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/Problem11_label42_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:09:38,728 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:09:38,730 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:09:38,742 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:09:38,742 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:09:38,743 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:09:38,745 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:09:38,747 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:09:38,749 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:09:38,750 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:09:38,751 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:09:38,751 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:09:38,752 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:09:38,753 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:09:38,754 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:09:38,755 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:09:38,756 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:09:38,759 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:09:38,761 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:09:38,763 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:09:38,764 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:09:38,766 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:09:38,769 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 22:09:38,769 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 22:09:38,770 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 22:09:38,771 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 22:09:38,772 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 22:09:38,773 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 22:09:38,774 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 22:09:38,776 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 22:09:38,777 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 22:09:38,777 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 22:09:38,784 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 [2018-10-23 22:09:38,802 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:09:38,802 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:09:38,803 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:09:38,803 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:09:38,804 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:09:38,804 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:09:38,804 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:09:38,804 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:09:38,804 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:09:38,805 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:09:38,805 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:09:38,805 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:09:38,806 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:09:38,806 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:09:38,806 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:09:38,807 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:09:38,807 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:09:38,807 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:09:38,807 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:09:38,807 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:09:38,808 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:09:38,808 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:09:38,808 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:09:38,808 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:09:38,808 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:09:38,809 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:09:38,809 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:09:38,809 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:09:38,809 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:09:38,809 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:09:38,810 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:09:38,810 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:09:38,810 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:09:38,810 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:09:38,860 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:09:38,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:09:38,880 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:09:38,882 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:09:38,882 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:09:38,883 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label42_false-unreach-call.c [2018-10-23 22:09:38,941 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/08c209ed1/04e0bb7b832047c3b72d123039d76e13/FLAG99a782a19 [2018-10-23 22:09:39,555 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:09:39,556 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label42_false-unreach-call.c [2018-10-23 22:09:39,576 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/08c209ed1/04e0bb7b832047c3b72d123039d76e13/FLAG99a782a19 [2018-10-23 22:09:39,597 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/08c209ed1/04e0bb7b832047c3b72d123039d76e13 [2018-10-23 22:09:39,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:09:39,611 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:09:39,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:09:39,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:09:39,619 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:09:39,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:09:39" (1/1) ... [2018-10-23 22:09:39,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4461b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:39, skipping insertion in model container [2018-10-23 22:09:39,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:09:39" (1/1) ... [2018-10-23 22:09:39,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:09:39,727 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:09:40,418 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:09:40,422 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:09:40,645 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:09:40,665 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:09:40,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:40 WrapperNode [2018-10-23 22:09:40,665 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:09:40,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:09:40,667 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:09:40,667 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:09:40,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:40" (1/1) ... [2018-10-23 22:09:40,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:40" (1/1) ... [2018-10-23 22:09:40,959 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:09:40,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:09:40,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:09:40,960 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:09:40,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:40" (1/1) ... [2018-10-23 22:09:40,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:40" (1/1) ... [2018-10-23 22:09:40,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:40" (1/1) ... [2018-10-23 22:09:40,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:40" (1/1) ... [2018-10-23 22:09:41,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:40" (1/1) ... [2018-10-23 22:09:41,058 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:40" (1/1) ... [2018-10-23 22:09:41,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:40" (1/1) ... [2018-10-23 22:09:41,088 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:09:41,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:09:41,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:09:41,089 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:09:41,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:40" (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 [2018-10-23 22:09:41,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:09:41,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:09:41,158 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:09:41,158 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:09:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:09:41,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:09:41,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:09:41,160 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:09:46,093 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:09:46,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:09:46 BoogieIcfgContainer [2018-10-23 22:09:46,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:09:46,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:09:46,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:09:46,099 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:09:46,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:09:39" (1/3) ... [2018-10-23 22:09:46,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771a1288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:09:46, skipping insertion in model container [2018-10-23 22:09:46,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:09:40" (2/3) ... [2018-10-23 22:09:46,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771a1288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:09:46, skipping insertion in model container [2018-10-23 22:09:46,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:09:46" (3/3) ... [2018-10-23 22:09:46,103 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label42_false-unreach-call.c [2018-10-23 22:09:46,114 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:09:46,123 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:09:46,142 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:09:46,180 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:09:46,181 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:09:46,181 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:09:46,182 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:09:46,182 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:09:46,182 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:09:46,182 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:09:46,182 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:09:46,217 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-23 22:09:46,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-10-23 22:09:46,226 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:09:46,227 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] [2018-10-23 22:09:46,229 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:09:46,235 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:09:46,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1614038220, now seen corresponding path program 1 times [2018-10-23 22:09:46,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:09:46,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:09:46,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:09:46,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:09:46,295 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:09:46,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:09:46,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:09:46,621 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:09:46,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:09:46,621 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:09:46,627 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:09:46,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:09:46,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:09:46,647 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-23 22:09:50,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:09:50,450 INFO L93 Difference]: Finished difference Result 979 states and 1754 transitions. [2018-10-23 22:09:50,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:09:50,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-10-23 22:09:50,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:09:50,476 INFO L225 Difference]: With dead ends: 979 [2018-10-23 22:09:50,477 INFO L226 Difference]: Without dead ends: 680 [2018-10-23 22:09:50,486 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 [2018-10-23 22:09:50,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 680 states. [2018-10-23 22:09:50,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 680 to 484. [2018-10-23 22:09:50,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2018-10-23 22:09:50,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 730 transitions. [2018-10-23 22:09:50,578 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 730 transitions. Word has length 24 [2018-10-23 22:09:50,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:09:50,578 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 730 transitions. [2018-10-23 22:09:50,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:09:50,579 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 730 transitions. [2018-10-23 22:09:50,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-23 22:09:50,584 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:09:50,584 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:09:50,585 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:09:50,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:09:50,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1555485733, now seen corresponding path program 1 times [2018-10-23 22:09:50,586 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:09:50,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:09:50,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:09:50,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:09:50,588 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:09:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:09:51,011 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:09:51,011 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:09:51,011 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:09:51,012 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:09:51,014 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:09:51,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:09:51,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:09:51,015 INFO L87 Difference]: Start difference. First operand 484 states and 730 transitions. Second operand 6 states. [2018-10-23 22:09:55,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:09:55,272 INFO L93 Difference]: Finished difference Result 1555 states and 2493 transitions. [2018-10-23 22:09:55,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:09:55,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2018-10-23 22:09:55,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:09:55,287 INFO L225 Difference]: With dead ends: 1555 [2018-10-23 22:09:55,287 INFO L226 Difference]: Without dead ends: 1077 [2018-10-23 22:09:55,291 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 [2018-10-23 22:09:55,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1077 states. [2018-10-23 22:09:55,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1077 to 1063. [2018-10-23 22:09:55,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1063 states. [2018-10-23 22:09:55,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1063 states to 1063 states and 1592 transitions. [2018-10-23 22:09:55,359 INFO L78 Accepts]: Start accepts. Automaton has 1063 states and 1592 transitions. Word has length 97 [2018-10-23 22:09:55,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:09:55,359 INFO L481 AbstractCegarLoop]: Abstraction has 1063 states and 1592 transitions. [2018-10-23 22:09:55,359 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:09:55,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1063 states and 1592 transitions. [2018-10-23 22:09:55,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-23 22:09:55,363 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:09:55,363 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:09:55,363 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:09:55,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:09:55,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1339657584, now seen corresponding path program 1 times [2018-10-23 22:09:55,364 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:09:55,365 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:09:55,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:09:55,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:09:55,366 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:09:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:09:55,518 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:09:55,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:09:55,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:09:55,518 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:09:55,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:09:55,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:09:55,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:09:55,520 INFO L87 Difference]: Start difference. First operand 1063 states and 1592 transitions. Second operand 3 states. [2018-10-23 22:09:57,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:09:57,626 INFO L93 Difference]: Finished difference Result 2515 states and 3829 transitions. [2018-10-23 22:09:57,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:09:57,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2018-10-23 22:09:57,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:09:57,645 INFO L225 Difference]: With dead ends: 2515 [2018-10-23 22:09:57,645 INFO L226 Difference]: Without dead ends: 1458 [2018-10-23 22:09:57,651 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:09:57,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2018-10-23 22:09:57,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1450. [2018-10-23 22:09:57,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1450 states. [2018-10-23 22:09:57,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2093 transitions. [2018-10-23 22:09:57,698 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2093 transitions. Word has length 98 [2018-10-23 22:09:57,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:09:57,699 INFO L481 AbstractCegarLoop]: Abstraction has 1450 states and 2093 transitions. [2018-10-23 22:09:57,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:09:57,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2093 transitions. [2018-10-23 22:09:57,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-10-23 22:09:57,709 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:09:57,709 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:09:57,710 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:09:57,710 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:09:57,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1332496631, now seen corresponding path program 1 times [2018-10-23 22:09:57,710 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:09:57,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:09:57,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:09:57,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:09:57,712 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:09:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:09:57,895 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:09:57,896 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:09:57,896 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:09:57,896 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:09:57,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:09:57,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:09:57,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:09:57,897 INFO L87 Difference]: Start difference. First operand 1450 states and 2093 transitions. Second operand 3 states. [2018-10-23 22:10:00,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:10:00,061 INFO L93 Difference]: Finished difference Result 3285 states and 4834 transitions. [2018-10-23 22:10:00,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:10:00,062 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 99 [2018-10-23 22:10:00,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:10:00,074 INFO L225 Difference]: With dead ends: 3285 [2018-10-23 22:10:00,074 INFO L226 Difference]: Without dead ends: 1841 [2018-10-23 22:10:00,083 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:10:00,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1841 states. [2018-10-23 22:10:00,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1841 to 1836. [2018-10-23 22:10:00,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1836 states. [2018-10-23 22:10:00,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1836 states to 1836 states and 2597 transitions. [2018-10-23 22:10:00,138 INFO L78 Accepts]: Start accepts. Automaton has 1836 states and 2597 transitions. Word has length 99 [2018-10-23 22:10:00,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:10:00,139 INFO L481 AbstractCegarLoop]: Abstraction has 1836 states and 2597 transitions. [2018-10-23 22:10:00,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:10:00,139 INFO L276 IsEmpty]: Start isEmpty. Operand 1836 states and 2597 transitions. [2018-10-23 22:10:00,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2018-10-23 22:10:00,141 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:10:00,141 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:10:00,142 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:10:00,142 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:10:00,142 INFO L82 PathProgramCache]: Analyzing trace with hash 226250827, now seen corresponding path program 1 times [2018-10-23 22:10:00,142 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:10:00,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:10:00,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:10:00,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:10:00,144 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:10:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:10:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:10:00,458 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:10:00,459 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-23 22:10:00,459 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:10:00,460 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:10:00,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:10:00,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-23 22:10:00,460 INFO L87 Difference]: Start difference. First operand 1836 states and 2597 transitions. Second operand 6 states. [2018-10-23 22:10:04,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:10:04,677 INFO L93 Difference]: Finished difference Result 5990 states and 8874 transitions. [2018-10-23 22:10:04,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-23 22:10:04,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2018-10-23 22:10:04,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:10:04,706 INFO L225 Difference]: With dead ends: 5990 [2018-10-23 22:10:04,706 INFO L226 Difference]: Without dead ends: 4160 [2018-10-23 22:10:04,721 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-23 22:10:04,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4160 states. [2018-10-23 22:10:04,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4160 to 4098. [2018-10-23 22:10:04,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4098 states. [2018-10-23 22:10:04,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4098 states to 4098 states and 5505 transitions. [2018-10-23 22:10:04,866 INFO L78 Accepts]: Start accepts. Automaton has 4098 states and 5505 transitions. Word has length 105 [2018-10-23 22:10:04,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:10:04,867 INFO L481 AbstractCegarLoop]: Abstraction has 4098 states and 5505 transitions. [2018-10-23 22:10:04,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-23 22:10:04,867 INFO L276 IsEmpty]: Start isEmpty. Operand 4098 states and 5505 transitions. [2018-10-23 22:10:04,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2018-10-23 22:10:04,869 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:10:04,869 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 22:10:04,870 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:10:04,870 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:10:04,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1044552689, now seen corresponding path program 1 times [2018-10-23 22:10:04,870 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:10:04,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:10:04,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:10:04,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:10:04,872 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:10:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:10:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:10:05,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:10:05,027 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 22:10:05,027 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:10:05,027 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 22:10:05,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 22:10:05,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:10:05,029 INFO L87 Difference]: Start difference. First operand 4098 states and 5505 transitions. Second operand 3 states. [2018-10-23 22:10:06,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:10:06,514 INFO L93 Difference]: Finished difference Result 9133 states and 12584 transitions. [2018-10-23 22:10:06,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 22:10:06,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2018-10-23 22:10:06,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:10:06,549 INFO L225 Difference]: With dead ends: 9133 [2018-10-23 22:10:06,549 INFO L226 Difference]: Without dead ends: 5041 [2018-10-23 22:10:06,571 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 22:10:06,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5041 states. [2018-10-23 22:10:06,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5041 to 5029. [2018-10-23 22:10:06,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5029 states. [2018-10-23 22:10:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5029 states to 5029 states and 6702 transitions. [2018-10-23 22:10:06,699 INFO L78 Accepts]: Start accepts. Automaton has 5029 states and 6702 transitions. Word has length 119 [2018-10-23 22:10:06,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:10:06,699 INFO L481 AbstractCegarLoop]: Abstraction has 5029 states and 6702 transitions. [2018-10-23 22:10:06,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 22:10:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 5029 states and 6702 transitions. [2018-10-23 22:10:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-10-23 22:10:06,701 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:10:06,702 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:10:06,702 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:10:06,702 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:10:06,702 INFO L82 PathProgramCache]: Analyzing trace with hash 548177063, now seen corresponding path program 1 times [2018-10-23 22:10:06,703 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:10:06,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:10:06,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:10:06,704 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:10:06,704 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:10:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:10:07,219 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:10:07,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:10:07,220 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:10:07,221 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 157 with the following transitions: [2018-10-23 22:10:07,223 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [769], [772], [776], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-23 22:10:07,303 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:10:07,303 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:10:12,180 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:10:30,598 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-23 22:10:30,600 INFO L272 AbstractInterpreter]: Visited 139 different actions 404 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-23 22:10:30,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:10:30,648 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-23 22:10:34,139 INFO L232 lantSequenceWeakener]: Weakened 15 states. On average, predicates are now at 77.88% of their original sizes. [2018-10-23 22:10:34,139 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-23 22:11:32,271 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-23 22:11:32,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 22:11:32,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [8] total 24 [2018-10-23 22:11:32,272 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:11:32,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-23 22:11:32,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-23 22:11:32,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2018-10-23 22:11:32,273 INFO L87 Difference]: Start difference. First operand 5029 states and 6702 transitions. Second operand 18 states. Received shutdown request... [2018-10-23 22:13:45,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-23 22:13:45,271 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:13:45,277 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:13:45,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:13:45 BoogieIcfgContainer [2018-10-23 22:13:45,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:13:45,278 INFO L168 Benchmark]: Toolchain (without parser) took 245668.45 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 151.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:13:45,280 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-10-23 22:13:45,281 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1053.51 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2018-10-23 22:13:45,282 INFO L168 Benchmark]: Boogie Procedure Inliner took 293.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -824.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-23 22:13:45,283 INFO L168 Benchmark]: Boogie Preprocessor took 128.63 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. [2018-10-23 22:13:45,283 INFO L168 Benchmark]: RCFGBuilder took 5005.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.0 MB). Peak memory consumption was 187.0 MB. Max. memory is 7.1 GB. [2018-10-23 22:13:45,284 INFO L168 Benchmark]: TraceAbstraction took 239182.54 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 22:13:45,289 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1053.51 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: 55.5 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 293.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -824.6 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.63 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 5005.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 187.0 MB). Peak memory consumption was 187.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 239182.54 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 1.0 GB). Free memory was 2.0 GB in the beginning and 3.0 GB in the end (delta: -1.0 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 57]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 57). Cancelled while BasicCegarLoop was constructing difference of abstraction (5029states) and FLOYD_HOARE automaton (currently 15 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (180 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 239.1s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 151.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1784 SDtfs, 3755 SDslu, 805 SDs, 0 SdLazy, 7714 SolverSat, 1667 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 50.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 197 GetRequests, 111 SyntacticMatches, 47 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 62.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5029occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 23.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9941969619388975 AbsIntWeakeningRatio, 0.14838709677419354 AbsIntAvgWeakeningVarsNumRemoved, 1057.6903225806452 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 6 MinimizatonAttempts, 297 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 698 NumberOfCodeBlocks, 698 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 691 ConstructedInterpolants, 0 QuantifiedInterpolants, 328320 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 96/102 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown