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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label13_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:22:06,110 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:22:06,112 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:22:06,126 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:22:06,126 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:22:06,127 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:22:06,129 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:22:06,131 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:22:06,132 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:22:06,133 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:22:06,134 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:22:06,134 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:22:06,135 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:22:06,136 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:22:06,137 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:22:06,138 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:22:06,139 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:22:06,141 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:22:06,143 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:22:06,144 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:22:06,145 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:22:06,147 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:22:06,149 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 06:22:06,149 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 06:22:06,150 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 06:22:06,150 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 06:22:06,151 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 06:22:06,152 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 06:22:06,153 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 06:22:06,154 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 06:22:06,154 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 06:22:06,155 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 06:22:06,155 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 06:22:06,155 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 06:22:06,156 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 06:22:06,157 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 06:22:06,157 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 06:22:06,182 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:22:06,183 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:22:06,184 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:22:06,184 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:22:06,184 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:22:06,185 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:22:06,185 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:22:06,185 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:22:06,185 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:22:06,185 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:22:06,185 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:22:06,186 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:22:06,186 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:22:06,186 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:22:06,187 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:22:06,187 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:22:06,187 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:22:06,187 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:22:06,188 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:22:06,188 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:22:06,188 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:22:06,188 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:22:06,188 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:22:06,189 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:22:06,190 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:22:06,190 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:22:06,190 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:22:06,191 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:22:06,191 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:22:06,191 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:22:06,191 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:22:06,191 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:22:06,192 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:22:06,192 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:22:06,192 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:22:06,193 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:22:06,256 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:22:06,274 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:22:06,278 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:22:06,279 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:22:06,280 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:22:06,281 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label13_false-unreach-call_false-termination.c [2018-11-07 06:22:06,347 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a0bb2d8f/99cc34a315394da39ae4d033b08e51aa/FLAGaeacf0afd [2018-11-07 06:22:06,930 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:22:06,931 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label13_false-unreach-call_false-termination.c [2018-11-07 06:22:06,954 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a0bb2d8f/99cc34a315394da39ae4d033b08e51aa/FLAGaeacf0afd [2018-11-07 06:22:06,975 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a0bb2d8f/99cc34a315394da39ae4d033b08e51aa [2018-11-07 06:22:06,989 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:22:06,991 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:22:06,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:22:06,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:22:06,998 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:22:06,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:22:06" (1/1) ... [2018-11-07 06:22:07,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3935d1c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:22:07, skipping insertion in model container [2018-11-07 06:22:07,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:22:06" (1/1) ... [2018-11-07 06:22:07,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:22:07,104 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:22:07,620 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:22:07,624 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:22:07,769 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:22:07,792 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:22:07,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:22:07 WrapperNode [2018-11-07 06:22:07,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:22:07,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:22:07,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:22:07,795 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:22:07,807 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:22:07" (1/1) ... [2018-11-07 06:22:07,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:22:07" (1/1) ... [2018-11-07 06:22:07,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:22:07,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:22:07,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:22:07,979 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:22:07,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:22:07" (1/1) ... [2018-11-07 06:22:07,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:22:07" (1/1) ... [2018-11-07 06:22:08,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:22:07" (1/1) ... [2018-11-07 06:22:08,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:22:07" (1/1) ... [2018-11-07 06:22:08,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:22:07" (1/1) ... [2018-11-07 06:22:08,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:22:07" (1/1) ... [2018-11-07 06:22:08,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:22:07" (1/1) ... [2018-11-07 06:22:08,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:22:08,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:22:08,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:22:08,087 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:22:08,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:22:07" (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 06:22:08,159 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:22:08,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:22:08,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:22:08,160 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:22:08,161 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:22:08,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:22:08,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:22:08,161 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:22:08,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:22:12,238 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:22:12,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:22:12 BoogieIcfgContainer [2018-11-07 06:22:12,239 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:22:12,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:22:12,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:22:12,244 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:22:12,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:22:06" (1/3) ... [2018-11-07 06:22:12,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c65f22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:22:12, skipping insertion in model container [2018-11-07 06:22:12,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:22:07" (2/3) ... [2018-11-07 06:22:12,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c65f22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:22:12, skipping insertion in model container [2018-11-07 06:22:12,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:22:12" (3/3) ... [2018-11-07 06:22:12,249 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label13_false-unreach-call_false-termination.c [2018-11-07 06:22:12,260 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:22:12,269 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:22:12,288 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:22:12,329 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:22:12,329 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:22:12,329 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:22:12,330 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:22:12,330 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:22:12,330 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:22:12,330 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:22:12,330 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:22:12,360 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 06:22:12,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-07 06:22:12,368 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:22:12,370 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] [2018-11-07 06:22:12,373 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:22:12,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:22:12,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1859951889, now seen corresponding path program 1 times [2018-11-07 06:22:12,383 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:22:12,445 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:22:12,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:22:12,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:22:12,446 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:22:12,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:22:12,844 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 06:22:12,955 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 06:22:12,957 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:22:12,958 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 06:22:12,958 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:22:12,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:22:12,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:22:12,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:22:12,986 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-07 06:22:14,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:22:14,992 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-07 06:22:14,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:22:14,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2018-11-07 06:22:14,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:22:15,017 INFO L225 Difference]: With dead ends: 691 [2018-11-07 06:22:15,017 INFO L226 Difference]: Without dead ends: 434 [2018-11-07 06:22:15,032 INFO L604 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 [2018-11-07 06:22:15,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-07 06:22:15,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-07 06:22:15,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-07 06:22:15,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-07 06:22:15,120 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 31 [2018-11-07 06:22:15,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:22:15,121 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-07 06:22:15,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:22:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-07 06:22:15,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-07 06:22:15,127 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:22:15,128 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:22:15,128 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:22:15,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:22:15,129 INFO L82 PathProgramCache]: Analyzing trace with hash -984490100, now seen corresponding path program 1 times [2018-11-07 06:22:15,129 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:22:15,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:22:15,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:22:15,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:22:15,131 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:22:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:22:15,409 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:22:15,410 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:22:15,410 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 06:22:15,410 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:22:15,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:22:15,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:22:15,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:22:15,413 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-07 06:22:20,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:22:20,355 INFO L93 Difference]: Finished difference Result 1588 states and 2935 transitions. [2018-11-07 06:22:20,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 06:22:20,356 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-11-07 06:22:20,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:22:20,367 INFO L225 Difference]: With dead ends: 1588 [2018-11-07 06:22:20,368 INFO L226 Difference]: Without dead ends: 1160 [2018-11-07 06:22:20,373 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:22:20,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1160 states. [2018-11-07 06:22:20,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1160 to 1153. [2018-11-07 06:22:20,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1153 states. [2018-11-07 06:22:20,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1887 transitions. [2018-11-07 06:22:20,464 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1887 transitions. Word has length 101 [2018-11-07 06:22:20,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:22:20,465 INFO L480 AbstractCegarLoop]: Abstraction has 1153 states and 1887 transitions. [2018-11-07 06:22:20,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:22:20,465 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1887 transitions. [2018-11-07 06:22:20,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-07 06:22:20,472 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:22:20,473 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:22:20,473 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:22:20,473 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:22:20,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1471379143, now seen corresponding path program 1 times [2018-11-07 06:22:20,476 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:22:20,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:22:20,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:22:20,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:22:20,478 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:22:20,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:22:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:22:20,845 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:22:20,845 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 06:22:20,845 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:22:20,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 06:22:20,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 06:22:20,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 06:22:20,847 INFO L87 Difference]: Start difference. First operand 1153 states and 1887 transitions. Second operand 5 states. [2018-11-07 06:22:24,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:22:24,650 INFO L93 Difference]: Finished difference Result 2716 states and 4601 transitions. [2018-11-07 06:22:24,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 06:22:24,654 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2018-11-07 06:22:24,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:22:24,673 INFO L225 Difference]: With dead ends: 2716 [2018-11-07 06:22:24,674 INFO L226 Difference]: Without dead ends: 1569 [2018-11-07 06:22:24,679 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 06:22:24,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2018-11-07 06:22:24,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1538. [2018-11-07 06:22:24,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1538 states. [2018-11-07 06:22:24,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2356 transitions. [2018-11-07 06:22:24,756 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2356 transitions. Word has length 102 [2018-11-07 06:22:24,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:22:24,756 INFO L480 AbstractCegarLoop]: Abstraction has 1538 states and 2356 transitions. [2018-11-07 06:22:24,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 06:22:24,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2356 transitions. [2018-11-07 06:22:24,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-07 06:22:24,762 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:22:24,763 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:22:24,768 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:22:24,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:22:24,768 INFO L82 PathProgramCache]: Analyzing trace with hash -552645141, now seen corresponding path program 1 times [2018-11-07 06:22:24,768 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:22:24,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:22:24,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:22:24,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:22:24,770 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:22:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:22:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:22:24,966 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:22:24,966 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 06:22:24,966 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:22:24,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 06:22:24,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 06:22:24,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 06:22:24,968 INFO L87 Difference]: Start difference. First operand 1538 states and 2356 transitions. Second operand 5 states. [2018-11-07 06:22:27,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:22:27,469 INFO L93 Difference]: Finished difference Result 4198 states and 6461 transitions. [2018-11-07 06:22:27,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 06:22:27,469 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 104 [2018-11-07 06:22:27,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:22:27,488 INFO L225 Difference]: With dead ends: 4198 [2018-11-07 06:22:27,488 INFO L226 Difference]: Without dead ends: 2666 [2018-11-07 06:22:27,500 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 06:22:27,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2018-11-07 06:22:27,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2560. [2018-11-07 06:22:27,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2560 states. [2018-11-07 06:22:27,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2560 states to 2560 states and 3629 transitions. [2018-11-07 06:22:27,585 INFO L78 Accepts]: Start accepts. Automaton has 2560 states and 3629 transitions. Word has length 104 [2018-11-07 06:22:27,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:22:27,586 INFO L480 AbstractCegarLoop]: Abstraction has 2560 states and 3629 transitions. [2018-11-07 06:22:27,586 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 06:22:27,586 INFO L276 IsEmpty]: Start isEmpty. Operand 2560 states and 3629 transitions. [2018-11-07 06:22:27,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-11-07 06:22:27,588 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:22:27,588 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:22:27,589 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:22:27,589 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:22:27,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1700956756, now seen corresponding path program 1 times [2018-11-07 06:22:27,589 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:22:27,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:22:27,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:22:27,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:22:27,591 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:22:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:22:27,779 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:22:27,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:22:27,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:22:27,780 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:22:27,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:22:27,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:22:27,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:22:27,781 INFO L87 Difference]: Start difference. First operand 2560 states and 3629 transitions. Second operand 4 states. [2018-11-07 06:22:30,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:22:30,034 INFO L93 Difference]: Finished difference Result 7205 states and 10610 transitions. [2018-11-07 06:22:30,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:22:30,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 105 [2018-11-07 06:22:30,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:22:30,071 INFO L225 Difference]: With dead ends: 7205 [2018-11-07 06:22:30,072 INFO L226 Difference]: Without dead ends: 4651 [2018-11-07 06:22:30,096 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:22:30,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4651 states. [2018-11-07 06:22:30,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4651 to 4651. [2018-11-07 06:22:30,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4651 states. [2018-11-07 06:22:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4651 states to 4651 states and 6458 transitions. [2018-11-07 06:22:30,249 INFO L78 Accepts]: Start accepts. Automaton has 4651 states and 6458 transitions. Word has length 105 [2018-11-07 06:22:30,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:22:30,250 INFO L480 AbstractCegarLoop]: Abstraction has 4651 states and 6458 transitions. [2018-11-07 06:22:30,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:22:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 4651 states and 6458 transitions. [2018-11-07 06:22:30,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-11-07 06:22:30,271 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:22:30,271 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:22:30,271 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:22:30,272 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:22:30,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1300699199, now seen corresponding path program 1 times [2018-11-07 06:22:30,272 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:22:30,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:22:30,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:22:30,316 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:22:30,316 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:22:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:22:30,892 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-11-07 06:22:31,633 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:22:31,634 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:22:31,634 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:22:31,635 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-11-07 06:22:31,637 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:22:31,686 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:22:31,686 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:22:36,373 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:22:36,375 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 06:22:36,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:22:36,435 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:22:40,618 INFO L227 lantSequenceWeakener]: Weakened 240 states. On average, predicates are now at 77.55% of their original sizes. [2018-11-07 06:22:40,619 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:22:40,747 INFO L415 sIntCurrentIteration]: We unified 248 AI predicates to 248 [2018-11-07 06:22:40,747 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:22:40,748 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:22:40,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2018-11-07 06:22:40,749 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:22:40,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:22:40,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:22:40,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:22:40,750 INFO L87 Difference]: Start difference. First operand 4651 states and 6458 transitions. Second operand 6 states. [2018-11-07 06:23:06,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:23:06,524 INFO L93 Difference]: Finished difference Result 9481 states and 13140 transitions. [2018-11-07 06:23:06,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 06:23:06,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 249 [2018-11-07 06:23:06,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:23:06,548 INFO L225 Difference]: With dead ends: 9481 [2018-11-07 06:23:06,548 INFO L226 Difference]: Without dead ends: 4836 [2018-11-07 06:23:06,571 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 249 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 06:23:06,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4836 states. [2018-11-07 06:23:06,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4836 to 4834. [2018-11-07 06:23:06,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4834 states. [2018-11-07 06:23:06,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4834 states to 4834 states and 6649 transitions. [2018-11-07 06:23:06,704 INFO L78 Accepts]: Start accepts. Automaton has 4834 states and 6649 transitions. Word has length 249 [2018-11-07 06:23:06,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:23:06,705 INFO L480 AbstractCegarLoop]: Abstraction has 4834 states and 6649 transitions. [2018-11-07 06:23:06,705 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:23:06,705 INFO L276 IsEmpty]: Start isEmpty. Operand 4834 states and 6649 transitions. [2018-11-07 06:23:06,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2018-11-07 06:23:06,724 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:06,724 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:23:06,725 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:06,725 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:06,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1735802637, now seen corresponding path program 1 times [2018-11-07 06:23:06,726 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:06,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:06,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:06,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:06,727 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:07,283 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:23:07,482 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 06:23:07,677 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 06:23:08,215 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 160 proven. 182 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:23:08,215 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:23:08,216 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:23:08,216 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 335 with the following transitions: [2018-11-07 06:23:08,217 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:23:08,222 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:23:08,223 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:23:12,232 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:23:12,232 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:23:12,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:12,240 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:23:14,531 INFO L227 lantSequenceWeakener]: Weakened 331 states. On average, predicates are now at 77.55% of their original sizes. [2018-11-07 06:23:14,531 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:23:15,040 INFO L415 sIntCurrentIteration]: We unified 333 AI predicates to 333 [2018-11-07 06:23:15,040 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:23:15,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:23:15,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-11-07 06:23:15,041 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:15,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:23:15,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:23:15,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:23:15,042 INFO L87 Difference]: Start difference. First operand 4834 states and 6649 transitions. Second operand 10 states. [2018-11-07 06:24:19,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:24:19,340 INFO L93 Difference]: Finished difference Result 9661 states and 13276 transitions. [2018-11-07 06:24:19,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 06:24:19,341 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 334 [2018-11-07 06:24:19,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:24:19,363 INFO L225 Difference]: With dead ends: 9661 [2018-11-07 06:24:19,363 INFO L226 Difference]: Without dead ends: 5020 [2018-11-07 06:24:19,381 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 342 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:24:19,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5020 states. [2018-11-07 06:24:19,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5020 to 5018. [2018-11-07 06:24:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5018 states. [2018-11-07 06:24:19,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5018 states to 5018 states and 6798 transitions. [2018-11-07 06:24:19,507 INFO L78 Accepts]: Start accepts. Automaton has 5018 states and 6798 transitions. Word has length 334 [2018-11-07 06:24:19,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:24:19,508 INFO L480 AbstractCegarLoop]: Abstraction has 5018 states and 6798 transitions. [2018-11-07 06:24:19,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:24:19,508 INFO L276 IsEmpty]: Start isEmpty. Operand 5018 states and 6798 transitions. [2018-11-07 06:24:19,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2018-11-07 06:24:19,534 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:24:19,534 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:24:19,534 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:24:19,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:19,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1561707318, now seen corresponding path program 1 times [2018-11-07 06:24:19,535 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:24:19,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:19,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:19,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:19,537 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:24:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:20,756 WARN L179 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 06:24:21,325 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 294 proven. 242 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-11-07 06:24:21,325 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:24:21,326 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:24:21,326 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 435 with the following transitions: [2018-11-07 06:24:21,326 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:24:21,331 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:24:21,331 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:24:25,586 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:24:25,586 INFO L272 AbstractInterpreter]: Visited 123 different actions 240 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:24:25,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:25,590 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:24:27,872 INFO L227 lantSequenceWeakener]: Weakened 431 states. On average, predicates are now at 77.52% of their original sizes. [2018-11-07 06:24:27,873 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:24:27,976 INFO L415 sIntCurrentIteration]: We unified 433 AI predicates to 433 [2018-11-07 06:24:27,976 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:24:27,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:24:27,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2018-11-07 06:24:27,977 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:24:27,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:24:27,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:24:27,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:24:27,978 INFO L87 Difference]: Start difference. First operand 5018 states and 6798 transitions. Second operand 10 states. [2018-11-07 06:24:57,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:24:57,889 INFO L93 Difference]: Finished difference Result 9477 states and 13004 transitions. [2018-11-07 06:24:57,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 06:24:57,889 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 434 [2018-11-07 06:24:57,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:24:57,911 INFO L225 Difference]: With dead ends: 9477 [2018-11-07 06:24:57,911 INFO L226 Difference]: Without dead ends: 4648 [2018-11-07 06:24:57,928 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 441 GetRequests, 425 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 06:24:57,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4648 states. [2018-11-07 06:24:58,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4648 to 4645. [2018-11-07 06:24:58,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4645 states. [2018-11-07 06:24:58,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4645 states to 4645 states and 6372 transitions. [2018-11-07 06:24:58,050 INFO L78 Accepts]: Start accepts. Automaton has 4645 states and 6372 transitions. Word has length 434 [2018-11-07 06:24:58,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:24:58,051 INFO L480 AbstractCegarLoop]: Abstraction has 4645 states and 6372 transitions. [2018-11-07 06:24:58,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:24:58,051 INFO L276 IsEmpty]: Start isEmpty. Operand 4645 states and 6372 transitions. [2018-11-07 06:24:58,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2018-11-07 06:24:58,077 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:24:58,078 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:24:58,078 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:24:58,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:58,079 INFO L82 PathProgramCache]: Analyzing trace with hash -2023204654, now seen corresponding path program 1 times [2018-11-07 06:24:58,079 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:24:58,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:58,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:58,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:58,080 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:24:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:58,896 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-11-07 06:24:59,502 WARN L179 SmtUtils]: Spent 538.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2018-11-07 06:24:59,979 WARN L179 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 11 [2018-11-07 06:25:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 415 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-11-07 06:25:00,618 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:00,619 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:25:00,619 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 471 with the following transitions: [2018-11-07 06:25:00,619 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:25:00,623 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:25:00,623 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:25:09,413 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:25:09,414 INFO L272 AbstractInterpreter]: Visited 123 different actions 368 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 06:25:09,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:09,420 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:25:10,663 INFO L227 lantSequenceWeakener]: Weakened 467 states. On average, predicates are now at 80.17% of their original sizes. [2018-11-07 06:25:10,663 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:25:10,729 INFO L415 sIntCurrentIteration]: We unified 469 AI predicates to 469 [2018-11-07 06:25:10,729 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:25:10,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:25:10,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2018-11-07 06:25:10,729 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:25:10,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:25:10,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:25:10,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:25:10,730 INFO L87 Difference]: Start difference. First operand 4645 states and 6372 transitions. Second operand 9 states. [2018-11-07 06:25:26,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:26,792 INFO L93 Difference]: Finished difference Result 10161 states and 14346 transitions. [2018-11-07 06:25:26,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 06:25:26,792 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 470 [2018-11-07 06:25:26,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:26,815 INFO L225 Difference]: With dead ends: 10161 [2018-11-07 06:25:26,815 INFO L226 Difference]: Without dead ends: 5890 [2018-11-07 06:25:26,832 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 476 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-07 06:25:26,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5890 states. [2018-11-07 06:25:26,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5890 to 5677. [2018-11-07 06:25:26,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5677 states. [2018-11-07 06:25:26,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 7646 transitions. [2018-11-07 06:25:26,967 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 7646 transitions. Word has length 470 [2018-11-07 06:25:26,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:26,968 INFO L480 AbstractCegarLoop]: Abstraction has 5677 states and 7646 transitions. [2018-11-07 06:25:26,968 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 06:25:26,968 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 7646 transitions. [2018-11-07 06:25:26,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2018-11-07 06:25:26,995 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:26,996 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:25:26,996 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:26,996 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:26,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1157088157, now seen corresponding path program 1 times [2018-11-07 06:25:26,997 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:26,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:26,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:26,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:26,998 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:28,510 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 330 proven. 309 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2018-11-07 06:25:28,510 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:28,510 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:25:28,511 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 538 with the following transitions: [2018-11-07 06:25:28,511 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:25:28,515 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:25:28,516 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:25:34,432 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:25:34,433 INFO L272 AbstractInterpreter]: Visited 191 different actions 763 times. Merged at 9 different actions 35 times. Widened at 1 different actions 1 times. Found 7 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:25:34,440 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:34,441 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:25:34,442 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:34,442 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 06:25:34,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:34,451 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:25:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:34,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:25:35,458 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 608 proven. 2 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2018-11-07 06:25:35,459 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:25:35,926 WARN L179 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 21 [2018-11-07 06:25:36,763 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 328 proven. 104 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2018-11-07 06:25:36,784 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:25:36,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 6, 6] total 20 [2018-11-07 06:25:36,784 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:25:36,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:25:36,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:25:36,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2018-11-07 06:25:36,787 INFO L87 Difference]: Start difference. First operand 5677 states and 7646 transitions. Second operand 17 states. [2018-11-07 06:25:38,963 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2018-11-07 06:25:39,230 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2018-11-07 06:25:40,069 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2018-11-07 06:25:40,383 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2018-11-07 06:25:41,302 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2018-11-07 06:25:42,066 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2018-11-07 06:25:44,512 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2018-11-07 06:25:45,733 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 38 [2018-11-07 06:25:48,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:48,597 INFO L93 Difference]: Finished difference Result 14054 states and 20423 transitions. [2018-11-07 06:25:48,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-07 06:25:48,597 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 537 [2018-11-07 06:25:48,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:48,642 INFO L225 Difference]: With dead ends: 14054 [2018-11-07 06:25:48,642 INFO L226 Difference]: Without dead ends: 8751 [2018-11-07 06:25:48,701 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1172 GetRequests, 1107 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1202 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=916, Invalid=3506, Unknown=0, NotChecked=0, Total=4422 [2018-11-07 06:25:48,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8751 states. [2018-11-07 06:25:48,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8751 to 8105. [2018-11-07 06:25:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8105 states. [2018-11-07 06:25:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8105 states to 8105 states and 10832 transitions. [2018-11-07 06:25:49,008 INFO L78 Accepts]: Start accepts. Automaton has 8105 states and 10832 transitions. Word has length 537 [2018-11-07 06:25:49,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:49,008 INFO L480 AbstractCegarLoop]: Abstraction has 8105 states and 10832 transitions. [2018-11-07 06:25:49,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:25:49,009 INFO L276 IsEmpty]: Start isEmpty. Operand 8105 states and 10832 transitions. [2018-11-07 06:25:49,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2018-11-07 06:25:49,040 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:49,041 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:25:49,041 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:49,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:49,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1330600406, now seen corresponding path program 1 times [2018-11-07 06:25:49,042 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:49,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:49,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:49,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:49,043 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:49,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:50,403 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 06:25:50,847 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 06:25:51,687 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 439 proven. 445 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2018-11-07 06:25:51,687 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:51,688 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:25:51,688 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 544 with the following transitions: [2018-11-07 06:25:51,688 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [149], [151], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [506], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [634], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:25:51,691 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:25:51,691 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-11-07 06:25:59,884 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 06:25:59,885 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 06:25:59,885 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 06:25:59,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:59,885 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:25:59,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:59,895 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:26:00,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:00,035 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:26:00,043 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 06:26:00,244 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:26:00,245 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 06:26:00,250 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 06:26:00,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:26:00 BoogieIcfgContainer [2018-11-07 06:26:00,251 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 06:26:00,251 INFO L168 Benchmark]: Toolchain (without parser) took 233261.38 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 585.3 MB. Max. memory is 7.1 GB. [2018-11-07 06:26:00,252 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-07 06:26:00,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 801.65 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 06:26:00,254 INFO L168 Benchmark]: Boogie Procedure Inliner took 184.39 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -825.4 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2018-11-07 06:26:00,257 INFO L168 Benchmark]: Boogie Preprocessor took 106.89 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 06:26:00,257 INFO L168 Benchmark]: RCFGBuilder took 4153.13 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 134.5 MB). Peak memory consumption was 134.5 MB. Max. memory is 7.1 GB. [2018-11-07 06:26:00,258 INFO L168 Benchmark]: TraceAbstraction took 228010.09 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 496.1 MB. Max. memory is 7.1 GB. [2018-11-07 06:26:00,265 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 801.65 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 184.39 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 727.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -825.4 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.89 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4153.13 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 134.5 MB). Peak memory consumption was 134.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228010.09 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 496.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 76). Cancelled while BasicCegarLoop was analyzing trace of length 544 with TraceHistMax 6,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 227.9s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 163.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1500 SDtfs, 11866 SDslu, 2156 SDs, 0 SdLazy, 15669 SolverSat, 3168 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 130.9s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 2718 GetRequests, 2575 SyntacticMatches, 4 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1319 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8105occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 36.0s AbstIntTime, 6 AbstIntIterations, 4 AbstIntStrong, 0.9971722170679549 AbsIntWeakeningRatio, 0.09035738368172623 AbsIntAvgWeakeningVarsNumRemoved, 16.064059339177344 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 1010 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 10.1s InterpolantComputationTime, 3004 NumberOfCodeBlocks, 3004 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 3529 ConstructedInterpolants, 0 QuantifiedInterpolants, 11424659 SizeOfPredicates, 7 NumberOfNonLiveVariables, 797 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 3360/4203 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown