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/Problem16_label35_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:23:23,553 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:23:23,555 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:23:23,568 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:23:23,569 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:23:23,570 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:23:23,571 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:23:23,573 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:23:23,575 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:23:23,575 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:23:23,576 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:23:23,577 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:23:23,578 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:23:23,578 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:23:23,580 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:23:23,580 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:23:23,581 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:23:23,583 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:23:23,585 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:23:23,587 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:23:23,588 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:23:23,592 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:23:23,597 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 03:23:23,614 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 [2018-10-27 03:23:23,643 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:23:23,644 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:23:23,645 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:23:23,645 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:23:23,645 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:23:23,645 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:23:23,645 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:23:23,646 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:23:23,646 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:23:23,647 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:23:23,647 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:23:23,647 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:23:23,648 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:23:23,648 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:23:23,649 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:23:23,649 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:23:23,649 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:23:23,649 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:23:23,649 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:23:23,650 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:23:23,650 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:23:23,650 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:23:23,650 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:23:23,650 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:23:23,650 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:23:23,651 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:23:23,651 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:23:23,651 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:23:23,651 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:23:23,651 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:23:23,653 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:23:23,653 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:23:23,653 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:23:23,653 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:23:23,710 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:23:23,730 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:23:23,735 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:23:23,737 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:23:23,737 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:23:23,738 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label35_true-unreach-call.c [2018-10-27 03:23:23,803 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2011a11ba/195c0d664fcc41508d9631a0bbf79d84/FLAGbb38362c3 [2018-10-27 03:23:24,518 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:23:24,519 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label35_true-unreach-call.c [2018-10-27 03:23:24,546 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2011a11ba/195c0d664fcc41508d9631a0bbf79d84/FLAGbb38362c3 [2018-10-27 03:23:24,562 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2011a11ba/195c0d664fcc41508d9631a0bbf79d84 [2018-10-27 03:23:24,573 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:23:24,575 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:23:24,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:23:24,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:23:24,579 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:23:24,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:23:24" (1/1) ... [2018-10-27 03:23:24,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28800817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:24, skipping insertion in model container [2018-10-27 03:23:24,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:23:24" (1/1) ... [2018-10-27 03:23:24,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:23:24,677 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:23:25,386 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:23:25,390 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:23:25,635 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:23:25,657 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:23:25,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:25 WrapperNode [2018-10-27 03:23:25,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:23:25,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:23:25,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:23:25,659 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:23:25,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:25" (1/1) ... [2018-10-27 03:23:25,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:25" (1/1) ... [2018-10-27 03:23:25,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:23:25,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:23:25,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:23:25,979 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:23:25,990 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:25" (1/1) ... [2018-10-27 03:23:25,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:25" (1/1) ... [2018-10-27 03:23:26,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:25" (1/1) ... [2018-10-27 03:23:26,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:25" (1/1) ... [2018-10-27 03:23:26,079 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:25" (1/1) ... [2018-10-27 03:23:26,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:25" (1/1) ... [2018-10-27 03:23:26,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:25" (1/1) ... [2018-10-27 03:23:26,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:23:26,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:23:26,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:23:26,175 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:23:26,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:25" (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 [2018-10-27 03:23:26,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:23:26,249 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:23:26,249 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:23:26,250 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:23:26,250 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:23:26,250 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:23:26,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:23:26,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:23:26,251 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:23:26,251 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:23:33,150 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:23:33,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:23:33 BoogieIcfgContainer [2018-10-27 03:23:33,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:23:33,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:23:33,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:23:33,156 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:23:33,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:23:24" (1/3) ... [2018-10-27 03:23:33,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f24669f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:23:33, skipping insertion in model container [2018-10-27 03:23:33,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:23:25" (2/3) ... [2018-10-27 03:23:33,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f24669f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:23:33, skipping insertion in model container [2018-10-27 03:23:33,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:23:33" (3/3) ... [2018-10-27 03:23:33,160 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label35_true-unreach-call.c [2018-10-27 03:23:33,171 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:23:33,181 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:23:33,200 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:23:33,245 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:23:33,245 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:23:33,246 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:23:33,246 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:23:33,246 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:23:33,246 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:23:33,246 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:23:33,246 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:23:33,288 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-27 03:23:33,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-10-27 03:23:33,298 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:23:33,300 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:23:33,302 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:23:33,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:23:33,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1960867948, now seen corresponding path program 1 times [2018-10-27 03:23:33,311 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:23:33,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:33,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:23:33,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:33,358 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:23:33,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:23:33,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:23:33,828 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:23:33,828 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:23:33,828 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:23:33,835 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:23:33,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:23:33,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:23:33,857 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 4 states. [2018-10-27 03:23:39,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:23:39,226 INFO L93 Difference]: Finished difference Result 1513 states and 2838 transitions. [2018-10-27 03:23:39,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:23:39,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-10-27 03:23:39,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:23:39,263 INFO L225 Difference]: With dead ends: 1513 [2018-10-27 03:23:39,264 INFO L226 Difference]: Without dead ends: 1097 [2018-10-27 03:23:39,273 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 [2018-10-27 03:23:39,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1097 states. [2018-10-27 03:23:39,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1097 to 744. [2018-10-27 03:23:39,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-27 03:23:39,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1357 transitions. [2018-10-27 03:23:39,429 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1357 transitions. Word has length 48 [2018-10-27 03:23:39,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:23:39,429 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1357 transitions. [2018-10-27 03:23:39,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:23:39,430 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1357 transitions. [2018-10-27 03:23:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-10-27 03:23:39,440 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:23:39,440 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, 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] [2018-10-27 03:23:39,441 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:23:39,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:23:39,441 INFO L82 PathProgramCache]: Analyzing trace with hash 321031098, now seen corresponding path program 1 times [2018-10-27 03:23:39,441 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:23:39,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:39,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:23:39,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:39,443 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:23:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:23:39,818 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:23:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:23:40,016 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:23:40,016 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:23:40,016 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:23:40,018 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:23:40,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:23:40,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:23:40,019 INFO L87 Difference]: Start difference. First operand 744 states and 1357 transitions. Second operand 5 states. [2018-10-27 03:23:45,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:23:45,205 INFO L93 Difference]: Finished difference Result 2196 states and 4092 transitions. [2018-10-27 03:23:45,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:23:45,216 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 118 [2018-10-27 03:23:45,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:23:45,230 INFO L225 Difference]: With dead ends: 2196 [2018-10-27 03:23:45,231 INFO L226 Difference]: Without dead ends: 1458 [2018-10-27 03:23:45,235 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:23:45,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1458 states. [2018-10-27 03:23:45,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1458 to 1438. [2018-10-27 03:23:45,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2018-10-27 03:23:45,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2551 transitions. [2018-10-27 03:23:45,317 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2551 transitions. Word has length 118 [2018-10-27 03:23:45,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:23:45,318 INFO L481 AbstractCegarLoop]: Abstraction has 1438 states and 2551 transitions. [2018-10-27 03:23:45,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:23:45,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2551 transitions. [2018-10-27 03:23:45,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-27 03:23:45,331 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:23:45,331 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, 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] [2018-10-27 03:23:45,331 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:23:45,332 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:23:45,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1441710001, now seen corresponding path program 1 times [2018-10-27 03:23:45,332 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:23:45,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:45,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:23:45,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:45,334 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:23:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:23:45,538 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:23:45,539 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:23:45,539 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:23:45,539 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:23:45,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:23:45,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:23:45,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:23:45,540 INFO L87 Difference]: Start difference. First operand 1438 states and 2551 transitions. Second operand 6 states. [2018-10-27 03:23:50,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:23:50,550 INFO L93 Difference]: Finished difference Result 4237 states and 7540 transitions. [2018-10-27 03:23:50,560 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:23:50,560 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2018-10-27 03:23:50,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:23:50,578 INFO L225 Difference]: With dead ends: 4237 [2018-10-27 03:23:50,578 INFO L226 Difference]: Without dead ends: 2805 [2018-10-27 03:23:50,588 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 [2018-10-27 03:23:50,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2805 states. [2018-10-27 03:23:50,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2805 to 2785. [2018-10-27 03:23:50,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2785 states. [2018-10-27 03:23:50,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 4352 transitions. [2018-10-27 03:23:50,671 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 4352 transitions. Word has length 121 [2018-10-27 03:23:50,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:23:50,672 INFO L481 AbstractCegarLoop]: Abstraction has 2785 states and 4352 transitions. [2018-10-27 03:23:50,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:23:50,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 4352 transitions. [2018-10-27 03:23:50,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-27 03:23:50,675 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:23:50,675 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, 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] [2018-10-27 03:23:50,675 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:23:50,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:23:50,676 INFO L82 PathProgramCache]: Analyzing trace with hash 692588274, now seen corresponding path program 1 times [2018-10-27 03:23:50,676 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:23:50,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:50,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:23:50,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:50,677 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:23:50,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:23:50,875 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:23:50,875 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:23:50,875 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:23:50,876 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:23:50,876 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:23:50,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:23:50,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:23:50,877 INFO L87 Difference]: Start difference. First operand 2785 states and 4352 transitions. Second operand 6 states. [2018-10-27 03:23:55,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:23:55,231 INFO L93 Difference]: Finished difference Result 6952 states and 11048 transitions. [2018-10-27 03:23:55,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:23:55,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-10-27 03:23:55,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:23:55,259 INFO L225 Difference]: With dead ends: 6952 [2018-10-27 03:23:55,259 INFO L226 Difference]: Without dead ends: 4173 [2018-10-27 03:23:55,278 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 [2018-10-27 03:23:55,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4173 states. [2018-10-27 03:23:55,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4173 to 4153. [2018-10-27 03:23:55,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4153 states. [2018-10-27 03:23:55,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4153 states to 4153 states and 5896 transitions. [2018-10-27 03:23:55,417 INFO L78 Accepts]: Start accepts. Automaton has 4153 states and 5896 transitions. Word has length 122 [2018-10-27 03:23:55,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:23:55,418 INFO L481 AbstractCegarLoop]: Abstraction has 4153 states and 5896 transitions. [2018-10-27 03:23:55,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:23:55,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4153 states and 5896 transitions. [2018-10-27 03:23:55,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-27 03:23:55,421 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:23:55,422 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, 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] [2018-10-27 03:23:55,422 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:23:55,422 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:23:55,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1832365575, now seen corresponding path program 1 times [2018-10-27 03:23:55,423 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:23:55,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:55,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:23:55,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:23:55,424 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:23:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:23:55,696 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:23:55,697 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:23:55,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:23:55,697 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:23:55,698 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:23:55,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:23:55,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:23:55,698 INFO L87 Difference]: Start difference. First operand 4153 states and 5896 transitions. Second operand 6 states. [2018-10-27 03:24:01,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:24:01,009 INFO L93 Difference]: Finished difference Result 11374 states and 16767 transitions. [2018-10-27 03:24:01,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:24:01,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-27 03:24:01,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:24:01,050 INFO L225 Difference]: With dead ends: 11374 [2018-10-27 03:24:01,051 INFO L226 Difference]: Without dead ends: 7227 [2018-10-27 03:24:01,082 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 [2018-10-27 03:24:01,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7227 states. [2018-10-27 03:24:01,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7227 to 7152. [2018-10-27 03:24:01,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7152 states. [2018-10-27 03:24:01,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7152 states to 7152 states and 9826 transitions. [2018-10-27 03:24:01,289 INFO L78 Accepts]: Start accepts. Automaton has 7152 states and 9826 transitions. Word has length 125 [2018-10-27 03:24:01,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:24:01,290 INFO L481 AbstractCegarLoop]: Abstraction has 7152 states and 9826 transitions. [2018-10-27 03:24:01,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:24:01,290 INFO L276 IsEmpty]: Start isEmpty. Operand 7152 states and 9826 transitions. [2018-10-27 03:24:01,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-27 03:24:01,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:24:01,293 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, 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] [2018-10-27 03:24:01,294 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:24:01,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:24:01,294 INFO L82 PathProgramCache]: Analyzing trace with hash 911780215, now seen corresponding path program 1 times [2018-10-27 03:24:01,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:24:01,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:24:01,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:24:01,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:24:01,296 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:24:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:24:01,548 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:24:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:24:01,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:24:01,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 03:24:01,751 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:24:01,752 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 03:24:01,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 03:24:01,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 03:24:01,753 INFO L87 Difference]: Start difference. First operand 7152 states and 9826 transitions. Second operand 6 states. [2018-10-27 03:24:07,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:24:07,931 INFO L93 Difference]: Finished difference Result 17771 states and 25546 transitions. [2018-10-27 03:24:07,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:24:07,933 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-10-27 03:24:07,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:24:07,998 INFO L225 Difference]: With dead ends: 17771 [2018-10-27 03:24:07,998 INFO L226 Difference]: Without dead ends: 10625 [2018-10-27 03:24:08,026 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 03:24:08,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10625 states. [2018-10-27 03:24:08,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10625 to 10585. [2018-10-27 03:24:08,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10585 states. [2018-10-27 03:24:08,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10585 states to 10585 states and 13819 transitions. [2018-10-27 03:24:08,311 INFO L78 Accepts]: Start accepts. Automaton has 10585 states and 13819 transitions. Word has length 133 [2018-10-27 03:24:08,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:24:08,312 INFO L481 AbstractCegarLoop]: Abstraction has 10585 states and 13819 transitions. [2018-10-27 03:24:08,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 03:24:08,312 INFO L276 IsEmpty]: Start isEmpty. Operand 10585 states and 13819 transitions. [2018-10-27 03:24:08,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-10-27 03:24:08,316 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:24:08,316 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 03:24:08,316 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:24:08,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:24:08,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1008425326, now seen corresponding path program 1 times [2018-10-27 03:24:08,317 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:24:08,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:24:08,318 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:24:08,318 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:24:08,318 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:24:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:24:08,598 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:24:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-27 03:24:08,747 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:24:08,747 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:24:08,748 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 141 with the following transitions: [2018-10-27 03:24:08,859 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [463], [465], [468], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-27 03:24:08,942 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:24:08,943 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:24:11,096 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:24:17,353 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:24:17,355 INFO L272 AbstractInterpreter]: Visited 99 different actions 288 times. Merged at 5 different actions 13 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 03:24:17,369 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:24:17,369 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:24:20,513 INFO L227 lantSequenceWeakener]: Weakened 21 states. On average, predicates are now at 82.68% of their original sizes. [2018-10-27 03:24:20,513 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:24:50,362 INFO L415 sIntCurrentIteration]: We unified 139 AI predicates to 139 [2018-10-27 03:24:50,362 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:24:50,364 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:24:50,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [4] total 16 [2018-10-27 03:24:50,364 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:24:50,365 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-27 03:24:50,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-27 03:24:50,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2018-10-27 03:24:50,366 INFO L87 Difference]: Start difference. First operand 10585 states and 13819 transitions. Second operand 14 states. Received shutdown request... [2018-10-27 03:27:30,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-27 03:27:30,639 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:27:30,644 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:27:30,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:27:30 BoogieIcfgContainer [2018-10-27 03:27:30,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:27:30,646 INFO L168 Benchmark]: Toolchain (without parser) took 246071.86 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -909.7 MB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-10-27 03:27:30,647 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 03:27:30,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1082.75 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:27:30,648 INFO L168 Benchmark]: Boogie Procedure Inliner took 319.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -843.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-27 03:27:30,649 INFO L168 Benchmark]: Boogie Preprocessor took 195.47 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-10-27 03:27:30,650 INFO L168 Benchmark]: RCFGBuilder took 6976.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 266.3 MB). Peak memory consumption was 266.3 MB. Max. memory is 7.1 GB. [2018-10-27 03:27:30,651 INFO L168 Benchmark]: TraceAbstraction took 237492.79 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -421.0 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-27 03:27:30,656 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1082.75 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 319.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -843.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 195.47 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: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6976.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 266.3 MB). Peak memory consumption was 266.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 237492.79 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.3 GB in the end (delta: -421.0 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 130). Cancelled while BasicCegarLoop was constructing difference of abstraction (10585states) and FLOYD_HOARE automaton (currently 19 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (2607 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 237.4s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 192.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 668 SDtfs, 11803 SDslu, 699 SDs, 0 SdLazy, 14857 SolverSat, 3691 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 91.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 201 GetRequests, 99 SyntacticMatches, 47 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 282 ImplicationChecksByTransitivity, 33.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10585occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.6s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9933531435720991 AbsIntWeakeningRatio, 0.14388489208633093 AbsIntAvgWeakeningVarsNumRemoved, 341.705035971223 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 528 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 807 NumberOfCodeBlocks, 807 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 800 ConstructedInterpolants, 0 QuantifiedInterpolants, 375441 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 209/246 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown