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_label28_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 01:15:11,064 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 01:15:11,066 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 01:15:11,079 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 01:15:11,080 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 01:15:11,081 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 01:15:11,083 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 01:15:11,087 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 01:15:11,090 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 01:15:11,091 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 01:15:11,093 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 01:15:11,093 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 01:15:11,094 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 01:15:11,096 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 01:15:11,097 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 01:15:11,105 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 01:15:11,106 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 01:15:11,110 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 01:15:11,114 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 01:15:11,115 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 01:15:11,119 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 01:15:11,120 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 01:15:11,122 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 01:15:11,136 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 01:15:11,136 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 01:15:11,137 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 01:15:11,139 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 01:15:11,140 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 01:15:11,166 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 01:15:11,166 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 01:15:11,167 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 01:15:11,168 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 01:15:11,168 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 01:15:11,168 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 01:15:11,168 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 01:15:11,169 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 01:15:11,169 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 01:15:11,169 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 01:15:11,169 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 01:15:11,169 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 01:15:11,171 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 01:15:11,172 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 01:15:11,173 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 01:15:11,173 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 01:15:11,173 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 01:15:11,173 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 01:15:11,173 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 01:15:11,174 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 01:15:11,174 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 01:15:11,174 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 01:15:11,174 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 01:15:11,174 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 01:15:11,175 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 01:15:11,176 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 01:15:11,176 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 01:15:11,176 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 01:15:11,177 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 01:15:11,177 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 01:15:11,177 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 01:15:11,177 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 01:15:11,178 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 01:15:11,178 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 01:15:11,244 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 01:15:11,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 01:15:11,267 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 01:15:11,269 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 01:15:11,269 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 01:15:11,270 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label28_true-unreach-call_false-termination.c [2018-11-07 01:15:11,338 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08269b33f/d71db2acd177459bbc2ab47b97db93d6/FLAG91701daf9 [2018-11-07 01:15:11,946 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 01:15:11,950 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label28_true-unreach-call_false-termination.c [2018-11-07 01:15:11,976 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08269b33f/d71db2acd177459bbc2ab47b97db93d6/FLAG91701daf9 [2018-11-07 01:15:11,997 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/08269b33f/d71db2acd177459bbc2ab47b97db93d6 [2018-11-07 01:15:12,010 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 01:15:12,011 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 01:15:12,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 01:15:12,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 01:15:12,017 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 01:15:12,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:15:11" (1/1) ... [2018-11-07 01:15:12,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b7df7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:12, skipping insertion in model container [2018-11-07 01:15:12,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:15:11" (1/1) ... [2018-11-07 01:15:12,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 01:15:12,089 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 01:15:12,591 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:15:12,596 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 01:15:12,792 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:15:12,810 INFO L193 MainTranslator]: Completed translation [2018-11-07 01:15:12,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:12 WrapperNode [2018-11-07 01:15:12,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 01:15:12,812 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 01:15:12,812 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 01:15:12,812 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 01:15:12,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:12" (1/1) ... [2018-11-07 01:15:12,934 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:12" (1/1) ... [2018-11-07 01:15:12,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 01:15:12,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 01:15:12,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 01:15:12,955 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 01:15:12,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:12" (1/1) ... [2018-11-07 01:15:12,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:12" (1/1) ... [2018-11-07 01:15:12,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:12" (1/1) ... [2018-11-07 01:15:12,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:12" (1/1) ... [2018-11-07 01:15:13,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:12" (1/1) ... [2018-11-07 01:15:13,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:12" (1/1) ... [2018-11-07 01:15:13,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:12" (1/1) ... [2018-11-07 01:15:13,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 01:15:13,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 01:15:13,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 01:15:13,063 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 01:15:13,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:12" (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 01:15:13,137 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 01:15:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 01:15:13,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 01:15:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 01:15:13,138 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 01:15:13,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 01:15:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 01:15:13,139 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 01:15:13,139 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 01:15:16,292 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 01:15:16,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:16 BoogieIcfgContainer [2018-11-07 01:15:16,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 01:15:16,295 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 01:15:16,295 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 01:15:16,299 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 01:15:16,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:15:11" (1/3) ... [2018-11-07 01:15:16,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca5f8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:16, skipping insertion in model container [2018-11-07 01:15:16,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:15:12" (2/3) ... [2018-11-07 01:15:16,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca5f8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:15:16, skipping insertion in model container [2018-11-07 01:15:16,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:15:16" (3/3) ... [2018-11-07 01:15:16,309 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label28_true-unreach-call_false-termination.c [2018-11-07 01:15:16,321 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 01:15:16,333 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 01:15:16,353 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 01:15:16,404 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 01:15:16,405 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 01:15:16,405 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 01:15:16,405 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 01:15:16,406 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 01:15:16,406 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 01:15:16,406 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 01:15:16,406 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 01:15:16,456 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-11-07 01:15:16,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 01:15:16,477 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:15:16,481 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, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:15:16,484 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:15:16,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:15:16,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1188010863, now seen corresponding path program 1 times [2018-11-07 01:15:16,498 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:15:16,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:16,564 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:15:16,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:16,564 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:15:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:15:17,211 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:15:17,287 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 01:15:17,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:15:17,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 01:15:17,291 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:15:17,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 01:15:17,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 01:15:17,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 01:15:17,317 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-11-07 01:15:18,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:15:18,957 INFO L93 Difference]: Finished difference Result 618 states and 1056 transitions. [2018-11-07 01:15:18,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 01:15:18,959 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2018-11-07 01:15:18,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:15:18,980 INFO L225 Difference]: With dead ends: 618 [2018-11-07 01:15:18,980 INFO L226 Difference]: Without dead ends: 379 [2018-11-07 01:15:18,989 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 01:15:19,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-11-07 01:15:19,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-11-07 01:15:19,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-11-07 01:15:19,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 621 transitions. [2018-11-07 01:15:19,077 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 621 transitions. Word has length 131 [2018-11-07 01:15:19,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:15:19,079 INFO L480 AbstractCegarLoop]: Abstraction has 379 states and 621 transitions. [2018-11-07 01:15:19,079 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 01:15:19,079 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 621 transitions. [2018-11-07 01:15:19,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 01:15:19,093 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:15:19,093 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:15:19,094 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:15:19,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:15:19,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1256593146, now seen corresponding path program 1 times [2018-11-07 01:15:19,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:15:19,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:19,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:15:19,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:19,098 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:15:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:15:19,392 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 01:15:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:15:19,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:15:19,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:15:19,497 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:15:19,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:15:19,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:15:19,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:15:19,501 INFO L87 Difference]: Start difference. First operand 379 states and 621 transitions. Second operand 6 states. [2018-11-07 01:15:21,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:15:21,817 INFO L93 Difference]: Finished difference Result 1229 states and 2094 transitions. [2018-11-07 01:15:21,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 01:15:21,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2018-11-07 01:15:21,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:15:21,831 INFO L225 Difference]: With dead ends: 1229 [2018-11-07 01:15:21,831 INFO L226 Difference]: Without dead ends: 856 [2018-11-07 01:15:21,841 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 01:15:21,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2018-11-07 01:15:21,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 823. [2018-11-07 01:15:21,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2018-11-07 01:15:21,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1292 transitions. [2018-11-07 01:15:21,911 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1292 transitions. Word has length 147 [2018-11-07 01:15:21,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:15:21,912 INFO L480 AbstractCegarLoop]: Abstraction has 823 states and 1292 transitions. [2018-11-07 01:15:21,912 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:15:21,913 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1292 transitions. [2018-11-07 01:15:21,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-11-07 01:15:21,918 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:15:21,919 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, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:15:21,919 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:15:21,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:15:21,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1655989221, now seen corresponding path program 1 times [2018-11-07 01:15:21,920 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:15:21,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:21,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:15:21,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:21,922 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:15:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:15:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:15:22,179 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:15:22,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:15:22,180 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:15:22,181 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:15:22,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:15:22,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:15:22,182 INFO L87 Difference]: Start difference. First operand 823 states and 1292 transitions. Second operand 6 states. [2018-11-07 01:15:27,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:15:27,232 INFO L93 Difference]: Finished difference Result 2557 states and 4222 transitions. [2018-11-07 01:15:27,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 01:15:27,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-11-07 01:15:27,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:15:27,258 INFO L225 Difference]: With dead ends: 2557 [2018-11-07 01:15:27,258 INFO L226 Difference]: Without dead ends: 1740 [2018-11-07 01:15:27,265 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 01:15:27,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2018-11-07 01:15:27,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1682. [2018-11-07 01:15:27,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2018-11-07 01:15:27,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2540 transitions. [2018-11-07 01:15:27,351 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2540 transitions. Word has length 154 [2018-11-07 01:15:27,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:15:27,352 INFO L480 AbstractCegarLoop]: Abstraction has 1682 states and 2540 transitions. [2018-11-07 01:15:27,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:15:27,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2540 transitions. [2018-11-07 01:15:27,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-07 01:15:27,363 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:15:27,364 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2018-11-07 01:15:27,364 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:15:27,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:15:27,368 INFO L82 PathProgramCache]: Analyzing trace with hash -908866867, now seen corresponding path program 1 times [2018-11-07 01:15:27,368 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:15:27,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:27,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:15:27,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:15:27,370 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:15:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:15:27,607 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:15:27,646 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 01:15:27,646 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:15:27,647 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:15:27,648 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 157 with the following transitions: [2018-11-07 01:15:27,650 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [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], [667], [675], [683], [691], [699], [707], [715], [719], [721], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-11-07 01:15:27,746 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:15:27,746 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 01:15:42,704 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 01:15:42,706 INFO L272 AbstractInterpreter]: Visited 132 different actions 132 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-11-07 01:15:42,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:15:42,720 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 01:15:48,034 INFO L227 lantSequenceWeakener]: Weakened 135 states. On average, predicates are now at 81.59% of their original sizes. [2018-11-07 01:15:48,034 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 01:15:51,556 INFO L415 sIntCurrentIteration]: We unified 155 AI predicates to 155 [2018-11-07 01:15:51,557 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 01:15:51,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 01:15:51,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-11-07 01:15:51,558 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:15:51,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-07 01:15:51,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-07 01:15:51,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-11-07 01:15:51,560 INFO L87 Difference]: Start difference. First operand 1682 states and 2540 transitions. Second operand 14 states. [2018-11-07 01:17:53,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:17:53,862 INFO L93 Difference]: Finished difference Result 3656 states and 5500 transitions. [2018-11-07 01:17:53,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 01:17:53,862 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 156 [2018-11-07 01:17:53,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:17:53,873 INFO L225 Difference]: With dead ends: 3656 [2018-11-07 01:17:53,873 INFO L226 Difference]: Without dead ends: 1980 [2018-11-07 01:17:53,880 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 168 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2018-11-07 01:17:53,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2018-11-07 01:17:54,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1827. [2018-11-07 01:17:54,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1827 states. [2018-11-07 01:17:54,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2692 transitions. [2018-11-07 01:17:54,016 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2692 transitions. Word has length 156 [2018-11-07 01:17:54,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:17:54,016 INFO L480 AbstractCegarLoop]: Abstraction has 1827 states and 2692 transitions. [2018-11-07 01:17:54,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-07 01:17:54,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2692 transitions. [2018-11-07 01:17:54,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-11-07 01:17:54,024 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:17:54,025 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:17:54,025 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:17:54,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:17:54,025 INFO L82 PathProgramCache]: Analyzing trace with hash 352439598, now seen corresponding path program 1 times [2018-11-07 01:17:54,026 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:17:54,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:17:54,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:17:54,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:17:54,027 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:17:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:17:54,353 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 01:17:54,354 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:17:54,354 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:17:54,354 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 167 with the following transitions: [2018-11-07 01:17:54,355 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [9], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [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], [667], [675], [683], [691], [699], [707], [715], [719], [721], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-11-07 01:17:54,363 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:17:54,363 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 01:19:02,935 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 01:19:02,935 INFO L272 AbstractInterpreter]: Visited 136 different actions 532 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-11-07 01:19:02,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:19:02,942 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 01:19:14,007 INFO L227 lantSequenceWeakener]: Weakened 48 states. On average, predicates are now at 83.33% of their original sizes. [2018-11-07 01:19:14,008 INFO L413 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-11-07 01:19:28,131 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 01:19:28,136 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 01:19:28,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:19:28 BoogieIcfgContainer [2018-11-07 01:19:28,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 01:19:28,137 INFO L168 Benchmark]: Toolchain (without parser) took 256127.22 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 630.9 MB. Max. memory is 7.1 GB. [2018-11-07 01:19:28,139 INFO L168 Benchmark]: CDTParser took 0.21 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 01:19:28,139 INFO L168 Benchmark]: CACSL2BoogieTranslator took 799.25 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 01:19:28,140 INFO L168 Benchmark]: Boogie Procedure Inliner took 142.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -823.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2018-11-07 01:19:28,141 INFO L168 Benchmark]: Boogie Preprocessor took 107.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2018-11-07 01:19:28,142 INFO L168 Benchmark]: RCFGBuilder took 3231.56 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: 116.4 MB). Peak memory consumption was 116.4 MB. Max. memory is 7.1 GB. [2018-11-07 01:19:28,143 INFO L168 Benchmark]: TraceAbstraction took 251841.58 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 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 559.3 MB. Max. memory is 7.1 GB. [2018-11-07 01:19:28,148 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 799.25 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 142.31 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 733.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -823.5 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.27 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3231.56 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: 116.4 MB). Peak memory consumption was 116.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 251841.58 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 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 559.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 544]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 544). Cancelled while BasicCegarLoop was analyzing trace of length 167 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 251.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 131.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 649 SDtfs, 2980 SDslu, 605 SDs, 0 SdLazy, 2774 SolverSat, 685 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 85.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 193 GetRequests, 149 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 7.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1827occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 83.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9940456081081075 AbsIntWeakeningRatio, 0.225 AbsIntAvgWeakeningVarsNumRemoved, 732.30625 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 244 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 588 NumberOfCodeBlocks, 588 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 584 ConstructedInterpolants, 0 QuantifiedInterpolants, 187112 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 59/61 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown