java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 01:21:29,218 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 01:21:29,221 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 01:21:29,236 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 01:21:29,237 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 01:21:29,238 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 01:21:29,239 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 01:21:29,241 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 01:21:29,242 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 01:21:29,243 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 01:21:29,244 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 01:21:29,244 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 01:21:29,245 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 01:21:29,246 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 01:21:29,247 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 01:21:29,248 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 01:21:29,249 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 01:21:29,250 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 01:21:29,252 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 01:21:29,254 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 01:21:29,255 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 01:21:29,256 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 01:21:29,259 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 01:21:29,265 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 01:21:29,266 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 01:21:29,267 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 01:21:29,267 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 01:21:29,268 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 01:21:29,283 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 01:21:29,283 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 01:21:29,284 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 01:21:29,284 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 01:21:29,284 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 01:21:29,284 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 01:21:29,285 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 01:21:29,285 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 01:21:29,285 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 01:21:29,285 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 01:21:29,285 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 01:21:29,286 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 01:21:29,286 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 01:21:29,286 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 01:21:29,287 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 01:21:29,287 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 01:21:29,287 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 01:21:29,287 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 01:21:29,287 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 01:21:29,288 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 01:21:29,288 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 01:21:29,288 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 01:21:29,288 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 01:21:29,288 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 01:21:29,289 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 01:21:29,289 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 01:21:29,289 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 01:21:29,289 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 01:21:29,289 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 01:21:29,289 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 01:21:29,290 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 01:21:29,290 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 01:21:29,290 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 01:21:29,290 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 01:21:29,358 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 01:21:29,374 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 01:21:29,379 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 01:21:29,381 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 01:21:29,381 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 01:21:29,382 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label55_true-unreach-call_false-termination.c [2018-11-07 01:21:29,442 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0746609f7/ff273284bf6a4af9808abf55c50ef1fd/FLAGc52d4aa98 [2018-11-07 01:21:30,033 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 01:21:30,036 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label55_true-unreach-call_false-termination.c [2018-11-07 01:21:30,049 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0746609f7/ff273284bf6a4af9808abf55c50ef1fd/FLAGc52d4aa98 [2018-11-07 01:21:30,064 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0746609f7/ff273284bf6a4af9808abf55c50ef1fd [2018-11-07 01:21:30,076 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 01:21:30,077 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 01:21:30,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 01:21:30,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 01:21:30,083 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 01:21:30,084 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:21:30" (1/1) ... [2018-11-07 01:21:30,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ce3d29a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:30, skipping insertion in model container [2018-11-07 01:21:30,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:21:30" (1/1) ... [2018-11-07 01:21:30,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 01:21:30,154 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 01:21:30,638 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:21:30,644 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 01:21:30,759 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:21:30,776 INFO L193 MainTranslator]: Completed translation [2018-11-07 01:21:30,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:30 WrapperNode [2018-11-07 01:21:30,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 01:21:30,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 01:21:30,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 01:21:30,778 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 01:21:30,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:30" (1/1) ... [2018-11-07 01:21:30,805 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:30" (1/1) ... [2018-11-07 01:21:30,901 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 01:21:30,902 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 01:21:30,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 01:21:30,902 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 01:21:30,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:30" (1/1) ... [2018-11-07 01:21:30,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:30" (1/1) ... [2018-11-07 01:21:30,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:30" (1/1) ... [2018-11-07 01:21:30,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:30" (1/1) ... [2018-11-07 01:21:30,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:30" (1/1) ... [2018-11-07 01:21:31,000 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:30" (1/1) ... [2018-11-07 01:21:31,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:30" (1/1) ... [2018-11-07 01:21:31,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 01:21:31,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 01:21:31,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 01:21:31,025 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 01:21:31,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:30" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 01:21:31,099 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 01:21:31,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 01:21:31,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 01:21:31,099 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 01:21:31,100 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 01:21:31,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 01:21:31,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 01:21:31,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 01:21:31,100 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 01:21:34,190 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 01:21:34,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:21:34 BoogieIcfgContainer [2018-11-07 01:21:34,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 01:21:34,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 01:21:34,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 01:21:34,197 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 01:21:34,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:21:30" (1/3) ... [2018-11-07 01:21:34,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3daab018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:21:34, skipping insertion in model container [2018-11-07 01:21:34,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:21:30" (2/3) ... [2018-11-07 01:21:34,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3daab018 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:21:34, skipping insertion in model container [2018-11-07 01:21:34,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:21:34" (3/3) ... [2018-11-07 01:21:34,202 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label55_true-unreach-call_false-termination.c [2018-11-07 01:21:34,212 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 01:21:34,222 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 01:21:34,238 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 01:21:34,276 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 01:21:34,277 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 01:21:34,277 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 01:21:34,277 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 01:21:34,277 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 01:21:34,278 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 01:21:34,278 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 01:21:34,278 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 01:21:34,306 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-11-07 01:21:34,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-07 01:21:34,320 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:21:34,321 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:21:34,324 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:21:34,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:21:34,330 INFO L82 PathProgramCache]: Analyzing trace with hash -301102600, now seen corresponding path program 1 times [2018-11-07 01:21:34,333 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:21:34,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:21:34,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:21:34,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:21:34,381 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:21:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:21:34,963 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:21:35,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:21:35,030 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:21:35,030 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:21:35,031 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:21:35,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:21:35,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:21:35,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:21:35,058 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-11-07 01:21:36,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:21:36,762 INFO L93 Difference]: Finished difference Result 627 states and 1072 transitions. [2018-11-07 01:21:36,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:21:36,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2018-11-07 01:21:36,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:21:36,783 INFO L225 Difference]: With dead ends: 627 [2018-11-07 01:21:36,784 INFO L226 Difference]: Without dead ends: 388 [2018-11-07 01:21:36,790 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:21:36,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2018-11-07 01:21:36,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 383. [2018-11-07 01:21:36,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-11-07 01:21:36,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 619 transitions. [2018-11-07 01:21:36,868 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 619 transitions. Word has length 112 [2018-11-07 01:21:36,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:21:36,869 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 619 transitions. [2018-11-07 01:21:36,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:21:36,870 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 619 transitions. [2018-11-07 01:21:36,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-11-07 01:21:36,878 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:21:36,878 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 01:21:36,879 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:21:36,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:21:36,879 INFO L82 PathProgramCache]: Analyzing trace with hash 178328325, now seen corresponding path program 1 times [2018-11-07 01:21:36,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:21:36,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:21:36,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:21:36,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:21:36,881 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:21:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:21:37,334 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:21:37,334 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:21:37,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 01:21:37,335 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:21:37,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 01:21:37,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 01:21:37,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:21:37,338 INFO L87 Difference]: Start difference. First operand 383 states and 619 transitions. Second operand 5 states. [2018-11-07 01:21:39,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:21:39,067 INFO L93 Difference]: Finished difference Result 905 states and 1519 transitions. [2018-11-07 01:21:39,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 01:21:39,068 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2018-11-07 01:21:39,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:21:39,073 INFO L225 Difference]: With dead ends: 905 [2018-11-07 01:21:39,073 INFO L226 Difference]: Without dead ends: 382 [2018-11-07 01:21:39,077 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:21:39,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-11-07 01:21:39,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-11-07 01:21:39,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-11-07 01:21:39,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 613 transitions. [2018-11-07 01:21:39,115 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 613 transitions. Word has length 121 [2018-11-07 01:21:39,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:21:39,115 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 613 transitions. [2018-11-07 01:21:39,115 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 01:21:39,116 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 613 transitions. [2018-11-07 01:21:39,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-11-07 01:21:39,120 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:21:39,120 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:21:39,120 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:21:39,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:21:39,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1372472321, now seen corresponding path program 1 times [2018-11-07 01:21:39,121 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:21:39,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:21:39,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:21:39,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:21:39,123 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:21:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:21:39,362 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 01:21:39,500 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:21:39,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:21:39,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:21:39,500 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:21:39,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:21:39,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:21:39,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:21:39,502 INFO L87 Difference]: Start difference. First operand 382 states and 613 transitions. Second operand 6 states. [2018-11-07 01:21:42,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:21:42,222 INFO L93 Difference]: Finished difference Result 1241 states and 2101 transitions. [2018-11-07 01:21:42,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 01:21:42,223 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2018-11-07 01:21:42,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:21:42,234 INFO L225 Difference]: With dead ends: 1241 [2018-11-07 01:21:42,235 INFO L226 Difference]: Without dead ends: 865 [2018-11-07 01:21:42,239 INFO L604 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 [2018-11-07 01:21:42,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 865 states. [2018-11-07 01:21:42,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 865 to 818. [2018-11-07 01:21:42,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2018-11-07 01:21:42,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1267 transitions. [2018-11-07 01:21:42,285 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1267 transitions. Word has length 123 [2018-11-07 01:21:42,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:21:42,285 INFO L480 AbstractCegarLoop]: Abstraction has 818 states and 1267 transitions. [2018-11-07 01:21:42,286 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:21:42,286 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1267 transitions. [2018-11-07 01:21:42,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2018-11-07 01:21:42,289 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:21:42,289 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:21:42,290 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:21:42,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:21:42,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1586168017, now seen corresponding path program 1 times [2018-11-07 01:21:42,290 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:21:42,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:21:42,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:21:42,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:21:42,292 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:21:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:21:42,463 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:21:42,463 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:21:42,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:21:42,464 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:21:42,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:21:42,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:21:42,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:21:42,465 INFO L87 Difference]: Start difference. First operand 818 states and 1267 transitions. Second operand 3 states. [2018-11-07 01:21:45,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:21:45,072 INFO L93 Difference]: Finished difference Result 2297 states and 3692 transitions. [2018-11-07 01:21:45,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:21:45,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 126 [2018-11-07 01:21:45,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:21:45,087 INFO L225 Difference]: With dead ends: 2297 [2018-11-07 01:21:45,088 INFO L226 Difference]: Without dead ends: 1485 [2018-11-07 01:21:45,093 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:21:45,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2018-11-07 01:21:45,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1478. [2018-11-07 01:21:45,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1478 states. [2018-11-07 01:21:45,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1478 states to 1478 states and 2327 transitions. [2018-11-07 01:21:45,162 INFO L78 Accepts]: Start accepts. Automaton has 1478 states and 2327 transitions. Word has length 126 [2018-11-07 01:21:45,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:21:45,164 INFO L480 AbstractCegarLoop]: Abstraction has 1478 states and 2327 transitions. [2018-11-07 01:21:45,164 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:21:45,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1478 states and 2327 transitions. [2018-11-07 01:21:45,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-11-07 01:21:45,170 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:21:45,170 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:21:45,170 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:21:45,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:21:45,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1132847554, now seen corresponding path program 1 times [2018-11-07 01:21:45,171 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:21:45,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:21:45,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:21:45,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:21:45,173 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:21:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:21:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:21:45,506 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:21:45,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 01:21:45,506 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:21:45,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 01:21:45,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 01:21:45,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:21:45,508 INFO L87 Difference]: Start difference. First operand 1478 states and 2327 transitions. Second operand 5 states. [2018-11-07 01:21:46,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:21:46,448 INFO L93 Difference]: Finished difference Result 3050 states and 4851 transitions. [2018-11-07 01:21:46,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 01:21:46,457 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2018-11-07 01:21:46,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:21:46,467 INFO L225 Difference]: With dead ends: 3050 [2018-11-07 01:21:46,468 INFO L226 Difference]: Without dead ends: 1430 [2018-11-07 01:21:46,477 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:21:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2018-11-07 01:21:46,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1430. [2018-11-07 01:21:46,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1430 states. [2018-11-07 01:21:46,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1430 states to 1430 states and 2227 transitions. [2018-11-07 01:21:46,529 INFO L78 Accepts]: Start accepts. Automaton has 1430 states and 2227 transitions. Word has length 137 [2018-11-07 01:21:46,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:21:46,530 INFO L480 AbstractCegarLoop]: Abstraction has 1430 states and 2227 transitions. [2018-11-07 01:21:46,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 01:21:46,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1430 states and 2227 transitions. [2018-11-07 01:21:46,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-11-07 01:21:46,537 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:21:46,538 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:21:46,538 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:21:46,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:21:46,538 INFO L82 PathProgramCache]: Analyzing trace with hash 2082625773, now seen corresponding path program 1 times [2018-11-07 01:21:46,538 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:21:46,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:21:46,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:21:46,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:21:46,540 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:21:46,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:21:46,763 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 46 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:21:46,763 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:21:46,763 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:21:46,764 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 164 with the following transitions: [2018-11-07 01:21:46,766 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [131], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [567], [569], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-11-07 01:21:46,838 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:21:46,838 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 01:22:36,712 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 01:22:36,714 INFO L272 AbstractInterpreter]: Visited 116 different actions 340 times. Merged at 7 different actions 14 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 38 variables. [2018-11-07 01:22:36,728 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:22:36,728 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 01:22:45,634 INFO L227 lantSequenceWeakener]: Weakened 23 states. On average, predicates are now at 84.06% of their original sizes. [2018-11-07 01:22:45,635 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 01:25:56,162 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 01:25:56,171 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 01:25:56,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:25:56 BoogieIcfgContainer [2018-11-07 01:25:56,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 01:25:56,176 INFO L168 Benchmark]: Toolchain (without parser) took 266099.82 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 531.0 MB. Max. memory is 7.1 GB. [2018-11-07 01:25:56,178 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 01:25:56,178 INFO L168 Benchmark]: CACSL2BoogieTranslator took 698.85 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. [2018-11-07 01:25:56,179 INFO L168 Benchmark]: Boogie Procedure Inliner took 123.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 728.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2018-11-07 01:25:56,186 INFO L168 Benchmark]: Boogie Preprocessor took 121.92 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 01:25:56,187 INFO L168 Benchmark]: RCFGBuilder took 3166.53 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 103.9 MB). Peak memory consumption was 103.9 MB. Max. memory is 7.1 GB. [2018-11-07 01:25:56,188 INFO L168 Benchmark]: TraceAbstraction took 261981.41 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -835.8 MB). Peak memory consumption was 478.6 MB. Max. memory is 7.1 GB. [2018-11-07 01:25:56,198 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 698.85 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 123.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 728.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.92 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3166.53 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 103.9 MB). Peak memory consumption was 103.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 261981.41 ms. Allocated memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: 1.3 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -835.8 MB). Peak memory consumption was 478.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 487]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 487). Cancelled while BasicCegarLoop was analyzing trace of length 164 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 17 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 261.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 9.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 674 SDtfs, 2319 SDslu, 496 SDs, 0 SdLazy, 3496 SolverSat, 763 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 8.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1478occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 49.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9942837574416525 AbsIntWeakeningRatio, 0.2037037037037037 AbsIntAvgWeakeningVarsNumRemoved, 755.179012345679 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 619 NumberOfCodeBlocks, 619 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 614 ConstructedInterpolants, 0 QuantifiedInterpolants, 563879 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 47/47 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown