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/Problem03_label12_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 23:34:37,123 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 23:34:37,125 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 23:34:37,143 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 23:34:37,143 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 23:34:37,144 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 23:34:37,147 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 23:34:37,148 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 23:34:37,150 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 23:34:37,151 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 23:34:37,152 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 23:34:37,152 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 23:34:37,153 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 23:34:37,154 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 23:34:37,155 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 23:34:37,156 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 23:34:37,157 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 23:34:37,159 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 23:34:37,161 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 23:34:37,162 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 23:34:37,163 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 23:34:37,165 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 23:34:37,167 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 23:34:37,177 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-23 23:34:37,178 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-23 23:34:37,180 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-23 23:34:37,181 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-23 23:34:37,181 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 23:34:37,213 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 23:34:37,214 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 23:34:37,215 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 23:34:37,215 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 23:34:37,215 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 23:34:37,216 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 23:34:37,216 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 23:34:37,216 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 23:34:37,216 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 23:34:37,216 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 23:34:37,216 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 23:34:37,217 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 23:34:37,217 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 23:34:37,217 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 23:34:37,218 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 23:34:37,218 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 23:34:37,218 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 23:34:37,218 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 23:34:37,218 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 23:34:37,219 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 23:34:37,219 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 23:34:37,219 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 23:34:37,219 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 23:34:37,219 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 23:34:37,220 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 23:34:37,220 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 23:34:37,220 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 23:34:37,220 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 23:34:37,220 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 23:34:37,221 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 23:34:37,221 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 23:34:37,221 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 23:34:37,221 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 23:34:37,221 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 23:34:37,287 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 23:34:37,305 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 23:34:37,309 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 23:34:37,310 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 23:34:37,311 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 23:34:37,312 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label12_true-unreach-call.c [2018-10-23 23:34:37,379 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6a9dde592/42a7171434434b43b105615f767887cc/FLAG05026d9e7 [2018-10-23 23:34:38,045 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 23:34:38,046 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label12_true-unreach-call.c [2018-10-23 23:34:38,074 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6a9dde592/42a7171434434b43b105615f767887cc/FLAG05026d9e7 [2018-10-23 23:34:38,097 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6a9dde592/42a7171434434b43b105615f767887cc [2018-10-23 23:34:38,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 23:34:38,115 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 23:34:38,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 23:34:38,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 23:34:38,120 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 23:34:38,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:34:38" (1/1) ... [2018-10-23 23:34:38,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d35362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:38, skipping insertion in model container [2018-10-23 23:34:38,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 11:34:38" (1/1) ... [2018-10-23 23:34:38,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 23:34:38,228 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 23:34:39,050 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:34:39,056 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 23:34:39,294 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 23:34:39,318 INFO L193 MainTranslator]: Completed translation [2018-10-23 23:34:39,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:39 WrapperNode [2018-10-23 23:34:39,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 23:34:39,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 23:34:39,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 23:34:39,321 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 23:34:39,331 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:39" (1/1) ... [2018-10-23 23:34:39,370 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:39" (1/1) ... [2018-10-23 23:34:39,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 23:34:39,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 23:34:39,644 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 23:34:39,645 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 23:34:39,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:39" (1/1) ... [2018-10-23 23:34:39,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:39" (1/1) ... [2018-10-23 23:34:39,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:39" (1/1) ... [2018-10-23 23:34:39,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:39" (1/1) ... [2018-10-23 23:34:39,743 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:39" (1/1) ... [2018-10-23 23:34:39,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:39" (1/1) ... [2018-10-23 23:34:39,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:39" (1/1) ... [2018-10-23 23:34:39,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 23:34:39,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 23:34:39,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 23:34:39,800 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 23:34:39,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:39" (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 23:34:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 23:34:39,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 23:34:39,874 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 23:34:39,874 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 23:34:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 23:34:39,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 23:34:39,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 23:34:39,875 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 23:34:45,714 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 23:34:45,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:34:45 BoogieIcfgContainer [2018-10-23 23:34:45,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 23:34:45,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 23:34:45,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 23:34:45,724 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 23:34:45,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 11:34:38" (1/3) ... [2018-10-23 23:34:45,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfbbe3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:34:45, skipping insertion in model container [2018-10-23 23:34:45,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 11:34:39" (2/3) ... [2018-10-23 23:34:45,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dfbbe3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 11:34:45, skipping insertion in model container [2018-10-23 23:34:45,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 11:34:45" (3/3) ... [2018-10-23 23:34:45,732 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label12_true-unreach-call.c [2018-10-23 23:34:45,745 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 23:34:45,758 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 23:34:45,777 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 23:34:45,833 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 23:34:45,834 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 23:34:45,834 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 23:34:45,834 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 23:34:45,834 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 23:34:45,834 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 23:34:45,835 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 23:34:45,835 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 23:34:45,886 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-23 23:34:45,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-10-23 23:34:45,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:34:45,911 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:45,914 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:34:45,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:34:45,921 INFO L82 PathProgramCache]: Analyzing trace with hash -927745007, now seen corresponding path program 1 times [2018-10-23 23:34:45,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:34:45,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:34:45,988 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:34:45,988 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:34:45,988 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:34:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:34:46,887 WARN L179 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:34:47,128 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 23:34:47,131 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:34:47,132 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:34:47,132 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:34:47,141 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:34:47,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:34:47,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:34:47,169 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-23 23:34:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:34:49,379 INFO L93 Difference]: Finished difference Result 845 states and 1487 transitions. [2018-10-23 23:34:49,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:34:49,383 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2018-10-23 23:34:49,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:34:49,406 INFO L225 Difference]: With dead ends: 845 [2018-10-23 23:34:49,407 INFO L226 Difference]: Without dead ends: 531 [2018-10-23 23:34:49,415 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 23:34:49,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-10-23 23:34:49,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 530. [2018-10-23 23:34:49,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-10-23 23:34:49,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 869 transitions. [2018-10-23 23:34:49,510 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 869 transitions. Word has length 170 [2018-10-23 23:34:49,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:34:49,512 INFO L481 AbstractCegarLoop]: Abstraction has 530 states and 869 transitions. [2018-10-23 23:34:49,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:34:49,512 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 869 transitions. [2018-10-23 23:34:49,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-10-23 23:34:49,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:34:49,521 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:49,521 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:34:49,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:34:49,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1807947448, now seen corresponding path program 1 times [2018-10-23 23:34:49,522 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:34:49,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:34:49,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:34:49,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:34:49,524 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:34:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:34:49,884 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:34:49,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:34:49,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:34:49,885 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:34:49,887 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:34:49,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:34:49,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:34:49,888 INFO L87 Difference]: Start difference. First operand 530 states and 869 transitions. Second operand 6 states. [2018-10-23 23:34:53,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:34:53,816 INFO L93 Difference]: Finished difference Result 1599 states and 2688 transitions. [2018-10-23 23:34:53,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-23 23:34:53,817 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2018-10-23 23:34:53,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:34:53,831 INFO L225 Difference]: With dead ends: 1599 [2018-10-23 23:34:53,832 INFO L226 Difference]: Without dead ends: 1075 [2018-10-23 23:34:53,835 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 23:34:53,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2018-10-23 23:34:53,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1034. [2018-10-23 23:34:53,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2018-10-23 23:34:53,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1689 transitions. [2018-10-23 23:34:53,903 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1689 transitions. Word has length 180 [2018-10-23 23:34:53,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:34:53,903 INFO L481 AbstractCegarLoop]: Abstraction has 1034 states and 1689 transitions. [2018-10-23 23:34:53,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:34:53,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1689 transitions. [2018-10-23 23:34:53,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-10-23 23:34:53,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:34:53,912 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:53,912 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:34:53,913 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:34:53,913 INFO L82 PathProgramCache]: Analyzing trace with hash 479453333, now seen corresponding path program 1 times [2018-10-23 23:34:53,913 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:34:53,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:34:53,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:34:53,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:34:53,915 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:34:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:34:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:34:54,325 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:34:54,325 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 23:34:54,325 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:34:54,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 23:34:54,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 23:34:54,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:34:54,331 INFO L87 Difference]: Start difference. First operand 1034 states and 1689 transitions. Second operand 3 states. [2018-10-23 23:34:57,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:34:57,426 INFO L93 Difference]: Finished difference Result 2912 states and 4936 transitions. [2018-10-23 23:34:57,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 23:34:57,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 183 [2018-10-23 23:34:57,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:34:57,460 INFO L225 Difference]: With dead ends: 2912 [2018-10-23 23:34:57,460 INFO L226 Difference]: Without dead ends: 1884 [2018-10-23 23:34:57,473 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 23:34:57,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2018-10-23 23:34:57,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1881. [2018-10-23 23:34:57,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1881 states. [2018-10-23 23:34:57,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2981 transitions. [2018-10-23 23:34:57,553 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2981 transitions. Word has length 183 [2018-10-23 23:34:57,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:34:57,554 INFO L481 AbstractCegarLoop]: Abstraction has 1881 states and 2981 transitions. [2018-10-23 23:34:57,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 23:34:57,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2981 transitions. [2018-10-23 23:34:57,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-23 23:34:57,563 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:34:57,563 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:57,564 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:34:57,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:34:57,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1957803305, now seen corresponding path program 1 times [2018-10-23 23:34:57,565 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:34:57,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:34:57,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:34:57,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:34:57,567 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:34:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:34:58,103 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-23 23:34:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:34:58,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:34:58,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-23 23:34:58,450 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:34:58,451 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 23:34:58,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 23:34:58,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-23 23:34:58,452 INFO L87 Difference]: Start difference. First operand 1881 states and 2981 transitions. Second operand 7 states. [2018-10-23 23:35:01,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:35:01,212 INFO L93 Difference]: Finished difference Result 5729 states and 9791 transitions. [2018-10-23 23:35:01,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:35:01,217 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2018-10-23 23:35:01,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:35:01,250 INFO L225 Difference]: With dead ends: 5729 [2018-10-23 23:35:01,250 INFO L226 Difference]: Without dead ends: 3854 [2018-10-23 23:35:01,259 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:35:01,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3854 states. [2018-10-23 23:35:01,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3854 to 3744. [2018-10-23 23:35:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3744 states. [2018-10-23 23:35:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 6108 transitions. [2018-10-23 23:35:01,426 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 6108 transitions. Word has length 189 [2018-10-23 23:35:01,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:35:01,427 INFO L481 AbstractCegarLoop]: Abstraction has 3744 states and 6108 transitions. [2018-10-23 23:35:01,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 23:35:01,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 6108 transitions. [2018-10-23 23:35:01,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2018-10-23 23:35:01,443 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:35:01,443 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:35:01,443 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:35:01,444 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:35:01,444 INFO L82 PathProgramCache]: Analyzing trace with hash -551348028, now seen corresponding path program 1 times [2018-10-23 23:35:01,444 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:35:01,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:35:01,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:35:01,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:35:01,446 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:35:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:35:01,698 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-23 23:35:01,847 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:35:01,848 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 23:35:01,848 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 23:35:01,848 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 23:35:01,849 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 23:35:01,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 23:35:01,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 23:35:01,849 INFO L87 Difference]: Start difference. First operand 3744 states and 6108 transitions. Second operand 6 states. [2018-10-23 23:35:04,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 23:35:04,377 INFO L93 Difference]: Finished difference Result 8125 states and 13602 transitions. [2018-10-23 23:35:04,378 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 23:35:04,378 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2018-10-23 23:35:04,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 23:35:04,405 INFO L225 Difference]: With dead ends: 8125 [2018-10-23 23:35:04,405 INFO L226 Difference]: Without dead ends: 4387 [2018-10-23 23:35:04,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-23 23:35:04,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4387 states. [2018-10-23 23:35:04,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4387 to 4215. [2018-10-23 23:35:04,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4215 states. [2018-10-23 23:35:04,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4215 states to 4215 states and 6296 transitions. [2018-10-23 23:35:04,588 INFO L78 Accepts]: Start accepts. Automaton has 4215 states and 6296 transitions. Word has length 190 [2018-10-23 23:35:04,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 23:35:04,589 INFO L481 AbstractCegarLoop]: Abstraction has 4215 states and 6296 transitions. [2018-10-23 23:35:04,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 23:35:04,589 INFO L276 IsEmpty]: Start isEmpty. Operand 4215 states and 6296 transitions. [2018-10-23 23:35:04,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-23 23:35:04,602 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 23:35:04,603 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:35:04,603 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 23:35:04,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 23:35:04,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1721729602, now seen corresponding path program 1 times [2018-10-23 23:35:04,604 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 23:35:04,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:35:04,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:35:04,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 23:35:04,605 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 23:35:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:35:04,811 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 23:35:04,811 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:35:04,811 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 23:35:04,812 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 195 with the following transitions: [2018-10-23 23:35:04,815 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [10], [12], [13], [17], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [821], [823], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-23 23:35:04,914 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 23:35:04,914 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-23 23:39:08,909 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-23 23:39:08,910 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-23 23:39:08,911 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-23 23:39:08,912 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 23:39:08,912 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 23:39:08,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 23:39:08,921 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 23:39:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 23:39:09,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 23:39:09,168 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-23 23:39:09,369 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 23:39:09,369 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 23:39:09,376 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 23:39:09,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 11:39:09 BoogieIcfgContainer [2018-10-23 23:39:09,376 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 23:39:09,377 INFO L168 Benchmark]: Toolchain (without parser) took 271263.74 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -113.3 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-23 23:39:09,378 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 23:39:09,379 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1203.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-23 23:39:09,380 INFO L168 Benchmark]: Boogie Procedure Inliner took 323.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -870.4 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-23 23:39:09,381 INFO L168 Benchmark]: Boogie Preprocessor took 154.96 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2018-10-23 23:39:09,382 INFO L168 Benchmark]: RCFGBuilder took 5918.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 273.9 MB). Peak memory consumption was 273.9 MB. Max. memory is 7.1 GB. [2018-10-23 23:39:09,382 INFO L168 Benchmark]: TraceAbstraction took 263656.68 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.1 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 395.4 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-23 23:39:09,388 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 1203.83 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 323.84 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 745.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -870.4 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.96 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: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5918.90 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 273.9 MB). Peak memory consumption was 273.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 263656.68 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.1 GB). Free memory was 1.9 GB in the beginning and 1.5 GB in the end (delta: 395.4 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1524]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1524). Cancelled while BasicCegarLoop was analyzing trace of length 195 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 5 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 263.5s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 14.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1147 SDtfs, 3898 SDslu, 847 SDs, 0 SdLazy, 5527 SolverSat, 770 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4215occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 244.0s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 327 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 912 NumberOfCodeBlocks, 912 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 907 ConstructedInterpolants, 0 QuantifiedInterpolants, 367814 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 50/50 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown