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_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:56:38,153 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:56:38,158 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:56:38,178 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:56:38,178 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:56:38,179 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:56:38,180 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:56:38,182 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:56:38,184 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:56:38,185 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:56:38,186 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:56:38,186 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:56:38,187 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:56:38,188 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:56:38,189 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:56:38,190 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:56:38,191 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:56:38,194 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:56:38,199 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:56:38,204 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:56:38,205 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:56:38,207 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:56:38,210 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:56:38,214 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:56:38,214 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:56:38,215 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:56:38,216 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:56:38,217 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:56:38,218 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:56:38,219 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:56:38,219 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:56:38,220 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:56:38,220 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:56:38,220 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:56:38,221 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:56:38,222 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:56:38,222 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-07 18:56:38,239 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:56:38,239 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:56:38,240 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:56:38,241 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:56:38,241 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:56:38,241 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:56:38,241 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:56:38,241 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:56:38,242 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:56:38,242 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:56:38,242 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:56:38,242 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:56:38,242 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:56:38,243 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:56:38,243 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:56:38,244 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:56:38,244 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:56:38,244 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:56:38,244 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:56:38,244 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:56:38,245 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:56:38,245 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:56:38,245 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:56:38,245 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:56:38,245 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:56:38,246 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:56:38,246 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:56:38,246 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:56:38,246 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:56:38,246 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:56:38,247 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:56:38,247 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:56:38,247 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:56:38,247 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:56:38,247 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:56:38,292 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:56:38,307 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:56:38,313 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:56:38,315 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:56:38,315 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:56:38,316 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label49_true-unreach-call.c [2018-11-07 18:56:38,388 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0501b0526/5914746273e84491973f291917c7792f/FLAG2c25636d2 [2018-11-07 18:56:39,105 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:56:39,106 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label49_true-unreach-call.c [2018-11-07 18:56:39,124 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0501b0526/5914746273e84491973f291917c7792f/FLAG2c25636d2 [2018-11-07 18:56:39,141 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0501b0526/5914746273e84491973f291917c7792f [2018-11-07 18:56:39,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:56:39,156 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:56:39,157 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:56:39,157 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:56:39,162 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:56:39,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:56:39" (1/1) ... [2018-11-07 18:56:39,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d010140 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:39, skipping insertion in model container [2018-11-07 18:56:39,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:56:39" (1/1) ... [2018-11-07 18:56:39,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:56:39,275 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:56:40,080 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:56:40,087 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:56:40,422 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:56:40,459 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:56:40,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:40 WrapperNode [2018-11-07 18:56:40,460 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:56:40,461 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:56:40,461 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:56:40,461 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:56:40,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:40" (1/1) ... [2018-11-07 18:56:40,648 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:40" (1/1) ... [2018-11-07 18:56:40,657 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:56:40,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:56:40,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:56:40,658 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:56:40,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:40" (1/1) ... [2018-11-07 18:56:40,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:40" (1/1) ... [2018-11-07 18:56:40,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:40" (1/1) ... [2018-11-07 18:56:40,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:40" (1/1) ... [2018-11-07 18:56:40,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:40" (1/1) ... [2018-11-07 18:56:40,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:40" (1/1) ... [2018-11-07 18:56:40,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:40" (1/1) ... [2018-11-07 18:56:40,828 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:56:40,829 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:56:40,829 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:56:40,829 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:56:40,830 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:40" (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 18:56:40,905 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:56:40,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:56:40,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:56:40,906 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:56:40,906 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:56:40,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:56:40,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:56:40,907 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:56:40,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:56:45,693 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:56:45,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:56:45 BoogieIcfgContainer [2018-11-07 18:56:45,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:56:45,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:56:45,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:56:45,700 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:56:45,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:56:39" (1/3) ... [2018-11-07 18:56:45,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318dfa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:56:45, skipping insertion in model container [2018-11-07 18:56:45,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:40" (2/3) ... [2018-11-07 18:56:45,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@318dfa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:56:45, skipping insertion in model container [2018-11-07 18:56:45,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:56:45" (3/3) ... [2018-11-07 18:56:45,704 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label49_true-unreach-call.c [2018-11-07 18:56:45,715 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:56:45,727 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:56:45,745 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:56:45,785 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:56:45,786 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:56:45,786 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:56:45,786 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:56:45,786 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:56:45,787 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:56:45,787 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:56:45,787 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:56:45,818 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 18:56:45,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-07 18:56:45,837 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:45,838 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] [2018-11-07 18:56:45,841 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:45,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:45,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1345868708, now seen corresponding path program 1 times [2018-11-07 18:56:45,849 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:45,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:45,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:45,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:45,900 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:46,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:46,767 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:56:46,941 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 18:56:46,945 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:56:46,945 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 18:56:46,946 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:46,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 18:56:46,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 18:56:46,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 18:56:46,977 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 18:56:49,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:56:49,366 INFO L93 Difference]: Finished difference Result 844 states and 1489 transitions. [2018-11-07 18:56:49,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 18:56:49,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2018-11-07 18:56:49,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:56:49,392 INFO L225 Difference]: With dead ends: 844 [2018-11-07 18:56:49,392 INFO L226 Difference]: Without dead ends: 530 [2018-11-07 18:56:49,401 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 18:56:49,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2018-11-07 18:56:49,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 525. [2018-11-07 18:56:49,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 525 states. [2018-11-07 18:56:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 865 transitions. [2018-11-07 18:56:49,505 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 865 transitions. Word has length 175 [2018-11-07 18:56:49,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:56:49,507 INFO L480 AbstractCegarLoop]: Abstraction has 525 states and 865 transitions. [2018-11-07 18:56:49,507 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 18:56:49,507 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 865 transitions. [2018-11-07 18:56:49,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-11-07 18:56:49,520 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:49,521 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] [2018-11-07 18:56:49,521 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:49,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:49,522 INFO L82 PathProgramCache]: Analyzing trace with hash 396212824, now seen corresponding path program 1 times [2018-11-07 18:56:49,522 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:49,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:49,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:49,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:49,527 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:49,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:50,164 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:56:50,165 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:56:50,165 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:56:50,166 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 189 with the following transitions: [2018-11-07 18:56:50,168 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [28], [29], [33], [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], [861], [863], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:56:50,234 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:56:50,235 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:56:51,758 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:56:51,760 INFO L272 AbstractInterpreter]: Visited 175 different actions 175 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 18:56:51,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:51,797 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:56:53,085 INFO L227 lantSequenceWeakener]: Weakened 182 states. On average, predicates are now at 72.34% of their original sizes. [2018-11-07 18:56:53,085 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:56:54,710 INFO L415 sIntCurrentIteration]: We unified 187 AI predicates to 187 [2018-11-07 18:56:54,711 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:56:54,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:56:54,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [7] total 20 [2018-11-07 18:56:54,713 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:54,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-07 18:56:54,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-07 18:56:54,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2018-11-07 18:56:54,716 INFO L87 Difference]: Start difference. First operand 525 states and 865 transitions. Second operand 15 states. [2018-11-07 18:57:24,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:57:24,353 INFO L93 Difference]: Finished difference Result 1254 states and 2061 transitions. [2018-11-07 18:57:24,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 18:57:24,353 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 188 [2018-11-07 18:57:24,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:57:24,361 INFO L225 Difference]: With dead ends: 1254 [2018-11-07 18:57:24,362 INFO L226 Difference]: Without dead ends: 735 [2018-11-07 18:57:24,367 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 190 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2018-11-07 18:57:24,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2018-11-07 18:57:24,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 733. [2018-11-07 18:57:24,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2018-11-07 18:57:24,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1081 transitions. [2018-11-07 18:57:24,423 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1081 transitions. Word has length 188 [2018-11-07 18:57:24,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:57:24,424 INFO L480 AbstractCegarLoop]: Abstraction has 733 states and 1081 transitions. [2018-11-07 18:57:24,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-07 18:57:24,424 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1081 transitions. [2018-11-07 18:57:24,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-11-07 18:57:24,429 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:57:24,429 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 18:57:24,430 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:57:24,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:57:24,430 INFO L82 PathProgramCache]: Analyzing trace with hash -790774419, now seen corresponding path program 1 times [2018-11-07 18:57:24,431 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:57:24,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:57:24,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:57:24,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:57:24,432 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:57:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:57:24,801 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:57:24,801 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:57:24,802 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:57:24,802 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 198 with the following transitions: [2018-11-07 18:57:24,803 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [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], [861], [863], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:57:24,813 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:57:24,813 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:57:27,304 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:57:27,304 INFO L272 AbstractInterpreter]: Visited 178 different actions 352 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 18:57:27,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:57:27,311 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:57:28,443 INFO L227 lantSequenceWeakener]: Weakened 194 states. On average, predicates are now at 72.2% of their original sizes. [2018-11-07 18:57:28,443 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:57:28,822 INFO L415 sIntCurrentIteration]: We unified 196 AI predicates to 196 [2018-11-07 18:57:28,823 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:57:28,823 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:57:28,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-11-07 18:57:28,823 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:57:28,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 18:57:28,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 18:57:28,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2018-11-07 18:57:28,826 INFO L87 Difference]: Start difference. First operand 733 states and 1081 transitions. Second operand 16 states. [2018-11-07 18:58:40,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:58:40,726 INFO L93 Difference]: Finished difference Result 2120 states and 3556 transitions. [2018-11-07 18:58:40,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 18:58:40,726 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 197 [2018-11-07 18:58:40,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:58:40,735 INFO L225 Difference]: With dead ends: 2120 [2018-11-07 18:58:40,735 INFO L226 Difference]: Without dead ends: 1601 [2018-11-07 18:58:40,739 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 205 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2018-11-07 18:58:40,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2018-11-07 18:58:40,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1597. [2018-11-07 18:58:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1597 states. [2018-11-07 18:58:40,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2067 transitions. [2018-11-07 18:58:40,784 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2067 transitions. Word has length 197 [2018-11-07 18:58:40,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:58:40,785 INFO L480 AbstractCegarLoop]: Abstraction has 1597 states and 2067 transitions. [2018-11-07 18:58:40,785 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 18:58:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2067 transitions. [2018-11-07 18:58:40,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-11-07 18:58:40,790 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:58:40,791 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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 18:58:40,791 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:58:40,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:40,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1852838586, now seen corresponding path program 1 times [2018-11-07 18:58:40,792 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:58:40,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:40,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:58:40,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:40,793 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:58:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:58:41,231 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:58:41,232 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:58:41,232 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:58:41,232 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 202 with the following transitions: [2018-11-07 18:58:41,233 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [32], [33], [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], [861], [863], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:58:41,241 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:58:41,241 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:58:42,948 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:58:42,948 INFO L272 AbstractInterpreter]: Visited 179 different actions 352 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 18:58:42,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:42,959 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:58:44,440 INFO L227 lantSequenceWeakener]: Weakened 46 states. On average, predicates are now at 81.8% of their original sizes. [2018-11-07 18:58:44,440 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:58:48,670 INFO L415 sIntCurrentIteration]: We unified 200 AI predicates to 200 [2018-11-07 18:58:48,670 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:58:48,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:58:48,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-07 18:58:48,671 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:58:48,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-07 18:58:48,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-07 18:58:48,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2018-11-07 18:58:48,672 INFO L87 Difference]: Start difference. First operand 1597 states and 2067 transitions. Second operand 21 states. [2018-11-07 19:00:01,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 19:00:01,686 INFO L93 Difference]: Finished difference Result 3192 states and 4376 transitions. [2018-11-07 19:00:01,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-07 19:00:01,687 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 201 [2018-11-07 19:00:01,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 19:00:01,697 INFO L225 Difference]: With dead ends: 3192 [2018-11-07 19:00:01,698 INFO L226 Difference]: Without dead ends: 2228 [2018-11-07 19:00:01,701 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 211 GetRequests, 148 SyntacticMatches, 33 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=211, Invalid=781, Unknown=0, NotChecked=0, Total=992 [2018-11-07 19:00:01,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2228 states. [2018-11-07 19:00:01,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2228 to 2225. [2018-11-07 19:00:01,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2225 states. [2018-11-07 19:00:01,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 2741 transitions. [2018-11-07 19:00:01,761 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 2741 transitions. Word has length 201 [2018-11-07 19:00:01,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 19:00:01,761 INFO L480 AbstractCegarLoop]: Abstraction has 2225 states and 2741 transitions. [2018-11-07 19:00:01,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-07 19:00:01,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 2741 transitions. [2018-11-07 19:00:01,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-11-07 19:00:01,767 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 19:00:01,767 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] [2018-11-07 19:00:01,768 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 19:00:01,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 19:00:01,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1393647498, now seen corresponding path program 1 times [2018-11-07 19:00:01,768 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 19:00:01,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 19:00:01,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 19:00:01,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 19:00:01,770 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 19:00:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 19:00:02,080 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 19:00:02,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 19:00:02,081 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 19:00:02,081 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 210 with the following transitions: [2018-11-07 19:00:02,082 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], [861], [863], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 19:00:02,087 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 19:00:02,088 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 19:00:04,862 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 19:00:04,862 INFO L272 AbstractInterpreter]: Visited 180 different actions 536 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 19:00:04,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 19:00:04,870 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 19:00:04,870 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 19:00:04,870 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 19:00:04,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 19:00:04,884 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 19:00:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 19:00:05,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 19:00:05,759 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 19:00:05,760 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 19:00:05,934 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 19:00:06,361 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 19:00:06,396 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 19:00:06,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-11-07 19:00:06,396 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 19:00:06,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-07 19:00:06,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-07 19:00:06,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-07 19:00:06,398 INFO L87 Difference]: Start difference. First operand 2225 states and 2741 transitions. Second operand 12 states. [2018-11-07 19:00:14,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 19:00:14,448 INFO L93 Difference]: Finished difference Result 6689 states and 9828 transitions. [2018-11-07 19:00:14,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-07 19:00:14,455 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 209 [2018-11-07 19:00:14,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 19:00:14,491 INFO L225 Difference]: With dead ends: 6689 [2018-11-07 19:00:14,491 INFO L226 Difference]: Without dead ends: 4887 [2018-11-07 19:00:14,506 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 426 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 443 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=409, Invalid=1313, Unknown=0, NotChecked=0, Total=1722 [2018-11-07 19:00:14,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4887 states. [2018-11-07 19:00:14,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4887 to 4883. [2018-11-07 19:00:14,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4883 states. [2018-11-07 19:00:14,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4883 states to 4883 states and 6579 transitions. [2018-11-07 19:00:14,660 INFO L78 Accepts]: Start accepts. Automaton has 4883 states and 6579 transitions. Word has length 209 [2018-11-07 19:00:14,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 19:00:14,660 INFO L480 AbstractCegarLoop]: Abstraction has 4883 states and 6579 transitions. [2018-11-07 19:00:14,661 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-07 19:00:14,661 INFO L276 IsEmpty]: Start isEmpty. Operand 4883 states and 6579 transitions. [2018-11-07 19:00:14,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-11-07 19:00:14,682 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 19:00:14,683 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:00:14,683 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 19:00:14,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 19:00:14,684 INFO L82 PathProgramCache]: Analyzing trace with hash -2054469926, now seen corresponding path program 1 times [2018-11-07 19:00:14,684 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 19:00:14,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 19:00:14,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 19:00:14,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 19:00:14,685 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 19:00:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 19:00:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 19:00:15,340 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 19:00:15,340 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 19:00:15,341 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 300 with the following transitions: [2018-11-07 19:00:15,341 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [44], [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], [460], [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], [861], [863], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 19:00:15,352 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 19:00:15,352 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 19:00:17,525 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 19:00:17,526 INFO L272 AbstractInterpreter]: Visited 179 different actions 352 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 19:00:17,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 19:00:17,553 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 19:00:19,069 INFO L227 lantSequenceWeakener]: Weakened 296 states. On average, predicates are now at 71.42% of their original sizes. [2018-11-07 19:00:19,069 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 19:00:19,360 INFO L415 sIntCurrentIteration]: We unified 298 AI predicates to 298 [2018-11-07 19:00:19,360 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 19:00:19,361 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 19:00:19,361 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-07 19:00:19,361 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 19:00:19,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 19:00:19,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 19:00:19,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2018-11-07 19:00:19,362 INFO L87 Difference]: Start difference. First operand 4883 states and 6579 transitions. Second operand 18 states. Received shutdown request... [2018-11-07 19:00:37,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 19:00:37,252 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 19:00:37,258 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 19:00:37,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:00:37 BoogieIcfgContainer [2018-11-07 19:00:37,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 19:00:37,259 INFO L168 Benchmark]: Toolchain (without parser) took 238105.08 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 2.4 GB in the end (delta: -989.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 19:00:37,260 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 19:00:37,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1303.99 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:37,261 INFO L168 Benchmark]: Boogie Procedure Inliner took 195.87 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -853.0 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:37,262 INFO L168 Benchmark]: Boogie Preprocessor took 170.95 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 19:00:37,263 INFO L168 Benchmark]: RCFGBuilder took 4866.33 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 259.2 MB). Peak memory consumption was 259.2 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:37,264 INFO L168 Benchmark]: TraceAbstraction took 231562.36 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 2.4 GB in the end (delta: -480.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. [2018-11-07 19:00:37,269 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1303.99 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: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 195.87 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 726.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -853.0 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 170.95 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4866.33 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 259.2 MB). Peak memory consumption was 259.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 231562.36 ms. Allocated memory was 2.2 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 2.4 GB in the end (delta: -480.0 MB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1539]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1539). Cancelled while BasicCegarLoop was constructing difference of abstraction (4883states) and FLOYD_HOARE automaton (currently 16 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (1092 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 231.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 203.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1378 SDtfs, 11135 SDslu, 3038 SDs, 0 SdLazy, 15757 SolverSat, 2927 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 127.4s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 1387 GetRequests, 1214 SyntacticMatches, 37 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 913 ImplicationChecksByTransitivity, 9.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4883occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.8s AbstIntTime, 5 AbstIntIterations, 4 AbstIntStrong, 0.9992064848079996 AbsIntWeakeningRatio, 0.26106696935300794 AbsIntAvgWeakeningVarsNumRemoved, 54.91032917139614 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 18 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 1478 NumberOfCodeBlocks, 1478 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1679 ConstructedInterpolants, 0 QuantifiedInterpolants, 770130 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1023 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 8 InterpolantComputations, 1 PerfectInterpolantSequences, 268/316 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown