java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label12_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 23:44:37,722 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 23:44:37,725 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 23:44:37,743 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 23:44:37,744 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 23:44:37,745 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 23:44:37,747 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 23:44:37,750 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 23:44:37,753 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 23:44:37,754 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 23:44:37,762 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 23:44:37,762 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 23:44:37,764 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 23:44:37,765 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 23:44:37,768 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 23:44:37,770 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 23:44:37,771 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 23:44:37,774 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 23:44:37,779 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 23:44:37,780 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 23:44:37,781 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 23:44:37,782 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 23:44:37,784 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 23:44:37,785 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 23:44:37,785 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 23:44:37,786 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 23:44:37,787 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 23:44:37,787 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 23:44:37,788 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 23:44:37,791 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 23:44:37,791 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 23:44:37,792 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-26 23:44:37,792 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-26 23:44:37,793 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-26 23:44:37,793 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-26 23:44:37,794 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-26 23:44:37,795 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-26 23:44:37,809 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 23:44:37,809 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 23:44:37,810 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 23:44:37,810 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-26 23:44:37,811 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-26 23:44:37,811 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-26 23:44:37,811 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-26 23:44:37,811 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-26 23:44:37,811 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-26 23:44:37,811 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-26 23:44:37,812 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-26 23:44:37,812 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-26 23:44:37,812 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 23:44:37,813 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 23:44:37,813 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 23:44:37,813 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 23:44:37,813 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 23:44:37,813 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 23:44:37,814 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 23:44:37,814 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 23:44:37,814 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 23:44:37,814 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 23:44:37,814 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 23:44:37,815 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 23:44:37,815 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 23:44:37,815 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 23:44:37,815 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 23:44:37,816 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 23:44:37,816 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-26 23:44:37,816 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 23:44:37,816 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 23:44:37,816 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 23:44:37,817 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 23:44:37,817 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-26 23:44:37,865 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 23:44:37,878 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 23:44:37,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 23:44:37,883 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 23:44:37,884 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 23:44:37,884 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label12_false-unreach-call.c [2018-10-26 23:44:37,946 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/618381fb5/839857e3439b4043b9ebe97b2c876b94/FLAG566a29c6d [2018-10-26 23:44:38,758 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 23:44:38,759 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label12_false-unreach-call.c [2018-10-26 23:44:38,805 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/618381fb5/839857e3439b4043b9ebe97b2c876b94/FLAG566a29c6d [2018-10-26 23:44:38,821 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/618381fb5/839857e3439b4043b9ebe97b2c876b94 [2018-10-26 23:44:38,834 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 23:44:38,835 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 23:44:38,837 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 23:44:38,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 23:44:38,844 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 23:44:38,845 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:44:38" (1/1) ... [2018-10-26 23:44:38,848 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41d3a67d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:38, skipping insertion in model container [2018-10-26 23:44:38,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:44:38" (1/1) ... [2018-10-26 23:44:38,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 23:44:39,057 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 23:44:40,535 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:44:40,544 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 23:44:41,203 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 23:44:41,239 INFO L193 MainTranslator]: Completed translation [2018-10-26 23:44:41,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:41 WrapperNode [2018-10-26 23:44:41,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 23:44:41,241 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 23:44:41,242 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 23:44:41,242 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 23:44:41,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:41" (1/1) ... [2018-10-26 23:44:41,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:41" (1/1) ... [2018-10-26 23:44:41,897 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 23:44:41,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 23:44:41,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 23:44:41,898 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 23:44:41,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:41" (1/1) ... [2018-10-26 23:44:41,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:41" (1/1) ... [2018-10-26 23:44:41,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:41" (1/1) ... [2018-10-26 23:44:41,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:41" (1/1) ... [2018-10-26 23:44:42,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:41" (1/1) ... [2018-10-26 23:44:42,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:41" (1/1) ... [2018-10-26 23:44:42,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:41" (1/1) ... [2018-10-26 23:44:42,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 23:44:42,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 23:44:42,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 23:44:42,228 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 23:44:42,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-26 23:44:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-26 23:44:42,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-26 23:44:42,286 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-26 23:44:42,286 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-26 23:44:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-26 23:44:42,287 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-26 23:44:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-26 23:44:42,287 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-26 23:44:42,287 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-26 23:44:42,288 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-26 23:44:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 23:44:42,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 23:44:42,289 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-26 23:44:42,290 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-26 23:44:53,786 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 23:44:53,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:44:53 BoogieIcfgContainer [2018-10-26 23:44:53,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 23:44:53,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 23:44:53,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 23:44:53,791 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 23:44:53,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:44:38" (1/3) ... [2018-10-26 23:44:53,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1b373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:44:53, skipping insertion in model container [2018-10-26 23:44:53,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:44:41" (2/3) ... [2018-10-26 23:44:53,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b1b373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:44:53, skipping insertion in model container [2018-10-26 23:44:53,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:44:53" (3/3) ... [2018-10-26 23:44:53,795 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label12_false-unreach-call.c [2018-10-26 23:44:53,806 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 23:44:53,815 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 23:44:53,833 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 23:44:53,880 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 23:44:53,880 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 23:44:53,880 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 23:44:53,880 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 23:44:53,881 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 23:44:53,881 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 23:44:53,881 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 23:44:53,881 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 23:44:53,925 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-26 23:44:53,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-26 23:44:53,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:44:53,933 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:44:53,936 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:44:53,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:44:53,943 INFO L82 PathProgramCache]: Analyzing trace with hash 190790252, now seen corresponding path program 1 times [2018-10-26 23:44:53,946 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:44:53,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:44:53,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:44:53,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:44:53,998 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:44:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:44:54,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:44:54,360 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:44:54,360 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:44:54,361 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:44:54,368 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:44:54,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:44:54,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:44:54,389 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-10-26 23:45:07,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:45:07,218 INFO L93 Difference]: Finished difference Result 3968 states and 7392 transitions. [2018-10-26 23:45:07,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:45:07,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-10-26 23:45:07,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:45:07,266 INFO L225 Difference]: With dead ends: 3968 [2018-10-26 23:45:07,267 INFO L226 Difference]: Without dead ends: 2842 [2018-10-26 23:45:07,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:45:07,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2842 states. [2018-10-26 23:45:07,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2842 to 1981. [2018-10-26 23:45:07,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1981 states. [2018-10-26 23:45:07,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 3456 transitions. [2018-10-26 23:45:07,456 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 3456 transitions. Word has length 16 [2018-10-26 23:45:07,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:45:07,457 INFO L481 AbstractCegarLoop]: Abstraction has 1981 states and 3456 transitions. [2018-10-26 23:45:07,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:45:07,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 3456 transitions. [2018-10-26 23:45:07,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-10-26 23:45:07,461 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:45:07,462 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:45:07,462 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:45:07,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:45:07,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1385372312, now seen corresponding path program 1 times [2018-10-26 23:45:07,463 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:45:07,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:07,464 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:45:07,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:07,464 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:45:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:45:07,803 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:45:07,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:45:07,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:45:07,804 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:45:07,806 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:45:07,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:45:07,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:45:07,807 INFO L87 Difference]: Start difference. First operand 1981 states and 3456 transitions. Second operand 5 states. [2018-10-26 23:45:23,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:45:23,188 INFO L93 Difference]: Finished difference Result 5673 states and 10081 transitions. [2018-10-26 23:45:23,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-26 23:45:23,191 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2018-10-26 23:45:23,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:45:23,217 INFO L225 Difference]: With dead ends: 5673 [2018-10-26 23:45:23,218 INFO L226 Difference]: Without dead ends: 3698 [2018-10-26 23:45:23,226 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:45:23,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3698 states. [2018-10-26 23:45:23,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3698 to 3687. [2018-10-26 23:45:23,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3687 states. [2018-10-26 23:45:23,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3687 states to 3687 states and 5870 transitions. [2018-10-26 23:45:23,332 INFO L78 Accepts]: Start accepts. Automaton has 3687 states and 5870 transitions. Word has length 86 [2018-10-26 23:45:23,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:45:23,333 INFO L481 AbstractCegarLoop]: Abstraction has 3687 states and 5870 transitions. [2018-10-26 23:45:23,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:45:23,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3687 states and 5870 transitions. [2018-10-26 23:45:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-10-26 23:45:23,337 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:45:23,337 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:45:23,337 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:45:23,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:45:23,338 INFO L82 PathProgramCache]: Analyzing trace with hash 440259844, now seen corresponding path program 1 times [2018-10-26 23:45:23,338 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:45:23,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:23,339 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:45:23,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:23,339 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:45:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:45:23,573 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:45:23,574 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:45:23,574 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 23:45:23,574 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:45:23,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 23:45:23,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 23:45:23,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-26 23:45:23,576 INFO L87 Difference]: Start difference. First operand 3687 states and 5870 transitions. Second operand 5 states. [2018-10-26 23:45:39,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:45:39,518 INFO L93 Difference]: Finished difference Result 10963 states and 17865 transitions. [2018-10-26 23:45:39,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-26 23:45:39,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2018-10-26 23:45:39,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:45:39,567 INFO L225 Difference]: With dead ends: 10963 [2018-10-26 23:45:39,568 INFO L226 Difference]: Without dead ends: 7282 [2018-10-26 23:45:39,583 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-26 23:45:39,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7282 states. [2018-10-26 23:45:39,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7282 to 7175. [2018-10-26 23:45:39,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7175 states. [2018-10-26 23:45:39,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7175 states to 7175 states and 10520 transitions. [2018-10-26 23:45:39,829 INFO L78 Accepts]: Start accepts. Automaton has 7175 states and 10520 transitions. Word has length 88 [2018-10-26 23:45:39,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:45:39,830 INFO L481 AbstractCegarLoop]: Abstraction has 7175 states and 10520 transitions. [2018-10-26 23:45:39,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 23:45:39,830 INFO L276 IsEmpty]: Start isEmpty. Operand 7175 states and 10520 transitions. [2018-10-26 23:45:39,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-26 23:45:39,839 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:45:39,840 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-26 23:45:39,840 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:45:39,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:45:39,841 INFO L82 PathProgramCache]: Analyzing trace with hash -567644532, now seen corresponding path program 1 times [2018-10-26 23:45:39,841 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:45:39,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:39,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:45:39,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:39,843 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:45:39,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:45:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:45:40,088 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 23:45:40,089 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 23:45:40,089 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:45:40,089 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 23:45:40,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 23:45:40,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:45:40,090 INFO L87 Difference]: Start difference. First operand 7175 states and 10520 transitions. Second operand 4 states. [2018-10-26 23:45:53,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 23:45:53,240 INFO L93 Difference]: Finished difference Result 27677 states and 43224 transitions. [2018-10-26 23:45:53,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 23:45:53,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 132 [2018-10-26 23:45:53,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 23:45:53,343 INFO L225 Difference]: With dead ends: 27677 [2018-10-26 23:45:53,343 INFO L226 Difference]: Without dead ends: 20508 [2018-10-26 23:45:53,399 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 23:45:53,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20508 states. [2018-10-26 23:45:53,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20508 to 20471. [2018-10-26 23:45:53,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20471 states. [2018-10-26 23:45:53,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20471 states to 20471 states and 29107 transitions. [2018-10-26 23:45:53,911 INFO L78 Accepts]: Start accepts. Automaton has 20471 states and 29107 transitions. Word has length 132 [2018-10-26 23:45:53,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 23:45:53,912 INFO L481 AbstractCegarLoop]: Abstraction has 20471 states and 29107 transitions. [2018-10-26 23:45:53,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 23:45:53,912 INFO L276 IsEmpty]: Start isEmpty. Operand 20471 states and 29107 transitions. [2018-10-26 23:45:53,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2018-10-26 23:45:53,922 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 23:45:53,923 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 23:45:53,923 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 23:45:53,923 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:45:53,924 INFO L82 PathProgramCache]: Analyzing trace with hash -2019208682, now seen corresponding path program 1 times [2018-10-26 23:45:53,924 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-26 23:45:53,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:53,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 23:45:53,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 23:45:53,925 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-26 23:45:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 23:45:54,331 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 126 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 23:45:54,332 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 23:45:54,332 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-26 23:45:54,333 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 248 with the following transitions: [2018-10-26 23:45:54,336 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2655], [2657], [2660], [2668], [2676], [2684], [2692], [2700], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3308], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-26 23:45:54,433 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-26 23:45:54,433 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-26 23:46:01,291 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-26 23:46:01,293 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-26 23:46:01,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 23:46:01,320 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-26 23:46:05,929 INFO L227 lantSequenceWeakener]: Weakened 224 states. On average, predicates are now at 71.02% of their original sizes. [2018-10-26 23:46:05,929 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-26 23:46:07,530 INFO L415 sIntCurrentIteration]: We unified 246 AI predicates to 246 [2018-10-26 23:46:07,531 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-26 23:46:07,531 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 23:46:07,531 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-26 23:46:07,532 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-26 23:46:07,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-26 23:46:07,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-26 23:46:07,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-26 23:46:07,533 INFO L87 Difference]: Start difference. First operand 20471 states and 29107 transitions. Second operand 11 states. [2018-10-26 23:47:03,782 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-26 23:48:19,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-26 23:48:19,206 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 23:48:19,211 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 23:48:19,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 11:48:19 BoogieIcfgContainer [2018-10-26 23:48:19,212 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 23:48:19,212 INFO L168 Benchmark]: Toolchain (without parser) took 220378.22 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -192.4 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-26 23:48:19,215 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-10-26 23:48:19,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2404.01 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-26 23:48:19,216 INFO L168 Benchmark]: Boogie Procedure Inliner took 655.71 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 838.3 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 83.7 MB. Max. memory is 7.1 GB. [2018-10-26 23:48:19,217 INFO L168 Benchmark]: Boogie Preprocessor took 329.88 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 7.1 GB. [2018-10-26 23:48:19,218 INFO L168 Benchmark]: RCFGBuilder took 11559.33 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 184.0 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 2.1 MB). Peak memory consumption was 684.2 MB. Max. memory is 7.1 GB. [2018-10-26 23:48:19,219 INFO L168 Benchmark]: TraceAbstraction took 205424.03 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 620.8 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-26 23:48:19,231 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 2404.01 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 655.71 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 838.3 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 83.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 329.88 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 38.5 MB). Peak memory consumption was 38.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11559.33 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 184.0 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 2.1 MB). Peak memory consumption was 684.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205424.03 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 620.8 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 39]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 39). Cancelled while BasicCegarLoop was constructing difference of abstraction (20471states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (5111 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 205.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 189.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2151 SDtfs, 12435 SDslu, 1969 SDs, 0 SdLazy, 19788 SolverSat, 5582 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 140.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 279 GetRequests, 249 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20471occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9962226391494684 AbsIntWeakeningRatio, 0.12195121951219512 AbsIntAvgWeakeningVarsNumRemoved, 42.199186991869915 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1016 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 569 NumberOfCodeBlocks, 569 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 564 ConstructedInterpolants, 0 QuantifiedInterpolants, 304295 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 153/155 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown