485 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:23:15,487 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:23:15,489 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:23:15,491 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:23:15,492 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:23:15,493 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:23:15,496 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:23:15,510 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 01:23:15,539 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:23:15,540 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:23:15,541 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:23:15,541 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:23:15,541 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:23:15,541 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:23:15,541 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:23:15,542 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:23:15,542 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:23:15,543 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:23:15,543 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:23:15,543 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:23:15,544 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:23:15,544 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:23:15,544 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:23:15,544 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:23:15,545 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:23:15,547 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:23:15,547 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:23:15,547 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:23:15,547 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:23:15,547 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:23:15,548 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:23:15,548 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:23:15,548 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:23:15,549 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:23:15,549 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:23:15,549 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:23:15,549 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:23:15,549 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:23:15,549 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:23:15,550 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:23:15,550 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:23:15,550 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:23:15,622 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:23:15,640 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:23:15,644 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:23:15,646 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:23:15,646 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:23:15,647 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label05_true-unreach-call.c [2018-10-24 01:23:15,718 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a6c5f6ab5/608b017bfbf74f7486fde51e9eea98d5/FLAG3ebdae69a [2018-10-24 01:23:16,486 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:23:16,487 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label05_true-unreach-call.c [2018-10-24 01:23:16,537 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a6c5f6ab5/608b017bfbf74f7486fde51e9eea98d5/FLAG3ebdae69a [2018-10-24 01:23:16,557 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a6c5f6ab5/608b017bfbf74f7486fde51e9eea98d5 [2018-10-24 01:23:16,569 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:23:16,571 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:23:16,573 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:23:16,573 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:23:16,577 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:23:16,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:16" (1/1) ... [2018-10-24 01:23:16,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc1ab2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:16, skipping insertion in model container [2018-10-24 01:23:16,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:23:16" (1/1) ... [2018-10-24 01:23:16,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:23:16,778 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:23:18,247 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:23:18,253 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:23:19,020 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:23:19,056 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:23:19,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:19 WrapperNode [2018-10-24 01:23:19,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:23:19,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:23:19,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:23:19,058 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:23:19,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:19" (1/1) ... [2018-10-24 01:23:19,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:19" (1/1) ... [2018-10-24 01:23:19,656 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:23:19,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:23:19,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:23:19,657 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:23:19,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:19" (1/1) ... [2018-10-24 01:23:19,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:19" (1/1) ... [2018-10-24 01:23:19,711 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:19" (1/1) ... [2018-10-24 01:23:19,711 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:19" (1/1) ... [2018-10-24 01:23:19,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:19" (1/1) ... [2018-10-24 01:23:19,887 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:19" (1/1) ... [2018-10-24 01:23:19,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:19" (1/1) ... [2018-10-24 01:23:19,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:23:19,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:23:19,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:23:19,980 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:23:19,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:19" (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 01:23:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:23:20,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:23:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 01:23:20,043 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 01:23:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 01:23:20,043 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 01:23:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:23:20,044 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:23:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:23:20,044 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:23:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:23:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:23:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:23:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:23:30,561 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:23:30,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:30 BoogieIcfgContainer [2018-10-24 01:23:30,562 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:23:30,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:23:30,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:23:30,566 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:23:30,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:23:16" (1/3) ... [2018-10-24 01:23:30,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bf9fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:30, skipping insertion in model container [2018-10-24 01:23:30,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:23:19" (2/3) ... [2018-10-24 01:23:30,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bf9fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:23:30, skipping insertion in model container [2018-10-24 01:23:30,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:23:30" (3/3) ... [2018-10-24 01:23:30,570 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label05_true-unreach-call.c [2018-10-24 01:23:30,580 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:23:30,590 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:23:30,607 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:23:30,658 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:23:30,658 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:23:30,659 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:23:30,659 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:23:30,659 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:23:30,659 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:23:30,659 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:23:30,659 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:23:30,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 01:23:30,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-10-24 01:23:30,715 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:23:30,716 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] [2018-10-24 01:23:30,719 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:23:30,724 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:23:30,724 INFO L82 PathProgramCache]: Analyzing trace with hash -192700485, now seen corresponding path program 1 times [2018-10-24 01:23:30,726 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:23:30,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:30,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:23:30,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:30,784 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:23:30,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:23:31,248 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 01:23:31,266 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 01:23:31,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:23:31,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:23:31,269 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:23:31,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:23:31,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:23:31,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:23:31,296 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-24 01:23:44,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:23:44,752 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-10-24 01:23:44,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:23:44,764 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2018-10-24 01:23:44,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:23:44,821 INFO L225 Difference]: With dead ends: 3968 [2018-10-24 01:23:44,822 INFO L226 Difference]: Without dead ends: 2842 [2018-10-24 01:23:44,839 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:23:44,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-10-24 01:23:45,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-10-24 01:23:45,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-10-24 01:23:45,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-10-24 01:23:45,023 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 49 [2018-10-24 01:23:45,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:23:45,024 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-10-24 01:23:45,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:23:45,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-10-24 01:23:45,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-24 01:23:45,031 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:23:45,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:23:45,032 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:23:45,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:23:45,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1544921282, now seen corresponding path program 1 times [2018-10-24 01:23:45,033 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:23:45,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:45,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:23:45,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:23:45,034 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:23:45,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:23:45,398 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:23:45,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:23:45,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:23:45,399 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:23:45,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:23:45,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:23:45,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:23:45,402 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-10-24 01:24:02,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:24:02,499 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-10-24 01:24:02,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:24:02,500 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2018-10-24 01:24:02,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:24:02,524 INFO L225 Difference]: With dead ends: 5673 [2018-10-24 01:24:02,524 INFO L226 Difference]: Without dead ends: 3698 [2018-10-24 01:24:02,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:24:02,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-10-24 01:24:02,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-10-24 01:24:02,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-10-24 01:24:02,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-10-24 01:24:02,636 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 119 [2018-10-24 01:24:02,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:24:02,636 INFO L481 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-10-24 01:24:02,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:24:02,637 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-10-24 01:24:02,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-24 01:24:02,641 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:24:02,641 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:02,642 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:24:02,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:24:02,642 INFO L82 PathProgramCache]: Analyzing trace with hash 745803618, now seen corresponding path program 1 times [2018-10-24 01:24:02,642 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:24:02,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:02,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:24:02,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:02,644 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:24:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:24:02,830 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:24:02,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:24:02,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:24:02,830 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:24:02,831 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:24:02,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:24:02,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:24:02,832 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-10-24 01:24:15,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:24:15,779 INFO L93 Difference]: Finished difference Result 10963 states and 17865 transitions. [2018-10-24 01:24:15,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:24:15,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-10-24 01:24:15,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:24:15,821 INFO L225 Difference]: With dead ends: 10963 [2018-10-24 01:24:15,821 INFO L226 Difference]: Without dead ends: 7282 [2018-10-24 01:24:15,834 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:24:15,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-10-24 01:24:15,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-10-24 01:24:16,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-10-24 01:24:16,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10520 transitions. [2018-10-24 01:24:16,018 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10520 transitions. Word has length 121 [2018-10-24 01:24:16,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:24:16,018 INFO L481 AbstractCegarLoop]: Abstraction has 7175 states and 10520 transitions. [2018-10-24 01:24:16,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:24:16,018 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10520 transitions. [2018-10-24 01:24:16,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-10-24 01:24:16,022 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:24:16,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:16,023 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:24:16,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:24:16,023 INFO L82 PathProgramCache]: Analyzing trace with hash -2075646886, now seen corresponding path program 1 times [2018-10-24 01:24:16,023 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:24:16,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:16,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:24:16,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:16,024 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:24:16,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:24:16,264 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:24:16,265 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:24:16,265 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:24:16,265 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:24:16,266 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:24:16,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:24:16,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:24:16,267 INFO L87 Difference]: Start difference. First operand 7175 states and 10520 transitions. Second operand 4 states. [2018-10-24 01:24:26,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:24:26,031 INFO L93 Difference]: Finished difference Result 27675 states and 43299 transitions. [2018-10-24 01:24:26,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:24:26,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 165 [2018-10-24 01:24:26,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:24:26,128 INFO L225 Difference]: With dead ends: 27675 [2018-10-24 01:24:26,128 INFO L226 Difference]: Without dead ends: 20506 [2018-10-24 01:24:26,180 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:24:26,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20506 states. [2018-10-24 01:24:26,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20506 to 20467. [2018-10-24 01:24:26,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20467 states. [2018-10-24 01:24:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20467 states to 20467 states and 29131 transitions. [2018-10-24 01:24:26,680 INFO L78 Accepts]: Start accepts. Automaton has 20467 states and 29131 transitions. Word has length 165 [2018-10-24 01:24:26,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:24:26,680 INFO L481 AbstractCegarLoop]: Abstraction has 20467 states and 29131 transitions. [2018-10-24 01:24:26,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:24:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 20467 states and 29131 transitions. [2018-10-24 01:24:26,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-24 01:24:26,684 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:24:26,684 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:24:26,685 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:24:26,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:24:26,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1150006652, now seen corresponding path program 1 times [2018-10-24 01:24:26,685 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:24:26,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:26,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:24:26,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:26,687 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:24:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:24:26,971 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:24:27,048 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:24:27,048 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:24:27,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:24:27,049 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:24:27,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:24:27,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:24:27,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:24:27,050 INFO L87 Difference]: Start difference. First operand 20467 states and 29131 transitions. Second operand 3 states. [2018-10-24 01:24:36,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:24:36,501 INFO L93 Difference]: Finished difference Result 58971 states and 88554 transitions. [2018-10-24 01:24:36,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:24:36,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2018-10-24 01:24:36,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:24:36,655 INFO L225 Difference]: With dead ends: 58971 [2018-10-24 01:24:36,656 INFO L226 Difference]: Without dead ends: 38510 [2018-10-24 01:24:36,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 01:24:36,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38510 states. [2018-10-24 01:24:37,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38510 to 38503. [2018-10-24 01:24:37,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38503 states. [2018-10-24 01:24:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38503 states to 38503 states and 54012 transitions. [2018-10-24 01:24:37,703 INFO L78 Accepts]: Start accepts. Automaton has 38503 states and 54012 transitions. Word has length 170 [2018-10-24 01:24:37,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:24:37,704 INFO L481 AbstractCegarLoop]: Abstraction has 38503 states and 54012 transitions. [2018-10-24 01:24:37,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:24:37,704 INFO L276 IsEmpty]: Start isEmpty. Operand 38503 states and 54012 transitions. [2018-10-24 01:24:37,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2018-10-24 01:24:37,754 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:24:37,755 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-10-24 01:24:37,755 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:24:37,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:24:37,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1475529496, now seen corresponding path program 1 times [2018-10-24 01:24:37,756 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:24:37,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:37,757 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:24:37,757 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:24:37,757 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:24:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:24:38,234 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:24:38,824 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 85 proven. 23 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-10-24 01:24:38,825 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:24:38,825 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:24:38,827 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 394 with the following transitions: [2018-10-24 01:24:38,830 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2919], [2921], [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], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3409], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3525], [3529], [3533], [3537], [3541], [3545], [3556], [3560], [3564], [3568], [3572], [3576], [3580], [3591], [3595], [3599], [3603], [3614], [3618], [3622], [3626], [3630], [3634], [3638], [3642], [3646], [3650], [3654], [3658], [3662], [3666], [3670], [3674], [3678], [3682], [3686], [3690], [3694], [3698], [3709], [3713], [3717], [3721], [3725], [3729], [3733], [3737], [3741], [3745], [3749], [3753], [3757], [3768], [3772], [3776], [3780], [3784], [3788], [3792], [3796], [3800], [3804], [3807], [3812], [3814], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 01:24:38,975 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:24:38,976 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:25:01,296 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:25:24,957 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:25:24,958 INFO L272 AbstractInterpreter]: Visited 220 different actions 647 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 01:25:24,973 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:25:24,973 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:25:32,068 INFO L232 lantSequenceWeakener]: Weakened 194 states. On average, predicates are now at 71.77% of their original sizes. [2018-10-24 01:25:32,068 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:27:04,804 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:27:04,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:27:04,806 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-10-24 01:27:04,806 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:27:04,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-24 01:27:04,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-24 01:27:04,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2018-10-24 01:27:04,807 INFO L87 Difference]: Start difference. First operand 38503 states and 54012 transitions. Second operand 18 states. Received shutdown request... [2018-10-24 01:27:21,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 01:27:21,204 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:27:21,210 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:27:21,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:27:21 BoogieIcfgContainer [2018-10-24 01:27:21,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:27:21,212 INFO L168 Benchmark]: Toolchain (without parser) took 244642.34 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -399.3 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 01:27:21,213 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:27:21,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2485.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:27:21,215 INFO L168 Benchmark]: Boogie Procedure Inliner took 598.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-24 01:27:21,216 INFO L168 Benchmark]: Boogie Preprocessor took 322.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. [2018-10-24 01:27:21,217 INFO L168 Benchmark]: RCFGBuilder took 10582.67 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 209.2 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -24.9 MB). Peak memory consumption was 672.0 MB. Max. memory is 7.1 GB. [2018-10-24 01:27:21,218 INFO L168 Benchmark]: TraceAbstraction took 230648.42 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 396.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 01:27:21,223 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2485.03 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 598.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 322.22 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10582.67 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 209.2 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: -24.9 MB). Peak memory consumption was 672.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230648.42 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 396.4 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 138). Cancelled while BasicCegarLoop was constructing difference of abstraction (38503states) and FLOYD_HOARE automaton (currently 9 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (87 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 230.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 79.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3001 SDtfs, 12220 SDslu, 2096 SDs, 0 SdLazy, 22576 SolverSat, 6136 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 58.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 430 GetRequests, 277 SyntacticMatches, 115 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 93.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38503occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 46.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9972291993720561 AbsIntWeakeningRatio, 0.07397959183673469 AbsIntAvgWeakeningVarsNumRemoved, 80.71173469387755 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.9s AutomataMinimizationTime, 5 MinimizatonAttempts, 1025 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1017 NumberOfCodeBlocks, 1017 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1011 ConstructedInterpolants, 0 QuantifiedInterpolants, 803183 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 359/382 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown