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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label03_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 01:08:35,588 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 01:08:35,590 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 01:08:35,605 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 01:08:35,606 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 01:08:35,608 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 01:08:35,609 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 01:08:35,611 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 01:08:35,613 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 01:08:35,614 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 01:08:35,615 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 01:08:35,615 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 01:08:35,616 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 01:08:35,619 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 01:08:35,621 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 01:08:35,621 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 01:08:35,623 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 01:08:35,624 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 01:08:35,627 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 01:08:35,631 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 01:08:35,632 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 01:08:35,635 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 01:08:35,641 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 01:08:35,651 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 01:08:35,651 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 01:08:35,654 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 01:08:35,655 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 01:08:35,656 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 01:08:35,683 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 01:08:35,683 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 01:08:35,684 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 01:08:35,685 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 01:08:35,685 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 01:08:35,685 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 01:08:35,685 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 01:08:35,686 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 01:08:35,686 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 01:08:35,686 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 01:08:35,686 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 01:08:35,686 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 01:08:35,688 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 01:08:35,688 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 01:08:35,688 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 01:08:35,688 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 01:08:35,688 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 01:08:35,689 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 01:08:35,689 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 01:08:35,689 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 01:08:35,689 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 01:08:35,689 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 01:08:35,690 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 01:08:35,691 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 01:08:35,691 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 01:08:35,692 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 01:08:35,692 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 01:08:35,692 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 01:08:35,692 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 01:08:35,692 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 01:08:35,693 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 01:08:35,693 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 01:08:35,693 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 01:08:35,693 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 01:08:35,765 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 01:08:35,785 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 01:08:35,790 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 01:08:35,792 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 01:08:35,792 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 01:08:35,793 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label03_true-unreach-call_false-termination.c [2018-11-07 01:08:35,862 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacdf0a25/4b8dea4932a4497791c0434d02ae4f4e/FLAG449c58568 [2018-11-07 01:08:36,464 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 01:08:36,468 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label03_true-unreach-call_false-termination.c [2018-11-07 01:08:36,480 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacdf0a25/4b8dea4932a4497791c0434d02ae4f4e/FLAG449c58568 [2018-11-07 01:08:36,495 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dacdf0a25/4b8dea4932a4497791c0434d02ae4f4e [2018-11-07 01:08:36,506 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 01:08:36,508 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 01:08:36,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 01:08:36,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 01:08:36,513 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 01:08:36,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:36" (1/1) ... [2018-11-07 01:08:36,517 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b5474c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:36, skipping insertion in model container [2018-11-07 01:08:36,517 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:08:36" (1/1) ... [2018-11-07 01:08:36,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 01:08:36,584 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 01:08:37,039 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:08:37,044 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 01:08:37,195 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 01:08:37,212 INFO L193 MainTranslator]: Completed translation [2018-11-07 01:08:37,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37 WrapperNode [2018-11-07 01:08:37,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 01:08:37,215 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 01:08:37,215 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 01:08:37,215 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 01:08:37,223 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2018-11-07 01:08:37,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2018-11-07 01:08:37,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 01:08:37,342 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 01:08:37,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 01:08:37,343 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 01:08:37,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2018-11-07 01:08:37,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2018-11-07 01:08:37,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2018-11-07 01:08:37,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2018-11-07 01:08:37,401 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2018-11-07 01:08:37,418 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2018-11-07 01:08:37,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (1/1) ... [2018-11-07 01:08:37,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 01:08:37,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 01:08:37,434 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 01:08:37,434 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 01:08:37,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (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 01:08:37,519 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 01:08:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 01:08:37,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 01:08:37,520 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 01:08:37,521 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 01:08:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 01:08:37,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 01:08:37,521 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 01:08:37,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 01:08:40,788 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 01:08:40,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:08:40 BoogieIcfgContainer [2018-11-07 01:08:40,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 01:08:40,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 01:08:40,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 01:08:40,799 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 01:08:40,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:08:36" (1/3) ... [2018-11-07 01:08:40,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734020a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:08:40, skipping insertion in model container [2018-11-07 01:08:40,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:08:37" (2/3) ... [2018-11-07 01:08:40,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@734020a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:08:40, skipping insertion in model container [2018-11-07 01:08:40,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:08:40" (3/3) ... [2018-11-07 01:08:40,806 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label03_true-unreach-call_false-termination.c [2018-11-07 01:08:40,819 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 01:08:40,830 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 01:08:40,849 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 01:08:40,900 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 01:08:40,900 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 01:08:40,901 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 01:08:40,901 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 01:08:40,901 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 01:08:40,903 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 01:08:40,903 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 01:08:40,903 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 01:08:40,951 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-11-07 01:08:40,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 01:08:40,969 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:08:40,970 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:08:40,973 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:08:40,978 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:08:40,978 INFO L82 PathProgramCache]: Analyzing trace with hash -304516904, now seen corresponding path program 1 times [2018-11-07 01:08:40,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:08:41,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:08:41,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:08:41,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:08:41,033 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:08:41,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:08:41,781 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 01:08:41,784 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:08:41,784 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 01:08:41,784 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:08:41,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 01:08:41,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 01:08:41,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 01:08:41,811 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 4 states. [2018-11-07 01:08:44,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:08:44,478 INFO L93 Difference]: Finished difference Result 788 states and 1373 transitions. [2018-11-07 01:08:44,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 01:08:44,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2018-11-07 01:08:44,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:08:44,501 INFO L225 Difference]: With dead ends: 788 [2018-11-07 01:08:44,501 INFO L226 Difference]: Without dead ends: 545 [2018-11-07 01:08:44,510 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 01:08:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2018-11-07 01:08:44,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 383. [2018-11-07 01:08:44,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2018-11-07 01:08:44,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 631 transitions. [2018-11-07 01:08:44,613 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 631 transitions. Word has length 136 [2018-11-07 01:08:44,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:08:44,615 INFO L480 AbstractCegarLoop]: Abstraction has 383 states and 631 transitions. [2018-11-07 01:08:44,615 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 01:08:44,615 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 631 transitions. [2018-11-07 01:08:44,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 01:08:44,626 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:08:44,627 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:08:44,628 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:08:44,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:08:44,628 INFO L82 PathProgramCache]: Analyzing trace with hash -787094811, now seen corresponding path program 1 times [2018-11-07 01:08:44,629 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:08:44,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:08:44,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:08:44,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:08:44,630 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:08:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:08:45,014 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:08:45,015 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:08:45,015 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 01:08:45,015 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:08:45,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 01:08:45,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 01:08:45,018 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:08:45,018 INFO L87 Difference]: Start difference. First operand 383 states and 631 transitions. Second operand 5 states. [2018-11-07 01:08:46,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:08:46,374 INFO L93 Difference]: Finished difference Result 905 states and 1543 transitions. [2018-11-07 01:08:46,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 01:08:46,377 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-11-07 01:08:46,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:08:46,381 INFO L225 Difference]: With dead ends: 905 [2018-11-07 01:08:46,382 INFO L226 Difference]: Without dead ends: 382 [2018-11-07 01:08:46,385 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:08:46,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2018-11-07 01:08:46,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 382. [2018-11-07 01:08:46,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 382 states. [2018-11-07 01:08:46,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 625 transitions. [2018-11-07 01:08:46,407 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 625 transitions. Word has length 145 [2018-11-07 01:08:46,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:08:46,407 INFO L480 AbstractCegarLoop]: Abstraction has 382 states and 625 transitions. [2018-11-07 01:08:46,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 01:08:46,408 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 625 transitions. [2018-11-07 01:08:46,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-07 01:08:46,411 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:08:46,411 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:08:46,412 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:08:46,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:08:46,412 INFO L82 PathProgramCache]: Analyzing trace with hash 259218255, now seen corresponding path program 1 times [2018-11-07 01:08:46,412 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:08:46,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:08:46,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:08:46,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:08:46,414 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:08:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:08:46,666 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 01:08:46,773 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:08:46,773 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:08:46,773 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 01:08:46,774 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:08:46,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 01:08:46,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 01:08:46,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 01:08:46,775 INFO L87 Difference]: Start difference. First operand 382 states and 625 transitions. Second operand 6 states. [2018-11-07 01:08:49,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:08:49,543 INFO L93 Difference]: Finished difference Result 1198 states and 2052 transitions. [2018-11-07 01:08:49,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 01:08:49,546 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2018-11-07 01:08:49,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:08:49,554 INFO L225 Difference]: With dead ends: 1198 [2018-11-07 01:08:49,554 INFO L226 Difference]: Without dead ends: 822 [2018-11-07 01:08:49,560 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 01:08:49,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2018-11-07 01:08:49,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 810. [2018-11-07 01:08:49,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 810 states. [2018-11-07 01:08:49,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1267 transitions. [2018-11-07 01:08:49,608 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1267 transitions. Word has length 157 [2018-11-07 01:08:49,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:08:49,608 INFO L480 AbstractCegarLoop]: Abstraction has 810 states and 1267 transitions. [2018-11-07 01:08:49,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 01:08:49,608 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1267 transitions. [2018-11-07 01:08:49,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-07 01:08:49,613 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:08:49,613 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:08:49,613 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:08:49,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:08:49,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1241453342, now seen corresponding path program 1 times [2018-11-07 01:08:49,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:08:49,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:08:49,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:08:49,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:08:49,615 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:08:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:08:50,110 WARN L179 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-07 01:08:50,323 WARN L179 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-07 01:08:50,381 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:08:50,381 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:08:50,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 01:08:50,382 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:08:50,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 01:08:50,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 01:08:50,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:08:50,383 INFO L87 Difference]: Start difference. First operand 810 states and 1267 transitions. Second operand 5 states. [2018-11-07 01:08:52,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:08:52,291 INFO L93 Difference]: Finished difference Result 1759 states and 2791 transitions. [2018-11-07 01:08:52,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 01:08:52,294 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2018-11-07 01:08:52,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:08:52,304 INFO L225 Difference]: With dead ends: 1759 [2018-11-07 01:08:52,304 INFO L226 Difference]: Without dead ends: 807 [2018-11-07 01:08:52,308 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:08:52,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2018-11-07 01:08:52,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2018-11-07 01:08:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 807 states. [2018-11-07 01:08:52,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1249 transitions. [2018-11-07 01:08:52,347 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1249 transitions. Word has length 161 [2018-11-07 01:08:52,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:08:52,347 INFO L480 AbstractCegarLoop]: Abstraction has 807 states and 1249 transitions. [2018-11-07 01:08:52,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 01:08:52,348 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1249 transitions. [2018-11-07 01:08:52,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2018-11-07 01:08:52,352 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:08:52,352 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:08:52,352 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:08:52,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:08:52,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1229392870, now seen corresponding path program 1 times [2018-11-07 01:08:52,353 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:08:52,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:08:52,354 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:08:52,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:08:52,354 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:08:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:08:52,791 WARN L179 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-07 01:08:53,040 WARN L179 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 01:08:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:08:53,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 01:08:53,124 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 01:08:53,124 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:08:53,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 01:08:53,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 01:08:53,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:08:53,130 INFO L87 Difference]: Start difference. First operand 807 states and 1249 transitions. Second operand 5 states. [2018-11-07 01:08:54,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 01:08:54,275 INFO L93 Difference]: Finished difference Result 1749 states and 2745 transitions. [2018-11-07 01:08:54,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 01:08:54,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2018-11-07 01:08:54,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 01:08:54,283 INFO L225 Difference]: With dead ends: 1749 [2018-11-07 01:08:54,284 INFO L226 Difference]: Without dead ends: 800 [2018-11-07 01:08:54,288 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-07 01:08:54,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2018-11-07 01:08:54,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 800. [2018-11-07 01:08:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 800 states. [2018-11-07 01:08:54,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1221 transitions. [2018-11-07 01:08:54,315 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1221 transitions. Word has length 163 [2018-11-07 01:08:54,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 01:08:54,315 INFO L480 AbstractCegarLoop]: Abstraction has 800 states and 1221 transitions. [2018-11-07 01:08:54,315 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 01:08:54,316 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1221 transitions. [2018-11-07 01:08:54,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-11-07 01:08:54,320 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 01:08:54,320 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 01:08:54,321 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 01:08:54,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:08:54,321 INFO L82 PathProgramCache]: Analyzing trace with hash 397717782, now seen corresponding path program 1 times [2018-11-07 01:08:54,321 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 01:08:54,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:08:54,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 01:08:54,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 01:08:54,323 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 01:08:54,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 01:08:54,773 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 01:08:54,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 01:08:54,774 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 01:08:54,775 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 172 with the following transitions: [2018-11-07 01:08:54,779 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [25], [26], [30], [34], [38], [42], [45], [50], [52], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [667], [675], [683], [691], [699], [707], [715], [723], [731], [739], [747], [755], [759], [761], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-11-07 01:08:54,887 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 01:08:54,887 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 01:09:30,782 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 01:09:30,784 INFO L272 AbstractInterpreter]: Visited 140 different actions 274 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 38 variables. [2018-11-07 01:09:30,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:09:30,795 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 01:09:37,398 INFO L227 lantSequenceWeakener]: Weakened 52 states. On average, predicates are now at 83.39% of their original sizes. [2018-11-07 01:09:37,398 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 01:12:35,944 INFO L415 sIntCurrentIteration]: We unified 170 AI predicates to 170 [2018-11-07 01:12:35,945 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 01:12:35,946 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 01:12:35,946 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-07 01:12:35,946 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:12:35,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-07 01:12:35,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-07 01:12:35,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2018-11-07 01:12:35,948 INFO L87 Difference]: Start difference. First operand 800 states and 1221 transitions. Second operand 19 states. Received shutdown request... [2018-11-07 01:13:00,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-07 01:13:00,175 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 01:13:00,179 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 01:13:00,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:13:00 BoogieIcfgContainer [2018-11-07 01:13:00,180 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 01:13:00,181 INFO L168 Benchmark]: Toolchain (without parser) took 263673.99 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.6 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.4 GB). Peak memory consumption was 139.6 MB. Max. memory is 7.1 GB. [2018-11-07 01:13:00,185 INFO L168 Benchmark]: CDTParser took 0.20 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 01:13:00,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-11-07 01:13:00,186 INFO L168 Benchmark]: Boogie Procedure Inliner took 127.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -822.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2018-11-07 01:13:00,188 INFO L168 Benchmark]: Boogie Preprocessor took 91.07 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 01:13:00,188 INFO L168 Benchmark]: RCFGBuilder took 3355.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.2 MB). Peak memory consumption was 104.2 MB. Max. memory is 7.1 GB. [2018-11-07 01:13:00,189 INFO L168 Benchmark]: TraceAbstraction took 259386.94 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 821.0 MB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -743.5 MB). Peak memory consumption was 77.5 MB. Max. memory is 7.1 GB. [2018-11-07 01:13:00,200 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 704.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 127.25 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 748.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -822.5 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 91.07 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3355.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 104.2 MB). Peak memory consumption was 104.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 259386.94 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 821.0 MB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -743.5 MB). Peak memory consumption was 77.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 559]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 559). Cancelled while BasicCegarLoop was constructing difference of abstraction (800states) and FLOYD_HOARE automaton (currently 13 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 25 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 259.2s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 34.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 634 SDtfs, 2881 SDslu, 538 SDs, 0 SdLazy, 3971 SolverSat, 790 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 16.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 216 GetRequests, 125 SyntacticMatches, 49 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 182.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=810occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 36.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9947117396033809 AbsIntWeakeningRatio, 0.2 AbsIntAvgWeakeningVarsNumRemoved, 465.9117647058824 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 174 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 933 NumberOfCodeBlocks, 933 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 927 ConstructedInterpolants, 0 QuantifiedInterpolants, 1049283 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 107/109 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown