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/Problem01_label47_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:15:00,963 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:15:00,965 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:15:00,979 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:15:00,979 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:15:00,980 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:15:00,982 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:15:00,984 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:15:00,985 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:15:00,986 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:15:00,990 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:15:00,991 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:15:00,992 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:15:00,993 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:15:00,995 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:15:00,996 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:15:00,999 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:15:01,006 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:15:01,008 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:15:01,013 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:15:01,015 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:15:01,020 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:15:01,026 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:15:01,048 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 17:15:01,073 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:15:01,073 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:15:01,074 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:15:01,074 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 17:15:01,074 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 17:15:01,074 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 17:15:01,074 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 17:15:01,075 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 17:15:01,075 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 17:15:01,075 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 17:15:01,075 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 17:15:01,076 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 17:15:01,076 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:15:01,077 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:15:01,077 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:15:01,077 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:15:01,077 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:15:01,077 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:15:01,078 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:15:01,078 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:15:01,078 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:15:01,078 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:15:01,078 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:15:01,079 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:15:01,079 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:15:01,079 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:15:01,079 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:15:01,080 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:15:01,080 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 17:15:01,080 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:15:01,080 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:15:01,080 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:15:01,080 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:15:01,081 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 17:15:01,149 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:15:01,168 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:15:01,172 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:15:01,174 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:15:01,174 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:15:01,175 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label47_false-unreach-call_false-termination.c [2018-10-24 17:15:01,264 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d21b28fbd/0405c73cd8bb49afa97af1f7fb875435/FLAG077d0d773 [2018-10-24 17:15:01,848 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:15:01,849 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label47_false-unreach-call_false-termination.c [2018-10-24 17:15:01,861 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d21b28fbd/0405c73cd8bb49afa97af1f7fb875435/FLAG077d0d773 [2018-10-24 17:15:01,878 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d21b28fbd/0405c73cd8bb49afa97af1f7fb875435 [2018-10-24 17:15:01,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:15:01,892 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:15:01,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:15:01,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:15:01,898 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:15:01,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:15:01" (1/1) ... [2018-10-24 17:15:01,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@777de76b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:01, skipping insertion in model container [2018-10-24 17:15:01,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:15:01" (1/1) ... [2018-10-24 17:15:01,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:15:01,967 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:15:02,399 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:15:02,414 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:15:02,540 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:15:02,563 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:15:02,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02 WrapperNode [2018-10-24 17:15:02,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:15:02,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:15:02,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:15:02,565 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:15:02,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:15:02,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:15:02,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:15:02,754 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:15:02,762 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,768 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,768 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,823 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (1/1) ... [2018-10-24 17:15:02,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:15:02,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:15:02,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:15:02,839 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:15:02,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (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 17:15:02,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 17:15:02,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 17:15:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 17:15:02,930 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 17:15:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:15:02,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:15:02,930 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 17:15:02,931 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 17:15:06,386 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:15:06,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:15:06 BoogieIcfgContainer [2018-10-24 17:15:06,387 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:15:06,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:15:06,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:15:06,392 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:15:06,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:15:01" (1/3) ... [2018-10-24 17:15:06,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a23281d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:15:06, skipping insertion in model container [2018-10-24 17:15:06,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:15:02" (2/3) ... [2018-10-24 17:15:06,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a23281d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:15:06, skipping insertion in model container [2018-10-24 17:15:06,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:15:06" (3/3) ... [2018-10-24 17:15:06,397 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label47_false-unreach-call_false-termination.c [2018-10-24 17:15:06,409 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:15:06,421 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:15:06,440 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:15:06,475 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:15:06,476 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:15:06,476 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:15:06,476 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:15:06,476 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:15:06,477 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:15:06,477 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:15:06,477 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:15:06,506 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-10-24 17:15:06,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2018-10-24 17:15:06,517 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:06,519 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, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:06,521 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:06,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:06,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1092811080, now seen corresponding path program 1 times [2018-10-24 17:15:06,530 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:06,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:06,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:06,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:06,583 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:06,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:07,154 WARN L179 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 17:15:07,286 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 17:15:07,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:07,289 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:15:07,289 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:07,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:15:07,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:15:07,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:07,315 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-10-24 17:15:09,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:09,425 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-10-24 17:15:09,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:15:09,427 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2018-10-24 17:15:09,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:09,446 INFO L225 Difference]: With dead ends: 550 [2018-10-24 17:15:09,446 INFO L226 Difference]: Without dead ends: 340 [2018-10-24 17:15:09,454 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:09,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-10-24 17:15:09,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-10-24 17:15:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-10-24 17:15:09,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 562 transitions. [2018-10-24 17:15:09,557 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 562 transitions. Word has length 80 [2018-10-24 17:15:09,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:09,559 INFO L481 AbstractCegarLoop]: Abstraction has 340 states and 562 transitions. [2018-10-24 17:15:09,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:15:09,560 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 562 transitions. [2018-10-24 17:15:09,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-24 17:15:09,568 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:09,569 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 17:15:09,571 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:09,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:09,572 INFO L82 PathProgramCache]: Analyzing trace with hash 480701735, now seen corresponding path program 1 times [2018-10-24 17:15:09,572 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:09,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:09,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:09,575 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:09,576 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:09,845 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 17:15:09,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:09,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:09,961 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:15:09,961 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:09,964 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:15:09,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:15:09,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:15:09,965 INFO L87 Difference]: Start difference. First operand 340 states and 562 transitions. Second operand 6 states. [2018-10-24 17:15:11,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:11,960 INFO L93 Difference]: Finished difference Result 888 states and 1491 transitions. [2018-10-24 17:15:11,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:15:11,960 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2018-10-24 17:15:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:11,969 INFO L225 Difference]: With dead ends: 888 [2018-10-24 17:15:11,969 INFO L226 Difference]: Without dead ends: 554 [2018-10-24 17:15:11,974 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 17:15:11,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2018-10-24 17:15:12,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 539. [2018-10-24 17:15:12,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2018-10-24 17:15:12,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 827 transitions. [2018-10-24 17:15:12,015 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 827 transitions. Word has length 91 [2018-10-24 17:15:12,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:12,015 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 827 transitions. [2018-10-24 17:15:12,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:15:12,016 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 827 transitions. [2018-10-24 17:15:12,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-24 17:15:12,020 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:12,020 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 17:15:12,020 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:12,021 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:12,021 INFO L82 PathProgramCache]: Analyzing trace with hash -900509829, now seen corresponding path program 1 times [2018-10-24 17:15:12,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:12,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:12,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:12,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:12,023 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:12,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:12,257 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:12,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:12,258 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:15:12,258 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:12,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:15:12,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:15:12,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:12,259 INFO L87 Difference]: Start difference. First operand 539 states and 827 transitions. Second operand 3 states. [2018-10-24 17:15:13,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:13,452 INFO L93 Difference]: Finished difference Result 1530 states and 2434 transitions. [2018-10-24 17:15:13,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:15:13,453 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 92 [2018-10-24 17:15:13,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:13,461 INFO L225 Difference]: With dead ends: 1530 [2018-10-24 17:15:13,461 INFO L226 Difference]: Without dead ends: 997 [2018-10-24 17:15:13,465 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:13,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2018-10-24 17:15:13,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 994. [2018-10-24 17:15:13,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 994 states. [2018-10-24 17:15:13,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 994 states to 994 states and 1454 transitions. [2018-10-24 17:15:13,512 INFO L78 Accepts]: Start accepts. Automaton has 994 states and 1454 transitions. Word has length 92 [2018-10-24 17:15:13,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:13,513 INFO L481 AbstractCegarLoop]: Abstraction has 994 states and 1454 transitions. [2018-10-24 17:15:13,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:15:13,514 INFO L276 IsEmpty]: Start isEmpty. Operand 994 states and 1454 transitions. [2018-10-24 17:15:13,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-10-24 17:15:13,520 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:13,520 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 17:15:13,520 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:13,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:13,521 INFO L82 PathProgramCache]: Analyzing trace with hash 909671971, now seen corresponding path program 1 times [2018-10-24 17:15:13,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:13,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:13,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:13,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:13,523 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:13,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:13,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:13,749 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:13,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:15:13,749 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:13,750 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:15:13,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:15:13,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:15:13,751 INFO L87 Difference]: Start difference. First operand 994 states and 1454 transitions. Second operand 4 states. [2018-10-24 17:15:17,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:17,080 INFO L93 Difference]: Finished difference Result 3376 states and 5191 transitions. [2018-10-24 17:15:17,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:15:17,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 93 [2018-10-24 17:15:17,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:17,115 INFO L225 Difference]: With dead ends: 3376 [2018-10-24 17:15:17,115 INFO L226 Difference]: Without dead ends: 2388 [2018-10-24 17:15:17,123 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:15:17,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2388 states. [2018-10-24 17:15:17,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2388 to 2388. [2018-10-24 17:15:17,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2388 states. [2018-10-24 17:15:17,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3423 transitions. [2018-10-24 17:15:17,236 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3423 transitions. Word has length 93 [2018-10-24 17:15:17,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:17,237 INFO L481 AbstractCegarLoop]: Abstraction has 2388 states and 3423 transitions. [2018-10-24 17:15:17,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:15:17,237 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3423 transitions. [2018-10-24 17:15:17,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-24 17:15:17,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:17,245 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 17:15:17,246 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:17,246 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:17,246 INFO L82 PathProgramCache]: Analyzing trace with hash 433238511, now seen corresponding path program 1 times [2018-10-24 17:15:17,246 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:17,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:17,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:17,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:17,249 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:17,562 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:17,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:17,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:15:17,563 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:17,563 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:15:17,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:15:17,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:17,565 INFO L87 Difference]: Start difference. First operand 2388 states and 3423 transitions. Second operand 3 states. [2018-10-24 17:15:18,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:18,604 INFO L93 Difference]: Finished difference Result 7070 states and 10548 transitions. [2018-10-24 17:15:18,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:15:18,608 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2018-10-24 17:15:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:18,645 INFO L225 Difference]: With dead ends: 7070 [2018-10-24 17:15:18,645 INFO L226 Difference]: Without dead ends: 4688 [2018-10-24 17:15:18,664 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:15:18,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4688 states. [2018-10-24 17:15:18,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4688 to 4688. [2018-10-24 17:15:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4688 states. [2018-10-24 17:15:18,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4688 states to 4688 states and 6621 transitions. [2018-10-24 17:15:18,852 INFO L78 Accepts]: Start accepts. Automaton has 4688 states and 6621 transitions. Word has length 98 [2018-10-24 17:15:18,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:18,852 INFO L481 AbstractCegarLoop]: Abstraction has 4688 states and 6621 transitions. [2018-10-24 17:15:18,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:15:18,853 INFO L276 IsEmpty]: Start isEmpty. Operand 4688 states and 6621 transitions. [2018-10-24 17:15:18,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 17:15:18,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:18,863 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:15:18,864 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:18,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:18,864 INFO L82 PathProgramCache]: Analyzing trace with hash 1885605347, now seen corresponding path program 1 times [2018-10-24 17:15:18,864 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:18,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:18,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:18,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:18,866 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:19,116 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 17:15:19,167 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:19,168 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:15:19,168 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:15:19,168 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:15:19,169 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:15:19,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:15:19,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:15:19,170 INFO L87 Difference]: Start difference. First operand 4688 states and 6621 transitions. Second operand 6 states. [2018-10-24 17:15:20,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:15:20,240 INFO L93 Difference]: Finished difference Result 8749 states and 12593 transitions. [2018-10-24 17:15:20,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:15:20,241 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-10-24 17:15:20,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:15:20,265 INFO L225 Difference]: With dead ends: 8749 [2018-10-24 17:15:20,265 INFO L226 Difference]: Without dead ends: 4067 [2018-10-24 17:15:20,296 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 17:15:20,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4067 states. [2018-10-24 17:15:20,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4067 to 4001. [2018-10-24 17:15:20,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4001 states. [2018-10-24 17:15:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4001 states to 4001 states and 5002 transitions. [2018-10-24 17:15:20,430 INFO L78 Accepts]: Start accepts. Automaton has 4001 states and 5002 transitions. Word has length 125 [2018-10-24 17:15:20,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:15:20,431 INFO L481 AbstractCegarLoop]: Abstraction has 4001 states and 5002 transitions. [2018-10-24 17:15:20,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:15:20,431 INFO L276 IsEmpty]: Start isEmpty. Operand 4001 states and 5002 transitions. [2018-10-24 17:15:20,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 17:15:20,440 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:15:20,440 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:15:20,440 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:15:20,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:20,441 INFO L82 PathProgramCache]: Analyzing trace with hash 832089744, now seen corresponding path program 1 times [2018-10-24 17:15:20,441 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:15:20,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:20,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:15:20,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:15:20,445 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:15:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:15:20,741 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:15:20,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:15:20,742 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 17:15:20,744 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 138 with the following transitions: [2018-10-24 17:15:20,746 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [149], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [277], [279], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-10-24 17:15:20,848 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 17:15:20,848 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 17:15:57,528 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 17:15:57,530 INFO L272 AbstractInterpreter]: Visited 84 different actions 149 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-10-24 17:15:57,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:15:57,538 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 17:16:04,034 INFO L232 lantSequenceWeakener]: Weakened 104 states. On average, predicates are now at 80.24% of their original sizes. [2018-10-24 17:16:04,035 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 17:16:26,985 INFO L413 sIntCurrentIteration]: We have 136 unified AI predicates [2018-10-24 17:16:26,985 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 17:16:26,986 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:16:26,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-10-24 17:16:26,986 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:16:26,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 17:16:26,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 17:16:26,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2018-10-24 17:16:26,988 INFO L87 Difference]: Start difference. First operand 4001 states and 5002 transitions. Second operand 19 states. Received shutdown request... [2018-10-24 17:19:18,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-24 17:19:18,635 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:19:18,642 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:19:18,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:19:18 BoogieIcfgContainer [2018-10-24 17:19:18,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:19:18,644 INFO L168 Benchmark]: Toolchain (without parser) took 256752.46 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -213.5 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 17:19:18,645 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:19:18,645 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:18,646 INFO L168 Benchmark]: Boogie Procedure Inliner took 188.38 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -788.6 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:18,647 INFO L168 Benchmark]: Boogie Preprocessor took 85.35 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:19:18,648 INFO L168 Benchmark]: RCFGBuilder took 3548.54 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.3 MB). Peak memory consumption was 118.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:19:18,651 INFO L168 Benchmark]: TraceAbstraction took 252254.04 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 425.1 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 17:19:18,658 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 670.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 188.38 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 723.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -788.6 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.35 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3548.54 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 118.3 MB). Peak memory consumption was 118.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 252254.04 ms. Allocated memory was 2.2 GB in the beginning and 4.2 GB in the end (delta: 2.0 GB). Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 425.1 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 395]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 395). Cancelled while BasicCegarLoop was constructing difference of abstraction (4001states) and FLOYD_HOARE automaton (currently 21 states, 19 states before enhancement),while ReachableStatesComputation was computing reachable states (582 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 252.1s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 182.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1028 SDtfs, 2382 SDslu, 401 SDs, 0 SdLazy, 4419 SolverSat, 927 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 75.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 188 GetRequests, 133 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 41.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4688occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 36.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9934925189588031 AbsIntWeakeningRatio, 0.25735294117647056 AbsIntAvgWeakeningVarsNumRemoved, 655.2573529411765 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 84 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 716 NumberOfCodeBlocks, 716 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 709 ConstructedInterpolants, 0 QuantifiedInterpolants, 214636 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 145/147 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown