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/Problem12_label06_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 17:46:49,046 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 17:46:49,048 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 17:46:49,067 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 17:46:49,068 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 17:46:49,069 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 17:46:49,071 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 17:46:49,073 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 17:46:49,076 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 17:46:49,078 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 17:46:49,079 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 17:46:49,079 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 17:46:49,082 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 17:46:49,083 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 17:46:49,084 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 17:46:49,087 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 17:46:49,088 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 17:46:49,091 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 17:46:49,100 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 17:46:49,103 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 17:46:49,105 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 17:46:49,109 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 17:46:49,113 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 17:46:49,113 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 17:46:49,113 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 17:46:49,114 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 17:46:49,115 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 17:46:49,116 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 17:46:49,119 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 17:46:49,122 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 17:46:49,122 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 17:46:49,123 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 17:46:49,123 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 17:46:49,124 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 17:46:49,125 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 17:46:49,125 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 17:46:49,127 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 17:46:49,154 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 17:46:49,155 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 17:46:49,155 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 17:46:49,156 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 17:46:49,156 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 17:46:49,156 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 17:46:49,158 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 17:46:49,158 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 17:46:49,158 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 17:46:49,158 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 17:46:49,158 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 17:46:49,159 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 17:46:49,159 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 17:46:49,160 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 17:46:49,161 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 17:46:49,161 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 17:46:49,161 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 17:46:49,161 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 17:46:49,161 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 17:46:49,163 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 17:46:49,163 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 17:46:49,164 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 17:46:49,164 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 17:46:49,164 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 17:46:49,164 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 17:46:49,165 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 17:46:49,165 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 17:46:49,165 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 17:46:49,165 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 17:46:49,165 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 17:46:49,166 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 17:46:49,166 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 17:46:49,166 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 17:46:49,166 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 17:46:49,166 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 17:46:49,231 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 17:46:49,247 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 17:46:49,253 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 17:46:49,254 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 17:46:49,255 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 17:46:49,256 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label06_false-unreach-call.c [2018-11-07 17:46:49,330 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ee983335/76d793807617439cb9f51a1e89ed82d2/FLAG38fb14185 [2018-11-07 17:46:50,068 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 17:46:50,069 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label06_false-unreach-call.c [2018-11-07 17:46:50,098 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ee983335/76d793807617439cb9f51a1e89ed82d2/FLAG38fb14185 [2018-11-07 17:46:50,114 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ee983335/76d793807617439cb9f51a1e89ed82d2 [2018-11-07 17:46:50,126 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 17:46:50,128 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 17:46:50,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 17:46:50,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 17:46:50,133 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 17:46:50,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:46:50" (1/1) ... [2018-11-07 17:46:50,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@648bd6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:46:50, skipping insertion in model container [2018-11-07 17:46:50,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:46:50" (1/1) ... [2018-11-07 17:46:50,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 17:46:50,298 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 17:46:51,613 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:46:51,619 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 17:46:52,287 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 17:46:52,324 INFO L193 MainTranslator]: Completed translation [2018-11-07 17:46:52,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:46:52 WrapperNode [2018-11-07 17:46:52,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 17:46:52,326 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 17:46:52,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 17:46:52,327 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 17:46:52,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:46:52" (1/1) ... [2018-11-07 17:46:52,782 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:46:52" (1/1) ... [2018-11-07 17:46:52,793 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 17:46:52,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 17:46:52,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 17:46:52,794 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 17:46:52,806 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:46:52" (1/1) ... [2018-11-07 17:46:52,806 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:46:52" (1/1) ... [2018-11-07 17:46:52,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:46:52" (1/1) ... [2018-11-07 17:46:52,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:46:52" (1/1) ... [2018-11-07 17:46:52,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:46:52" (1/1) ... [2018-11-07 17:46:53,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:46:52" (1/1) ... [2018-11-07 17:46:53,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:46:52" (1/1) ... [2018-11-07 17:46:53,082 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 17:46:53,082 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 17:46:53,082 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 17:46:53,083 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 17:46:53,084 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:46:52" (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 17:46:53,162 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 17:46:53,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 17:46:53,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 17:46:53,163 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 17:46:53,163 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 17:46:53,164 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 17:46:53,164 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 17:46:53,164 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 17:46:53,164 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 17:46:53,164 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 17:46:53,165 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 17:46:53,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 17:46:53,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 17:46:53,165 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 17:46:53,166 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 17:47:01,718 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 17:47:01,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:47:01 BoogieIcfgContainer [2018-11-07 17:47:01,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 17:47:01,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 17:47:01,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 17:47:01,723 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 17:47:01,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:46:50" (1/3) ... [2018-11-07 17:47:01,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670d73fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:47:01, skipping insertion in model container [2018-11-07 17:47:01,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:46:52" (2/3) ... [2018-11-07 17:47:01,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@670d73fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:47:01, skipping insertion in model container [2018-11-07 17:47:01,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:47:01" (3/3) ... [2018-11-07 17:47:01,727 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label06_false-unreach-call.c [2018-11-07 17:47:01,738 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 17:47:01,748 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 17:47:01,767 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 17:47:01,815 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 17:47:01,816 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 17:47:01,816 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 17:47:01,816 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 17:47:01,816 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 17:47:01,816 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 17:47:01,817 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 17:47:01,817 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 17:47:01,859 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 17:47:01,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-07 17:47:01,867 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:47:01,969 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] [2018-11-07 17:47:01,972 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:47:02,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:02,005 INFO L82 PathProgramCache]: Analyzing trace with hash 129457476, now seen corresponding path program 1 times [2018-11-07 17:47:02,007 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:47:02,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:02,064 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:47:02,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:02,065 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:47:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:47:02,436 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 17:47:02,546 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 17:47:02,549 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:47:02,549 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 17:47:02,550 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:47:02,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 17:47:02,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 17:47:02,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 17:47:02,576 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 17:47:09,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:47:09,796 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 17:47:09,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 17:47:09,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2018-11-07 17:47:09,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:47:09,849 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 17:47:09,849 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 17:47:09,866 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 17:47:09,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 17:47:10,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 17:47:10,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 17:47:10,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-11-07 17:47:10,039 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 30 [2018-11-07 17:47:10,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:47:10,040 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-11-07 17:47:10,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 17:47:10,040 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-11-07 17:47:10,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-11-07 17:47:10,047 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:47:10,048 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:47:10,049 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:47:10,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:10,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1691780218, now seen corresponding path program 1 times [2018-11-07 17:47:10,049 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:47:10,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:10,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:47:10,052 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:47:10,052 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:47:10,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:47:10,630 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 17:47:10,630 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:47:10,631 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:47:10,632 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 107 with the following transitions: [2018-11-07 17:47:10,634 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2007], [2009], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 17:47:10,695 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:47:10,703 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:47:11,581 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:47:11,582 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 17:47:11,630 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:47:11,630 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:47:12,112 INFO L227 lantSequenceWeakener]: Weakened 103 states. On average, predicates are now at 75.32% of their original sizes. [2018-11-07 17:47:12,113 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:47:12,610 INFO L415 sIntCurrentIteration]: We unified 105 AI predicates to 105 [2018-11-07 17:47:12,610 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:47:12,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:47:12,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-11-07 17:47:12,611 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:47:12,613 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 17:47:12,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 17:47:12,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-07 17:47:12,614 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 11 states. [2018-11-07 17:47:22,551 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:48:16,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:48:16,944 INFO L93 Difference]: Finished difference Result 5512 states and 10057 transitions. [2018-11-07 17:48:16,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 17:48:16,944 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 106 [2018-11-07 17:48:16,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:48:16,964 INFO L225 Difference]: With dead ends: 5512 [2018-11-07 17:48:16,964 INFO L226 Difference]: Without dead ends: 3914 [2018-11-07 17:48:16,970 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 114 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2018-11-07 17:48:16,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2018-11-07 17:48:17,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3911. [2018-11-07 17:48:17,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3911 states. [2018-11-07 17:48:17,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3911 states to 3911 states and 5199 transitions. [2018-11-07 17:48:17,057 INFO L78 Accepts]: Start accepts. Automaton has 3911 states and 5199 transitions. Word has length 106 [2018-11-07 17:48:17,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:48:17,058 INFO L480 AbstractCegarLoop]: Abstraction has 3911 states and 5199 transitions. [2018-11-07 17:48:17,058 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-07 17:48:17,058 INFO L276 IsEmpty]: Start isEmpty. Operand 3911 states and 5199 transitions. [2018-11-07 17:48:17,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2018-11-07 17:48:17,072 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:48:17,072 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 17:48:17,073 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:48:17,073 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:48:17,073 INFO L82 PathProgramCache]: Analyzing trace with hash 138937116, now seen corresponding path program 1 times [2018-11-07 17:48:17,073 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:48:17,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:48:17,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:48:17,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:48:17,075 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:48:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:48:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-07 17:48:17,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 17:48:17,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 17:48:17,377 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:48:17,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 17:48:17,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 17:48:17,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:48:17,379 INFO L87 Difference]: Start difference. First operand 3911 states and 5199 transitions. Second operand 4 states. [2018-11-07 17:48:26,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:48:26,080 INFO L93 Difference]: Finished difference Result 8581 states and 13781 transitions. [2018-11-07 17:48:26,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 17:48:26,081 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 252 [2018-11-07 17:48:26,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:48:26,119 INFO L225 Difference]: With dead ends: 8581 [2018-11-07 17:48:26,119 INFO L226 Difference]: Without dead ends: 6983 [2018-11-07 17:48:26,129 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 17:48:26,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6983 states. [2018-11-07 17:48:26,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6983 to 6983. [2018-11-07 17:48:26,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6983 states. [2018-11-07 17:48:26,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6983 states to 6983 states and 9558 transitions. [2018-11-07 17:48:26,298 INFO L78 Accepts]: Start accepts. Automaton has 6983 states and 9558 transitions. Word has length 252 [2018-11-07 17:48:26,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:48:26,299 INFO L480 AbstractCegarLoop]: Abstraction has 6983 states and 9558 transitions. [2018-11-07 17:48:26,299 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 17:48:26,300 INFO L276 IsEmpty]: Start isEmpty. Operand 6983 states and 9558 transitions. [2018-11-07 17:48:26,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-11-07 17:48:26,306 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:48:26,307 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 17:48:26,307 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:48:26,307 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:48:26,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1427987319, now seen corresponding path program 1 times [2018-11-07 17:48:26,308 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:48:26,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:48:26,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:48:26,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:48:26,309 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:48:26,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:48:26,883 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 49 proven. 68 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-07 17:48:26,883 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:48:26,884 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:48:26,884 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 258 with the following transitions: [2018-11-07 17:48:26,885 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2007], [2009], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2388], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2680], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 17:48:26,894 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:48:26,894 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:48:27,050 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:48:27,292 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:48:27,292 INFO L272 AbstractInterpreter]: Visited 158 different actions 310 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 17:48:27,299 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:48:27,299 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:48:27,911 INFO L227 lantSequenceWeakener]: Weakened 56 states. On average, predicates are now at 77.03% of their original sizes. [2018-11-07 17:48:27,911 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:48:28,839 INFO L415 sIntCurrentIteration]: We unified 256 AI predicates to 256 [2018-11-07 17:48:28,840 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:48:28,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:48:28,840 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [6] total 29 [2018-11-07 17:48:28,841 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:48:28,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 17:48:28,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 17:48:28,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2018-11-07 17:48:28,843 INFO L87 Difference]: Start difference. First operand 6983 states and 9558 transitions. Second operand 25 states. [2018-11-07 17:49:39,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 17:49:39,891 INFO L93 Difference]: Finished difference Result 15293 states and 22328 transitions. [2018-11-07 17:49:39,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-11-07 17:49:39,892 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 257 [2018-11-07 17:49:39,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 17:49:39,940 INFO L225 Difference]: With dead ends: 15293 [2018-11-07 17:49:39,940 INFO L226 Difference]: Without dead ends: 10623 [2018-11-07 17:49:39,960 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 278 GetRequests, 233 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=389, Invalid=1773, Unknown=0, NotChecked=0, Total=2162 [2018-11-07 17:49:39,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10623 states. [2018-11-07 17:49:40,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10623 to 10615. [2018-11-07 17:49:40,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10615 states. [2018-11-07 17:49:40,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10615 states to 10615 states and 13373 transitions. [2018-11-07 17:49:40,237 INFO L78 Accepts]: Start accepts. Automaton has 10615 states and 13373 transitions. Word has length 257 [2018-11-07 17:49:40,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 17:49:40,238 INFO L480 AbstractCegarLoop]: Abstraction has 10615 states and 13373 transitions. [2018-11-07 17:49:40,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-07 17:49:40,238 INFO L276 IsEmpty]: Start isEmpty. Operand 10615 states and 13373 transitions. [2018-11-07 17:49:40,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-11-07 17:49:40,247 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 17:49:40,247 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 17:49:40,247 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 17:49:40,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:49:40,248 INFO L82 PathProgramCache]: Analyzing trace with hash 266985524, now seen corresponding path program 1 times [2018-11-07 17:49:40,248 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 17:49:40,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:49:40,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 17:49:40,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 17:49:40,250 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 17:49:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 17:49:40,590 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 17:49:41,062 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 47 proven. 13 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-07 17:49:41,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 17:49:41,062 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 17:49:41,062 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 273 with the following transitions: [2018-11-07 17:49:41,063 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2007], [2009], [2012], [2020], [2028], [2036], [2044], [2052], [2060], [2068], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2464], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2664], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 17:49:41,068 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 17:49:41,069 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 17:49:41,237 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 17:49:41,408 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 17:49:41,408 INFO L272 AbstractInterpreter]: Visited 154 different actions 304 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 17:49:41,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 17:49:41,413 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 17:49:41,916 INFO L227 lantSequenceWeakener]: Weakened 46 states. On average, predicates are now at 76.85% of their original sizes. [2018-11-07 17:49:41,916 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 17:49:43,585 INFO L415 sIntCurrentIteration]: We unified 271 AI predicates to 271 [2018-11-07 17:49:43,586 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 17:49:43,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 17:49:43,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [6] total 24 [2018-11-07 17:49:43,587 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 17:49:43,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 17:49:43,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 17:49:43,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2018-11-07 17:49:43,589 INFO L87 Difference]: Start difference. First operand 10615 states and 13373 transitions. Second operand 20 states. Received shutdown request... [2018-11-07 17:50:27,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-07 17:50:27,118 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 17:50:27,123 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 17:50:27,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:50:27 BoogieIcfgContainer [2018-11-07 17:50:27,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 17:50:27,124 INFO L168 Benchmark]: Toolchain (without parser) took 216997.45 ms. Allocated memory was 1.5 GB in the beginning and 5.4 GB in the end (delta: 3.9 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-07 17:50:27,125 INFO L168 Benchmark]: CDTParser took 0.52 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 17:50:27,127 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2196.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-07 17:50:27,128 INFO L168 Benchmark]: Boogie Procedure Inliner took 466.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 65.0 MB. Max. memory is 7.1 GB. [2018-11-07 17:50:27,129 INFO L168 Benchmark]: Boogie Preprocessor took 288.54 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2018-11-07 17:50:27,130 INFO L168 Benchmark]: RCFGBuilder took 8636.65 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 659.6 MB). Peak memory consumption was 659.6 MB. Max. memory is 7.1 GB. [2018-11-07 17:50:27,131 INFO L168 Benchmark]: TraceAbstraction took 205403.34 ms. Allocated memory was 2.4 GB in the beginning and 5.4 GB in the end (delta: 3.0 GB). Free memory was 1.6 GB in the beginning and 3.5 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 17:50:27,136 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52 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 2196.59 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 466.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.1 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 65.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 288.54 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 24.5 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8636.65 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 659.6 MB). Peak memory consumption was 659.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205403.34 ms. Allocated memory was 2.4 GB in the beginning and 5.4 GB in the end (delta: 3.0 GB). Free memory was 1.6 GB in the beginning and 3.5 GB in the end (delta: -1.9 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 81). Cancelled while BasicCegarLoop was constructing difference of abstraction (10615states) and FLOYD_HOARE automaton (currently 20 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (12626 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 205.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 195.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3114 SDtfs, 18610 SDslu, 1327 SDs, 0 SdLazy, 32620 SolverSat, 4977 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 70.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 685 GetRequests, 545 SyntacticMatches, 44 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10615occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.7s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9971630756420242 AbsIntWeakeningRatio, 0.11867088607594936 AbsIntAvgWeakeningVarsNumRemoved, 15.00632911392405 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 917 NumberOfCodeBlocks, 917 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 912 ConstructedInterpolants, 0 QuantifiedInterpolants, 599201 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 310/410 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown