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/Problem11_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:33:42,082 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:33:42,084 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:33:42,101 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:33:42,101 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:33:42,102 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:33:42,104 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:33:42,107 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:33:42,109 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:33:42,110 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:33:42,111 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:33:42,112 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:33:42,113 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:33:42,120 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:33:42,121 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:33:42,122 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:33:42,123 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:33:42,124 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:33:42,126 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:33:42,128 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:33:42,129 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:33:42,130 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:33:42,132 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:33:42,132 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:33:42,133 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:33:42,133 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:33:42,134 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:33:42,135 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:33:42,136 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:33:42,137 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:33:42,137 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:33:42,138 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:33:42,138 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:33:42,138 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:33:42,139 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:33:42,140 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:33:42,140 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:33:42,155 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:33:42,155 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:33:42,156 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:33:42,156 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:33:42,156 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:33:42,157 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:33:42,157 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:33:42,157 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:33:42,157 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:33:42,157 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:33:42,158 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:33:42,158 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:33:42,158 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:33:42,158 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:33:42,159 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:33:42,159 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:33:42,159 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:33:42,160 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:33:42,160 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:33:42,160 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:33:42,160 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:33:42,160 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:33:42,161 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:33:42,161 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:33:42,161 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:33:42,161 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:33:42,161 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:33:42,162 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:33:42,162 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:33:42,162 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:33:42,162 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:33:42,162 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:33:42,163 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:33:42,163 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:33:42,163 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:33:42,163 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:33:42,206 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:33:42,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:33:42,222 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:33:42,224 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:33:42,224 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:33:42,225 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label47_true-unreach-call.c [2018-11-07 08:33:42,283 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc3566eb7/83a3237100464c2b94cf6d55b74b77af/FLAG39e59cb74 [2018-11-07 08:33:42,882 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:33:42,884 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label47_true-unreach-call.c [2018-11-07 08:33:42,914 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc3566eb7/83a3237100464c2b94cf6d55b74b77af/FLAG39e59cb74 [2018-11-07 08:33:42,932 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc3566eb7/83a3237100464c2b94cf6d55b74b77af [2018-11-07 08:33:42,943 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:33:42,945 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:33:42,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:33:42,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:33:42,951 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:33:42,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:33:42" (1/1) ... [2018-11-07 08:33:42,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ddd7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:42, skipping insertion in model container [2018-11-07 08:33:42,955 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:33:42" (1/1) ... [2018-11-07 08:33:42,965 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:33:43,049 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:33:43,803 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:33:43,809 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:33:44,022 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:33:44,045 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:33:44,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:44 WrapperNode [2018-11-07 08:33:44,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:33:44,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:33:44,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:33:44,047 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:33:44,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:44" (1/1) ... [2018-11-07 08:33:44,192 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:44" (1/1) ... [2018-11-07 08:33:44,210 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:33:44,213 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:33:44,213 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:33:44,213 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:33:44,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:44" (1/1) ... [2018-11-07 08:33:44,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:44" (1/1) ... [2018-11-07 08:33:44,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:44" (1/1) ... [2018-11-07 08:33:44,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:44" (1/1) ... [2018-11-07 08:33:44,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:44" (1/1) ... [2018-11-07 08:33:44,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:44" (1/1) ... [2018-11-07 08:33:44,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:44" (1/1) ... [2018-11-07 08:33:44,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:33:44,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:33:44,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:33:44,368 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:33:44,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:44" (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 08:33:44,447 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:33:44,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:33:44,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:33:44,449 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:33:44,449 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:33:44,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:33:44,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:33:44,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:33:44,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:33:49,608 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:33:49,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:33:49 BoogieIcfgContainer [2018-11-07 08:33:49,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:33:49,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:33:49,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:33:49,613 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:33:49,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:33:42" (1/3) ... [2018-11-07 08:33:49,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519fc1df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:33:49, skipping insertion in model container [2018-11-07 08:33:49,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:33:44" (2/3) ... [2018-11-07 08:33:49,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@519fc1df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:33:49, skipping insertion in model container [2018-11-07 08:33:49,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:33:49" (3/3) ... [2018-11-07 08:33:49,617 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label47_true-unreach-call.c [2018-11-07 08:33:49,627 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:33:49,637 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:33:49,651 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:33:49,689 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:33:49,690 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:33:49,690 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:33:49,690 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:33:49,690 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:33:49,690 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:33:49,691 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:33:49,691 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:33:49,719 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 08:33:49,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-07 08:33:49,728 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:33:49,729 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] [2018-11-07 08:33:49,732 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:33:49,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:33:49,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1591725132, now seen corresponding path program 1 times [2018-11-07 08:33:49,741 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:33:49,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:49,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:33:49,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:49,798 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:33:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:33:50,251 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:33:50,360 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 08:33:50,362 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:33:50,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:33:50,363 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:33:50,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:33:50,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:33:50,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:33:50,389 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-07 08:33:52,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:33:52,859 INFO L93 Difference]: Finished difference Result 790 states and 1382 transitions. [2018-11-07 08:33:52,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:33:52,864 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2018-11-07 08:33:52,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:33:52,885 INFO L225 Difference]: With dead ends: 790 [2018-11-07 08:33:52,885 INFO L226 Difference]: Without dead ends: 495 [2018-11-07 08:33:52,895 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 08:33:52,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-11-07 08:33:53,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 488. [2018-11-07 08:33:53,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2018-11-07 08:33:53,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 849 transitions. [2018-11-07 08:33:53,015 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 849 transitions. Word has length 42 [2018-11-07 08:33:53,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:33:53,016 INFO L480 AbstractCegarLoop]: Abstraction has 488 states and 849 transitions. [2018-11-07 08:33:53,016 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:33:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 849 transitions. [2018-11-07 08:33:53,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-07 08:33:53,031 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:33:53,032 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:33:53,032 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:33:53,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:33:53,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1369215340, now seen corresponding path program 1 times [2018-11-07 08:33:53,033 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:33:53,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:53,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:33:53,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:53,035 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:33:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:33:53,425 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:33:53,425 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:33:53,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:33:53,426 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:33:53,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:33:53,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:33:53,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:33:53,429 INFO L87 Difference]: Start difference. First operand 488 states and 849 transitions. Second operand 5 states. [2018-11-07 08:33:59,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:33:59,332 INFO L93 Difference]: Finished difference Result 1731 states and 3162 transitions. [2018-11-07 08:33:59,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:33:59,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2018-11-07 08:33:59,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:33:59,347 INFO L225 Difference]: With dead ends: 1731 [2018-11-07 08:33:59,347 INFO L226 Difference]: Without dead ends: 1249 [2018-11-07 08:33:59,353 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 08:33:59,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2018-11-07 08:33:59,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1032. [2018-11-07 08:33:59,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2018-11-07 08:33:59,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1658 transitions. [2018-11-07 08:33:59,409 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1658 transitions. Word has length 118 [2018-11-07 08:33:59,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:33:59,410 INFO L480 AbstractCegarLoop]: Abstraction has 1032 states and 1658 transitions. [2018-11-07 08:33:59,410 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:33:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1658 transitions. [2018-11-07 08:33:59,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-07 08:33:59,414 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:33:59,415 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:33:59,415 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:33:59,415 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:33:59,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1411728153, now seen corresponding path program 1 times [2018-11-07 08:33:59,416 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:33:59,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:59,417 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:33:59,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:33:59,417 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:33:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:33:59,630 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:33:59,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:33:59,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:33:59,631 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:33:59,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:33:59,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:33:59,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:33:59,633 INFO L87 Difference]: Start difference. First operand 1032 states and 1658 transitions. Second operand 5 states. [2018-11-07 08:34:03,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:03,384 INFO L93 Difference]: Finished difference Result 3664 states and 6086 transitions. [2018-11-07 08:34:03,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:34:03,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2018-11-07 08:34:03,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:03,407 INFO L225 Difference]: With dead ends: 3664 [2018-11-07 08:34:03,407 INFO L226 Difference]: Without dead ends: 2638 [2018-11-07 08:34:03,414 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:34:03,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2018-11-07 08:34:03,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2605. [2018-11-07 08:34:03,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2605 states. [2018-11-07 08:34:03,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 3729 transitions. [2018-11-07 08:34:03,505 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 3729 transitions. Word has length 129 [2018-11-07 08:34:03,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:03,506 INFO L480 AbstractCegarLoop]: Abstraction has 2605 states and 3729 transitions. [2018-11-07 08:34:03,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:34:03,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 3729 transitions. [2018-11-07 08:34:03,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-07 08:34:03,514 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:03,518 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:34:03,519 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:03,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:03,519 INFO L82 PathProgramCache]: Analyzing trace with hash 713476527, now seen corresponding path program 1 times [2018-11-07 08:34:03,519 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:03,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:03,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:03,520 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:03,521 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:04,399 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:34:04,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:04,399 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:34:04,400 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 175 with the following transitions: [2018-11-07 08:34:04,403 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [237], [239], [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], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:34:04,462 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:34:04,462 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:34:05,662 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:34:05,664 INFO L272 AbstractInterpreter]: Visited 140 different actions 406 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-11-07 08:34:05,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:05,715 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:34:05,715 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:05,715 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 08:34:05,731 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:05,731 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:34:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:05,853 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:34:06,196 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:34:06,196 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:34:06,457 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:34:06,489 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:34:06,490 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-11-07 08:34:06,490 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:06,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:34:06,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:34:06,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:34:06,492 INFO L87 Difference]: Start difference. First operand 2605 states and 3729 transitions. Second operand 3 states. [2018-11-07 08:34:08,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:08,981 INFO L93 Difference]: Finished difference Result 6000 states and 8830 transitions. [2018-11-07 08:34:08,981 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:34:08,981 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2018-11-07 08:34:08,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:09,000 INFO L225 Difference]: With dead ends: 6000 [2018-11-07 08:34:09,000 INFO L226 Difference]: Without dead ends: 3401 [2018-11-07 08:34:09,012 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 348 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:34:09,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2018-11-07 08:34:09,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 3205. [2018-11-07 08:34:09,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3205 states. [2018-11-07 08:34:09,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3205 states to 3205 states and 4557 transitions. [2018-11-07 08:34:09,096 INFO L78 Accepts]: Start accepts. Automaton has 3205 states and 4557 transitions. Word has length 174 [2018-11-07 08:34:09,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:09,097 INFO L480 AbstractCegarLoop]: Abstraction has 3205 states and 4557 transitions. [2018-11-07 08:34:09,097 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:34:09,097 INFO L276 IsEmpty]: Start isEmpty. Operand 3205 states and 4557 transitions. [2018-11-07 08:34:09,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-11-07 08:34:09,101 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:09,102 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, 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] [2018-11-07 08:34:09,102 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:09,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:09,103 INFO L82 PathProgramCache]: Analyzing trace with hash -910630669, now seen corresponding path program 1 times [2018-11-07 08:34:09,103 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:09,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:09,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:09,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:09,104 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:09,363 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:34:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 70 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:34:09,509 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:09,509 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:34:09,510 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 200 with the following transitions: [2018-11-07 08:34:09,510 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [237], [239], [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], [550], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:34:09,515 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:34:09,516 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:34:09,775 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:34:09,775 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-11-07 08:34:09,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:09,821 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:34:10,343 INFO L227 lantSequenceWeakener]: Weakened 190 states. On average, predicates are now at 73.45% of their original sizes. [2018-11-07 08:34:10,343 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:34:10,591 INFO L415 sIntCurrentIteration]: We unified 198 AI predicates to 198 [2018-11-07 08:34:10,591 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:34:10,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:34:10,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 08:34:10,592 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:10,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:34:10,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:34:10,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:34:10,594 INFO L87 Difference]: Start difference. First operand 3205 states and 4557 transitions. Second operand 6 states. [2018-11-07 08:35:04,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:35:04,196 INFO L93 Difference]: Finished difference Result 6596 states and 9328 transitions. [2018-11-07 08:35:04,196 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:35:04,196 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 199 [2018-11-07 08:35:04,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:35:04,213 INFO L225 Difference]: With dead ends: 6596 [2018-11-07 08:35:04,214 INFO L226 Difference]: Without dead ends: 3397 [2018-11-07 08:35:04,222 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 199 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:35:04,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2018-11-07 08:35:04,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3395. [2018-11-07 08:35:04,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3395 states. [2018-11-07 08:35:04,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3395 states to 3395 states and 4756 transitions. [2018-11-07 08:35:04,303 INFO L78 Accepts]: Start accepts. Automaton has 3395 states and 4756 transitions. Word has length 199 [2018-11-07 08:35:04,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:35:04,304 INFO L480 AbstractCegarLoop]: Abstraction has 3395 states and 4756 transitions. [2018-11-07 08:35:04,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:35:04,304 INFO L276 IsEmpty]: Start isEmpty. Operand 3395 states and 4756 transitions. [2018-11-07 08:35:04,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-11-07 08:35:04,310 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:35:04,311 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, 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] [2018-11-07 08:35:04,311 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:35:04,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:04,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1239131169, now seen corresponding path program 1 times [2018-11-07 08:35:04,312 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:35:04,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:04,313 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:04,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:04,313 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:35:04,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:05,459 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-07 08:35:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 137 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:35:05,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:05,717 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:35:05,718 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 280 with the following transitions: [2018-11-07 08:35:05,718 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [237], [239], [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], [626], [630], [634], [638], [641], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:35:05,724 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:35:05,724 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:35:06,082 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:35:06,082 INFO L272 AbstractInterpreter]: Visited 141 different actions 418 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 08:35:06,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:06,088 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:35:06,088 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:06,088 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 08:35:06,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:06,098 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:35:06,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:06,194 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:35:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-11-07 08:35:06,526 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:35:07,387 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 75 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:35:07,419 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:35:07,419 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7, 8] total 26 [2018-11-07 08:35:07,420 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:35:07,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 08:35:07,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 08:35:07,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2018-11-07 08:35:07,422 INFO L87 Difference]: Start difference. First operand 3395 states and 4756 transitions. Second operand 21 states. [2018-11-07 08:35:10,881 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2018-11-07 08:35:11,247 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2018-11-07 08:35:11,519 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2018-11-07 08:35:16,621 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 42 [2018-11-07 08:35:17,085 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 47 [2018-11-07 08:35:17,763 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 44 [2018-11-07 08:35:19,904 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 45 [2018-11-07 08:35:20,361 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2018-11-07 08:35:21,536 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 35 [2018-11-07 08:35:22,445 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2018-11-07 08:35:32,645 WARN L179 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 35 [2018-11-07 08:35:33,132 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2018-11-07 08:35:35,421 WARN L179 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2018-11-07 08:35:35,773 WARN L179 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2018-11-07 08:35:36,984 WARN L179 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2018-11-07 08:35:38,396 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-07 08:35:39,924 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 44 [2018-11-07 08:35:41,142 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2018-11-07 08:35:51,226 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 43 [2018-11-07 08:35:55,511 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 37 [2018-11-07 08:36:14,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:36:14,782 INFO L93 Difference]: Finished difference Result 27063 states and 48500 transitions. [2018-11-07 08:36:14,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2018-11-07 08:36:14,782 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 279 [2018-11-07 08:36:14,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:36:14,988 INFO L225 Difference]: With dead ends: 27063 [2018-11-07 08:36:14,988 INFO L226 Difference]: Without dead ends: 22925 [2018-11-07 08:36:15,126 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 811 GetRequests, 590 SyntacticMatches, 3 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19499 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=6475, Invalid=41705, Unknown=0, NotChecked=0, Total=48180 [2018-11-07 08:36:15,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22925 states. [2018-11-07 08:36:15,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22925 to 19467. [2018-11-07 08:36:15,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19467 states. [2018-11-07 08:36:16,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19467 states to 19467 states and 27125 transitions. [2018-11-07 08:36:16,019 INFO L78 Accepts]: Start accepts. Automaton has 19467 states and 27125 transitions. Word has length 279 [2018-11-07 08:36:16,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:36:16,020 INFO L480 AbstractCegarLoop]: Abstraction has 19467 states and 27125 transitions. [2018-11-07 08:36:16,020 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 08:36:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 19467 states and 27125 transitions. [2018-11-07 08:36:16,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2018-11-07 08:36:16,080 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:36:16,080 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, 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, 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] [2018-11-07 08:36:16,081 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:36:16,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:36:16,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1201170939, now seen corresponding path program 1 times [2018-11-07 08:36:16,081 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:36:16,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:36:16,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:36:16,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:36:16,083 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:36:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:36:17,385 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 5 proven. 72 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-11-07 08:36:17,386 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:36:17,386 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:36:17,386 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 358 with the following transitions: [2018-11-07 08:36:17,387 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [237], [239], [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], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [959], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-11-07 08:36:17,393 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:36:17,393 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:36:26,168 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:36:26,168 INFO L272 AbstractInterpreter]: Visited 176 different actions 522 times. Merged at 7 different actions 18 times. Never widened. Found 3 fixpoints after 3 different actions. Largest state had 28 variables. [2018-11-07 08:36:26,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:36:26,181 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:36:26,181 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:36:26,181 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 08:36:26,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:36:26,193 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:36:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:36:26,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:36:31,717 WARN L179 SmtUtils]: Spent 1.93 s on a formula simplification. DAG size of input: 37 DAG size of output: 15 [2018-11-07 08:36:31,989 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 5 proven. 213 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:36:31,989 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:36:32,376 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 216 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:36:32,397 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:36:32,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 15 [2018-11-07 08:36:32,397 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:36:32,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 08:36:32,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 08:36:32,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=152, Unknown=2, NotChecked=0, Total=210 [2018-11-07 08:36:32,402 INFO L87 Difference]: Start difference. First operand 19467 states and 27125 transitions. Second operand 12 states. Received shutdown request... [2018-11-07 08:37:42,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 08:37:42,913 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 08:37:42,918 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 08:37:42,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:37:42 BoogieIcfgContainer [2018-11-07 08:37:42,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 08:37:42,920 INFO L168 Benchmark]: Toolchain (without parser) took 239976.11 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 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 934.1 MB. Max. memory is 7.1 GB. [2018-11-07 08:37:42,921 INFO L168 Benchmark]: CDTParser took 0.18 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 08:37:42,921 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1100.42 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-11-07 08:37:42,922 INFO L168 Benchmark]: Boogie Procedure Inliner took 163.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2018-11-07 08:37:42,923 INFO L168 Benchmark]: Boogie Preprocessor took 154.87 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 08:37:42,924 INFO L168 Benchmark]: RCFGBuilder took 5241.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 170.2 MB). Peak memory consumption was 170.2 MB. Max. memory is 7.1 GB. [2018-11-07 08:37:42,924 INFO L168 Benchmark]: TraceAbstraction took 233309.06 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 809.2 MB. Max. memory is 7.1 GB. [2018-11-07 08:37:42,929 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 1100.42 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 163.50 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.87 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5241.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 170.2 MB). Peak memory consumption was 170.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 233309.06 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 809.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 111]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 111). Cancelled while BasicCegarLoop was constructing difference of abstraction (19467states) and FLOYD_HOARE automaton (currently 21 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (4050 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 233.2s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 206.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1572 SDtfs, 19001 SDslu, 3027 SDs, 0 SdLazy, 40519 SolverSat, 12364 SolverUnsat, 101 SolverUnknown, 0 SolverNotchecked, 163.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 2129 GetRequests, 1848 SyntacticMatches, 11 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19646 ImplicationChecksByTransitivity, 30.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19467occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.7s AbstIntTime, 4 AbstIntIterations, 1 AbstIntStrong, 0.9976061901061902 AbsIntWeakeningRatio, 0.1414141414141414 AbsIntAvgWeakeningVarsNumRemoved, 18.166666666666668 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.3s AutomataMinimizationTime, 6 MinimizatonAttempts, 3913 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 2108 NumberOfCodeBlocks, 2108 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2905 ConstructedInterpolants, 2 QuantifiedInterpolants, 3819481 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1394 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 996/1497 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown