java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label14_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:20:38,084 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:20:38,086 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:20:38,100 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:20:38,100 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:20:38,102 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:20:38,103 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:20:38,107 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:20:38,109 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:20:38,112 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:20:38,113 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:20:38,113 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:20:38,115 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:20:38,116 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:20:38,117 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:20:38,118 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:20:38,119 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:20:38,121 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:20:38,123 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:20:38,125 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:20:38,126 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:20:38,127 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:20:38,132 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:20:38,149 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-23 23:20:38,184 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:20:38,184 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:20:38,185 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:20:38,185 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:20:38,185 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:20:38,186 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:20:38,186 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:20:38,186 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:20:38,186 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:20:38,186 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:20:38,187 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:20:38,187 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:20:38,187 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:20:38,188 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:20:38,188 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:20:38,188 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:20:38,188 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:20:38,188 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:20:38,189 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:20:38,189 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:20:38,189 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:20:38,189 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:20:38,190 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:20:38,190 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:20:38,190 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:20:38,190 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:20:38,190 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:20:38,190 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:20:38,191 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:20:38,191 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:20:38,191 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:20:38,191 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:20:38,191 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:20:38,192 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:20:38,253 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:20:38,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:20:38,275 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:20:38,277 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:20:38,278 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:20:38,279 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label14_true-unreach-call_false-termination.c [2018-10-23 23:20:38,359 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cd5e124f7/a59cd661504749fbb6abf40c824642ad/FLAG1f8a0685e [2018-10-23 23:20:38,937 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:20:38,938 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label14_true-unreach-call_false-termination.c [2018-10-23 23:20:38,963 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cd5e124f7/a59cd661504749fbb6abf40c824642ad/FLAG1f8a0685e [2018-10-23 23:20:38,989 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/cd5e124f7/a59cd661504749fbb6abf40c824642ad [2018-10-23 23:20:39,001 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:20:39,002 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:20:39,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:20:39,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:20:39,007 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:20:39,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:20:38" (1/1) ... [2018-10-23 23:20:39,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4145bbd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:20:39, skipping insertion in model container [2018-10-23 23:20:39,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:20:38" (1/1) ... [2018-10-23 23:20:39,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:20:39,103 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:20:39,545 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:20:39,556 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:20:39,665 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:20:39,692 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:20:39,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:20:39 WrapperNode [2018-10-23 23:20:39,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:20:39,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:20:39,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:20:39,694 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:20:39,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:20:39" (1/1) ... [2018-10-23 23:20:39,725 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:20:39" (1/1) ... [2018-10-23 23:20:39,883 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:20:39,883 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:20:39,884 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:20:39,884 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:20:39,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:20:39" (1/1) ... [2018-10-23 23:20:39,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:20:39" (1/1) ... [2018-10-23 23:20:39,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:20:39" (1/1) ... [2018-10-23 23:20:39,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:20:39" (1/1) ... [2018-10-23 23:20:39,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:20:39" (1/1) ... [2018-10-23 23:20:39,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:20:39" (1/1) ... [2018-10-23 23:20:39,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:20:39" (1/1) ... [2018-10-23 23:20:39,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:20:39,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:20:39,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:20:39,950 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:20:39,951 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:20:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:20:40,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:20:40,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:20:40,048 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:20:40,048 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:20:40,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:20:40,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:20:40,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:20:40,049 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:20:43,224 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:20:43,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:20:43 BoogieIcfgContainer [2018-10-23 23:20:43,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:20:43,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:20:43,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:20:43,236 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:20:43,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:20:38" (1/3) ... [2018-10-23 23:20:43,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e26baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:20:43, skipping insertion in model container [2018-10-23 23:20:43,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:20:39" (2/3) ... [2018-10-23 23:20:43,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48e26baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:20:43, skipping insertion in model container [2018-10-23 23:20:43,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:20:43" (3/3) ... [2018-10-23 23:20:43,241 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label14_true-unreach-call_false-termination.c [2018-10-23 23:20:43,252 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:20:43,265 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:20:43,287 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:20:43,346 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:20:43,347 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:20:43,347 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:20:43,347 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:20:43,347 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:20:43,348 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:20:43,348 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:20:43,348 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:20:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-23 23:20:43,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-23 23:20:43,395 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:20:43,397 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:20:43,399 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:20:43,406 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:20:43,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1648799080, now seen corresponding path program 1 times [2018-10-23 23:20:43,409 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:20:43,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:20:43,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:20:43,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:20:43,474 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:20:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:20:44,099 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:20:44,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:20:44,225 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:20:44,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:20:44,225 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:20:44,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:20:44,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:20:44,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:20:44,253 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-23 23:20:45,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:20:45,551 INFO L93 Difference]: Finished difference Result 621 states and 1059 transitions. [2018-10-23 23:20:45,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:20:45,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2018-10-23 23:20:45,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:20:45,574 INFO L225 Difference]: With dead ends: 621 [2018-10-23 23:20:45,575 INFO L226 Difference]: Without dead ends: 382 [2018-10-23 23:20:45,584 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:20:45,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-10-23 23:20:45,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-10-23 23:20:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-10-23 23:20:45,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 608 transitions. [2018-10-23 23:20:45,694 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 608 transitions. Word has length 124 [2018-10-23 23:20:45,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:20:45,696 INFO L481 AbstractCegarLoop]: Abstraction has 382 states and 608 transitions. [2018-10-23 23:20:45,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:20:45,696 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 608 transitions. [2018-10-23 23:20:45,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-23 23:20:45,705 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:20:45,705 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:20:45,709 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:20:45,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:20:45,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1971063541, now seen corresponding path program 1 times [2018-10-23 23:20:45,710 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:20:45,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:20:45,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:20:45,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:20:45,713 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:20:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:20:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:20:46,125 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:20:46,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:20:46,125 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:20:46,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:20:46,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:20:46,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:20:46,129 INFO L87 Difference]: Start difference. First operand 382 states and 608 transitions. Second operand 5 states. [2018-10-23 23:20:48,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:20:48,070 INFO L93 Difference]: Finished difference Result 903 states and 1497 transitions. [2018-10-23 23:20:48,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:20:48,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2018-10-23 23:20:48,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:20:48,077 INFO L225 Difference]: With dead ends: 903 [2018-10-23 23:20:48,077 INFO L226 Difference]: Without dead ends: 381 [2018-10-23 23:20:48,084 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:20:48,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2018-10-23 23:20:48,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 381. [2018-10-23 23:20:48,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2018-10-23 23:20:48,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 602 transitions. [2018-10-23 23:20:48,109 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 602 transitions. Word has length 133 [2018-10-23 23:20:48,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:20:48,110 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 602 transitions. [2018-10-23 23:20:48,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:20:48,111 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 602 transitions. [2018-10-23 23:20:48,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-23 23:20:48,113 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:20:48,114 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:20:48,114 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:20:48,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:20:48,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1740193815, now seen corresponding path program 1 times [2018-10-23 23:20:48,115 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:20:48,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:20:48,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:20:48,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:20:48,117 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:20:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:20:48,536 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:20:48,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:20:48,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:20:48,537 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:20:48,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:20:48,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:20:48,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:20:48,539 INFO L87 Difference]: Start difference. First operand 381 states and 602 transitions. Second operand 5 states. [2018-10-23 23:20:50,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:20:50,362 INFO L93 Difference]: Finished difference Result 901 states and 1482 transitions. [2018-10-23 23:20:50,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:20:50,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2018-10-23 23:20:50,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:20:50,368 INFO L225 Difference]: With dead ends: 901 [2018-10-23 23:20:50,368 INFO L226 Difference]: Without dead ends: 380 [2018-10-23 23:20:50,373 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:20:50,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2018-10-23 23:20:50,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2018-10-23 23:20:50,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2018-10-23 23:20:50,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 594 transitions. [2018-10-23 23:20:50,405 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 594 transitions. Word has length 139 [2018-10-23 23:20:50,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:20:50,405 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 594 transitions. [2018-10-23 23:20:50,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:20:50,405 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 594 transitions. [2018-10-23 23:20:50,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-23 23:20:50,408 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:20:50,408 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:20:50,408 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:20:50,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:20:50,409 INFO L82 PathProgramCache]: Analyzing trace with hash -295510606, now seen corresponding path program 1 times [2018-10-23 23:20:50,409 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:20:50,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:20:50,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:20:50,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:20:50,410 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:20:50,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:20:50,654 WARN L179 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:20:51,041 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:20:51,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:20:51,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:20:51,042 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:20:51,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:20:51,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:20:51,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:20:51,044 INFO L87 Difference]: Start difference. First operand 380 states and 594 transitions. Second operand 6 states. [2018-10-23 23:20:54,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:20:54,773 INFO L93 Difference]: Finished difference Result 1193 states and 1942 transitions. [2018-10-23 23:20:54,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:20:54,776 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-10-23 23:20:54,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:20:54,783 INFO L225 Difference]: With dead ends: 1193 [2018-10-23 23:20:54,783 INFO L226 Difference]: Without dead ends: 819 [2018-10-23 23:20:54,786 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:20:54,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 819 states. [2018-10-23 23:20:54,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 819 to 807. [2018-10-23 23:20:54,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2018-10-23 23:20:54,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1208 transitions. [2018-10-23 23:20:54,823 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1208 transitions. Word has length 147 [2018-10-23 23:20:54,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:20:54,823 INFO L481 AbstractCegarLoop]: Abstraction has 807 states and 1208 transitions. [2018-10-23 23:20:54,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:20:54,824 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1208 transitions. [2018-10-23 23:20:54,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-23 23:20:54,827 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:20:54,828 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:20:54,828 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:20:54,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:20:54,828 INFO L82 PathProgramCache]: Analyzing trace with hash -431421266, now seen corresponding path program 1 times [2018-10-23 23:20:54,829 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:20:54,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:20:54,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:20:54,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:20:54,830 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:20:54,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:20:55,185 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-23 23:20:55,259 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:20:55,259 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:20:55,260 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:20:55,260 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:20:55,260 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:20:55,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:20:55,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:20:55,261 INFO L87 Difference]: Start difference. First operand 807 states and 1208 transitions. Second operand 5 states. [2018-10-23 23:20:56,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:20:56,381 INFO L93 Difference]: Finished difference Result 1753 states and 2669 transitions. [2018-10-23 23:20:56,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:20:56,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2018-10-23 23:20:56,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:20:56,391 INFO L225 Difference]: With dead ends: 1753 [2018-10-23 23:20:56,391 INFO L226 Difference]: Without dead ends: 804 [2018-10-23 23:20:56,395 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:20:56,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2018-10-23 23:20:56,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 804. [2018-10-23 23:20:56,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 804 states. [2018-10-23 23:20:56,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1190 transitions. [2018-10-23 23:20:56,422 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1190 transitions. Word has length 149 [2018-10-23 23:20:56,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:20:56,422 INFO L481 AbstractCegarLoop]: Abstraction has 804 states and 1190 transitions. [2018-10-23 23:20:56,422 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:20:56,422 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1190 transitions. [2018-10-23 23:20:56,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-23 23:20:56,426 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:20:56,426 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:20:56,426 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:20:56,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:20:56,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1643086762, now seen corresponding path program 1 times [2018-10-23 23:20:56,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:20:56,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:20:56,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:20:56,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:20:56,428 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:20:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:20:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:20:56,671 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:20:56,672 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-23 23:20:56,672 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:20:56,672 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 23:20:56,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 23:20:56,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:20:56,673 INFO L87 Difference]: Start difference. First operand 804 states and 1190 transitions. Second operand 5 states. [2018-10-23 23:20:57,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:20:57,716 INFO L93 Difference]: Finished difference Result 1747 states and 2630 transitions. [2018-10-23 23:20:57,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 23:20:57,718 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2018-10-23 23:20:57,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:20:57,723 INFO L225 Difference]: With dead ends: 1747 [2018-10-23 23:20:57,723 INFO L226 Difference]: Without dead ends: 801 [2018-10-23 23:20:57,728 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 23:20:57,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2018-10-23 23:20:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 801. [2018-10-23 23:20:57,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 801 states. [2018-10-23 23:20:57,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1169 transitions. [2018-10-23 23:20:57,760 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1169 transitions. Word has length 151 [2018-10-23 23:20:57,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:20:57,760 INFO L481 AbstractCegarLoop]: Abstraction has 801 states and 1169 transitions. [2018-10-23 23:20:57,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 23:20:57,760 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1169 transitions. [2018-10-23 23:20:57,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-23 23:20:57,764 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:20:57,764 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 23:20:57,764 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:20:57,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:20:57,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1909626462, now seen corresponding path program 1 times [2018-10-23 23:20:57,765 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:20:57,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:20:57,766 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:20:57,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:20:57,766 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:20:57,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:20:58,003 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:20:58,003 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:20:58,003 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:20:58,003 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:20:58,006 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:20:58,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:20:58,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:20:58,007 INFO L87 Difference]: Start difference. First operand 801 states and 1169 transitions. Second operand 6 states. [2018-10-23 23:21:00,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:21:00,015 INFO L93 Difference]: Finished difference Result 2381 states and 3621 transitions. [2018-10-23 23:21:00,019 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:21:00,019 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-10-23 23:21:00,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:21:00,031 INFO L225 Difference]: With dead ends: 2381 [2018-10-23 23:21:00,031 INFO L226 Difference]: Without dead ends: 1586 [2018-10-23 23:21:00,036 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:21:00,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2018-10-23 23:21:00,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1558. [2018-10-23 23:21:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1558 states. [2018-10-23 23:21:00,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2225 transitions. [2018-10-23 23:21:00,095 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2225 transitions. Word has length 155 [2018-10-23 23:21:00,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:21:00,095 INFO L481 AbstractCegarLoop]: Abstraction has 1558 states and 2225 transitions. [2018-10-23 23:21:00,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:21:00,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2225 transitions. [2018-10-23 23:21:00,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-23 23:21:00,103 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:21:00,103 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-23 23:21:00,104 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:21:00,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:00,104 INFO L82 PathProgramCache]: Analyzing trace with hash 1663549744, now seen corresponding path program 1 times [2018-10-23 23:21:00,104 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:21:00,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:00,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:21:00,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:21:00,106 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:21:00,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:21:00,280 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:21:00,281 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:21:00,281 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:21:00,282 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 191 with the following transitions: [2018-10-23 23:21:00,285 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [107], [108], [112], [116], [120], [123], [124], [128], [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], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [663], [665], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-23 23:21:00,373 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:21:00,373 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 23:21:31,453 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 23:21:31,454 INFO L272 AbstractInterpreter]: Visited 128 different actions 250 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-10-23 23:21:31,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:21:31,468 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 23:21:38,984 INFO L232 lantSequenceWeakener]: Weakened 52 states. On average, predicates are now at 82.75% of their original sizes. [2018-10-23 23:21:38,984 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 23:23:21,443 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 23:23:21,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 23:23:21,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-10-23 23:23:21,444 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:23:21,445 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-23 23:23:21,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-23 23:23:21,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2018-10-23 23:23:21,446 INFO L87 Difference]: Start difference. First operand 1558 states and 2225 transitions. Second operand 22 states. Received shutdown request... [2018-10-23 23:24:48,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-23 23:24:48,449 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:24:48,454 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:24:48,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:24:48 BoogieIcfgContainer [2018-10-23 23:24:48,455 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:24:48,456 INFO L168 Benchmark]: Toolchain (without parser) took 249454.19 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 677.4 MB. Max. memory is 7.1 GB. [2018-10-23 23:24:48,457 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:24:48,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 690.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:24:48,459 INFO L168 Benchmark]: Boogie Procedure Inliner took 188.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.2 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:24:48,460 INFO L168 Benchmark]: Boogie Preprocessor took 65.93 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 23:24:48,460 INFO L168 Benchmark]: RCFGBuilder took 3275.42 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: 103.7 MB). Peak memory consumption was 103.7 MB. Max. memory is 7.1 GB. [2018-10-23 23:24:48,461 INFO L168 Benchmark]: TraceAbstraction took 245223.55 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 636.1 MB. Max. memory is 7.1 GB. [2018-10-23 23:24:48,466 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 690.32 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 188.92 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -829.2 MB). Peak memory consumption was 18.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.93 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 3275.42 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: 103.7 MB). Peak memory consumption was 103.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 245223.55 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 636.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 523]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 523). Cancelled while BasicCegarLoop was constructing difference of abstraction (1558states) and FLOYD_HOARE automaton (currently 21 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (368 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 245.1s OverallTime, 8 OverallIterations, 3 TraceHistogramMax, 100.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 893 SDtfs, 4411 SDslu, 728 SDs, 0 SdLazy, 5507 SolverSat, 1105 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 52.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 251 GetRequests, 174 SyntacticMatches, 23 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 107.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1558occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 31.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9951003635214165 AbsIntWeakeningRatio, 0.1746031746031746 AbsIntAvgWeakeningVarsNumRemoved, 472.44973544973544 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 7 MinimizatonAttempts, 40 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1188 NumberOfCodeBlocks, 1188 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1180 ConstructedInterpolants, 0 QuantifiedInterpolants, 1212975 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 201/203 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown