java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label01_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:48:21,140 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:48:21,142 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:48:21,159 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:48:21,160 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:48:21,161 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:48:21,163 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:48:21,166 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:48:21,168 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:48:21,170 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:48:21,173 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:48:21,173 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:48:21,175 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:48:21,178 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:48:21,180 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:48:21,181 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:48:21,181 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:48:21,191 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:48:21,195 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:48:21,196 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:48:21,197 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:48:21,200 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:48:21,202 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:48:21,202 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:48:21,203 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:48:21,204 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:48:21,206 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:48:21,207 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:48:21,208 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:48:21,212 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:48:21,212 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:48:21,213 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:48:21,213 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:48:21,215 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:48:21,216 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:48:21,216 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:48:21,217 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:48:21,240 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:48:21,243 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:48:21,244 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:48:21,244 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:48:21,244 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:48:21,244 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:48:21,244 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:48:21,245 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:48:21,245 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:48:21,245 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:48:21,245 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:48:21,245 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:48:21,245 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:48:21,249 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:48:21,249 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:48:21,249 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:48:21,250 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:48:21,250 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:48:21,250 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:48:21,250 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:48:21,250 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:48:21,250 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:48:21,251 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:48:21,251 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:48:21,251 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:48:21,251 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:48:21,251 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:48:21,254 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:48:21,254 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:48:21,254 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:48:21,254 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:48:21,254 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:48:21,255 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:48:21,255 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:48:21,255 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:48:21,321 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:48:21,334 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:48:21,337 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:48:21,339 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:48:21,339 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:48:21,340 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label01_true-unreach-call.c [2018-11-07 18:48:21,403 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3037ffdab/1f044142d5064ea5931de4ad8e6a8fef/FLAG96ab544d8 [2018-11-07 18:48:22,018 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:48:22,021 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label01_true-unreach-call.c [2018-11-07 18:48:22,044 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3037ffdab/1f044142d5064ea5931de4ad8e6a8fef/FLAG96ab544d8 [2018-11-07 18:48:22,066 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3037ffdab/1f044142d5064ea5931de4ad8e6a8fef [2018-11-07 18:48:22,079 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:48:22,080 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:48:22,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:48:22,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:48:22,088 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:48:22,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:48:22" (1/1) ... [2018-11-07 18:48:22,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6bed07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:22, skipping insertion in model container [2018-11-07 18:48:22,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:48:22" (1/1) ... [2018-11-07 18:48:22,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:48:22,206 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:48:22,964 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:48:22,969 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:48:23,273 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:48:23,296 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:48:23,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:23 WrapperNode [2018-11-07 18:48:23,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:48:23,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:48:23,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:48:23,298 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:48:23,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:23" (1/1) ... [2018-11-07 18:48:23,502 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:23" (1/1) ... [2018-11-07 18:48:23,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:48:23,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:48:23,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:48:23,519 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:48:23,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:23" (1/1) ... [2018-11-07 18:48:23,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:23" (1/1) ... [2018-11-07 18:48:23,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:23" (1/1) ... [2018-11-07 18:48:23,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:23" (1/1) ... [2018-11-07 18:48:23,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:23" (1/1) ... [2018-11-07 18:48:23,634 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:23" (1/1) ... [2018-11-07 18:48:23,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:23" (1/1) ... [2018-11-07 18:48:23,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:48:23,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:48:23,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:48:23,670 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:48:23,671 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:23" (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 18:48:23,734 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:48:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:48:23,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:48:23,735 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:48:23,735 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:48:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:48:23,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:48:23,736 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:48:23,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:48:28,384 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:48:28,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:48:28 BoogieIcfgContainer [2018-11-07 18:48:28,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:48:28,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:48:28,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:48:28,392 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:48:28,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:48:22" (1/3) ... [2018-11-07 18:48:28,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655d2390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:48:28, skipping insertion in model container [2018-11-07 18:48:28,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:48:23" (2/3) ... [2018-11-07 18:48:28,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@655d2390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:48:28, skipping insertion in model container [2018-11-07 18:48:28,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:48:28" (3/3) ... [2018-11-07 18:48:28,399 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label01_true-unreach-call.c [2018-11-07 18:48:28,410 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:48:28,420 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:48:28,439 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:48:28,485 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:48:28,486 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:48:28,486 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:48:28,486 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:48:28,486 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:48:28,486 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:48:28,486 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:48:28,487 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:48:28,537 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 18:48:28,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2018-11-07 18:48:28,570 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:48:28,572 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:48:28,575 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:48:28,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:48:28,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1178454204, now seen corresponding path program 1 times [2018-11-07 18:48:28,585 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:48:28,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:48:28,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:48:28,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:48:28,646 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:48:28,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:48:29,540 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:48:29,755 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 18:48:29,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:48:29,758 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:48:29,758 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:48:29,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:48:29,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:48:29,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:48:29,789 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 18:48:31,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:48:31,809 INFO L93 Difference]: Finished difference Result 844 states and 1489 transitions. [2018-11-07 18:48:31,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:48:31,813 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2018-11-07 18:48:31,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:48:31,836 INFO L225 Difference]: With dead ends: 844 [2018-11-07 18:48:31,836 INFO L226 Difference]: Without dead ends: 530 [2018-11-07 18:48:31,844 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 18:48:31,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2018-11-07 18:48:31,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 525. [2018-11-07 18:48:31,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-11-07 18:48:31,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 865 transitions. [2018-11-07 18:48:31,949 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 865 transitions. Word has length 193 [2018-11-07 18:48:31,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:48:31,950 INFO L480 AbstractCegarLoop]: Abstraction has 525 states and 865 transitions. [2018-11-07 18:48:31,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:48:31,950 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 865 transitions. [2018-11-07 18:48:31,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2018-11-07 18:48:31,962 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:48:31,963 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:48:31,963 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:48:31,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:48:31,964 INFO L82 PathProgramCache]: Analyzing trace with hash 851918400, now seen corresponding path program 1 times [2018-11-07 18:48:31,964 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:48:31,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:48:31,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:48:31,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:48:31,966 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:48:32,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:48:32,490 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:48:32,491 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:48:32,491 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:48:32,491 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:48:32,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:48:32,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:48:32,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:48:32,494 INFO L87 Difference]: Start difference. First operand 525 states and 865 transitions. Second operand 3 states. [2018-11-07 18:48:34,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:48:34,498 INFO L93 Difference]: Finished difference Result 1477 states and 2511 transitions. [2018-11-07 18:48:34,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:48:34,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 206 [2018-11-07 18:48:34,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:48:34,512 INFO L225 Difference]: With dead ends: 1477 [2018-11-07 18:48:34,513 INFO L226 Difference]: Without dead ends: 958 [2018-11-07 18:48:34,518 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:48:34,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2018-11-07 18:48:34,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 943. [2018-11-07 18:48:34,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 943 states. [2018-11-07 18:48:34,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 943 states to 943 states and 1546 transitions. [2018-11-07 18:48:34,566 INFO L78 Accepts]: Start accepts. Automaton has 943 states and 1546 transitions. Word has length 206 [2018-11-07 18:48:34,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:48:34,566 INFO L480 AbstractCegarLoop]: Abstraction has 943 states and 1546 transitions. [2018-11-07 18:48:34,567 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:48:34,567 INFO L276 IsEmpty]: Start isEmpty. Operand 943 states and 1546 transitions. [2018-11-07 18:48:34,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-07 18:48:34,572 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:48:34,572 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:48:34,573 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:48:34,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:48:34,573 INFO L82 PathProgramCache]: Analyzing trace with hash 584750157, now seen corresponding path program 1 times [2018-11-07 18:48:34,573 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:48:34,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:48:34,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:48:34,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:48:34,575 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:48:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:48:34,819 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 18:48:34,900 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:48:34,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:48:34,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 18:48:34,901 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:48:34,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 18:48:34,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 18:48:34,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 18:48:34,903 INFO L87 Difference]: Start difference. First operand 943 states and 1546 transitions. Second operand 6 states. [2018-11-07 18:48:41,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:48:41,871 INFO L93 Difference]: Finished difference Result 2885 states and 4975 transitions. [2018-11-07 18:48:41,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 18:48:41,875 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-11-07 18:48:41,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:48:41,902 INFO L225 Difference]: With dead ends: 2885 [2018-11-07 18:48:41,902 INFO L226 Difference]: Without dead ends: 1948 [2018-11-07 18:48:41,908 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 18:48:41,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2018-11-07 18:48:42,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1883. [2018-11-07 18:48:42,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1883 states. [2018-11-07 18:48:42,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1883 states to 1883 states and 3103 transitions. [2018-11-07 18:48:42,019 INFO L78 Accepts]: Start accepts. Automaton has 1883 states and 3103 transitions. Word has length 211 [2018-11-07 18:48:42,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:48:42,019 INFO L480 AbstractCegarLoop]: Abstraction has 1883 states and 3103 transitions. [2018-11-07 18:48:42,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 18:48:42,020 INFO L276 IsEmpty]: Start isEmpty. Operand 1883 states and 3103 transitions. [2018-11-07 18:48:42,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-11-07 18:48:42,029 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:48:42,030 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:48:42,030 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:48:42,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:48:42,031 INFO L82 PathProgramCache]: Analyzing trace with hash -223286947, now seen corresponding path program 1 times [2018-11-07 18:48:42,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:48:42,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:48:42,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:48:42,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:48:42,032 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:48:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:48:42,556 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:48:42,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:48:42,556 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:48:42,558 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 219 with the following transitions: [2018-11-07 18:48:42,560 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [36], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1005], [1007], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:48:42,650 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:48:42,650 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:48:46,230 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:48:46,232 INFO L272 AbstractInterpreter]: Visited 197 different actions 388 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 18:48:46,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:48:46,284 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:48:48,057 INFO L227 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 73.79% of their original sizes. [2018-11-07 18:48:48,058 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:48:49,395 INFO L415 sIntCurrentIteration]: We unified 217 AI predicates to 217 [2018-11-07 18:48:49,396 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:48:49,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:48:49,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-07 18:48:49,397 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:48:49,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:48:49,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:48:49,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:48:49,399 INFO L87 Difference]: Start difference. First operand 1883 states and 3103 transitions. Second operand 23 states. [2018-11-07 18:49:26,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:49:26,653 INFO L93 Difference]: Finished difference Result 4608 states and 7567 transitions. [2018-11-07 18:49:26,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 18:49:26,653 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 218 [2018-11-07 18:49:26,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:49:26,674 INFO L225 Difference]: With dead ends: 4608 [2018-11-07 18:49:26,674 INFO L226 Difference]: Without dead ends: 2731 [2018-11-07 18:49:26,681 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 221 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=137, Invalid=565, Unknown=0, NotChecked=0, Total=702 [2018-11-07 18:49:26,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2731 states. [2018-11-07 18:49:26,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2731 to 2729. [2018-11-07 18:49:26,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2729 states. [2018-11-07 18:49:26,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2729 states to 2729 states and 4048 transitions. [2018-11-07 18:49:26,758 INFO L78 Accepts]: Start accepts. Automaton has 2729 states and 4048 transitions. Word has length 218 [2018-11-07 18:49:26,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:49:26,758 INFO L480 AbstractCegarLoop]: Abstraction has 2729 states and 4048 transitions. [2018-11-07 18:49:26,758 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-07 18:49:26,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2729 states and 4048 transitions. [2018-11-07 18:49:26,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-11-07 18:49:26,768 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:49:26,769 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:49:26,769 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:49:26,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:49:26,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1470271054, now seen corresponding path program 1 times [2018-11-07 18:49:26,770 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:49:26,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:49:26,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:49:26,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:49:26,771 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:49:26,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:49:27,221 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:49:27,221 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:49:27,221 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:49:27,222 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-11-07 18:49:27,222 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1005], [1007], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:49:27,240 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:49:27,240 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:49:30,070 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:49:30,070 INFO L272 AbstractInterpreter]: Visited 197 different actions 390 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 18:49:30,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:49:30,089 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:49:31,270 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 73.67% of their original sizes. [2018-11-07 18:49:31,270 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:49:31,906 INFO L415 sIntCurrentIteration]: We unified 224 AI predicates to 224 [2018-11-07 18:49:31,907 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:49:31,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:49:31,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [6] total 28 [2018-11-07 18:49:31,907 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:49:31,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-07 18:49:31,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-07 18:49:31,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2018-11-07 18:49:31,909 INFO L87 Difference]: Start difference. First operand 2729 states and 4048 transitions. Second operand 24 states. [2018-11-07 18:50:52,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:50:52,740 INFO L93 Difference]: Finished difference Result 6562 states and 10156 transitions. [2018-11-07 18:50:52,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 18:50:52,740 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 225 [2018-11-07 18:50:52,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:50:52,764 INFO L225 Difference]: With dead ends: 6562 [2018-11-07 18:50:52,765 INFO L226 Difference]: Without dead ends: 4047 [2018-11-07 18:50:52,774 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 233 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=211, Invalid=845, Unknown=0, NotChecked=0, Total=1056 [2018-11-07 18:50:52,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4047 states. [2018-11-07 18:50:52,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4047 to 4042. [2018-11-07 18:50:52,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4042 states. [2018-11-07 18:50:52,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4042 states to 4042 states and 5634 transitions. [2018-11-07 18:50:52,887 INFO L78 Accepts]: Start accepts. Automaton has 4042 states and 5634 transitions. Word has length 225 [2018-11-07 18:50:52,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:50:52,887 INFO L480 AbstractCegarLoop]: Abstraction has 4042 states and 5634 transitions. [2018-11-07 18:50:52,888 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-07 18:50:52,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4042 states and 5634 transitions. [2018-11-07 18:50:52,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-11-07 18:50:52,902 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:50:52,903 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:50:52,903 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:50:52,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:50:52,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1815954702, now seen corresponding path program 1 times [2018-11-07 18:50:52,904 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:50:52,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:50:52,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:50:52,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:50:52,905 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:50:52,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:50:53,158 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:50:53,159 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:50:53,159 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:50:53,160 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 228 with the following transitions: [2018-11-07 18:50:53,160 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1005], [1007], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:50:53,167 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:50:53,167 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:50:56,350 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:50:56,350 INFO L272 AbstractInterpreter]: Visited 198 different actions 590 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 18:50:56,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:50:56,358 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:50:56,358 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:50:56,358 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 18:50:56,367 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:50:56,368 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:50:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:50:56,574 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:50:56,864 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:50:56,864 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:50:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:50:57,758 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:50:57,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-11-07 18:50:57,759 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:50:57,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 18:50:57,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 18:50:57,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-07 18:50:57,760 INFO L87 Difference]: Start difference. First operand 4042 states and 5634 transitions. Second operand 12 states. [2018-11-07 18:51:06,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:51:06,102 INFO L93 Difference]: Finished difference Result 18455 states and 30466 transitions. [2018-11-07 18:51:06,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-07 18:51:06,105 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 227 [2018-11-07 18:51:06,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:51:06,206 INFO L225 Difference]: With dead ends: 18455 [2018-11-07 18:51:06,209 INFO L226 Difference]: Without dead ends: 14208 [2018-11-07 18:51:06,257 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 462 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2018-11-07 18:51:06,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14208 states. [2018-11-07 18:51:06,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14208 to 14168. [2018-11-07 18:51:06,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14168 states. [2018-11-07 18:51:06,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14168 states to 14168 states and 20852 transitions. [2018-11-07 18:51:06,764 INFO L78 Accepts]: Start accepts. Automaton has 14168 states and 20852 transitions. Word has length 227 [2018-11-07 18:51:06,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:51:06,765 INFO L480 AbstractCegarLoop]: Abstraction has 14168 states and 20852 transitions. [2018-11-07 18:51:06,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 18:51:06,765 INFO L276 IsEmpty]: Start isEmpty. Operand 14168 states and 20852 transitions. [2018-11-07 18:51:06,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-07 18:51:06,815 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:51:06,816 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:06,816 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:51:06,816 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:51:06,816 INFO L82 PathProgramCache]: Analyzing trace with hash 1873001038, now seen corresponding path program 1 times [2018-11-07 18:51:06,817 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:51:06,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:51:06,818 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:51:06,818 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:51:06,818 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:51:06,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:51:07,315 WARN L179 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 6 [2018-11-07 18:51:08,180 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 18:51:08,180 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:51:08,181 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:51:08,181 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 242 with the following transitions: [2018-11-07 18:51:08,181 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [127], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1005], [1007], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:51:08,187 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:51:08,188 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:51:10,918 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:51:10,918 INFO L272 AbstractInterpreter]: Visited 198 different actions 591 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-07 18:51:10,926 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:51:10,926 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:51:10,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:51:10,926 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 18:51:10,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:51:10,935 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:51:11,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:51:11,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:51:11,312 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:51:11,312 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:51:11,650 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 47 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:51:11,671 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:51:11,671 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2018-11-07 18:51:11,672 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:51:11,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 18:51:11,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 18:51:11,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2018-11-07 18:51:11,673 INFO L87 Difference]: Start difference. First operand 14168 states and 20852 transitions. Second operand 12 states. [2018-11-07 18:51:20,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:51:20,128 INFO L93 Difference]: Finished difference Result 62497 states and 105140 transitions. [2018-11-07 18:51:20,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-07 18:51:20,129 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 241 [2018-11-07 18:51:20,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:51:20,502 INFO L225 Difference]: With dead ends: 62497 [2018-11-07 18:51:20,502 INFO L226 Difference]: Without dead ends: 48543 [2018-11-07 18:51:20,636 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 508 GetRequests, 473 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2018-11-07 18:51:20,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48543 states. [2018-11-07 18:51:22,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48543 to 46924. [2018-11-07 18:51:22,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46924 states. [2018-11-07 18:51:22,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46924 states to 46924 states and 69326 transitions. [2018-11-07 18:51:22,615 INFO L78 Accepts]: Start accepts. Automaton has 46924 states and 69326 transitions. Word has length 241 [2018-11-07 18:51:22,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:51:22,615 INFO L480 AbstractCegarLoop]: Abstraction has 46924 states and 69326 transitions. [2018-11-07 18:51:22,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 18:51:22,616 INFO L276 IsEmpty]: Start isEmpty. Operand 46924 states and 69326 transitions. [2018-11-07 18:51:22,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-11-07 18:51:22,725 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:51:22,725 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 18:51:22,726 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:51:22,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:51:22,726 INFO L82 PathProgramCache]: Analyzing trace with hash 191668955, now seen corresponding path program 1 times [2018-11-07 18:51:22,726 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:51:22,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:51:22,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:51:22,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:51:22,727 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:51:22,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:51:23,034 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 18:51:23,533 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 56 proven. 33 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 18:51:23,533 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:51:23,533 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:51:23,533 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-11-07 18:51:23,534 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1005], [1007], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:51:23,540 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:51:23,540 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:51:25,046 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:51:25,047 INFO L272 AbstractInterpreter]: Visited 198 different actions 390 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 18:51:25,088 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:51:25,088 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:51:26,383 INFO L227 lantSequenceWeakener]: Weakened 95 states. On average, predicates are now at 79.62% of their original sizes. [2018-11-07 18:51:26,384 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:51:27,230 INFO L415 sIntCurrentIteration]: We unified 255 AI predicates to 255 [2018-11-07 18:51:27,231 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:51:27,231 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:51:27,231 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [10] total 32 [2018-11-07 18:51:27,231 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:51:27,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-07 18:51:27,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-07 18:51:27,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2018-11-07 18:51:27,233 INFO L87 Difference]: Start difference. First operand 46924 states and 69326 transitions. Second operand 24 states. [2018-11-07 18:52:10,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:52:10,431 INFO L93 Difference]: Finished difference Result 94479 states and 139410 transitions. [2018-11-07 18:52:10,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-07 18:52:10,431 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 256 [2018-11-07 18:52:10,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:52:10,656 INFO L225 Difference]: With dead ends: 94479 [2018-11-07 18:52:10,657 INFO L226 Difference]: Without dead ends: 47769 [2018-11-07 18:52:10,781 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 264 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=243, Invalid=813, Unknown=0, NotChecked=0, Total=1056 [2018-11-07 18:52:10,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47769 states. [2018-11-07 18:52:11,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47769 to 47766. [2018-11-07 18:52:11,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47766 states. [2018-11-07 18:52:12,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47766 states to 47766 states and 70213 transitions. [2018-11-07 18:52:12,125 INFO L78 Accepts]: Start accepts. Automaton has 47766 states and 70213 transitions. Word has length 256 [2018-11-07 18:52:12,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:52:12,125 INFO L480 AbstractCegarLoop]: Abstraction has 47766 states and 70213 transitions. [2018-11-07 18:52:12,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-07 18:52:12,125 INFO L276 IsEmpty]: Start isEmpty. Operand 47766 states and 70213 transitions. [2018-11-07 18:52:12,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2018-11-07 18:52:12,175 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:52:12,176 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:12,176 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:52:12,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:52:12,177 INFO L82 PathProgramCache]: Analyzing trace with hash -762328005, now seen corresponding path program 1 times [2018-11-07 18:52:12,177 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:52:12,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:52:12,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:52:12,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:52:12,178 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:52:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-11-07 18:52:12,747 WARN L187 SmtUtils]: Removed 4 from assertion stack [2018-11-07 18:52:12,748 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 18:52:12,756 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 18:52:12,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 06:52:12 BoogieIcfgContainer [2018-11-07 18:52:12,757 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 18:52:12,758 INFO L168 Benchmark]: Toolchain (without parser) took 230678.23 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 695.4 MB in the end (delta: 713.8 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-11-07 18:52:12,760 INFO L168 Benchmark]: CDTParser took 0.25 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 18:52:12,760 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1216.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-07 18:52:12,762 INFO L168 Benchmark]: Boogie Procedure Inliner took 220.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -882.1 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. [2018-11-07 18:52:12,764 INFO L168 Benchmark]: Boogie Preprocessor took 150.00 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 18:52:12,765 INFO L168 Benchmark]: RCFGBuilder took 4716.25 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: 261.9 MB). Peak memory consumption was 261.9 MB. Max. memory is 7.1 GB. [2018-11-07 18:52:12,765 INFO L168 Benchmark]: TraceAbstraction took 224370.21 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 695.4 MB in the end (delta: 1.3 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. [2018-11-07 18:52:12,773 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 1216.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 220.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 759.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -882.1 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.00 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 4716.25 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: 261.9 MB). Peak memory consumption was 261.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224370.21 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 695.4 MB in the end (delta: 1.3 GB). Peak memory consumption was 3.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1593]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1593). Cancelled while BasicCegarLoop was analyzing trace of length 302 with TraceHistMax 4,while InterpolatingTraceCheckCraig was constructing Craig interpolants,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 12. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 224.2s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 190.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1900 SDtfs, 21690 SDslu, 3622 SDs, 0 SdLazy, 20552 SolverSat, 6620 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 120.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1749 GetRequests, 1573 SyntacticMatches, 9 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1161 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47766occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.0s AbstIntTime, 5 AbstIntIterations, 3 AbstIntStrong, 0.998846762962944 AbsIntWeakeningRatio, 0.2801724137931034 AbsIntAvgWeakeningVarsNumRemoved, 62.90948275862069 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 1754 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 2245 NumberOfCodeBlocks, 2245 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2701 ConstructedInterpolants, 0 QuantifiedInterpolants, 1362475 SizeOfPredicates, 10 NumberOfNonLiveVariables, 2097 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 360/468 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown