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_label52_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:34:10,172 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:34:10,175 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:34:10,189 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:34:10,189 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:34:10,190 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:34:10,192 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:34:10,194 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:34:10,196 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:34:10,196 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:34:10,197 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:34:10,198 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:34:10,199 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:34:10,200 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:34:10,201 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:34:10,201 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:34:10,202 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:34:10,204 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:34:10,206 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:34:10,208 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:34:10,209 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:34:10,210 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:34:10,213 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:34:10,213 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:34:10,213 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:34:10,214 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:34:10,215 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:34:10,216 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:34:10,217 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:34:10,218 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:34:10,218 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:34:10,219 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:34:10,219 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:34:10,220 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:34:10,221 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:34:10,221 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:34:10,222 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 08:34:10,242 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:34:10,242 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:34:10,243 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:34:10,244 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:34:10,244 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:34:10,244 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:34:10,244 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:34:10,244 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:34:10,245 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:34:10,245 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:34:10,245 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:34:10,245 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:34:10,245 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:34:10,245 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:34:10,246 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:34:10,246 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:34:10,247 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:34:10,250 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:34:10,250 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:34:10,250 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:34:10,250 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:34:10,251 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:34:10,251 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:34:10,251 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:34:10,251 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:34:10,251 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:34:10,252 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:34:10,252 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:34:10,252 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:34:10,252 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:34:10,252 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:34:10,254 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:34:10,254 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:34:10,254 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:34:10,254 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:34:10,254 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:34:10,306 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:34:10,322 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:34:10,327 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:34:10,328 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:34:10,329 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:34:10,331 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label52_true-unreach-call.c [2018-11-07 08:34:10,396 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41c96ea76/7aa0d253977643dfb679a7681f9fbe14/FLAG544c80659 [2018-11-07 08:34:11,019 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:34:11,023 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label52_true-unreach-call.c [2018-11-07 08:34:11,040 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41c96ea76/7aa0d253977643dfb679a7681f9fbe14/FLAG544c80659 [2018-11-07 08:34:11,056 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41c96ea76/7aa0d253977643dfb679a7681f9fbe14 [2018-11-07 08:34:11,066 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:34:11,068 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:34:11,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:34:11,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:34:11,073 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:34:11,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:34:11" (1/1) ... [2018-11-07 08:34:11,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68185dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:11, skipping insertion in model container [2018-11-07 08:34:11,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:34:11" (1/1) ... [2018-11-07 08:34:11,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:34:11,172 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:34:11,773 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:34:11,778 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:34:11,934 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:34:11,955 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:34:11,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:11 WrapperNode [2018-11-07 08:34:11,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:34:11,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:34:11,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:34:11,957 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:34:11,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:11" (1/1) ... [2018-11-07 08:34:12,106 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:11" (1/1) ... [2018-11-07 08:34:12,124 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:34:12,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:34:12,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:34:12,125 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:34:12,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:11" (1/1) ... [2018-11-07 08:34:12,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:11" (1/1) ... [2018-11-07 08:34:12,144 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:11" (1/1) ... [2018-11-07 08:34:12,144 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:11" (1/1) ... [2018-11-07 08:34:12,224 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:11" (1/1) ... [2018-11-07 08:34:12,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:11" (1/1) ... [2018-11-07 08:34:12,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:11" (1/1) ... [2018-11-07 08:34:12,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:34:12,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:34:12,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:34:12,282 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:34:12,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:11" (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 08:34:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:34:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:34:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:34:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:34:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:34:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:34:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:34:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:34:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:34:16,877 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:34:16,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:34:16 BoogieIcfgContainer [2018-11-07 08:34:16,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:34:16,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:34:16,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:34:16,884 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:34:16,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:34:11" (1/3) ... [2018-11-07 08:34:16,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28770d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:34:16, skipping insertion in model container [2018-11-07 08:34:16,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:34:11" (2/3) ... [2018-11-07 08:34:16,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28770d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:34:16, skipping insertion in model container [2018-11-07 08:34:16,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:34:16" (3/3) ... [2018-11-07 08:34:16,888 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label52_true-unreach-call.c [2018-11-07 08:34:16,897 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:34:16,905 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:34:16,922 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:34:16,962 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:34:16,962 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:34:16,962 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:34:16,962 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:34:16,963 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:34:16,963 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:34:16,963 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:34:16,963 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:34:16,992 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-11-07 08:34:17,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-07 08:34:17,005 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:17,010 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:34:17,013 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:17,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:17,020 INFO L82 PathProgramCache]: Analyzing trace with hash -684847423, now seen corresponding path program 1 times [2018-11-07 08:34:17,023 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:17,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:17,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:17,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:17,072 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:17,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:17,572 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:34:17,610 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 08:34:17,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:34:17,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:34:17,613 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:17,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:34:17,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:34:17,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:34:17,638 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 3 states. [2018-11-07 08:34:19,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:19,622 INFO L93 Difference]: Finished difference Result 790 states and 1382 transitions. [2018-11-07 08:34:19,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:34:19,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2018-11-07 08:34:19,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:19,644 INFO L225 Difference]: With dead ends: 790 [2018-11-07 08:34:19,644 INFO L226 Difference]: Without dead ends: 495 [2018-11-07 08:34:19,652 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 08:34:19,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2018-11-07 08:34:19,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 488. [2018-11-07 08:34:19,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 488 states. [2018-11-07 08:34:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 488 states to 488 states and 849 transitions. [2018-11-07 08:34:19,746 INFO L78 Accepts]: Start accepts. Automaton has 488 states and 849 transitions. Word has length 59 [2018-11-07 08:34:19,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:19,747 INFO L480 AbstractCegarLoop]: Abstraction has 488 states and 849 transitions. [2018-11-07 08:34:19,747 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:34:19,747 INFO L276 IsEmpty]: Start isEmpty. Operand 488 states and 849 transitions. [2018-11-07 08:34:19,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-07 08:34:19,761 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:19,761 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, 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] [2018-11-07 08:34:19,762 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:19,762 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:19,763 INFO L82 PathProgramCache]: Analyzing trace with hash 788418208, now seen corresponding path program 1 times [2018-11-07 08:34:19,763 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:19,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:19,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:19,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:19,765 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:20,216 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:34:20,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:34:20,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:34:20,218 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:20,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:34:20,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:34:20,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:34:20,221 INFO L87 Difference]: Start difference. First operand 488 states and 849 transitions. Second operand 5 states. [2018-11-07 08:34:25,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:25,340 INFO L93 Difference]: Finished difference Result 1731 states and 3162 transitions. [2018-11-07 08:34:25,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:34:25,341 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-11-07 08:34:25,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:25,351 INFO L225 Difference]: With dead ends: 1731 [2018-11-07 08:34:25,352 INFO L226 Difference]: Without dead ends: 1249 [2018-11-07 08:34:25,357 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 08:34:25,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2018-11-07 08:34:25,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1032. [2018-11-07 08:34:25,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2018-11-07 08:34:25,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1658 transitions. [2018-11-07 08:34:25,448 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1658 transitions. Word has length 135 [2018-11-07 08:34:25,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:25,449 INFO L480 AbstractCegarLoop]: Abstraction has 1032 states and 1658 transitions. [2018-11-07 08:34:25,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:34:25,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1658 transitions. [2018-11-07 08:34:25,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 08:34:25,462 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:25,462 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, 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] [2018-11-07 08:34:25,463 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:25,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:25,463 INFO L82 PathProgramCache]: Analyzing trace with hash 167245263, now seen corresponding path program 1 times [2018-11-07 08:34:25,463 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:25,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:25,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:25,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:25,465 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:25,688 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:34:25,688 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:34:25,689 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 08:34:25,689 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:25,689 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 08:34:25,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 08:34:25,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 08:34:25,690 INFO L87 Difference]: Start difference. First operand 1032 states and 1658 transitions. Second operand 5 states. [2018-11-07 08:34:29,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:29,548 INFO L93 Difference]: Finished difference Result 3664 states and 6086 transitions. [2018-11-07 08:34:29,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 08:34:29,556 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-11-07 08:34:29,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:29,575 INFO L225 Difference]: With dead ends: 3664 [2018-11-07 08:34:29,575 INFO L226 Difference]: Without dead ends: 2638 [2018-11-07 08:34:29,582 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 08:34:29,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2018-11-07 08:34:29,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2605. [2018-11-07 08:34:29,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2605 states. [2018-11-07 08:34:29,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2605 states to 2605 states and 3729 transitions. [2018-11-07 08:34:29,665 INFO L78 Accepts]: Start accepts. Automaton has 2605 states and 3729 transitions. Word has length 146 [2018-11-07 08:34:29,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:29,665 INFO L480 AbstractCegarLoop]: Abstraction has 2605 states and 3729 transitions. [2018-11-07 08:34:29,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 08:34:29,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2605 states and 3729 transitions. [2018-11-07 08:34:29,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-11-07 08:34:29,671 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:29,671 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, 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] [2018-11-07 08:34:29,672 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:29,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:29,672 INFO L82 PathProgramCache]: Analyzing trace with hash 2059396069, now seen corresponding path program 1 times [2018-11-07 08:34:29,672 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:29,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:29,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:29,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:29,674 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:29,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:30,059 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:34:30,059 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:30,060 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:34:30,060 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 192 with the following transitions: [2018-11-07 08:34:30,063 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], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [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 08:34:30,113 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:34:30,113 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:34:31,438 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:34:31,440 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 08:34:31,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:31,488 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:34:31,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:31,488 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 08:34:31,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:31,504 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:34:31,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:31,624 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:34:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:34:31,875 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:34:32,148 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:34:32,184 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:34:32,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [8] total 9 [2018-11-07 08:34:32,184 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:32,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:34:32,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:34:32,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:34:32,186 INFO L87 Difference]: Start difference. First operand 2605 states and 3729 transitions. Second operand 3 states. [2018-11-07 08:34:35,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:34:35,143 INFO L93 Difference]: Finished difference Result 6000 states and 8830 transitions. [2018-11-07 08:34:35,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:34:35,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2018-11-07 08:34:35,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:34:35,163 INFO L225 Difference]: With dead ends: 6000 [2018-11-07 08:34:35,163 INFO L226 Difference]: Without dead ends: 3401 [2018-11-07 08:34:35,174 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 382 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:34:35,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2018-11-07 08:34:35,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 3205. [2018-11-07 08:34:35,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3205 states. [2018-11-07 08:34:35,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3205 states to 3205 states and 4557 transitions. [2018-11-07 08:34:35,249 INFO L78 Accepts]: Start accepts. Automaton has 3205 states and 4557 transitions. Word has length 191 [2018-11-07 08:34:35,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:34:35,249 INFO L480 AbstractCegarLoop]: Abstraction has 3205 states and 4557 transitions. [2018-11-07 08:34:35,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:34:35,250 INFO L276 IsEmpty]: Start isEmpty. Operand 3205 states and 4557 transitions. [2018-11-07 08:34:35,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-11-07 08:34:35,255 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:34:35,255 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 08:34:35,256 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:34:35,256 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:35,256 INFO L82 PathProgramCache]: Analyzing trace with hash -558733758, now seen corresponding path program 1 times [2018-11-07 08:34:35,256 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:34:35,257 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:35,257 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:34:35,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:34:35,258 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:34:35,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:34:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 104 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:34:35,509 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:34:35,509 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:34:35,509 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 217 with the following transitions: [2018-11-07 08:34:35,510 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], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [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 08:34:35,514 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:34:35,514 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:34:35,844 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:34:35,845 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 08:34:35,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:34:35,879 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:34:36,495 INFO L227 lantSequenceWeakener]: Weakened 207 states. On average, predicates are now at 73.74% of their original sizes. [2018-11-07 08:34:36,495 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:34:36,762 INFO L415 sIntCurrentIteration]: We unified 215 AI predicates to 215 [2018-11-07 08:34:36,762 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:34:36,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:34:36,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 08:34:36,764 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:34:36,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:34:36,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:34:36,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:34:36,765 INFO L87 Difference]: Start difference. First operand 3205 states and 4557 transitions. Second operand 6 states. [2018-11-07 08:35:02,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:35:02,154 INFO L93 Difference]: Finished difference Result 6596 states and 9328 transitions. [2018-11-07 08:35:02,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 08:35:02,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 216 [2018-11-07 08:35:02,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:35:02,169 INFO L225 Difference]: With dead ends: 6596 [2018-11-07 08:35:02,169 INFO L226 Difference]: Without dead ends: 3397 [2018-11-07 08:35:02,178 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 08:35:02,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3397 states. [2018-11-07 08:35:02,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3397 to 3395. [2018-11-07 08:35:02,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3395 states. [2018-11-07 08:35:02,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3395 states to 3395 states and 4756 transitions. [2018-11-07 08:35:02,246 INFO L78 Accepts]: Start accepts. Automaton has 3395 states and 4756 transitions. Word has length 216 [2018-11-07 08:35:02,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:35:02,246 INFO L480 AbstractCegarLoop]: Abstraction has 3395 states and 4756 transitions. [2018-11-07 08:35:02,246 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:35:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 3395 states and 4756 transitions. [2018-11-07 08:35:02,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-11-07 08:35:02,253 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:35:02,253 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:35:02,254 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:35:02,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:02,254 INFO L82 PathProgramCache]: Analyzing trace with hash -2137655114, now seen corresponding path program 1 times [2018-11-07 08:35:02,255 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:35:02,255 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:02,255 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:02,256 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:02,256 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:35:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:02,812 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 08:35:03,498 WARN L179 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-11-07 08:35:03,767 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-11-07 08:35:04,158 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 156 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:35:04,159 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:04,159 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:35:04,159 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 297 with the following transitions: [2018-11-07 08:35:04,160 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], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [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 08:35:04,165 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:35:04,165 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:35:04,468 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:35:04,468 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 08:35:04,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:04,486 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:35:04,486 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:04,486 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 08:35:04,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:04,495 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:35:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:04,592 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:35:04,986 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 109 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2018-11-07 08:35:04,986 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:35:05,537 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 109 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:35:05,572 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:35:05,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7, 8] total 26 [2018-11-07 08:35:05,573 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:35:05,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 08:35:05,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 08:35:05,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2018-11-07 08:35:05,576 INFO L87 Difference]: Start difference. First operand 3395 states and 4756 transitions. Second operand 21 states. [2018-11-07 08:35:09,753 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2018-11-07 08:35:12,589 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2018-11-07 08:35:16,458 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2018-11-07 08:35:23,268 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2018-11-07 08:35:26,720 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2018-11-07 08:35:28,588 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 38 [2018-11-07 08:35:30,522 WARN L179 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 29 [2018-11-07 08:35:30,969 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2018-11-07 08:35:31,415 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 30 [2018-11-07 08:35:36,690 WARN L179 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2018-11-07 08:35:41,897 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2018-11-07 08:35:43,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:35:43,851 INFO L93 Difference]: Finished difference Result 18795 states and 31922 transitions. [2018-11-07 08:35:43,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 140 states. [2018-11-07 08:35:43,851 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 296 [2018-11-07 08:35:43,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:35:43,965 INFO L225 Difference]: With dead ends: 18795 [2018-11-07 08:35:43,965 INFO L226 Difference]: Without dead ends: 15037 [2018-11-07 08:35:44,041 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 773 GetRequests, 608 SyntacticMatches, 4 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10234 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=3766, Invalid=22640, Unknown=0, NotChecked=0, Total=26406 [2018-11-07 08:35:44,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15037 states. [2018-11-07 08:35:44,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15037 to 11602. [2018-11-07 08:35:44,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11602 states. [2018-11-07 08:35:44,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11602 states to 11602 states and 15428 transitions. [2018-11-07 08:35:44,557 INFO L78 Accepts]: Start accepts. Automaton has 11602 states and 15428 transitions. Word has length 296 [2018-11-07 08:35:44,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:35:44,558 INFO L480 AbstractCegarLoop]: Abstraction has 11602 states and 15428 transitions. [2018-11-07 08:35:44,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 08:35:44,558 INFO L276 IsEmpty]: Start isEmpty. Operand 11602 states and 15428 transitions. [2018-11-07 08:35:44,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2018-11-07 08:35:44,598 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:35:44,598 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, 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, 1, 1, 1, 1, 1, 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 08:35:44,599 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:35:44,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:44,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1470194130, now seen corresponding path program 1 times [2018-11-07 08:35:44,600 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:35:44,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:44,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:44,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:35:44,601 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:35:44,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 5 proven. 106 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-11-07 08:35:45,902 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:45,902 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:35:45,903 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 375 with the following transitions: [2018-11-07 08:35:45,903 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], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [373], [375], [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 08:35:45,909 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:35:45,910 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:35:54,812 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 08:35:54,812 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 08:35:54,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:35:54,821 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 08:35:54,821 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:35:54,821 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 08:35:54,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:35:54,833 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 08:35:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:35:54,937 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 08:36:01,387 WARN L179 SmtUtils]: Spent 3.09 s on a formula simplification. DAG size of input: 37 DAG size of output: 15 [2018-11-07 08:36:01,609 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 5 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:36:01,609 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 08:36:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:36:01,971 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 08:36:01,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 15 [2018-11-07 08:36:01,972 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 08:36:01,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 08:36:01,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 08:36:01,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=152, Unknown=2, NotChecked=0, Total=210 [2018-11-07 08:36:01,973 INFO L87 Difference]: Start difference. First operand 11602 states and 15428 transitions. Second operand 12 states. [2018-11-07 08:36:02,742 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 19 Received shutdown request... [2018-11-07 08:38:13,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 08:38:13,941 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 08:38:13,946 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 08:38:13,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:38:13 BoogieIcfgContainer [2018-11-07 08:38:13,946 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 08:38:13,947 INFO L168 Benchmark]: Toolchain (without parser) took 242880.24 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -873.6 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-07 08:38:13,948 INFO L168 Benchmark]: CDTParser took 0.33 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 08:38:13,949 INFO L168 Benchmark]: CACSL2BoogieTranslator took 887.41 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: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2018-11-07 08:38:13,949 INFO L168 Benchmark]: Boogie Procedure Inliner took 167.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -861.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2018-11-07 08:38:13,950 INFO L168 Benchmark]: Boogie Preprocessor took 157.12 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 08:38:13,952 INFO L168 Benchmark]: RCFGBuilder took 4596.79 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: 183.2 MB). Peak memory consumption was 183.2 MB. Max. memory is 7.1 GB. [2018-11-07 08:38:13,953 INFO L168 Benchmark]: TraceAbstraction took 237067.03 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -261.1 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-07 08:38:13,959 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 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 887.41 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: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 167.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 752.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -861.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 157.12 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 4596.79 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: 183.2 MB). Peak memory consumption was 183.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237067.03 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 2.3 GB in the end (delta: -261.1 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 162]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 162). Cancelled while BasicCegarLoop was constructing difference of abstraction (11602states) and FLOYD_HOARE automaton (currently 25 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (3959 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 236.9s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 209.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1520 SDtfs, 26726 SDslu, 1971 SDs, 0 SdLazy, 22259 SolverSat, 12943 SolverUnsat, 194 SolverUnknown, 0 SolverNotchecked, 178.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 2179 GetRequests, 1951 SyntacticMatches, 12 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10433 ImplicationChecksByTransitivity, 24.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11602occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 11.0s AbstIntTime, 4 AbstIntIterations, 1 AbstIntStrong, 0.9977954680977937 AbsIntWeakeningRatio, 0.13023255813953488 AbsIntAvgWeakeningVarsNumRemoved, 18.311627906976746 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 3890 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.4s InterpolantComputationTime, 2278 NumberOfCodeBlocks, 2278 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 3126 ConstructedInterpolants, 2 QuantifiedInterpolants, 4330468 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1445 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 1236/1820 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown