java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:53:35,889 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:53:35,891 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:53:35,903 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:53:35,903 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:53:35,904 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:53:35,906 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:53:35,907 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:53:35,909 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:53:35,911 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:53:35,912 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:53:35,913 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:53:35,914 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:53:35,915 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:53:35,918 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:53:35,919 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:53:35,919 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:53:35,922 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:53:35,932 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:53:35,934 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:53:35,935 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:53:35,936 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:53:35,938 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:53:35,947 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 01:53:35,963 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:53:35,963 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:53:35,964 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:53:35,964 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:53:35,964 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:53:35,964 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:53:35,965 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:53:35,965 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:53:35,965 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:53:35,965 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:53:35,965 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:53:35,966 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:53:35,966 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:53:35,966 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:53:35,967 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:53:35,967 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:53:35,967 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:53:35,967 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:53:35,967 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:53:35,968 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:53:35,968 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:53:35,968 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:53:35,968 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:53:35,968 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:53:35,968 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:53:35,969 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:53:35,969 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:53:35,969 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:53:35,969 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:53:35,969 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:53:35,970 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:53:35,970 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:53:35,970 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:53:35,970 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:53:36,033 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:53:36,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:53:36,050 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:53:36,051 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:53:36,052 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:53:36,053 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label28_true-unreach-call.c [2018-10-24 01:53:36,117 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3b35ebff4/7dcdb247c49f47739bd150f5590e8f95/FLAGbfa62d92c [2018-10-24 01:53:36,815 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:53:36,816 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label28_true-unreach-call.c [2018-10-24 01:53:36,835 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3b35ebff4/7dcdb247c49f47739bd150f5590e8f95/FLAGbfa62d92c [2018-10-24 01:53:36,854 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/3b35ebff4/7dcdb247c49f47739bd150f5590e8f95 [2018-10-24 01:53:36,865 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:53:36,867 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:53:36,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:53:36,868 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:53:36,874 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:53:36,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:53:36" (1/1) ... [2018-10-24 01:53:36,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e5c2a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:53:36, skipping insertion in model container [2018-10-24 01:53:36,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:53:36" (1/1) ... [2018-10-24 01:53:36,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:53:36,986 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:53:37,698 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:53:37,702 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:53:37,966 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:53:37,987 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:53:37,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:53:37 WrapperNode [2018-10-24 01:53:37,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:53:37,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:53:37,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:53:37,989 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:53:38,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:53:37" (1/1) ... [2018-10-24 01:53:38,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:53:37" (1/1) ... [2018-10-24 01:53:38,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:53:38,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:53:38,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:53:38,322 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:53:38,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:53:37" (1/1) ... [2018-10-24 01:53:38,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:53:37" (1/1) ... [2018-10-24 01:53:38,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:53:37" (1/1) ... [2018-10-24 01:53:38,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:53:37" (1/1) ... [2018-10-24 01:53:38,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:53:37" (1/1) ... [2018-10-24 01:53:38,416 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:53:37" (1/1) ... [2018-10-24 01:53:38,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:53:37" (1/1) ... [2018-10-24 01:53:38,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:53:38,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:53:38,479 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:53:38,479 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:53:38,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:53:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:53:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:53:38,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:53:38,555 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:53:38,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:53:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:53:38,556 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:53:38,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:53:38,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:53:38,557 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:53:38,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:53:44,779 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:53:44,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:53:44 BoogieIcfgContainer [2018-10-24 01:53:44,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:53:44,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:53:44,781 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:53:44,785 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:53:44,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:53:36" (1/3) ... [2018-10-24 01:53:44,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2edc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:53:44, skipping insertion in model container [2018-10-24 01:53:44,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:53:37" (2/3) ... [2018-10-24 01:53:44,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d2edc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:53:44, skipping insertion in model container [2018-10-24 01:53:44,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:53:44" (3/3) ... [2018-10-24 01:53:44,790 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label28_true-unreach-call.c [2018-10-24 01:53:44,798 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:53:44,807 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:53:44,828 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:53:44,871 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:53:44,871 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:53:44,871 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:53:44,871 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:53:44,871 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:53:44,872 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:53:44,872 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:53:44,872 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:53:44,919 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 01:53:44,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2018-10-24 01:53:44,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:53:44,933 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:53:44,935 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:53:44,940 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:53:44,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1986931573, now seen corresponding path program 1 times [2018-10-24 01:53:44,943 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:53:44,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:53:44,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:53:44,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:53:44,993 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:53:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:53:45,462 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:53:45,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:53:45,631 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:53:45,631 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:53:45,632 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:53:45,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:53:45,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:53:45,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:53:45,667 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 01:53:49,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:53:49,274 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 01:53:49,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:53:49,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2018-10-24 01:53:49,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:53:49,311 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 01:53:49,311 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 01:53:49,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:53:49,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 01:53:49,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 01:53:49,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 01:53:49,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1329 transitions. [2018-10-24 01:53:49,461 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1329 transitions. Word has length 73 [2018-10-24 01:53:49,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:53:49,462 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1329 transitions. [2018-10-24 01:53:49,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:53:49,462 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1329 transitions. [2018-10-24 01:53:49,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-24 01:53:49,473 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:53:49,474 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:53:49,474 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:53:49,475 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:53:49,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1284369448, now seen corresponding path program 1 times [2018-10-24 01:53:49,475 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:53:49,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:53:49,477 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:53:49,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:53:49,477 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:53:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:53:50,009 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:53:50,010 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:53:50,010 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:53:50,010 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:53:50,013 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:53:50,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:53:50,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:53:50,013 INFO L87 Difference]: Start difference. First operand 744 states and 1329 transitions. Second operand 6 states. [2018-10-24 01:53:57,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:53:57,649 INFO L93 Difference]: Finished difference Result 2183 states and 3908 transitions. [2018-10-24 01:53:57,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:53:57,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-10-24 01:53:57,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:53:57,664 INFO L225 Difference]: With dead ends: 2183 [2018-10-24 01:53:57,664 INFO L226 Difference]: Without dead ends: 1445 [2018-10-24 01:53:57,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:53:57,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-10-24 01:53:57,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1424. [2018-10-24 01:53:57,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1424 states. [2018-10-24 01:53:57,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 2239 transitions. [2018-10-24 01:53:57,736 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 2239 transitions. Word has length 181 [2018-10-24 01:53:57,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:53:57,736 INFO L481 AbstractCegarLoop]: Abstraction has 1424 states and 2239 transitions. [2018-10-24 01:53:57,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:53:57,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 2239 transitions. [2018-10-24 01:53:57,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-10-24 01:53:57,740 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:53:57,741 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 01:53:57,741 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:53:57,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:53:57,741 INFO L82 PathProgramCache]: Analyzing trace with hash 365122197, now seen corresponding path program 1 times [2018-10-24 01:53:57,742 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:53:57,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:53:57,743 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:53:57,743 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:53:57,743 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:53:57,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:53:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:53:58,229 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:53:58,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:53:58,230 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:53:58,231 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:53:58,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:53:58,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:53:58,231 INFO L87 Difference]: Start difference. First operand 1424 states and 2239 transitions. Second operand 6 states. [2018-10-24 01:54:02,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:54:02,457 INFO L93 Difference]: Finished difference Result 3902 states and 6351 transitions. [2018-10-24 01:54:02,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:54:02,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 184 [2018-10-24 01:54:02,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:54:02,473 INFO L225 Difference]: With dead ends: 3902 [2018-10-24 01:54:02,474 INFO L226 Difference]: Without dead ends: 2484 [2018-10-24 01:54:02,479 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:54:02,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2484 states. [2018-10-24 01:54:02,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2484 to 2474. [2018-10-24 01:54:02,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2018-10-24 01:54:02,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3744 transitions. [2018-10-24 01:54:02,551 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3744 transitions. Word has length 184 [2018-10-24 01:54:02,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:54:02,551 INFO L481 AbstractCegarLoop]: Abstraction has 2474 states and 3744 transitions. [2018-10-24 01:54:02,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:54:02,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3744 transitions. [2018-10-24 01:54:02,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2018-10-24 01:54:02,558 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:54:02,558 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:54:02,559 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:54:02,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:54:02,559 INFO L82 PathProgramCache]: Analyzing trace with hash 351973064, now seen corresponding path program 1 times [2018-10-24 01:54:02,559 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:54:02,560 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:54:02,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:54:02,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:54:02,561 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:54:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:54:02,873 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 132 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 01:54:02,874 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:54:02,874 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:54:02,875 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 301 with the following transitions: [2018-10-24 01:54:02,877 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [663], [665], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 01:54:02,945 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:54:02,945 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:54:05,858 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:54:05,859 INFO L272 AbstractInterpreter]: Visited 121 different actions 121 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 01:54:05,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:54:05,872 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:54:08,429 INFO L232 lantSequenceWeakener]: Weakened 292 states. On average, predicates are now at 78.2% of their original sizes. [2018-10-24 01:54:08,430 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:54:08,869 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:54:08,870 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:54:08,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 01:54:08,871 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:54:08,871 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 01:54:08,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 01:54:08,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:54:08,872 INFO L87 Difference]: Start difference. First operand 2474 states and 3744 transitions. Second operand 7 states. [2018-10-24 01:54:12,002 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:55:02,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:55:02,467 INFO L93 Difference]: Finished difference Result 5282 states and 7967 transitions. [2018-10-24 01:55:02,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:55:02,467 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2018-10-24 01:55:02,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:55:02,484 INFO L225 Difference]: With dead ends: 5282 [2018-10-24 01:55:02,484 INFO L226 Difference]: Without dead ends: 2814 [2018-10-24 01:55:02,492 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 300 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:55:02,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2018-10-24 01:55:02,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 2812. [2018-10-24 01:55:02,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2812 states. [2018-10-24 01:55:02,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2812 states to 2812 states and 4089 transitions. [2018-10-24 01:55:02,569 INFO L78 Accepts]: Start accepts. Automaton has 2812 states and 4089 transitions. Word has length 300 [2018-10-24 01:55:02,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:55:02,570 INFO L481 AbstractCegarLoop]: Abstraction has 2812 states and 4089 transitions. [2018-10-24 01:55:02,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 01:55:02,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2812 states and 4089 transitions. [2018-10-24 01:55:02,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-10-24 01:55:02,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:55:02,579 INFO L375 BasicCegarLoop]: trace histogram [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, 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, 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] [2018-10-24 01:55:02,579 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:55:02,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:55:02,580 INFO L82 PathProgramCache]: Analyzing trace with hash 447473451, now seen corresponding path program 1 times [2018-10-24 01:55:02,580 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:55:02,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:55:02,581 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:55:02,581 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:55:02,581 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:55:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:55:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 493 backedges. 293 proven. 110 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-10-24 01:55:02,872 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:55:02,872 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:55:02,872 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 393 with the following transitions: [2018-10-24 01:55:02,873 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [547], [555], [563], [571], [579], [587], [595], [603], [611], [619], [627], [635], [643], [651], [659], [663], [665], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [856], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 01:55:02,880 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:55:02,880 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:55:04,078 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:55:15,872 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:55:15,872 INFO L272 AbstractInterpreter]: Visited 125 different actions 481 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:55:15,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:55:15,875 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:55:20,958 INFO L232 lantSequenceWeakener]: Weakened 111 states. On average, predicates are now at 77.76% of their original sizes. [2018-10-24 01:55:20,958 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 01:57:37,528 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:57:37,533 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:57:37,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:57:37 BoogieIcfgContainer [2018-10-24 01:57:37,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:57:37,535 INFO L168 Benchmark]: Toolchain (without parser) took 240668.99 ms. Allocated memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: 2.2 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 643.8 MB. Max. memory is 7.1 GB. [2018-10-24 01:57:37,536 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:57:37,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1120.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 01:57:37,537 INFO L168 Benchmark]: Boogie Procedure Inliner took 332.31 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 732.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -844.3 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:57:37,539 INFO L168 Benchmark]: Boogie Preprocessor took 156.71 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-24 01:57:37,539 INFO L168 Benchmark]: RCFGBuilder took 6301.66 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 259.6 MB). Peak memory consumption was 259.6 MB. Max. memory is 7.1 GB. [2018-10-24 01:57:37,540 INFO L168 Benchmark]: TraceAbstraction took 232752.91 ms. Allocated memory was 2.2 GB in the beginning and 3.7 GB in the end (delta: 1.5 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 397.6 MB. Max. memory is 7.1 GB. [2018-10-24 01:57:37,547 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1120.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 332.31 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 732.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -844.3 MB). Peak memory consumption was 28.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.71 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 6301.66 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 259.6 MB). Peak memory consumption was 259.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232752.91 ms. Allocated memory was 2.2 GB in the beginning and 3.7 GB in the end (delta: 1.5 GB). Free memory was 1.9 GB in the beginning and 3.0 GB in the end (delta: -1.1 GB). Peak memory consumption was 397.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 205]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 205). Cancelled while BasicCegarLoop was analyzing trace of length 393 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 232.6s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 69.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 736 SDtfs, 4384 SDslu, 557 SDs, 0 SdLazy, 6512 SolverSat, 2197 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 41.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 325 GetRequests, 300 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2812occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 16.0s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.996458202058391 AbsIntWeakeningRatio, 0.08405797101449275 AbsIntAvgWeakeningVarsNumRemoved, 406.5840579710145 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 33 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 738 NumberOfCodeBlocks, 738 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 734 ConstructedInterpolants, 0 QuantifiedInterpolants, 524591 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 269/375 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown