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/Problem17_label41_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:11:28,709 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:11:28,714 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:11:28,728 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:11:28,730 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:11:28,731 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:11:28,733 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:11:28,735 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:11:28,737 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:11:28,737 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:11:28,738 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:11:28,739 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:11:28,739 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:11:28,740 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:11:28,741 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:11:28,742 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:11:28,745 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:11:28,750 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:11:28,752 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:11:28,755 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:11:28,757 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:11:28,761 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:11:28,765 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:11:28,774 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 22:11:28,776 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 22:11:28,776 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 22:11:28,777 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 22:11:28,778 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 [2018-10-24 22:11:28,799 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:11:28,799 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:11:28,800 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:11:28,800 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:11:28,800 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:11:28,801 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:11:28,801 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:11:28,801 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:11:28,801 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:11:28,801 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:11:28,802 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:11:28,802 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:11:28,803 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:11:28,803 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:11:28,803 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:11:28,803 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:11:28,803 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:11:28,803 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:11:28,804 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:11:28,804 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:11:28,804 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:11:28,804 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:11:28,804 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:11:28,805 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:11:28,806 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:11:28,807 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:11:28,807 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:11:28,807 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:11:28,807 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:11:28,807 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:11:28,807 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:11:28,808 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:11:28,808 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:11:28,808 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:11:28,870 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:11:28,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:11:28,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:11:28,888 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:11:28,889 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:11:28,890 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label41_true-unreach-call.c [2018-10-24 22:11:28,953 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a8d8c6c69/e438e02ba77042a9b1f79a834fcdb050/FLAG23e4ecf04 [2018-10-24 22:11:29,698 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:11:29,700 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label41_true-unreach-call.c [2018-10-24 22:11:29,725 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a8d8c6c69/e438e02ba77042a9b1f79a834fcdb050/FLAG23e4ecf04 [2018-10-24 22:11:29,745 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/a8d8c6c69/e438e02ba77042a9b1f79a834fcdb050 [2018-10-24 22:11:29,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:11:29,760 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:11:29,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:11:29,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:11:29,766 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:11:29,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:11:29" (1/1) ... [2018-10-24 22:11:29,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b5e4c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:11:29, skipping insertion in model container [2018-10-24 22:11:29,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:11:29" (1/1) ... [2018-10-24 22:11:29,782 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:11:29,911 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:11:30,896 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:11:30,901 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:11:31,274 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:11:31,300 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:11:31,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:11:31 WrapperNode [2018-10-24 22:11:31,301 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:11:31,303 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:11:31,303 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:11:31,303 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:11:31,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:11:31" (1/1) ... [2018-10-24 22:11:31,374 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:11:31" (1/1) ... [2018-10-24 22:11:31,783 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:11:31,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:11:31,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:11:31,784 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:11:31,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:11:31" (1/1) ... [2018-10-24 22:11:31,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:11:31" (1/1) ... [2018-10-24 22:11:31,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:11:31" (1/1) ... [2018-10-24 22:11:31,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:11:31" (1/1) ... [2018-10-24 22:11:31,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:11:31" (1/1) ... [2018-10-24 22:11:31,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:11:31" (1/1) ... [2018-10-24 22:11:32,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:11:31" (1/1) ... [2018-10-24 22:11:32,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:11:32,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:11:32,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:11:32,131 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:11:32,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:11:31" (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 [2018-10-24 22:11:32,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:11:32,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:11:32,208 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:11:32,208 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:11:32,208 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:11:32,208 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:11:32,208 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:11:32,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:11:32,209 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:11:32,209 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:11:44,313 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:11:44,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:11:44 BoogieIcfgContainer [2018-10-24 22:11:44,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:11:44,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:11:44,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:11:44,319 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:11:44,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:11:29" (1/3) ... [2018-10-24 22:11:44,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76be6feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:11:44, skipping insertion in model container [2018-10-24 22:11:44,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:11:31" (2/3) ... [2018-10-24 22:11:44,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76be6feb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:11:44, skipping insertion in model container [2018-10-24 22:11:44,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:11:44" (3/3) ... [2018-10-24 22:11:44,323 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label41_true-unreach-call.c [2018-10-24 22:11:44,333 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:11:44,342 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:11:44,360 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:11:44,406 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:11:44,407 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:11:44,407 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:11:44,407 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:11:44,407 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:11:44,407 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:11:44,407 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:11:44,408 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:11:44,450 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 22:11:44,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-10-24 22:11:44,458 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:11:44,459 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] [2018-10-24 22:11:44,462 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:11:44,468 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:11:44,468 INFO L82 PathProgramCache]: Analyzing trace with hash -131983554, now seen corresponding path program 1 times [2018-10-24 22:11:44,470 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:11:44,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:11:44,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:11:44,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:11:44,523 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:11:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:11:45,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:11:45,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:11:45,042 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:11:45,042 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:11:45,049 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:11:45,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:11:45,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:11:45,069 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 22:11:54,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:11:54,701 INFO L93 Difference]: Finished difference Result 2166 states and 4013 transitions. [2018-10-24 22:11:54,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:11:54,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2018-10-24 22:11:54,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:11:54,736 INFO L225 Difference]: With dead ends: 2166 [2018-10-24 22:11:54,736 INFO L226 Difference]: Without dead ends: 1556 [2018-10-24 22:11:54,748 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 [2018-10-24 22:11:54,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1556 states. [2018-10-24 22:11:54,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1556 to 1068. [2018-10-24 22:11:54,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-24 22:11:54,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1850 transitions. [2018-10-24 22:11:54,881 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1850 transitions. Word has length 41 [2018-10-24 22:11:54,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:11:54,882 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1850 transitions. [2018-10-24 22:11:54,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:11:54,882 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1850 transitions. [2018-10-24 22:11:54,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2018-10-24 22:11:54,889 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:11:54,889 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, 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] [2018-10-24 22:11:54,890 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:11:54,890 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:11:54,890 INFO L82 PathProgramCache]: Analyzing trace with hash 183924887, now seen corresponding path program 1 times [2018-10-24 22:11:54,890 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:11:54,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:11:54,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:11:54,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:11:54,892 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:11:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:11:55,251 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:11:55,251 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:11:55,251 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:11:55,252 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:11:55,254 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:11:55,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:11:55,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:11:55,254 INFO L87 Difference]: Start difference. First operand 1068 states and 1850 transitions. Second operand 6 states. [2018-10-24 22:12:04,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:12:04,616 INFO L93 Difference]: Finished difference Result 3059 states and 5419 transitions. [2018-10-24 22:12:04,629 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:12:04,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 117 [2018-10-24 22:12:04,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:12:04,646 INFO L225 Difference]: With dead ends: 3059 [2018-10-24 22:12:04,646 INFO L226 Difference]: Without dead ends: 1997 [2018-10-24 22:12:04,652 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:12:04,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-10-24 22:12:04,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1975. [2018-10-24 22:12:04,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1975 states. [2018-10-24 22:12:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 3181 transitions. [2018-10-24 22:12:04,732 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 3181 transitions. Word has length 117 [2018-10-24 22:12:04,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:12:04,733 INFO L481 AbstractCegarLoop]: Abstraction has 1975 states and 3181 transitions. [2018-10-24 22:12:04,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:12:04,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 3181 transitions. [2018-10-24 22:12:04,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-24 22:12:04,737 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:12:04,738 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, 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] [2018-10-24 22:12:04,738 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:12:04,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:12:04,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1074284513, now seen corresponding path program 1 times [2018-10-24 22:12:04,739 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:12:04,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:04,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:12:04,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:04,740 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:12:04,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:12:04,995 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:12:04,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:12:04,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 22:12:04,996 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:12:04,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 22:12:04,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 22:12:04,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 22:12:04,997 INFO L87 Difference]: Start difference. First operand 1975 states and 3181 transitions. Second operand 6 states. [2018-10-24 22:12:09,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:12:09,947 INFO L93 Difference]: Finished difference Result 4880 states and 7834 transitions. [2018-10-24 22:12:09,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:12:09,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-10-24 22:12:09,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:12:09,966 INFO L225 Difference]: With dead ends: 4880 [2018-10-24 22:12:09,966 INFO L226 Difference]: Without dead ends: 2911 [2018-10-24 22:12:09,975 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 22:12:09,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-10-24 22:12:10,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2880. [2018-10-24 22:12:10,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-24 22:12:10,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3936 transitions. [2018-10-24 22:12:10,058 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3936 transitions. Word has length 121 [2018-10-24 22:12:10,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:12:10,059 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3936 transitions. [2018-10-24 22:12:10,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 22:12:10,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3936 transitions. [2018-10-24 22:12:10,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-10-24 22:12:10,062 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:12:10,062 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, 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] [2018-10-24 22:12:10,062 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:12:10,062 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:12:10,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1495659742, now seen corresponding path program 1 times [2018-10-24 22:12:10,063 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:12:10,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:10,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:12:10,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:10,065 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:12:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:12:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:12:10,223 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:12:10,223 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:12:10,223 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:12:10,224 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:12:10,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:12:10,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:12:10,225 INFO L87 Difference]: Start difference. First operand 2880 states and 3936 transitions. Second operand 4 states. [2018-10-24 22:12:15,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:12:15,004 INFO L93 Difference]: Finished difference Result 5754 states and 7882 transitions. [2018-10-24 22:12:15,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:12:15,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2018-10-24 22:12:15,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:12:15,019 INFO L225 Difference]: With dead ends: 5754 [2018-10-24 22:12:15,019 INFO L226 Difference]: Without dead ends: 2880 [2018-10-24 22:12:15,031 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:12:15,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2018-10-24 22:12:15,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2880. [2018-10-24 22:12:15,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-10-24 22:12:15,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3720 transitions. [2018-10-24 22:12:15,095 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3720 transitions. Word has length 151 [2018-10-24 22:12:15,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:12:15,095 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 3720 transitions. [2018-10-24 22:12:15,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:12:15,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3720 transitions. [2018-10-24 22:12:15,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2018-10-24 22:12:15,099 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:12:15,099 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:12:15,100 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:12:15,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:12:15,100 INFO L82 PathProgramCache]: Analyzing trace with hash 204309128, now seen corresponding path program 1 times [2018-10-24 22:12:15,100 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:12:15,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:15,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:12:15,101 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:15,102 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:12:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:12:15,358 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 22:12:15,359 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:12:15,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 22:12:15,359 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:12:15,360 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 22:12:15,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 22:12:15,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:12:15,361 INFO L87 Difference]: Start difference. First operand 2880 states and 3720 transitions. Second operand 3 states. [2018-10-24 22:12:20,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:12:20,423 INFO L93 Difference]: Finished difference Result 8399 states and 11033 transitions. [2018-10-24 22:12:20,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 22:12:20,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2018-10-24 22:12:20,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:12:20,448 INFO L225 Difference]: With dead ends: 8399 [2018-10-24 22:12:20,449 INFO L226 Difference]: Without dead ends: 5525 [2018-10-24 22:12:20,460 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 22:12:20,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5525 states. [2018-10-24 22:12:20,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5525 to 5525. [2018-10-24 22:12:20,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5525 states. [2018-10-24 22:12:20,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5525 states to 5525 states and 6667 transitions. [2018-10-24 22:12:20,582 INFO L78 Accepts]: Start accepts. Automaton has 5525 states and 6667 transitions. Word has length 205 [2018-10-24 22:12:20,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:12:20,583 INFO L481 AbstractCegarLoop]: Abstraction has 5525 states and 6667 transitions. [2018-10-24 22:12:20,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 22:12:20,584 INFO L276 IsEmpty]: Start isEmpty. Operand 5525 states and 6667 transitions. [2018-10-24 22:12:20,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2018-10-24 22:12:20,589 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:12:20,589 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:12:20,590 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:12:20,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:12:20,590 INFO L82 PathProgramCache]: Analyzing trace with hash -648899639, now seen corresponding path program 1 times [2018-10-24 22:12:20,590 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:12:20,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:20,591 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:12:20,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:12:20,592 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:12:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:12:21,177 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-10-24 22:12:21,389 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 68 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 22:12:21,390 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:12:21,390 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:12:21,391 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 229 with the following transitions: [2018-10-24 22:12:21,393 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [938], [940], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1231], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 22:12:21,473 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:12:21,474 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:12:24,215 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:12:24,658 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:12:24,660 INFO L272 AbstractInterpreter]: Visited 115 different actions 115 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 22:12:24,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:12:24,672 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:12:26,999 INFO L232 lantSequenceWeakener]: Weakened 220 states. On average, predicates are now at 75.47% of their original sizes. [2018-10-24 22:12:26,999 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:12:27,451 INFO L413 sIntCurrentIteration]: We have 227 unified AI predicates [2018-10-24 22:12:27,452 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:12:27,453 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:12:27,453 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-10-24 22:12:27,453 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:12:27,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 22:12:27,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 22:12:27,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:12:27,454 INFO L87 Difference]: Start difference. First operand 5525 states and 6667 transitions. Second operand 8 states. [2018-10-24 22:15:23,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:15:23,990 INFO L93 Difference]: Finished difference Result 11480 states and 13794 transitions. [2018-10-24 22:15:23,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:15:23,990 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 228 [2018-10-24 22:15:23,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:15:24,006 INFO L225 Difference]: With dead ends: 11480 [2018-10-24 22:15:24,006 INFO L226 Difference]: Without dead ends: 5961 [2018-10-24 22:15:24,016 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 229 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:15:24,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5961 states. [2018-10-24 22:15:24,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5961 to 5959. [2018-10-24 22:15:24,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5959 states. [2018-10-24 22:15:24,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5959 states to 5959 states and 7112 transitions. [2018-10-24 22:15:24,129 INFO L78 Accepts]: Start accepts. Automaton has 5959 states and 7112 transitions. Word has length 228 [2018-10-24 22:15:24,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:15:24,130 INFO L481 AbstractCegarLoop]: Abstraction has 5959 states and 7112 transitions. [2018-10-24 22:15:24,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 22:15:24,130 INFO L276 IsEmpty]: Start isEmpty. Operand 5959 states and 7112 transitions. [2018-10-24 22:15:24,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-10-24 22:15:24,136 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:15:24,137 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:15:24,137 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:15:24,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:15:24,138 INFO L82 PathProgramCache]: Analyzing trace with hash -2086311615, now seen corresponding path program 1 times [2018-10-24 22:15:24,138 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:15:24,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:15:24,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:15:24,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:15:24,139 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:15:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:15:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 22:15:24,507 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:15:24,507 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:15:24,507 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:15:24,508 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:15:24,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:15:24,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:15:24,509 INFO L87 Difference]: Start difference. First operand 5959 states and 7112 transitions. Second operand 4 states. Received shutdown request... [2018-10-24 22:15:26,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:15:26,142 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:15:26,148 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:15:26,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:15:26 BoogieIcfgContainer [2018-10-24 22:15:26,149 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:15:26,150 INFO L168 Benchmark]: Toolchain (without parser) took 236390.79 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -325.7 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 22:15:26,151 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-24 22:15:26,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1540.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:15:26,152 INFO L168 Benchmark]: Boogie Procedure Inliner took 480.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -925.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:15:26,153 INFO L168 Benchmark]: Boogie Preprocessor took 346.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:15:26,154 INFO L168 Benchmark]: RCFGBuilder took 12184.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 467.4 MB). Peak memory consumption was 467.4 MB. Max. memory is 7.1 GB. [2018-10-24 22:15:26,155 INFO L168 Benchmark]: TraceAbstraction took 221833.61 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: -33.5 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-24 22:15:26,160 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1540.84 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 480.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 773.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -925.1 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 346.74 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12184.00 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 467.4 MB). Peak memory consumption was 467.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 221833.61 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: -33.5 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 110]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 110). Cancelled while BasicCegarLoop was constructing difference of abstraction (5959states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1926 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 221.7s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 212.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3178 SDtfs, 7506 SDslu, 1765 SDs, 0 SdLazy, 13998 SolverSat, 2987 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 160.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 270 GetRequests, 238 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5959occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9957302609284987 AbsIntWeakeningRatio, 0.11894273127753303 AbsIntAvgWeakeningVarsNumRemoved, 1046.5638766519824 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 543 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 1134 NumberOfCodeBlocks, 1134 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1127 ConstructedInterpolants, 0 QuantifiedInterpolants, 776370 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 475/547 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown