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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:50:43,977 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:50:43,980 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:50:43,997 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:50:43,997 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:50:43,999 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:50:44,001 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:50:44,004 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:50:44,007 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:50:44,007 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:50:44,009 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:50:44,010 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:50:44,016 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:50:44,017 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:50:44,021 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:50:44,022 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:50:44,023 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:50:44,024 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:50:44,026 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:50:44,028 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:50:44,029 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:50:44,030 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:50:44,032 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:50:44,033 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:50:44,033 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:50:44,034 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:50:44,035 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:50:44,036 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:50:44,037 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:50:44,038 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:50:44,038 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:50:44,038 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:50:44,039 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:50:44,039 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:50:44,040 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:50:44,040 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:50:44,041 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:50:44,058 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:50:44,059 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:50:44,059 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:50:44,061 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:50:44,061 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:50:44,062 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:50:44,062 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:50:44,062 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:50:44,062 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:50:44,063 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:50:44,063 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:50:44,063 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:50:44,064 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:50:44,064 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:50:44,065 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:50:44,065 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:50:44,065 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:50:44,065 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:50:44,065 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:50:44,066 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:50:44,067 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:50:44,068 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:50:44,068 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:50:44,068 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:50:44,068 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:50:44,068 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:50:44,069 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:50:44,069 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:50:44,069 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:50:44,069 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:50:44,069 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:50:44,070 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:50:44,070 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:50:44,070 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:50:44,142 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:50:44,169 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:50:44,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:50:44,176 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:50:44,176 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:50:44,178 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-11-07 14:50:44,256 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3e3f48ba/8a4fcc12da59416d9febc5d71ccae7b9/FLAG3b1f2c684 [2018-11-07 14:50:45,135 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:50:45,136 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label26_true-unreach-call.c [2018-11-07 14:50:45,169 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3e3f48ba/8a4fcc12da59416d9febc5d71ccae7b9/FLAG3b1f2c684 [2018-11-07 14:50:45,187 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e3e3f48ba/8a4fcc12da59416d9febc5d71ccae7b9 [2018-11-07 14:50:45,201 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:50:45,203 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:50:45,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:50:45,205 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:50:45,209 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:50:45,210 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:50:45" (1/1) ... [2018-11-07 14:50:45,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@118388a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:50:45, skipping insertion in model container [2018-11-07 14:50:45,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:50:45" (1/1) ... [2018-11-07 14:50:45,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:50:45,401 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:50:46,865 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:50:46,871 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:50:47,822 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:50:47,860 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:50:47,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:50:47 WrapperNode [2018-11-07 14:50:47,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:50:47,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:50:47,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:50:47,862 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:50:47,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:50:47" (1/1) ... [2018-11-07 14:50:48,250 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:50:47" (1/1) ... [2018-11-07 14:50:48,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:50:48,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:50:48,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:50:48,261 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:50:48,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:50:47" (1/1) ... [2018-11-07 14:50:48,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:50:47" (1/1) ... [2018-11-07 14:50:48,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:50:47" (1/1) ... [2018-11-07 14:50:48,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:50:47" (1/1) ... [2018-11-07 14:50:48,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:50:47" (1/1) ... [2018-11-07 14:50:48,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:50:47" (1/1) ... [2018-11-07 14:50:48,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:50:47" (1/1) ... [2018-11-07 14:50:48,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:50:48,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:50:48,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:50:48,572 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:50:48,573 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:50:47" (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 14:50:48,647 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:50:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:50:48,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:50:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 14:50:48,648 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 14:50:48,648 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 14:50:48,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 14:50:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 14:50:48,649 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 14:50:48,649 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:50:48,650 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:50:48,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:50:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:50:48,651 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:50:48,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:50:59,279 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:50:59,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:50:59 BoogieIcfgContainer [2018-11-07 14:50:59,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:50:59,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:50:59,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:50:59,285 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:50:59,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:50:45" (1/3) ... [2018-11-07 14:50:59,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74acae4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:50:59, skipping insertion in model container [2018-11-07 14:50:59,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:50:47" (2/3) ... [2018-11-07 14:50:59,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74acae4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:50:59, skipping insertion in model container [2018-11-07 14:50:59,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:50:59" (3/3) ... [2018-11-07 14:50:59,290 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label26_true-unreach-call.c [2018-11-07 14:50:59,300 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:50:59,313 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:50:59,330 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:50:59,379 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:50:59,379 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:50:59,379 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:50:59,379 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:50:59,380 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:50:59,380 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:50:59,380 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:50:59,380 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:50:59,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 14:50:59,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-07 14:50:59,450 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:50:59,451 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:50:59,453 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:50:59,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:50:59,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1543659883, now seen corresponding path program 1 times [2018-11-07 14:50:59,463 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:50:59,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:50:59,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:50:59,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:50:59,518 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:50:59,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:50:59,961 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 14:50:59,963 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:50:59,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:50:59,964 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:50:59,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:50:59,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:50:59,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:50:59,991 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 14:51:12,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:51:12,592 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-11-07 14:51:12,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:51:12,604 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2018-11-07 14:51:12,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:51:12,660 INFO L225 Difference]: With dead ends: 3968 [2018-11-07 14:51:12,661 INFO L226 Difference]: Without dead ends: 2842 [2018-11-07 14:51:12,680 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 14:51:12,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-11-07 14:51:12,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-11-07 14:51:12,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-11-07 14:51:12,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-11-07 14:51:12,891 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 45 [2018-11-07 14:51:12,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:51:12,894 INFO L480 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-11-07 14:51:12,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:51:12,894 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-11-07 14:51:12,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-07 14:51:12,903 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:51:12,904 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:51:12,904 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:51:12,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:51:12,906 INFO L82 PathProgramCache]: Analyzing trace with hash 369865390, now seen corresponding path program 1 times [2018-11-07 14:51:12,907 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:51:12,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:51:12,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:51:12,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:51:12,909 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:51:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:51:13,226 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:51:13,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:51:13,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:51:13,226 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:51:13,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:51:13,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:51:13,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:51:13,230 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-11-07 14:51:25,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:51:25,726 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-11-07 14:51:25,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:51:25,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2018-11-07 14:51:25,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:51:25,753 INFO L225 Difference]: With dead ends: 5673 [2018-11-07 14:51:25,753 INFO L226 Difference]: Without dead ends: 3698 [2018-11-07 14:51:25,761 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 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 14:51:25,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-11-07 14:51:25,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-11-07 14:51:25,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-11-07 14:51:25,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-11-07 14:51:25,870 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 115 [2018-11-07 14:51:25,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:51:25,870 INFO L480 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-11-07 14:51:25,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:51:25,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-11-07 14:51:25,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-11-07 14:51:25,874 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:51:25,875 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:51:25,875 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:51:25,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:51:25,875 INFO L82 PathProgramCache]: Analyzing trace with hash 241566930, now seen corresponding path program 1 times [2018-11-07 14:51:25,876 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:51:25,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:51:25,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:51:25,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:51:25,877 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:51:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:51:26,095 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:51:26,095 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:51:26,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:51:26,095 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:51:26,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:51:26,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:51:26,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:51:26,097 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-11-07 14:51:34,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:51:34,910 INFO L93 Difference]: Finished difference Result 10955 states and 17866 transitions. [2018-11-07 14:51:34,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:51:34,912 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2018-11-07 14:51:34,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:51:34,957 INFO L225 Difference]: With dead ends: 10955 [2018-11-07 14:51:34,957 INFO L226 Difference]: Without dead ends: 7274 [2018-11-07 14:51:34,974 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 14:51:34,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2018-11-07 14:51:35,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7167. [2018-11-07 14:51:35,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7167 states. [2018-11-07 14:51:35,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 10519 transitions. [2018-11-07 14:51:35,179 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 10519 transitions. Word has length 117 [2018-11-07 14:51:35,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:51:35,179 INFO L480 AbstractCegarLoop]: Abstraction has 7167 states and 10519 transitions. [2018-11-07 14:51:35,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:51:35,180 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 10519 transitions. [2018-11-07 14:51:35,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-07 14:51:35,183 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:51:35,183 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:51:35,184 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:51:35,184 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:51:35,184 INFO L82 PathProgramCache]: Analyzing trace with hash 572519882, now seen corresponding path program 1 times [2018-11-07 14:51:35,184 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:51:35,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:51:35,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:51:35,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:51:35,186 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:51:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:51:35,441 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:51:35,442 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:51:35,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:51:35,442 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:51:35,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:51:35,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:51:35,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:51:35,445 INFO L87 Difference]: Start difference. First operand 7167 states and 10519 transitions. Second operand 4 states. [2018-11-07 14:51:44,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:51:44,598 INFO L93 Difference]: Finished difference Result 27645 states and 43286 transitions. [2018-11-07 14:51:44,605 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:51:44,605 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2018-11-07 14:51:44,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:51:44,714 INFO L225 Difference]: With dead ends: 27645 [2018-11-07 14:51:44,714 INFO L226 Difference]: Without dead ends: 20484 [2018-11-07 14:51:44,772 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 14:51:44,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20484 states. [2018-11-07 14:51:45,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20484 to 20445. [2018-11-07 14:51:45,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20445 states. [2018-11-07 14:51:45,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20445 states to 20445 states and 29105 transitions. [2018-11-07 14:51:45,345 INFO L78 Accepts]: Start accepts. Automaton has 20445 states and 29105 transitions. Word has length 161 [2018-11-07 14:51:45,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:51:45,346 INFO L480 AbstractCegarLoop]: Abstraction has 20445 states and 29105 transitions. [2018-11-07 14:51:45,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:51:45,346 INFO L276 IsEmpty]: Start isEmpty. Operand 20445 states and 29105 transitions. [2018-11-07 14:51:45,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-11-07 14:51:45,350 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:51:45,351 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:51:45,354 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:51:45,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:51:45,355 INFO L82 PathProgramCache]: Analyzing trace with hash 499433324, now seen corresponding path program 1 times [2018-11-07 14:51:45,355 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:51:45,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:51:45,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:51:45,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:51:45,357 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:51:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:51:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:51:45,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:51:45,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:51:45,648 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:51:45,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:51:45,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:51:45,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:51:45,650 INFO L87 Difference]: Start difference. First operand 20445 states and 29105 transitions. Second operand 4 states. [2018-11-07 14:51:54,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:51:54,758 INFO L93 Difference]: Finished difference Result 46538 states and 66017 transitions. [2018-11-07 14:51:54,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:51:54,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2018-11-07 14:51:54,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:51:54,870 INFO L225 Difference]: With dead ends: 46538 [2018-11-07 14:51:54,870 INFO L226 Difference]: Without dead ends: 26099 [2018-11-07 14:51:54,955 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 14:51:54,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26099 states. [2018-11-07 14:51:55,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26099 to 26098. [2018-11-07 14:51:55,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26098 states. [2018-11-07 14:51:55,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26098 states to 26098 states and 32701 transitions. [2018-11-07 14:51:55,518 INFO L78 Accepts]: Start accepts. Automaton has 26098 states and 32701 transitions. Word has length 166 [2018-11-07 14:51:55,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:51:55,519 INFO L480 AbstractCegarLoop]: Abstraction has 26098 states and 32701 transitions. [2018-11-07 14:51:55,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:51:55,519 INFO L276 IsEmpty]: Start isEmpty. Operand 26098 states and 32701 transitions. [2018-11-07 14:51:55,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-11-07 14:51:55,536 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:51:55,536 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:51:55,537 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:51:55,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:51:55,537 INFO L82 PathProgramCache]: Analyzing trace with hash 2012871233, now seen corresponding path program 1 times [2018-11-07 14:51:55,537 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:51:55,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:51:55,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:51:55,539 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:51:55,539 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:51:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:51:56,386 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:51:56,386 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:51:56,388 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:51:56,389 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 332 with the following transitions: [2018-11-07 14:51:56,393 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2887], [2889], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3363], [3365], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3451], [3455], [3459], [3463], [3467], [3471], [3475], [3479], [3483], [3487], [3498], [3502], [3506], [3517], [3521], [3525], [3529], [3533], [3537], [3541], [3545], [3556], [3560], [3564], [3568], [3572], [3576], [3580], [3591], [3595], [3598], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 14:51:56,473 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:51:56,474 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:51:57,958 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:51:57,960 INFO L272 AbstractInterpreter]: Visited 170 different actions 170 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 14:51:57,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:51:57,999 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:51:59,192 INFO L227 lantSequenceWeakener]: Weakened 307 states. On average, predicates are now at 71.27% of their original sizes. [2018-11-07 14:51:59,194 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:51:59,952 INFO L415 sIntCurrentIteration]: We unified 330 AI predicates to 330 [2018-11-07 14:51:59,952 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:51:59,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:51:59,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-07 14:51:59,954 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:51:59,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 14:51:59,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 14:51:59,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 14:51:59,955 INFO L87 Difference]: Start difference. First operand 26098 states and 32701 transitions. Second operand 11 states. [2018-11-07 14:52:10,224 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 14:54:36,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 14:54:36,187 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 14:54:36,194 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 14:54:36,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:54:36 BoogieIcfgContainer [2018-11-07 14:54:36,195 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 14:54:36,196 INFO L168 Benchmark]: Toolchain (without parser) took 230993.41 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 331.7 MB. Max. memory is 7.1 GB. [2018-11-07 14:54:36,198 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 14:54:36,198 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2656.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-07 14:54:36,199 INFO L168 Benchmark]: Boogie Procedure Inliner took 399.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 798.5 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-07 14:54:36,202 INFO L168 Benchmark]: Boogie Preprocessor took 309.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2018-11-07 14:54:36,203 INFO L168 Benchmark]: RCFGBuilder took 10709.57 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 163.6 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 40.2 MB). Peak memory consumption was 664.0 MB. Max. memory is 7.1 GB. [2018-11-07 14:54:36,204 INFO L168 Benchmark]: TraceAbstraction took 216913.06 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 136.4 MB. Max. memory is 7.1 GB. [2018-11-07 14:54:36,210 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2656.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 399.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 798.5 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 309.83 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10709.57 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 163.6 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 40.2 MB). Peak memory consumption was 664.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216913.06 ms. Allocated memory was 2.5 GB in the beginning and 4.0 GB in the end (delta: 1.5 GB). Free memory was 2.2 GB in the beginning and 3.6 GB in the end (delta: -1.4 GB). Peak memory consumption was 136.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 126]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 126). Cancelled while BasicCegarLoop was constructing difference of abstraction (26098states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (3352 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 216.8s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 208.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3903 SDtfs, 15094 SDslu, 2219 SDs, 0 SdLazy, 23559 SolverSat, 6407 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 185.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 368 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26098occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9985666946141254 AbsIntWeakeningRatio, 0.09090909090909091 AbsIntAvgWeakeningVarsNumRemoved, 0.05757575757575758 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 5 MinimizatonAttempts, 1019 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 935 NumberOfCodeBlocks, 935 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 929 ConstructedInterpolants, 0 QuantifiedInterpolants, 627665 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 345/347 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown