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/Problem13_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:25:00,909 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:25:00,911 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:25:00,927 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:25:00,927 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:25:00,930 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:25:00,931 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:25:00,933 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:25:00,936 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:25:00,938 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:25:00,940 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:25:00,941 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:25:00,942 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:25:00,943 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:25:00,945 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:25:00,945 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:25:00,946 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:25:00,948 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:25:00,950 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:25:00,952 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:25:00,953 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:25:00,954 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:25:00,956 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:25:00,965 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 01:25:00,981 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:25:00,981 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:25:00,982 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:25:00,982 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:25:00,982 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:25:00,983 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:25:00,983 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:25:00,983 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:25:00,983 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:25:00,983 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:25:00,984 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:25:00,984 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:25:00,985 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:25:00,985 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:25:00,985 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:25:00,985 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:25:00,985 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:25:00,986 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:25:00,986 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:25:00,986 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:25:00,986 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:25:00,986 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:25:00,987 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:25:00,987 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:25:00,987 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:25:00,987 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:25:00,987 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:25:00,988 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:25:00,988 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:25:00,988 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:25:00,988 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:25:00,988 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:25:00,988 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:25:00,989 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:25:01,032 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:25:01,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:25:01,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:25:01,051 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:25:01,051 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:25:01,052 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label18_true-unreach-call.c [2018-10-24 01:25:01,125 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/816b6626a/d53fc5130a4c433d89b881ec8c128792/FLAG60c86c6dd [2018-10-24 01:25:01,924 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:25:01,925 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label18_true-unreach-call.c [2018-10-24 01:25:01,959 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/816b6626a/d53fc5130a4c433d89b881ec8c128792/FLAG60c86c6dd [2018-10-24 01:25:01,979 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/816b6626a/d53fc5130a4c433d89b881ec8c128792 [2018-10-24 01:25:01,992 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:25:01,995 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:25:01,996 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:25:01,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:25:02,006 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:25:02,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:25:01" (1/1) ... [2018-10-24 01:25:02,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc1ab2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:25:02, skipping insertion in model container [2018-10-24 01:25:02,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:25:01" (1/1) ... [2018-10-24 01:25:02,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:25:02,227 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:25:03,728 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:25:03,733 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:25:04,480 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:25:04,525 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:25:04,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:25:04 WrapperNode [2018-10-24 01:25:04,526 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:25:04,527 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:25:04,527 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:25:04,527 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:25:04,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:25:04" (1/1) ... [2018-10-24 01:25:04,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:25:04" (1/1) ... [2018-10-24 01:25:05,104 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:25:05,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:25:05,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:25:05,105 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:25:05,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:25:04" (1/1) ... [2018-10-24 01:25:05,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:25:04" (1/1) ... [2018-10-24 01:25:05,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:25:04" (1/1) ... [2018-10-24 01:25:05,141 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:25:04" (1/1) ... [2018-10-24 01:25:05,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:25:04" (1/1) ... [2018-10-24 01:25:05,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:25:04" (1/1) ... [2018-10-24 01:25:05,335 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:25:04" (1/1) ... [2018-10-24 01:25:05,378 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:25:05,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:25:05,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:25:05,379 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:25:05,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:25:04" (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 01:25:05,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:25:05,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:25:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 01:25:05,456 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 01:25:05,456 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 01:25:05,456 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 01:25:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:25:05,457 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:25:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:25:05,457 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:25:05,457 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:25:05,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:25:05,458 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:25:05,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:25:17,023 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:25:17,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:25:17 BoogieIcfgContainer [2018-10-24 01:25:17,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:25:17,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:25:17,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:25:17,029 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:25:17,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:25:01" (1/3) ... [2018-10-24 01:25:17,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bf9fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:25:17, skipping insertion in model container [2018-10-24 01:25:17,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:25:04" (2/3) ... [2018-10-24 01:25:17,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69bf9fa2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:25:17, skipping insertion in model container [2018-10-24 01:25:17,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:25:17" (3/3) ... [2018-10-24 01:25:17,033 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label18_true-unreach-call.c [2018-10-24 01:25:17,043 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:25:17,053 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:25:17,071 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:25:17,119 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:25:17,119 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:25:17,119 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:25:17,120 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:25:17,120 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:25:17,120 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:25:17,120 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:25:17,120 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:25:17,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-10-24 01:25:17,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-10-24 01:25:17,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:25:17,176 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] [2018-10-24 01:25:17,179 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:25:17,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:25:17,185 INFO L82 PathProgramCache]: Analyzing trace with hash -856257052, now seen corresponding path program 1 times [2018-10-24 01:25:17,188 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:25:17,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:25:17,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:25:17,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:25:17,248 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:25:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:25:17,707 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:25:17,830 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 01:25:17,833 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:25:17,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:25:17,834 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:25:17,841 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:25:17,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:25:17,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:25:17,864 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-10-24 01:25:27,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:25:27,828 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-10-24 01:25:27,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:25:27,832 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-10-24 01:25:27,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:25:27,869 INFO L225 Difference]: With dead ends: 3097 [2018-10-24 01:25:27,869 INFO L226 Difference]: Without dead ends: 1975 [2018-10-24 01:25:27,881 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 01:25:27,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-10-24 01:25:28,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-10-24 01:25:28,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-10-24 01:25:28,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-10-24 01:25:28,042 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 70 [2018-10-24 01:25:28,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:25:28,046 INFO L481 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-10-24 01:25:28,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:25:28,046 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-10-24 01:25:28,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 01:25:28,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:25:28,056 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, 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 01:25:28,057 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:25:28,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:25:28,057 INFO L82 PathProgramCache]: Analyzing trace with hash -410471564, now seen corresponding path program 1 times [2018-10-24 01:25:28,057 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:25:28,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:25:28,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:25:28,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:25:28,059 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:25:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:25:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:25:28,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:25:28,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:25:28,347 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:25:28,349 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:25:28,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:25:28,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:25:28,350 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-10-24 01:25:49,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:25:49,224 INFO L93 Difference]: Finished difference Result 5736 states and 9691 transitions. [2018-10-24 01:25:49,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:25:49,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-10-24 01:25:49,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:25:49,256 INFO L225 Difference]: With dead ends: 5736 [2018-10-24 01:25:49,256 INFO L226 Difference]: Without dead ends: 3768 [2018-10-24 01:25:49,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:25:49,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3768 states. [2018-10-24 01:25:49,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3768 to 3686. [2018-10-24 01:25:49,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3686 states. [2018-10-24 01:25:49,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3686 states to 3686 states and 5660 transitions. [2018-10-24 01:25:49,404 INFO L78 Accepts]: Start accepts. Automaton has 3686 states and 5660 transitions. Word has length 146 [2018-10-24 01:25:49,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:25:49,405 INFO L481 AbstractCegarLoop]: Abstraction has 3686 states and 5660 transitions. [2018-10-24 01:25:49,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:25:49,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3686 states and 5660 transitions. [2018-10-24 01:25:49,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-10-24 01:25:49,418 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:25:49,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:25:49,419 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:25:49,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:25:49,419 INFO L82 PathProgramCache]: Analyzing trace with hash 586688088, now seen corresponding path program 1 times [2018-10-24 01:25:49,419 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:25:49,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:25:49,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:25:49,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:25:49,421 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:25:49,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:25:49,666 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:25:49,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:25:49,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:25:49,667 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:25:49,668 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:25:49,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:25:49,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:25:49,669 INFO L87 Difference]: Start difference. First operand 3686 states and 5660 transitions. Second operand 5 states. [2018-10-24 01:26:17,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:26:17,718 INFO L93 Difference]: Finished difference Result 13666 states and 21764 transitions. [2018-10-24 01:26:17,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:26:17,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2018-10-24 01:26:17,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:26:17,783 INFO L225 Difference]: With dead ends: 13666 [2018-10-24 01:26:17,784 INFO L226 Difference]: Without dead ends: 9986 [2018-10-24 01:26:17,809 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:26:17,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9986 states. [2018-10-24 01:26:18,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9986 to 9796. [2018-10-24 01:26:18,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9796 states. [2018-10-24 01:26:18,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9796 states to 9796 states and 14504 transitions. [2018-10-24 01:26:18,060 INFO L78 Accepts]: Start accepts. Automaton has 9796 states and 14504 transitions. Word has length 160 [2018-10-24 01:26:18,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:26:18,061 INFO L481 AbstractCegarLoop]: Abstraction has 9796 states and 14504 transitions. [2018-10-24 01:26:18,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:26:18,061 INFO L276 IsEmpty]: Start isEmpty. Operand 9796 states and 14504 transitions. [2018-10-24 01:26:18,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-10-24 01:26:18,068 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:26:18,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:18,069 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:26:18,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:26:18,069 INFO L82 PathProgramCache]: Analyzing trace with hash 154081844, now seen corresponding path program 1 times [2018-10-24 01:26:18,069 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:26:18,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:26:18,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:26:18,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:26:18,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:26:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:26:18,408 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:26:18,817 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:26:18,817 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:26:18,818 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:26:18,818 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:26:18,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:26:18,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:26:18,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:26:18,819 INFO L87 Difference]: Start difference. First operand 9796 states and 14504 transitions. Second operand 6 states. [2018-10-24 01:26:36,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:26:36,986 INFO L93 Difference]: Finished difference Result 34193 states and 53815 transitions. [2018-10-24 01:26:36,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:26:36,990 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2018-10-24 01:26:36,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:26:37,130 INFO L225 Difference]: With dead ends: 34193 [2018-10-24 01:26:37,130 INFO L226 Difference]: Without dead ends: 24403 [2018-10-24 01:26:37,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:26:37,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24403 states. [2018-10-24 01:26:37,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24403 to 24170. [2018-10-24 01:26:37,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24170 states. [2018-10-24 01:26:37,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24170 states to 24170 states and 34075 transitions. [2018-10-24 01:26:37,846 INFO L78 Accepts]: Start accepts. Automaton has 24170 states and 34075 transitions. Word has length 178 [2018-10-24 01:26:37,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:26:37,847 INFO L481 AbstractCegarLoop]: Abstraction has 24170 states and 34075 transitions. [2018-10-24 01:26:37,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:26:37,847 INFO L276 IsEmpty]: Start isEmpty. Operand 24170 states and 34075 transitions. [2018-10-24 01:26:37,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2018-10-24 01:26:37,857 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:26:37,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:37,858 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:26:37,858 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:26:37,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1234851793, now seen corresponding path program 1 times [2018-10-24 01:26:37,858 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:26:37,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:26:37,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:26:37,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:26:37,861 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:26:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:26:38,147 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:26:38,202 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:26:38,202 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:26:38,203 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:26:38,203 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:26:38,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:26:38,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:26:38,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:26:38,204 INFO L87 Difference]: Start difference. First operand 24170 states and 34075 transitions. Second operand 6 states. [2018-10-24 01:26:49,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:26:49,931 INFO L93 Difference]: Finished difference Result 62339 states and 97863 transitions. [2018-10-24 01:26:49,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:26:49,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2018-10-24 01:26:49,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:26:50,122 INFO L225 Difference]: With dead ends: 62339 [2018-10-24 01:26:50,123 INFO L226 Difference]: Without dead ends: 38175 [2018-10-24 01:26:50,184 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:26:50,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38175 states. [2018-10-24 01:26:51,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38175 to 37978. [2018-10-24 01:26:51,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37978 states. [2018-10-24 01:26:51,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37978 states to 37978 states and 54437 transitions. [2018-10-24 01:26:51,178 INFO L78 Accepts]: Start accepts. Automaton has 37978 states and 54437 transitions. Word has length 189 [2018-10-24 01:26:51,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:26:51,179 INFO L481 AbstractCegarLoop]: Abstraction has 37978 states and 54437 transitions. [2018-10-24 01:26:51,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:26:51,179 INFO L276 IsEmpty]: Start isEmpty. Operand 37978 states and 54437 transitions. [2018-10-24 01:26:51,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2018-10-24 01:26:51,189 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:26:51,190 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:51,190 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:26:51,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:26:51,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1204068448, now seen corresponding path program 1 times [2018-10-24 01:26:51,191 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:26:51,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:26:51,192 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:26:51,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:26:51,192 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:26:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:26:51,485 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:26:51,634 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:26:51,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:26:51,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:26:51,635 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:26:51,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:26:51,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:26:51,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:26:51,636 INFO L87 Difference]: Start difference. First operand 37978 states and 54437 transitions. Second operand 6 states. [2018-10-24 01:27:01,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:27:01,725 INFO L93 Difference]: Finished difference Result 83934 states and 123833 transitions. [2018-10-24 01:27:01,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:27:01,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2018-10-24 01:27:01,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:27:01,918 INFO L225 Difference]: With dead ends: 83934 [2018-10-24 01:27:01,918 INFO L226 Difference]: Without dead ends: 45962 [2018-10-24 01:27:02,024 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 01:27:02,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45962 states. [2018-10-24 01:27:02,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45962 to 45860. [2018-10-24 01:27:02,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45860 states. [2018-10-24 01:27:03,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45860 states to 45860 states and 62659 transitions. [2018-10-24 01:27:03,070 INFO L78 Accepts]: Start accepts. Automaton has 45860 states and 62659 transitions. Word has length 217 [2018-10-24 01:27:03,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:27:03,070 INFO L481 AbstractCegarLoop]: Abstraction has 45860 states and 62659 transitions. [2018-10-24 01:27:03,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:27:03,071 INFO L276 IsEmpty]: Start isEmpty. Operand 45860 states and 62659 transitions. [2018-10-24 01:27:03,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-10-24 01:27:03,094 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:27:03,094 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:27:03,095 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:27:03,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:27:03,095 INFO L82 PathProgramCache]: Analyzing trace with hash 171861938, now seen corresponding path program 1 times [2018-10-24 01:27:03,095 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:27:03,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:27:03,096 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:27:03,096 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:27:03,096 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:27:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:27:03,400 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:27:03,401 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:27:03,401 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:27:03,402 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 268 with the following transitions: [2018-10-24 01:27:03,405 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3067], [3075], [3083], [3087], [3089], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3358], [3361], [3365], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-10-24 01:27:03,481 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:27:03,482 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:27:11,371 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:27:11,373 INFO L272 AbstractInterpreter]: Visited 124 different actions 124 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 01:27:11,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:27:11,379 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:27:16,851 INFO L232 lantSequenceWeakener]: Weakened 244 states. On average, predicates are now at 71.93% of their original sizes. [2018-10-24 01:27:16,851 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:27:18,789 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:27:18,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:27:18,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-10-24 01:27:18,790 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:27:18,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 01:27:18,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 01:27:18,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 01:27:18,792 INFO L87 Difference]: Start difference. First operand 45860 states and 62659 transitions. Second operand 11 states. [2018-10-24 01:27:57,151 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 01:28:46,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 01:28:46,108 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:28:46,114 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:28:46,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:28:46 BoogieIcfgContainer [2018-10-24 01:28:46,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:28:46,115 INFO L168 Benchmark]: Toolchain (without parser) took 224122.07 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 967.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:28:46,116 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:28:46,117 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2529.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:28:46,118 INFO L168 Benchmark]: Boogie Procedure Inliner took 577.10 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 831.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-24 01:28:46,119 INFO L168 Benchmark]: Boogie Preprocessor took 274.30 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 7.1 GB. [2018-10-24 01:28:46,120 INFO L168 Benchmark]: RCFGBuilder took 11645.81 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 182.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 657.5 MB. Max. memory is 7.1 GB. [2018-10-24 01:28:46,121 INFO L168 Benchmark]: TraceAbstraction took 209088.49 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.2 GB in the end (delta: -957.2 MB). Peak memory consumption was 747.3 MB. Max. memory is 7.1 GB. [2018-10-24 01:28:46,131 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 2529.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 577.10 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 831.0 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 274.30 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 44.2 MB). Peak memory consumption was 44.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11645.81 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 182.5 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.4 MB). Peak memory consumption was 657.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209088.49 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.2 GB in the beginning and 3.2 GB in the end (delta: -957.2 MB). Peak memory consumption was 747.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 201]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 201). Cancelled while BasicCegarLoop was constructing difference of abstraction (45860states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (1269 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 209.0s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 187.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2967 SDtfs, 21270 SDslu, 3253 SDs, 0 SdLazy, 34407 SolverSat, 8105 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 140.1s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 323 GetRequests, 271 SyntacticMatches, 5 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45860occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 7.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9965066512434932 AbsIntWeakeningRatio, 0.11278195488721804 AbsIntAvgWeakeningVarsNumRemoved, 23.394736842105264 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 3.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 805 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 1227 NumberOfCodeBlocks, 1227 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1220 ConstructedInterpolants, 0 QuantifiedInterpolants, 757932 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 515/517 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown