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/Problem10_label48_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:09:16,765 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:09:16,768 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:09:16,785 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:09:16,786 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:09:16,787 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:09:16,788 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:09:16,791 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:09:16,793 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:09:16,796 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:09:16,798 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:09:16,798 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:09:16,799 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:09:16,802 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:09:16,804 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:09:16,804 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:09:16,813 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:09:16,815 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:09:16,819 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:09:16,820 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:09:16,823 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:09:16,824 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:09:16,827 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:09:16,836 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:09:16,836 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:09:16,838 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:09:16,839 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:09:16,839 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 18:09:16,868 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:09:16,869 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:09:16,869 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:09:16,870 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:09:16,870 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:09:16,870 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:09:16,870 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:09:16,870 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:09:16,871 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:09:16,871 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:09:16,872 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:09:16,872 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:09:16,872 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:09:16,873 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:09:16,873 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:09:16,873 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:09:16,873 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:09:16,874 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:09:16,875 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:09:16,875 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:09:16,876 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:09:16,876 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:09:16,876 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:09:16,876 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:09:16,876 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:09:16,877 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:09:16,877 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:09:16,877 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:09:16,877 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:09:16,878 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:09:16,878 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:09:16,878 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:09:16,878 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:09:16,878 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:09:16,945 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:09:16,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:09:16,967 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:09:16,969 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:09:16,970 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:09:16,970 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label48_false-unreach-call.c [2018-10-24 18:09:17,051 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b5e41c561/f4f08a2a0785468787c0aa46634941e7/FLAGece1df376 [2018-10-24 18:09:17,611 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:09:17,613 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label48_false-unreach-call.c [2018-10-24 18:09:17,629 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b5e41c561/f4f08a2a0785468787c0aa46634941e7/FLAGece1df376 [2018-10-24 18:09:17,651 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b5e41c561/f4f08a2a0785468787c0aa46634941e7 [2018-10-24 18:09:17,663 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:09:17,666 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:09:17,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:09:17,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:09:17,675 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:09:17,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:09:17" (1/1) ... [2018-10-24 18:09:17,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28a8effd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:17, skipping insertion in model container [2018-10-24 18:09:17,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:09:17" (1/1) ... [2018-10-24 18:09:17,694 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:09:17,767 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:09:18,305 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:09:18,310 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:09:18,421 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:09:18,440 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:09:18,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:18 WrapperNode [2018-10-24 18:09:18,441 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:09:18,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:09:18,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:09:18,442 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:09:18,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:18" (1/1) ... [2018-10-24 18:09:18,471 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:18" (1/1) ... [2018-10-24 18:09:18,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:09:18,633 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:09:18,633 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:09:18,633 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:09:18,643 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:18" (1/1) ... [2018-10-24 18:09:18,644 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:18" (1/1) ... [2018-10-24 18:09:18,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:18" (1/1) ... [2018-10-24 18:09:18,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:18" (1/1) ... [2018-10-24 18:09:18,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:18" (1/1) ... [2018-10-24 18:09:18,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:18" (1/1) ... [2018-10-24 18:09:18,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:18" (1/1) ... [2018-10-24 18:09:18,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:09:18,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:09:18,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:09:18,724 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:09:18,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:09:18,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:09:18,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:09:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:09:18,813 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:09:18,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:09:18,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:09:18,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:09:18,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:09:22,174 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:09:22,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:09:22 BoogieIcfgContainer [2018-10-24 18:09:22,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:09:22,177 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:09:22,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:09:22,181 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:09:22,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:09:17" (1/3) ... [2018-10-24 18:09:22,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cf6153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:09:22, skipping insertion in model container [2018-10-24 18:09:22,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:09:18" (2/3) ... [2018-10-24 18:09:22,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cf6153 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:09:22, skipping insertion in model container [2018-10-24 18:09:22,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:09:22" (3/3) ... [2018-10-24 18:09:22,186 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label48_false-unreach-call.c [2018-10-24 18:09:22,198 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:09:22,209 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:09:22,228 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:09:22,272 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:09:22,272 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:09:22,273 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:09:22,273 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:09:22,273 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:09:22,273 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:09:22,273 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:09:22,274 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:09:22,305 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-24 18:09:22,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-24 18:09:22,314 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:22,315 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:09:22,318 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:22,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:22,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1154570628, now seen corresponding path program 1 times [2018-10-24 18:09:22,328 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:22,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:22,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:22,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:22,381 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:22,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:22,795 WARN L179 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:09:22,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:22,918 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:22,919 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:09:22,919 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:22,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:09:22,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:09:22,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:09:22,948 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-24 18:09:24,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:24,831 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-24 18:09:24,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:09:24,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-10-24 18:09:24,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:24,857 INFO L225 Difference]: With dead ends: 574 [2018-10-24 18:09:24,857 INFO L226 Difference]: Without dead ends: 356 [2018-10-24 18:09:24,867 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:09:24,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-24 18:09:24,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-24 18:09:24,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-24 18:09:24,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-24 18:09:24,956 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 14 [2018-10-24 18:09:24,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:24,957 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-24 18:09:24,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:09:24,957 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-24 18:09:24,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-24 18:09:24,963 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:24,963 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:09:24,964 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:24,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:24,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1906701860, now seen corresponding path program 1 times [2018-10-24 18:09:24,964 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:24,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:24,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:24,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:24,966 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:25,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:25,314 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:25,315 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:25,315 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:09:25,315 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:25,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:09:25,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:09:25,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:09:25,319 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 6 states. [2018-10-24 18:09:27,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:27,003 INFO L93 Difference]: Finished difference Result 867 states and 1507 transitions. [2018-10-24 18:09:27,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:09:27,004 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2018-10-24 18:09:27,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:27,010 INFO L225 Difference]: With dead ends: 867 [2018-10-24 18:09:27,010 INFO L226 Difference]: Without dead ends: 517 [2018-10-24 18:09:27,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:09:27,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2018-10-24 18:09:27,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 508. [2018-10-24 18:09:27,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2018-10-24 18:09:27,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 831 transitions. [2018-10-24 18:09:27,056 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 831 transitions. Word has length 88 [2018-10-24 18:09:27,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:27,057 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 831 transitions. [2018-10-24 18:09:27,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:09:27,058 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 831 transitions. [2018-10-24 18:09:27,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-24 18:09:27,062 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:27,063 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:09:27,063 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:27,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:27,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1339801912, now seen corresponding path program 1 times [2018-10-24 18:09:27,064 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:27,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:27,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:27,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:27,065 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:27,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:27,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:27,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:09:27,279 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:27,280 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:09:27,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:09:27,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:09:27,281 INFO L87 Difference]: Start difference. First operand 508 states and 831 transitions. Second operand 3 states. [2018-10-24 18:09:28,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:28,467 INFO L93 Difference]: Finished difference Result 1448 states and 2461 transitions. [2018-10-24 18:09:28,470 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:09:28,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 94 [2018-10-24 18:09:28,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:28,478 INFO L225 Difference]: With dead ends: 1448 [2018-10-24 18:09:28,478 INFO L226 Difference]: Without dead ends: 946 [2018-10-24 18:09:28,483 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:09:28,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2018-10-24 18:09:28,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 946. [2018-10-24 18:09:28,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 946 states. [2018-10-24 18:09:28,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1389 transitions. [2018-10-24 18:09:28,530 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1389 transitions. Word has length 94 [2018-10-24 18:09:28,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:28,531 INFO L481 AbstractCegarLoop]: Abstraction has 946 states and 1389 transitions. [2018-10-24 18:09:28,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:09:28,532 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1389 transitions. [2018-10-24 18:09:28,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-24 18:09:28,539 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:28,539 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:09:28,540 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:28,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:28,540 INFO L82 PathProgramCache]: Analyzing trace with hash -853444597, now seen corresponding path program 1 times [2018-10-24 18:09:28,540 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:28,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:28,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:28,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:28,542 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:28,810 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:09:28,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:28,998 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:28,998 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:09:28,998 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:28,999 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:09:28,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:09:28,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:09:29,000 INFO L87 Difference]: Start difference. First operand 946 states and 1389 transitions. Second operand 6 states. [2018-10-24 18:09:32,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:32,685 INFO L93 Difference]: Finished difference Result 2483 states and 3884 transitions. [2018-10-24 18:09:32,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:09:32,686 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2018-10-24 18:09:32,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:32,701 INFO L225 Difference]: With dead ends: 2483 [2018-10-24 18:09:32,701 INFO L226 Difference]: Without dead ends: 1543 [2018-10-24 18:09:32,710 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:09:32,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2018-10-24 18:09:32,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1524. [2018-10-24 18:09:32,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1524 states. [2018-10-24 18:09:32,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 2201 transitions. [2018-10-24 18:09:32,781 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 2201 transitions. Word has length 105 [2018-10-24 18:09:32,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:32,782 INFO L481 AbstractCegarLoop]: Abstraction has 1524 states and 2201 transitions. [2018-10-24 18:09:32,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:09:32,782 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 2201 transitions. [2018-10-24 18:09:32,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-24 18:09:32,792 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:32,793 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:09:32,793 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:32,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:32,793 INFO L82 PathProgramCache]: Analyzing trace with hash -245370561, now seen corresponding path program 1 times [2018-10-24 18:09:32,794 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:32,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:32,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:32,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:32,795 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:33,052 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:33,052 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:33,052 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:09:33,053 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:33,053 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:09:33,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:09:33,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:09:33,055 INFO L87 Difference]: Start difference. First operand 1524 states and 2201 transitions. Second operand 6 states. [2018-10-24 18:09:34,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:34,577 INFO L93 Difference]: Finished difference Result 3629 states and 5475 transitions. [2018-10-24 18:09:34,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:09:34,587 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 127 [2018-10-24 18:09:34,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:34,604 INFO L225 Difference]: With dead ends: 3629 [2018-10-24 18:09:34,604 INFO L226 Difference]: Without dead ends: 2111 [2018-10-24 18:09:34,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:09:34,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2018-10-24 18:09:34,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 2086. [2018-10-24 18:09:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2086 states. [2018-10-24 18:09:34,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 2931 transitions. [2018-10-24 18:09:34,695 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 2931 transitions. Word has length 127 [2018-10-24 18:09:34,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:34,696 INFO L481 AbstractCegarLoop]: Abstraction has 2086 states and 2931 transitions. [2018-10-24 18:09:34,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:09:34,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 2931 transitions. [2018-10-24 18:09:34,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-24 18:09:34,700 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:34,701 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:09:34,704 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:34,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:34,705 INFO L82 PathProgramCache]: Analyzing trace with hash 652649103, now seen corresponding path program 1 times [2018-10-24 18:09:34,705 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:34,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:34,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:34,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:34,707 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:35,009 WARN L179 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:09:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:09:35,434 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:09:35,434 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:09:35,434 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:09:35,435 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:09:35,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:09:35,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:09:35,436 INFO L87 Difference]: Start difference. First operand 2086 states and 2931 transitions. Second operand 6 states. [2018-10-24 18:09:37,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:09:37,155 INFO L93 Difference]: Finished difference Result 4447 states and 6252 transitions. [2018-10-24 18:09:37,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:09:37,158 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-10-24 18:09:37,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:09:37,171 INFO L225 Difference]: With dead ends: 4447 [2018-10-24 18:09:37,172 INFO L226 Difference]: Without dead ends: 2367 [2018-10-24 18:09:37,183 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 18:09:37,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2367 states. [2018-10-24 18:09:37,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2367 to 2303. [2018-10-24 18:09:37,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2303 states. [2018-10-24 18:09:37,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2303 states to 2303 states and 2993 transitions. [2018-10-24 18:09:37,254 INFO L78 Accepts]: Start accepts. Automaton has 2303 states and 2993 transitions. Word has length 151 [2018-10-24 18:09:37,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:09:37,255 INFO L481 AbstractCegarLoop]: Abstraction has 2303 states and 2993 transitions. [2018-10-24 18:09:37,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:09:37,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2303 states and 2993 transitions. [2018-10-24 18:09:37,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2018-10-24 18:09:37,264 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:09:37,264 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, 2, 2, 2, 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] [2018-10-24 18:09:37,265 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:09:37,265 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:09:37,265 INFO L82 PathProgramCache]: Analyzing trace with hash 1632298331, now seen corresponding path program 1 times [2018-10-24 18:09:37,265 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:09:37,266 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:37,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:09:37,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:09:37,267 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:09:37,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:09:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 15 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 18:09:37,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:09:37,708 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:09:37,709 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 232 with the following transitions: [2018-10-24 18:09:37,712 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [13], [15], [18], [26], [34], [42], [50], [58], [66], [74], [82], [90], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-24 18:09:37,803 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:09:37,804 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:09:40,102 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:10:06,252 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:10:06,254 INFO L272 AbstractInterpreter]: Visited 145 different actions 840 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:10:06,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:10:06,269 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:10:10,144 INFO L232 lantSequenceWeakener]: Weakened 60 states. On average, predicates are now at 73.49% of their original sizes. [2018-10-24 18:10:10,145 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:10:35,739 INFO L413 sIntCurrentIteration]: We have 230 unified AI predicates [2018-10-24 18:10:35,740 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:10:35,741 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:10:35,741 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [27] imperfect sequences [8] total 33 [2018-10-24 18:10:35,742 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:10:35,742 INFO L460 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-10-24 18:10:35,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-10-24 18:10:35,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2018-10-24 18:10:35,744 INFO L87 Difference]: Start difference. First operand 2303 states and 2993 transitions. Second operand 27 states. Received shutdown request... [2018-10-24 18:13:08,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-10-24 18:13:08,954 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:13:08,961 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:13:08,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:13:08 BoogieIcfgContainer [2018-10-24 18:13:08,962 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:13:08,963 INFO L168 Benchmark]: Toolchain (without parser) took 231297.83 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 1.6 GB in the end (delta: -149.6 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 18:13:08,964 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 18:13:08,965 INFO L168 Benchmark]: CACSL2BoogieTranslator took 773.80 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. [2018-10-24 18:13:08,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 191.42 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.7 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:08,967 INFO L168 Benchmark]: Boogie Preprocessor took 89.69 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 18:13:08,967 INFO L168 Benchmark]: RCFGBuilder took 3452.72 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 120.5 MB). Peak memory consumption was 120.5 MB. Max. memory is 7.1 GB. [2018-10-24 18:13:08,968 INFO L168 Benchmark]: TraceAbstraction took 226784.90 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 477.2 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 18:13:08,974 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 773.80 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 191.42 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 720.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.7 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.69 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3452.72 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 120.5 MB). Peak memory consumption was 120.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226784.90 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.6 GB in the end (delta: 477.2 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 25]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 25). Cancelled while BasicCegarLoop was constructing difference of abstraction (2303states) and FLOYD_HOARE automaton (currently 31 states, 27 states before enhancement),while ReachableStatesComputation was computing reachable states (2658 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 226.7s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 165.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 884 SDtfs, 6239 SDslu, 689 SDs, 0 SdLazy, 6260 SolverSat, 1190 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 83.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 291 GetRequests, 196 SyntacticMatches, 28 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 30.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2303occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 28.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.994872400756144 AbsIntWeakeningRatio, 0.11304347826086956 AbsIntAvgWeakeningVarsNumRemoved, 322.89565217391305 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 117 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 810 NumberOfCodeBlocks, 810 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 803 ConstructedInterpolants, 0 QuantifiedInterpolants, 626266 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 123/129 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown