java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label29_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:23:52,910 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:23:52,912 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:23:52,923 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:23:52,923 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:23:52,925 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:23:52,926 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:23:52,931 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:23:52,932 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:23:52,933 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:23:52,934 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:23:52,935 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:23:52,936 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:23:52,937 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:23:52,938 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:23:52,940 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:23:52,941 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:23:52,944 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:23:52,950 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:23:52,954 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:23:52,955 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:23:52,956 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:23:52,958 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 06:23:52,967 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 06:23:52,983 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:23:52,983 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:23:52,984 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:23:52,984 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:23:52,984 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:23:52,984 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:23:52,985 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:23:52,985 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:23:52,985 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:23:52,985 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:23:52,985 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:23:52,985 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:23:52,986 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:23:52,986 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:23:52,986 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:23:52,987 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:23:52,987 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:23:52,987 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:23:52,987 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:23:52,987 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:23:52,988 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:23:52,988 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:23:52,988 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:23:52,988 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:23:52,988 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:23:52,989 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:23:52,989 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:23:52,989 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:23:52,989 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:23:52,989 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:23:52,990 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:23:52,990 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:23:52,990 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:23:52,990 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:23:52,990 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:23:52,990 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:23:53,037 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:23:53,055 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:23:53,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:23:53,061 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:23:53,061 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:23:53,062 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label29_false-unreach-call_false-termination.c [2018-11-07 06:23:53,132 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e98b3e4/927e023c8fbe4fde951b7977ddb1a972/FLAGbef58629e [2018-11-07 06:23:53,655 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:23:53,656 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label29_false-unreach-call_false-termination.c [2018-11-07 06:23:53,673 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e98b3e4/927e023c8fbe4fde951b7977ddb1a972/FLAGbef58629e [2018-11-07 06:23:53,705 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66e98b3e4/927e023c8fbe4fde951b7977ddb1a972 [2018-11-07 06:23:53,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:23:53,720 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:23:53,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:23:53,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:23:53,725 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:23:53,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:23:53" (1/1) ... [2018-11-07 06:23:53,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33ddd7ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:53, skipping insertion in model container [2018-11-07 06:23:53,730 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:23:53" (1/1) ... [2018-11-07 06:23:53,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:23:53,807 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:23:54,350 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:23:54,355 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:23:54,565 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:23:54,590 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:23:54,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:54 WrapperNode [2018-11-07 06:23:54,590 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:23:54,592 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:23:54,592 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:23:54,592 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:23:54,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:54" (1/1) ... [2018-11-07 06:23:54,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:54" (1/1) ... [2018-11-07 06:23:54,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:23:54,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:23:54,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:23:54,758 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:23:54,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:54" (1/1) ... [2018-11-07 06:23:54,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:54" (1/1) ... [2018-11-07 06:23:54,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:54" (1/1) ... [2018-11-07 06:23:54,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:54" (1/1) ... [2018-11-07 06:23:54,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:54" (1/1) ... [2018-11-07 06:23:54,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:54" (1/1) ... [2018-11-07 06:23:54,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:54" (1/1) ... [2018-11-07 06:23:54,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:23:54,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:23:54,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:23:54,893 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:23:54,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:23:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:23:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:23:54,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:23:54,965 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:23:54,966 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:23:54,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:23:54,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:23:54,966 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:23:54,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:23:58,595 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:23:58,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:23:58 BoogieIcfgContainer [2018-11-07 06:23:58,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:23:58,598 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:23:58,598 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:23:58,602 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:23:58,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:23:53" (1/3) ... [2018-11-07 06:23:58,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@362e72d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:23:58, skipping insertion in model container [2018-11-07 06:23:58,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:23:54" (2/3) ... [2018-11-07 06:23:58,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@362e72d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:23:58, skipping insertion in model container [2018-11-07 06:23:58,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:23:58" (3/3) ... [2018-11-07 06:23:58,607 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label29_false-unreach-call_false-termination.c [2018-11-07 06:23:58,619 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:23:58,630 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:23:58,645 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:23:58,686 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:23:58,686 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:23:58,686 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:23:58,687 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:23:58,687 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:23:58,687 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:23:58,687 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:23:58,687 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:23:58,718 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-07 06:23:58,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-07 06:23:58,726 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:23:58,727 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] [2018-11-07 06:23:58,730 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:23:58,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:23:58,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1296810127, now seen corresponding path program 1 times [2018-11-07 06:23:58,740 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:23:58,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:58,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:23:58,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:23:58,801 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:23:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:23:59,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:23:59,116 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:23:59,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:23:59,117 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:23:59,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:23:59,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:23:59,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:23:59,141 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-11-07 06:24:02,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:24:02,296 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-11-07 06:24:02,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:24:02,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-11-07 06:24:02,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:24:02,320 INFO L225 Difference]: With dead ends: 894 [2018-11-07 06:24:02,321 INFO L226 Difference]: Without dead ends: 633 [2018-11-07 06:24:02,330 INFO L604 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 [2018-11-07 06:24:02,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-11-07 06:24:02,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-11-07 06:24:02,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-11-07 06:24:02,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 962 transitions. [2018-11-07 06:24:02,442 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 962 transitions. Word has length 23 [2018-11-07 06:24:02,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:24:02,442 INFO L480 AbstractCegarLoop]: Abstraction has 633 states and 962 transitions. [2018-11-07 06:24:02,443 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:24:02,443 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 962 transitions. [2018-11-07 06:24:02,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 06:24:02,451 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:24:02,452 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:24:02,452 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:24:02,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:02,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1722550117, now seen corresponding path program 1 times [2018-11-07 06:24:02,453 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:24:02,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:02,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:02,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:02,455 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:24:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:02,752 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:24:02,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:24:02,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 06:24:02,753 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:24:02,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 06:24:02,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 06:24:02,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:24:02,757 INFO L87 Difference]: Start difference. First operand 633 states and 962 transitions. Second operand 4 states. [2018-11-07 06:24:05,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:24:05,807 INFO L93 Difference]: Finished difference Result 2170 states and 3490 transitions. [2018-11-07 06:24:05,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 06:24:05,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2018-11-07 06:24:05,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:24:05,820 INFO L225 Difference]: With dead ends: 2170 [2018-11-07 06:24:05,820 INFO L226 Difference]: Without dead ends: 1543 [2018-11-07 06:24:05,826 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 06:24:05,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2018-11-07 06:24:05,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2018-11-07 06:24:05,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2018-11-07 06:24:05,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2271 transitions. [2018-11-07 06:24:05,916 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2271 transitions. Word has length 136 [2018-11-07 06:24:05,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:24:05,917 INFO L480 AbstractCegarLoop]: Abstraction has 1543 states and 2271 transitions. [2018-11-07 06:24:05,918 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 06:24:05,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2271 transitions. [2018-11-07 06:24:05,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-11-07 06:24:05,933 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:24:05,934 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 06:24:05,934 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:24:05,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:05,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1034192261, now seen corresponding path program 1 times [2018-11-07 06:24:05,936 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:24:05,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:05,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:05,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:05,937 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:24:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:06,451 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-11-07 06:24:06,708 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 32 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:24:06,708 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:24:06,709 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:24:06,710 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 212 with the following transitions: [2018-11-07 06:24:06,712 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [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], [514], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:24:06,764 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:24:06,764 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:24:10,472 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:24:10,473 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 06:24:10,486 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:10,486 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:24:14,407 INFO L227 lantSequenceWeakener]: Weakened 202 states. On average, predicates are now at 77.43% of their original sizes. [2018-11-07 06:24:14,407 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:24:14,588 INFO L415 sIntCurrentIteration]: We unified 210 AI predicates to 210 [2018-11-07 06:24:14,589 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:24:14,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:24:14,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2018-11-07 06:24:14,590 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:24:14,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:24:14,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:24:14,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:24:14,593 INFO L87 Difference]: Start difference. First operand 1543 states and 2271 transitions. Second operand 6 states. [2018-11-07 06:24:35,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:24:35,618 INFO L93 Difference]: Finished difference Result 3265 states and 4776 transitions. [2018-11-07 06:24:35,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 06:24:35,618 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 211 [2018-11-07 06:24:35,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:24:35,629 INFO L225 Difference]: With dead ends: 3265 [2018-11-07 06:24:35,629 INFO L226 Difference]: Without dead ends: 1728 [2018-11-07 06:24:35,635 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 211 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 06:24:35,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1728 states. [2018-11-07 06:24:35,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1728 to 1726. [2018-11-07 06:24:35,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1726 states. [2018-11-07 06:24:35,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2461 transitions. [2018-11-07 06:24:35,697 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2461 transitions. Word has length 211 [2018-11-07 06:24:35,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:24:35,697 INFO L480 AbstractCegarLoop]: Abstraction has 1726 states and 2461 transitions. [2018-11-07 06:24:35,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 06:24:35,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2461 transitions. [2018-11-07 06:24:35,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2018-11-07 06:24:35,707 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:24:35,707 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:24:35,707 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:24:35,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:35,708 INFO L82 PathProgramCache]: Analyzing trace with hash 931255223, now seen corresponding path program 1 times [2018-11-07 06:24:35,708 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:24:35,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:35,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:24:35,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:24:35,710 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:24:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:24:36,632 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 136 proven. 142 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 06:24:36,632 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:24:36,633 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:24:36,633 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 297 with the following transitions: [2018-11-07 06:24:36,633 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [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], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:24:36,639 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:24:36,639 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:24:40,622 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:24:40,623 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:24:40,634 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:24:40,634 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:24:42,852 INFO L227 lantSequenceWeakener]: Weakened 293 states. On average, predicates are now at 77.47% of their original sizes. [2018-11-07 06:24:42,852 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:24:43,500 INFO L415 sIntCurrentIteration]: We unified 295 AI predicates to 295 [2018-11-07 06:24:43,500 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:24:43,500 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:24:43,500 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2018-11-07 06:24:43,501 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:24:43,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:24:43,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:24:43,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:24:43,502 INFO L87 Difference]: Start difference. First operand 1726 states and 2461 transitions. Second operand 10 states. [2018-11-07 06:25:39,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:39,363 INFO L93 Difference]: Finished difference Result 4011 states and 5680 transitions. [2018-11-07 06:25:39,363 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 06:25:39,363 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 296 [2018-11-07 06:25:39,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:39,377 INFO L225 Difference]: With dead ends: 4011 [2018-11-07 06:25:39,377 INFO L226 Difference]: Without dead ends: 2474 [2018-11-07 06:25:39,383 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 304 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:25:39,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2474 states. [2018-11-07 06:25:39,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2474 to 2471. [2018-11-07 06:25:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2471 states. [2018-11-07 06:25:39,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3294 transitions. [2018-11-07 06:25:39,447 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3294 transitions. Word has length 296 [2018-11-07 06:25:39,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:39,448 INFO L480 AbstractCegarLoop]: Abstraction has 2471 states and 3294 transitions. [2018-11-07 06:25:39,448 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:25:39,448 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3294 transitions. [2018-11-07 06:25:39,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2018-11-07 06:25:39,458 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:39,459 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:25:39,459 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:39,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:39,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1791037874, now seen corresponding path program 1 times [2018-11-07 06:25:39,459 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:39,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:39,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:39,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:39,461 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2018-11-07 06:25:40,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:40,176 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:25:40,176 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 344 with the following transitions: [2018-11-07 06:25:40,178 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [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], [514], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:25:40,184 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:25:40,190 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:25:40,363 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:25:40,364 INFO L272 AbstractInterpreter]: Visited 143 different actions 280 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 06:25:40,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:40,400 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:25:40,733 INFO L227 lantSequenceWeakener]: Weakened 340 states. On average, predicates are now at 77.44% of their original sizes. [2018-11-07 06:25:40,733 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:25:40,936 INFO L415 sIntCurrentIteration]: We unified 342 AI predicates to 342 [2018-11-07 06:25:40,936 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:25:40,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:25:40,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-07 06:25:40,937 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:25:40,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 06:25:40,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 06:25:40,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:25:40,938 INFO L87 Difference]: Start difference. First operand 2471 states and 3294 transitions. Second operand 10 states. [2018-11-07 06:25:54,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:25:54,422 INFO L93 Difference]: Finished difference Result 4941 states and 6630 transitions. [2018-11-07 06:25:54,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 06:25:54,422 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 343 [2018-11-07 06:25:54,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:25:54,435 INFO L225 Difference]: With dead ends: 4941 [2018-11-07 06:25:54,436 INFO L226 Difference]: Without dead ends: 2659 [2018-11-07 06:25:54,443 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 350 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2018-11-07 06:25:54,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2659 states. [2018-11-07 06:25:54,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2659 to 2656. [2018-11-07 06:25:54,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2656 states. [2018-11-07 06:25:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 3493 transitions. [2018-11-07 06:25:54,524 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 3493 transitions. Word has length 343 [2018-11-07 06:25:54,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:25:54,525 INFO L480 AbstractCegarLoop]: Abstraction has 2656 states and 3493 transitions. [2018-11-07 06:25:54,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 06:25:54,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 3493 transitions. [2018-11-07 06:25:54,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 424 [2018-11-07 06:25:54,541 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:25:54,542 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:25:54,542 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:25:54,542 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:25:54,542 INFO L82 PathProgramCache]: Analyzing trace with hash -296131329, now seen corresponding path program 1 times [2018-11-07 06:25:54,543 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:25:54,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:54,550 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:25:54,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:25:54,551 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:25:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:25:54,904 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-11-07 06:25:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 212 proven. 257 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2018-11-07 06:25:55,600 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:25:55,600 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:25:55,601 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 424 with the following transitions: [2018-11-07 06:25:55,601 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [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], [514], [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], [619], [623], [627], [630], [631], [635], [639], [643], [647], [651], [654], [655], [658], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:25:55,606 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:25:55,606 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:00,843 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:26:00,843 INFO L272 AbstractInterpreter]: Visited 121 different actions 362 times. Merged at 7 different actions 21 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-07 06:26:00,851 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:00,851 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:26:01,818 INFO L227 lantSequenceWeakener]: Weakened 420 states. On average, predicates are now at 80.1% of their original sizes. [2018-11-07 06:26:01,818 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:26:01,951 INFO L415 sIntCurrentIteration]: We unified 422 AI predicates to 422 [2018-11-07 06:26:01,951 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:26:01,952 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:26:01,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-11-07 06:26:01,952 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:26:01,953 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:26:01,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:26:01,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-07 06:26:01,953 INFO L87 Difference]: Start difference. First operand 2656 states and 3493 transitions. Second operand 9 states. [2018-11-07 06:26:17,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:26:17,961 INFO L93 Difference]: Finished difference Result 5623 states and 7744 transitions. [2018-11-07 06:26:17,961 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 06:26:17,962 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 423 [2018-11-07 06:26:17,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:26:17,976 INFO L225 Difference]: With dead ends: 5623 [2018-11-07 06:26:17,976 INFO L226 Difference]: Without dead ends: 3341 [2018-11-07 06:26:17,985 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 429 GetRequests, 415 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2018-11-07 06:26:17,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3341 states. [2018-11-07 06:26:18,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3341 to 3311. [2018-11-07 06:26:18,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3311 states. [2018-11-07 06:26:18,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 4296 transitions. [2018-11-07 06:26:18,061 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 4296 transitions. Word has length 423 [2018-11-07 06:26:18,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:26:18,061 INFO L480 AbstractCegarLoop]: Abstraction has 3311 states and 4296 transitions. [2018-11-07 06:26:18,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 06:26:18,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 4296 transitions. [2018-11-07 06:26:18,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2018-11-07 06:26:18,077 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:18,077 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:26:18,078 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:18,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:18,078 INFO L82 PathProgramCache]: Analyzing trace with hash 1728773980, now seen corresponding path program 1 times [2018-11-07 06:26:18,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:18,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:18,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:18,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:18,079 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:18,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 178 proven. 253 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2018-11-07 06:26:18,477 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:18,477 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:26:18,477 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 482 with the following transitions: [2018-11-07 06:26:18,478 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [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], [510], [511], [514], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:26:18,480 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:26:18,481 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:24,613 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:26:24,613 INFO L272 AbstractInterpreter]: Visited 125 different actions 505 times. Merged at 10 different actions 41 times. Widened at 1 different actions 1 times. Found 10 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-07 06:26:24,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:24,620 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:26:24,620 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:24,620 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:26:24,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:24,631 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:26:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:24,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:26:25,301 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 606 proven. 2 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2018-11-07 06:26:25,302 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:26:25,610 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 06:26:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 178 proven. 253 refuted. 0 times theorem prover too weak. 451 trivial. 0 not checked. [2018-11-07 06:26:26,052 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:26:26,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 10 [2018-11-07 06:26:26,053 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:26:26,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 06:26:26,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 06:26:26,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-07 06:26:26,055 INFO L87 Difference]: Start difference. First operand 3311 states and 4296 transitions. Second operand 9 states. [2018-11-07 06:26:33,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:26:33,145 INFO L93 Difference]: Finished difference Result 8977 states and 12987 transitions. [2018-11-07 06:26:33,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-07 06:26:33,146 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 481 [2018-11-07 06:26:33,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:26:33,171 INFO L225 Difference]: With dead ends: 8977 [2018-11-07 06:26:33,171 INFO L226 Difference]: Without dead ends: 5671 [2018-11-07 06:26:33,193 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1012 GetRequests, 979 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=245, Invalid=747, Unknown=0, NotChecked=0, Total=992 [2018-11-07 06:26:33,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5671 states. [2018-11-07 06:26:33,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5671 to 5642. [2018-11-07 06:26:33,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5642 states. [2018-11-07 06:26:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5642 states to 5642 states and 7258 transitions. [2018-11-07 06:26:33,327 INFO L78 Accepts]: Start accepts. Automaton has 5642 states and 7258 transitions. Word has length 481 [2018-11-07 06:26:33,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:26:33,328 INFO L480 AbstractCegarLoop]: Abstraction has 5642 states and 7258 transitions. [2018-11-07 06:26:33,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 06:26:33,328 INFO L276 IsEmpty]: Start isEmpty. Operand 5642 states and 7258 transitions. [2018-11-07 06:26:33,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-11-07 06:26:33,344 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:33,344 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:26:33,345 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:33,345 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:33,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1495468967, now seen corresponding path program 1 times [2018-11-07 06:26:33,345 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:33,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:33,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:33,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:33,347 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:34,123 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-07 06:26:34,740 WARN L179 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-11-07 06:26:35,489 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 400 proven. 387 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2018-11-07 06:26:35,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:35,490 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:26:35,490 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 507 with the following transitions: [2018-11-07 06:26:35,491 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [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], [510], [511], [514], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:26:35,495 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:26:35,495 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:26:46,006 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:26:46,006 INFO L272 AbstractInterpreter]: Visited 125 different actions 496 times. Merged at 9 different actions 32 times. Never widened. Found 8 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 06:26:46,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:46,017 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:26:46,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:46,017 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:26:46,028 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:46,028 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:26:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:46,164 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:26:46,457 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 714 proven. 2 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2018-11-07 06:26:46,457 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:26:47,060 INFO L134 CoverageAnalysis]: Checked inductivity of 932 backedges. 249 proven. 144 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2018-11-07 06:26:47,082 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:26:47,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 19 [2018-11-07 06:26:47,083 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:26:47,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-07 06:26:47,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-07 06:26:47,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2018-11-07 06:26:47,085 INFO L87 Difference]: Start difference. First operand 5642 states and 7258 transitions. Second operand 17 states. [2018-11-07 06:26:55,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:26:55,318 INFO L93 Difference]: Finished difference Result 16067 states and 22567 transitions. [2018-11-07 06:26:55,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-11-07 06:26:55,318 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 506 [2018-11-07 06:26:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:26:55,372 INFO L225 Difference]: With dead ends: 16067 [2018-11-07 06:26:55,372 INFO L226 Difference]: Without dead ends: 9729 [2018-11-07 06:26:55,423 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1091 GetRequests, 1034 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=652, Invalid=2770, Unknown=0, NotChecked=0, Total=3422 [2018-11-07 06:26:55,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9729 states. [2018-11-07 06:26:55,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9729 to 9507. [2018-11-07 06:26:55,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9507 states. [2018-11-07 06:26:55,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9507 states to 9507 states and 11011 transitions. [2018-11-07 06:26:55,683 INFO L78 Accepts]: Start accepts. Automaton has 9507 states and 11011 transitions. Word has length 506 [2018-11-07 06:26:55,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:26:55,683 INFO L480 AbstractCegarLoop]: Abstraction has 9507 states and 11011 transitions. [2018-11-07 06:26:55,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-07 06:26:55,684 INFO L276 IsEmpty]: Start isEmpty. Operand 9507 states and 11011 transitions. [2018-11-07 06:26:55,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 745 [2018-11-07 06:26:55,695 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:26:55,696 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2018-11-07 06:26:55,696 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:26:55,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:26:55,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1644735688, now seen corresponding path program 1 times [2018-11-07 06:26:55,697 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:26:55,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:55,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:26:55,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:26:55,698 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:26:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:26:56,529 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 06:26:56,727 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-07 06:26:58,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 468 proven. 767 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2018-11-07 06:26:58,184 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:26:58,184 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:26:58,184 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 745 with the following transitions: [2018-11-07 06:26:58,185 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [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], [514], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:26:58,188 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:26:58,189 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:27:03,602 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:27:03,602 INFO L272 AbstractInterpreter]: Visited 192 different actions 770 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 9 fixpoints after 4 different actions. Largest state had 24 variables. [2018-11-07 06:27:03,612 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:03,612 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:27:03,612 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:03,612 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:27:03,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:03,623 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:27:03,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:03,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:27:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 927 proven. 2 refuted. 0 times theorem prover too weak. 671 trivial. 0 not checked. [2018-11-07 06:27:04,626 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:27:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 589 proven. 74 refuted. 0 times theorem prover too weak. 937 trivial. 0 not checked. [2018-11-07 06:27:05,284 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:27:05,284 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 6, 6] total 20 [2018-11-07 06:27:05,285 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:27:05,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-07 06:27:05,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-07 06:27:05,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2018-11-07 06:27:05,287 INFO L87 Difference]: Start difference. First operand 9507 states and 11011 transitions. Second operand 18 states. [2018-11-07 06:27:09,446 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 68 [2018-11-07 06:27:09,591 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 35 [2018-11-07 06:27:15,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:15,135 INFO L93 Difference]: Finished difference Result 21261 states and 25596 transitions. [2018-11-07 06:27:15,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2018-11-07 06:27:15,136 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 744 [2018-11-07 06:27:15,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:15,175 INFO L225 Difference]: With dead ends: 21261 [2018-11-07 06:27:15,175 INFO L226 Difference]: Without dead ends: 11943 [2018-11-07 06:27:15,201 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1585 GetRequests, 1510 SyntacticMatches, 8 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1510 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=917, Invalid=3775, Unknown=0, NotChecked=0, Total=4692 [2018-11-07 06:27:15,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11943 states. [2018-11-07 06:27:15,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11943 to 11645. [2018-11-07 06:27:15,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11645 states. [2018-11-07 06:27:15,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11645 states to 11645 states and 13509 transitions. [2018-11-07 06:27:15,450 INFO L78 Accepts]: Start accepts. Automaton has 11645 states and 13509 transitions. Word has length 744 [2018-11-07 06:27:15,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:15,451 INFO L480 AbstractCegarLoop]: Abstraction has 11645 states and 13509 transitions. [2018-11-07 06:27:15,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-07 06:27:15,452 INFO L276 IsEmpty]: Start isEmpty. Operand 11645 states and 13509 transitions. [2018-11-07 06:27:15,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 778 [2018-11-07 06:27:15,465 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:15,465 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:27:15,466 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:15,466 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:15,466 INFO L82 PathProgramCache]: Analyzing trace with hash -354100163, now seen corresponding path program 1 times [2018-11-07 06:27:15,467 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:15,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:15,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:15,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:15,468 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:18,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 629 proven. 677 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2018-11-07 06:27:18,033 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:18,033 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:27:18,033 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 778 with the following transitions: [2018-11-07 06:27:18,033 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [85], [87], [90], [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], [514], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [686], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [854], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-07 06:27:18,036 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:27:18,036 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:27:23,404 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 06:27:23,404 INFO L272 AbstractInterpreter]: Visited 193 different actions 774 times. Merged at 10 different actions 38 times. Widened at 1 different actions 1 times. Found 11 fixpoints after 5 different actions. Largest state had 24 variables. [2018-11-07 06:27:23,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:23,413 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 06:27:23,413 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:27:23,413 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 06:27:23,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:23,423 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 06:27:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:27:23,602 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 06:27:24,768 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 960 proven. 2 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2018-11-07 06:27:24,769 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 06:27:25,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 622 proven. 74 refuted. 0 times theorem prover too weak. 944 trivial. 0 not checked. [2018-11-07 06:27:25,555 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 06:27:25,555 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 5, 5] total 22 [2018-11-07 06:27:25,555 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 06:27:25,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-07 06:27:25,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-07 06:27:25,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2018-11-07 06:27:25,557 INFO L87 Difference]: Start difference. First operand 11645 states and 13509 transitions. Second operand 20 states. [2018-11-07 06:27:30,427 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2018-11-07 06:27:38,012 WARN L179 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 43 [2018-11-07 06:27:39,938 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2018-11-07 06:27:40,798 WARN L179 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 26 [2018-11-07 06:27:41,655 WARN L179 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 31 [2018-11-07 06:27:44,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:27:44,962 INFO L93 Difference]: Finished difference Result 31791 states and 38911 transitions. [2018-11-07 06:27:44,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 106 states. [2018-11-07 06:27:44,962 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 777 [2018-11-07 06:27:44,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:27:45,039 INFO L225 Difference]: With dead ends: 31791 [2018-11-07 06:27:45,040 INFO L226 Difference]: Without dead ends: 20337 [2018-11-07 06:27:45,082 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1762 GetRequests, 1638 SyntacticMatches, 5 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5133 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1922, Invalid=12598, Unknown=0, NotChecked=0, Total=14520 [2018-11-07 06:27:45,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20337 states. [2018-11-07 06:27:45,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20337 to 19762. [2018-11-07 06:27:45,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19762 states. [2018-11-07 06:27:45,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19762 states to 19762 states and 22925 transitions. [2018-11-07 06:27:45,545 INFO L78 Accepts]: Start accepts. Automaton has 19762 states and 22925 transitions. Word has length 777 [2018-11-07 06:27:45,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:27:45,546 INFO L480 AbstractCegarLoop]: Abstraction has 19762 states and 22925 transitions. [2018-11-07 06:27:45,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-07 06:27:45,547 INFO L276 IsEmpty]: Start isEmpty. Operand 19762 states and 22925 transitions. [2018-11-07 06:27:45,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 953 [2018-11-07 06:27:45,570 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:27:45,571 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:27:45,571 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:27:45,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:27:45,572 INFO L82 PathProgramCache]: Analyzing trace with hash 548253286, now seen corresponding path program 1 times [2018-11-07 06:27:45,572 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:27:45,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:45,573 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:27:45,573 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:27:45,573 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:27:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-11-07 06:27:45,884 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:919) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:216) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:434) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-07 06:27:45,893 INFO L168 Benchmark]: Toolchain (without parser) took 232172.76 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.9 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 06:27:45,895 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. [2018-11-07 06:27:45,896 INFO L168 Benchmark]: CACSL2BoogieTranslator took 870.31 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-11-07 06:27:45,897 INFO L168 Benchmark]: Boogie Procedure Inliner took 166.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2018-11-07 06:27:45,901 INFO L168 Benchmark]: Boogie Preprocessor took 133.93 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 06:27:45,902 INFO L168 Benchmark]: RCFGBuilder took 3704.35 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.6 MB). Peak memory consumption was 118.6 MB. Max. memory is 7.1 GB. [2018-11-07 06:27:45,905 INFO L168 Benchmark]: TraceAbstraction took 227292.15 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -808.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 06:27:45,915 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 870.31 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: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 166.27 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 736.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -838.5 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.93 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 3704.35 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.6 MB). Peak memory consumption was 118.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227292.15 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 2.9 GB in the end (delta: -808.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:215) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown