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/Problem11_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:05:13,144 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:05:13,148 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:05:13,166 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:05:13,167 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:05:13,168 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:05:13,169 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:05:13,171 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:05:13,172 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:05:13,173 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:05:13,174 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:05:13,174 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:05:13,175 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:05:13,176 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:05:13,178 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:05:13,178 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:05:13,179 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:05:13,181 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:05:13,183 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:05:13,185 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:05:13,186 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:05:13,187 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:05:13,190 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:05:13,196 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 01:05:13,196 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 01:05:13,197 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 01:05:13,198 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 01:05:13,199 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 01:05:13,221 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:05:13,222 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:05:13,223 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:05:13,223 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:05:13,223 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:05:13,223 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:05:13,224 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:05:13,224 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:05:13,224 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:05:13,224 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:05:13,224 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:05:13,225 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:05:13,225 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:05:13,225 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:05:13,226 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:05:13,226 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:05:13,226 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:05:13,226 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:05:13,226 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:05:13,227 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:05:13,227 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:05:13,227 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:05:13,227 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:05:13,227 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:05:13,228 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:05:13,228 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:05:13,228 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:05:13,228 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:05:13,228 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:05:13,229 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:05:13,229 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:05:13,229 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:05:13,229 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:05:13,229 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:05:13,275 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:05:13,297 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:05:13,301 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:05:13,304 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:05:13,304 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:05:13,305 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label24_true-unreach-call.c [2018-10-24 01:05:13,380 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/179beb707/afa6a2f06f2f4aba9d269aa8a9aba7f5/FLAGf1a117059 [2018-10-24 01:05:13,985 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:05:13,988 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label24_true-unreach-call.c [2018-10-24 01:05:14,005 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/179beb707/afa6a2f06f2f4aba9d269aa8a9aba7f5/FLAGf1a117059 [2018-10-24 01:05:14,025 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/179beb707/afa6a2f06f2f4aba9d269aa8a9aba7f5 [2018-10-24 01:05:14,039 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:05:14,041 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:05:14,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:05:14,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:05:14,050 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:05:14,051 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:05:14" (1/1) ... [2018-10-24 01:05:14,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac5f7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:14, skipping insertion in model container [2018-10-24 01:05:14,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:05:14" (1/1) ... [2018-10-24 01:05:14,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:05:14,158 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:05:14,786 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:05:14,790 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:05:15,027 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:05:15,047 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:05:15,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:15 WrapperNode [2018-10-24 01:05:15,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:05:15,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:05:15,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:05:15,050 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:05:15,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:15" (1/1) ... [2018-10-24 01:05:15,099 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:15" (1/1) ... [2018-10-24 01:05:15,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:05:15,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:05:15,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:05:15,347 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:05:15,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:15" (1/1) ... [2018-10-24 01:05:15,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:15" (1/1) ... [2018-10-24 01:05:15,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:15" (1/1) ... [2018-10-24 01:05:15,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:15" (1/1) ... [2018-10-24 01:05:15,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:15" (1/1) ... [2018-10-24 01:05:15,461 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:15" (1/1) ... [2018-10-24 01:05:15,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:15" (1/1) ... [2018-10-24 01:05:15,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:05:15,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:05:15,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:05:15,507 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:05:15,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:15" (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 01:05:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:05:15,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:05:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:05:15,578 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:05:15,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:05:15,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:05:15,580 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:05:15,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:05:20,070 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:05:20,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:05:20 BoogieIcfgContainer [2018-10-24 01:05:20,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:05:20,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:05:20,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:05:20,076 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:05:20,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:05:14" (1/3) ... [2018-10-24 01:05:20,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd64569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:05:20, skipping insertion in model container [2018-10-24 01:05:20,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:15" (2/3) ... [2018-10-24 01:05:20,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bd64569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:05:20, skipping insertion in model container [2018-10-24 01:05:20,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:05:20" (3/3) ... [2018-10-24 01:05:20,080 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label24_true-unreach-call.c [2018-10-24 01:05:20,091 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:05:20,103 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:05:20,122 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:05:20,164 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:05:20,165 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:05:20,165 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:05:20,165 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:05:20,166 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:05:20,166 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:05:20,166 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:05:20,166 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:05:20,202 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 01:05:20,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-24 01:05:20,212 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:05:20,213 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:05:20,215 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:05:20,221 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:05:20,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1684659980, now seen corresponding path program 1 times [2018-10-24 01:05:20,223 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:05:20,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:05:20,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:05:20,280 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:05:20,280 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:05:20,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:05:20,775 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 01:05:20,798 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 01:05:20,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:05:20,801 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 01:05:20,801 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:05:20,807 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 01:05:20,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 01:05:20,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:05:20,830 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 01:05:23,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:05:23,959 INFO L93 Difference]: Finished difference Result 996 states and 1776 transitions. [2018-10-24 01:05:23,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 01:05:23,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-10-24 01:05:23,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:05:23,984 INFO L225 Difference]: With dead ends: 996 [2018-10-24 01:05:23,985 INFO L226 Difference]: Without dead ends: 697 [2018-10-24 01:05:23,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 01:05:24,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2018-10-24 01:05:24,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 481. [2018-10-24 01:05:24,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-10-24 01:05:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 742 transitions. [2018-10-24 01:05:24,089 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 742 transitions. Word has length 58 [2018-10-24 01:05:24,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:05:24,090 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 742 transitions. [2018-10-24 01:05:24,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 01:05:24,090 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 742 transitions. [2018-10-24 01:05:24,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 01:05:24,104 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:05:24,104 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:05:24,105 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:05:24,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:05:24,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1326176867, now seen corresponding path program 1 times [2018-10-24 01:05:24,106 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:05:24,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:05:24,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:05:24,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:05:24,110 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:05:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:05:24,488 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:05:24,576 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:05:24,577 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:05:24,577 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:05:24,577 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:05:24,579 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:05:24,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:05:24,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:05:24,580 INFO L87 Difference]: Start difference. First operand 481 states and 742 transitions. Second operand 6 states. [2018-10-24 01:05:29,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:05:29,306 INFO L93 Difference]: Finished difference Result 1725 states and 2777 transitions. [2018-10-24 01:05:29,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:05:29,308 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-10-24 01:05:29,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:05:29,330 INFO L225 Difference]: With dead ends: 1725 [2018-10-24 01:05:29,330 INFO L226 Difference]: Without dead ends: 1250 [2018-10-24 01:05:29,336 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:05:29,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2018-10-24 01:05:29,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1231. [2018-10-24 01:05:29,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2018-10-24 01:05:29,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1812 transitions. [2018-10-24 01:05:29,427 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1812 transitions. Word has length 131 [2018-10-24 01:05:29,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:05:29,428 INFO L481 AbstractCegarLoop]: Abstraction has 1231 states and 1812 transitions. [2018-10-24 01:05:29,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:05:29,428 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1812 transitions. [2018-10-24 01:05:29,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 01:05:29,436 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:05:29,437 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:05:29,439 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:05:29,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:05:29,440 INFO L82 PathProgramCache]: Analyzing trace with hash -704139656, now seen corresponding path program 1 times [2018-10-24 01:05:29,440 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:05:29,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:05:29,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:05:29,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:05:29,443 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:05:29,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:05:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:05:30,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:05:30,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 01:05:30,125 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:05:30,126 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 01:05:30,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 01:05:30,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:05:30,127 INFO L87 Difference]: Start difference. First operand 1231 states and 1812 transitions. Second operand 7 states. [2018-10-24 01:05:36,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:05:36,495 INFO L93 Difference]: Finished difference Result 3656 states and 5587 transitions. [2018-10-24 01:05:36,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 01:05:36,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2018-10-24 01:05:36,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:05:36,519 INFO L225 Difference]: With dead ends: 3656 [2018-10-24 01:05:36,519 INFO L226 Difference]: Without dead ends: 2431 [2018-10-24 01:05:36,532 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-24 01:05:36,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2018-10-24 01:05:36,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2145. [2018-10-24 01:05:36,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2145 states. [2018-10-24 01:05:36,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 2931 transitions. [2018-10-24 01:05:36,615 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 2931 transitions. Word has length 132 [2018-10-24 01:05:36,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:05:36,615 INFO L481 AbstractCegarLoop]: Abstraction has 2145 states and 2931 transitions. [2018-10-24 01:05:36,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 01:05:36,616 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 2931 transitions. [2018-10-24 01:05:36,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-24 01:05:36,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:05:36,619 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:05:36,619 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:05:36,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:05:36,620 INFO L82 PathProgramCache]: Analyzing trace with hash 1415755325, now seen corresponding path program 1 times [2018-10-24 01:05:36,620 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:05:36,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:05:36,621 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:05:36,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:05:36,621 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:05:36,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:05:36,993 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 01:05:36,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:05:36,993 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:05:36,995 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 176 with the following transitions: [2018-10-24 01:05:36,997 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [365], [367], [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], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 01:05:37,080 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:05:37,080 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:05:41,136 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:05:55,676 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:05:55,677 INFO L272 AbstractInterpreter]: Visited 124 different actions 359 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 01:05:55,693 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:05:55,693 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:06:00,241 INFO L232 lantSequenceWeakener]: Weakened 173 states. On average, predicates are now at 73.96% of their original sizes. [2018-10-24 01:06:00,241 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:06:01,497 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:06:01,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:06:01,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 15 [2018-10-24 01:06:01,498 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:06:01,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 01:06:01,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 01:06:01,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-10-24 01:06:01,500 INFO L87 Difference]: Start difference. First operand 2145 states and 2931 transitions. Second operand 12 states. [2018-10-24 01:06:45,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:06:45,294 INFO L93 Difference]: Finished difference Result 4669 states and 6428 transitions. [2018-10-24 01:06:45,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 01:06:45,294 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 175 [2018-10-24 01:06:45,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:06:45,312 INFO L225 Difference]: With dead ends: 4669 [2018-10-24 01:06:45,312 INFO L226 Difference]: Without dead ends: 2530 [2018-10-24 01:06:45,321 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 184 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2018-10-24 01:06:45,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2018-10-24 01:06:45,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2526. [2018-10-24 01:06:45,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2526 states. [2018-10-24 01:06:45,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2526 states to 2526 states and 3338 transitions. [2018-10-24 01:06:45,405 INFO L78 Accepts]: Start accepts. Automaton has 2526 states and 3338 transitions. Word has length 175 [2018-10-24 01:06:45,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:06:45,406 INFO L481 AbstractCegarLoop]: Abstraction has 2526 states and 3338 transitions. [2018-10-24 01:06:45,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 01:06:45,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2526 states and 3338 transitions. [2018-10-24 01:06:45,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-24 01:06:45,409 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:06:45,410 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:06:45,410 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:06:45,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:06:45,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1882969289, now seen corresponding path program 1 times [2018-10-24 01:06:45,411 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:06:45,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:06:45,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:06:45,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:06:45,414 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:06:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:06:45,795 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 01:06:45,796 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:06:45,796 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:06:45,796 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 186 with the following transitions: [2018-10-24 01:06:45,797 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [365], [367], [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], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 01:06:45,805 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:06:45,805 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:06:49,106 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:07:03,445 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:07:03,445 INFO L272 AbstractInterpreter]: Visited 134 different actions 389 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 01:07:03,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:07:03,452 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:07:06,908 INFO L232 lantSequenceWeakener]: Weakened 80 states. On average, predicates are now at 75.75% of their original sizes. [2018-10-24 01:07:06,909 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:07:19,380 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:07:19,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:07:19,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [5] total 23 [2018-10-24 01:07:19,381 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:07:19,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-24 01:07:19,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-24 01:07:19,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2018-10-24 01:07:19,383 INFO L87 Difference]: Start difference. First operand 2526 states and 3338 transitions. Second operand 20 states. Received shutdown request... [2018-10-24 01:09:11,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 01:09:11,864 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:09:11,870 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:09:11,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:09:11 BoogieIcfgContainer [2018-10-24 01:09:11,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:09:11,871 INFO L168 Benchmark]: Toolchain (without parser) took 237831.72 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -267.4 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 01:09:11,872 INFO L168 Benchmark]: CDTParser took 0.25 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 01:09:11,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1006.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. [2018-10-24 01:09:11,874 INFO L168 Benchmark]: Boogie Procedure Inliner took 297.22 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -816.3 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2018-10-24 01:09:11,875 INFO L168 Benchmark]: Boogie Preprocessor took 159.44 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 01:09:11,875 INFO L168 Benchmark]: RCFGBuilder took 4564.64 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: 190.1 MB). Peak memory consumption was 190.1 MB. Max. memory is 7.1 GB. [2018-10-24 01:09:11,876 INFO L168 Benchmark]: TraceAbstraction took 231798.24 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 295.4 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-24 01:09:11,881 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1006.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 297.22 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -816.3 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 159.44 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 4564.64 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: 190.1 MB). Peak memory consumption was 190.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231798.24 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 295.4 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 159]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 159). Cancelled while BasicCegarLoop was constructing difference of abstraction (2526states) and FLOYD_HOARE automaton (currently 17 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (776 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 231.7s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 170.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 886 SDtfs, 5127 SDslu, 1076 SDs, 0 SdLazy, 7734 SolverSat, 1424 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 54.7s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 407 GetRequests, 339 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 20.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2526occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 36.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.99518193372942 AbsIntWeakeningRatio, 0.12290502793296089 AbsIntAvgWeakeningVarsNumRemoved, 210.9413407821229 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 525 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 681 NumberOfCodeBlocks, 681 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 676 ConstructedInterpolants, 0 QuantifiedInterpolants, 464392 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 110/204 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown