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/Problem18_label00_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:56:58,062 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:56:58,064 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:56:58,082 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:56:58,082 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:56:58,083 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:56:58,085 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:56:58,087 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:56:58,090 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:56:58,092 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:56:58,093 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:56:58,096 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:56:58,097 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:56:58,100 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:56:58,101 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:56:58,102 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:56:58,103 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:56:58,105 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:56:58,107 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:56:58,108 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:56:58,109 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:56:58,111 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:56:58,113 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 18:56:58,119 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:56:58,119 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:56:58,120 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:56:58,121 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:56:58,121 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 18:56:58,137 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:56:58,137 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:56:58,138 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:56:58,138 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:56:58,139 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:56:58,139 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:56:58,139 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:56:58,139 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:56:58,139 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:56:58,140 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:56:58,140 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:56:58,140 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:56:58,141 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:56:58,141 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:56:58,141 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:56:58,141 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:56:58,141 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:56:58,142 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:56:58,142 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:56:58,142 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:56:58,142 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:56:58,142 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:56:58,143 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:56:58,143 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:56:58,143 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:56:58,143 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:56:58,143 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:56:58,144 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:56:58,144 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:56:58,144 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:56:58,144 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:56:58,144 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:56:58,145 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:56:58,145 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:56:58,195 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:56:58,210 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:56:58,215 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:56:58,217 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:56:58,218 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:56:58,218 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label00_false-unreach-call.c [2018-10-24 18:56:58,287 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4cf014d5f/6cbf7730ef2c4de494d01f18dc930c62/FLAGe009a800a [2018-10-24 18:56:58,992 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:56:58,993 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label00_false-unreach-call.c [2018-10-24 18:56:59,022 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4cf014d5f/6cbf7730ef2c4de494d01f18dc930c62/FLAGe009a800a [2018-10-24 18:56:59,046 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4cf014d5f/6cbf7730ef2c4de494d01f18dc930c62 [2018-10-24 18:56:59,059 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:56:59,062 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:56:59,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:56:59,064 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:56:59,074 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:56:59,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:56:59" (1/1) ... [2018-10-24 18:56:59,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ce1be01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:56:59, skipping insertion in model container [2018-10-24 18:56:59,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:56:59" (1/1) ... [2018-10-24 18:56:59,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:56:59,237 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:57:00,309 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:57:00,316 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:57:00,796 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:57:00,830 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:57:00,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:00 WrapperNode [2018-10-24 18:57:00,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:57:00,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:57:00,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:57:00,833 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:57:00,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:00" (1/1) ... [2018-10-24 18:57:00,910 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:00" (1/1) ... [2018-10-24 18:57:01,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:57:01,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:57:01,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:57:01,259 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:57:01,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:00" (1/1) ... [2018-10-24 18:57:01,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:00" (1/1) ... [2018-10-24 18:57:01,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:00" (1/1) ... [2018-10-24 18:57:01,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:00" (1/1) ... [2018-10-24 18:57:01,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:00" (1/1) ... [2018-10-24 18:57:01,442 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:00" (1/1) ... [2018-10-24 18:57:01,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:00" (1/1) ... [2018-10-24 18:57:01,526 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:57:01,526 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:57:01,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:57:01,527 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:57:01,528 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:00" (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 18:57:01,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:57:01,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:57:01,596 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 18:57:01,597 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 18:57:01,597 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 18:57:01,597 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 18:57:01,597 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:57:01,597 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:57:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:57:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:57:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:57:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:57:09,755 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:57:09,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:57:09 BoogieIcfgContainer [2018-10-24 18:57:09,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:57:09,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:57:09,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:57:09,761 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:57:09,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:56:59" (1/3) ... [2018-10-24 18:57:09,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be41f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:57:09, skipping insertion in model container [2018-10-24 18:57:09,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:57:00" (2/3) ... [2018-10-24 18:57:09,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be41f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:57:09, skipping insertion in model container [2018-10-24 18:57:09,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:57:09" (3/3) ... [2018-10-24 18:57:09,766 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label00_false-unreach-call.c [2018-10-24 18:57:09,776 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:57:09,786 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:57:09,805 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:57:09,870 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:57:09,870 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:57:09,870 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:57:09,871 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:57:09,871 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:57:09,871 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:57:09,871 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:57:09,871 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:57:09,915 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-10-24 18:57:09,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-24 18:57:09,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:57:09,933 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:57:09,936 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:57:09,942 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:57:09,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1170183564, now seen corresponding path program 1 times [2018-10-24 18:57:09,945 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:57:09,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:09,999 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:57:09,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:10,000 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:57:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:57:10,342 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:57:10,459 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 18:57:10,461 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:57:10,462 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 18:57:10,466 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:57:10,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 18:57:10,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 18:57:10,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 18:57:10,498 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 3 states. [2018-10-24 18:57:17,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:57:17,392 INFO L93 Difference]: Finished difference Result 2251 states and 4322 transitions. [2018-10-24 18:57:17,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 18:57:17,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-10-24 18:57:17,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:57:17,430 INFO L225 Difference]: With dead ends: 2251 [2018-10-24 18:57:17,430 INFO L226 Difference]: Without dead ends: 1474 [2018-10-24 18:57:17,445 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 18:57:17,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2018-10-24 18:57:17,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2018-10-24 18:57:17,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-10-24 18:57:17,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2715 transitions. [2018-10-24 18:57:17,591 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2715 transitions. Word has length 26 [2018-10-24 18:57:17,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:57:17,592 INFO L481 AbstractCegarLoop]: Abstraction has 1474 states and 2715 transitions. [2018-10-24 18:57:17,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 18:57:17,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2715 transitions. [2018-10-24 18:57:17,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-10-24 18:57:17,601 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:57:17,602 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:57:17,603 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:57:17,604 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:57:17,604 INFO L82 PathProgramCache]: Analyzing trace with hash -246185793, now seen corresponding path program 1 times [2018-10-24 18:57:17,604 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:57:17,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:17,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:57:17,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:17,607 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:57:17,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:57:17,882 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:57:17,883 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:57:17,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 18:57:17,883 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:57:17,885 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 18:57:17,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 18:57:17,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 18:57:17,886 INFO L87 Difference]: Start difference. First operand 1474 states and 2715 transitions. Second operand 5 states. [2018-10-24 18:57:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:57:26,696 INFO L93 Difference]: Finished difference Result 4419 states and 8226 transitions. [2018-10-24 18:57:26,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:57:26,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 97 [2018-10-24 18:57:26,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:57:26,716 INFO L225 Difference]: With dead ends: 4419 [2018-10-24 18:57:26,717 INFO L226 Difference]: Without dead ends: 2951 [2018-10-24 18:57:26,722 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:57:26,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2951 states. [2018-10-24 18:57:26,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2951 to 2925. [2018-10-24 18:57:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2925 states. [2018-10-24 18:57:26,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4901 transitions. [2018-10-24 18:57:26,813 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4901 transitions. Word has length 97 [2018-10-24 18:57:26,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:57:26,814 INFO L481 AbstractCegarLoop]: Abstraction has 2925 states and 4901 transitions. [2018-10-24 18:57:26,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 18:57:26,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4901 transitions. [2018-10-24 18:57:26,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-24 18:57:26,818 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:57:26,819 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:57:26,819 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:57:26,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:57:26,819 INFO L82 PathProgramCache]: Analyzing trace with hash 424888758, now seen corresponding path program 1 times [2018-10-24 18:57:26,820 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:57:26,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:26,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:57:26,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:26,821 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:57:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:57:27,057 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:57:27,058 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:57:27,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 18:57:27,058 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:57:27,059 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 18:57:27,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 18:57:27,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 18:57:27,059 INFO L87 Difference]: Start difference. First operand 2925 states and 4901 transitions. Second operand 6 states. [2018-10-24 18:57:40,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:57:40,895 INFO L93 Difference]: Finished difference Result 11200 states and 19606 transitions. [2018-10-24 18:57:40,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-24 18:57:40,904 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-24 18:57:40,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:57:40,963 INFO L225 Difference]: With dead ends: 11200 [2018-10-24 18:57:40,963 INFO L226 Difference]: Without dead ends: 8281 [2018-10-24 18:57:40,995 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 18:57:41,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8281 states. [2018-10-24 18:57:41,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8281 to 8201. [2018-10-24 18:57:41,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8201 states. [2018-10-24 18:57:41,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8201 states to 8201 states and 12122 transitions. [2018-10-24 18:57:41,275 INFO L78 Accepts]: Start accepts. Automaton has 8201 states and 12122 transitions. Word has length 102 [2018-10-24 18:57:41,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:57:41,276 INFO L481 AbstractCegarLoop]: Abstraction has 8201 states and 12122 transitions. [2018-10-24 18:57:41,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 18:57:41,276 INFO L276 IsEmpty]: Start isEmpty. Operand 8201 states and 12122 transitions. [2018-10-24 18:57:41,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-24 18:57:41,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:57:41,279 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 18:57:41,279 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:57:41,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:57:41,280 INFO L82 PathProgramCache]: Analyzing trace with hash -778397718, now seen corresponding path program 1 times [2018-10-24 18:57:41,280 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:57:41,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:41,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:57:41,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:41,281 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:57:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:57:41,534 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:57:41,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:57:41,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:57:41,534 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:57:41,535 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:57:41,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:57:41,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:57:41,536 INFO L87 Difference]: Start difference. First operand 8201 states and 12122 transitions. Second operand 4 states. [2018-10-24 18:57:48,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:57:48,929 INFO L93 Difference]: Finished difference Result 29374 states and 46971 transitions. [2018-10-24 18:57:48,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:57:48,933 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2018-10-24 18:57:48,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:57:49,055 INFO L225 Difference]: With dead ends: 29374 [2018-10-24 18:57:49,055 INFO L226 Difference]: Without dead ends: 21179 [2018-10-24 18:57:49,128 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 18:57:49,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21179 states. [2018-10-24 18:57:49,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21179 to 21179. [2018-10-24 18:57:49,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21179 states. [2018-10-24 18:57:49,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21179 states to 21179 states and 31625 transitions. [2018-10-24 18:57:49,778 INFO L78 Accepts]: Start accepts. Automaton has 21179 states and 31625 transitions. Word has length 124 [2018-10-24 18:57:49,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:57:49,779 INFO L481 AbstractCegarLoop]: Abstraction has 21179 states and 31625 transitions. [2018-10-24 18:57:49,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:57:49,779 INFO L276 IsEmpty]: Start isEmpty. Operand 21179 states and 31625 transitions. [2018-10-24 18:57:49,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2018-10-24 18:57:49,793 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:57:49,793 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:57:49,798 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:57:49,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:57:49,799 INFO L82 PathProgramCache]: Analyzing trace with hash -186406688, now seen corresponding path program 1 times [2018-10-24 18:57:49,799 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:57:49,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:49,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:57:49,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:57:49,800 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:57:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:57:50,104 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 18:57:50,352 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 38 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:57:50,353 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:57:50,353 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:57:50,354 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 223 with the following transitions: [2018-10-24 18:57:50,357 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1731], [1733], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2340], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 18:57:50,436 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:57:50,436 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:57:53,769 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:57:53,771 INFO L272 AbstractInterpreter]: Visited 131 different actions 131 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:57:53,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:57:53,782 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:57:55,608 INFO L232 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 77.53% of their original sizes. [2018-10-24 18:57:55,608 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:57:56,041 INFO L413 sIntCurrentIteration]: We have 221 unified AI predicates [2018-10-24 18:57:56,042 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:57:56,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:57:56,046 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-10-24 18:57:56,047 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:57:56,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:57:56,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:57:56,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:57:56,048 INFO L87 Difference]: Start difference. First operand 21179 states and 31625 transitions. Second operand 7 states. [2018-10-24 18:57:59,878 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:59:37,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:59:37,456 INFO L93 Difference]: Finished difference Result 43057 states and 64090 transitions. [2018-10-24 18:59:37,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:59:37,457 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 222 [2018-10-24 18:59:37,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:59:37,558 INFO L225 Difference]: With dead ends: 43057 [2018-10-24 18:59:37,559 INFO L226 Difference]: Without dead ends: 21884 [2018-10-24 18:59:37,632 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 222 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 18:59:37,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21884 states. [2018-10-24 18:59:38,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21884 to 21882. [2018-10-24 18:59:38,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21882 states. [2018-10-24 18:59:38,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21882 states to 21882 states and 32340 transitions. [2018-10-24 18:59:38,212 INFO L78 Accepts]: Start accepts. Automaton has 21882 states and 32340 transitions. Word has length 222 [2018-10-24 18:59:38,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:59:38,213 INFO L481 AbstractCegarLoop]: Abstraction has 21882 states and 32340 transitions. [2018-10-24 18:59:38,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:59:38,214 INFO L276 IsEmpty]: Start isEmpty. Operand 21882 states and 32340 transitions. [2018-10-24 18:59:38,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-10-24 18:59:38,231 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:59:38,231 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 18:59:38,232 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:59:38,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:59:38,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1943607165, now seen corresponding path program 1 times [2018-10-24 18:59:38,233 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:59:38,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:59:38,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:59:38,234 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:59:38,234 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:59:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:59:39,029 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:59:39,751 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 116 proven. 202 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:59:39,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:59:39,752 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:59:39,752 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 410 with the following transitions: [2018-10-24 18:59:39,753 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1731], [1733], [1736], [1744], [1752], [1760], [1768], [1776], [1784], [1792], [1800], [1808], [1816], [1824], [1832], [1840], [1848], [1856], [1864], [1872], [1880], [1888], [1896], [1904], [1912], [1920], [1928], [1936], [1944], [1952], [1960], [1968], [1976], [1984], [1992], [2000], [2008], [2016], [2024], [2032], [2040], [2048], [2056], [2064], [2072], [2080], [2088], [2096], [2104], [2112], [2116], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2329], [2333], [2337], [2340], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-10-24 18:59:39,762 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:59:39,762 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:59:50,970 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:59:50,970 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:59:50,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:59:50,981 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:59:54,929 INFO L232 lantSequenceWeakener]: Weakened 119 states. On average, predicates are now at 77.99% of their original sizes. [2018-10-24 18:59:54,930 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:00:45,502 INFO L413 sIntCurrentIteration]: We have 408 unified AI predicates [2018-10-24 19:00:45,503 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:00:45,504 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:00:45,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [11] total 26 [2018-10-24 19:00:45,504 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:00:45,505 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 19:00:45,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 19:00:45,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2018-10-24 19:00:45,507 INFO L87 Difference]: Start difference. First operand 21882 states and 32340 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 19:00:50,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:00:50,069 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:00:50,074 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:00:50,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:00:50 BoogieIcfgContainer [2018-10-24 19:00:50,074 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:00:50,075 INFO L168 Benchmark]: Toolchain (without parser) took 231014.04 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -166.4 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 19:00:50,076 INFO L168 Benchmark]: CDTParser took 0.26 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 19:00:50,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1768.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:00:50,077 INFO L168 Benchmark]: Boogie Procedure Inliner took 425.82 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -945.1 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. [2018-10-24 19:00:50,079 INFO L168 Benchmark]: Boogie Preprocessor took 267.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2018-10-24 19:00:50,079 INFO L168 Benchmark]: RCFGBuilder took 8230.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 522.3 MB). Peak memory consumption was 522.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:00:50,080 INFO L168 Benchmark]: TraceAbstraction took 220316.50 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 94.2 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 19:00:50,090 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 1768.45 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 148.0 MB). Peak memory consumption was 148.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 425.82 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 768.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -945.1 MB). Peak memory consumption was 45.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 267.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8230.14 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 522.3 MB). Peak memory consumption was 522.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 220316.50 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 1.6 GB in the end (delta: 94.2 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 66]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 66). Cancelled while BasicCegarLoop was constructing difference of abstraction (21882states) and FLOYD_HOARE automaton (currently 9 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (15 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 775 locations, 1 error locations. TIMEOUT Result, 220.2s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 143.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2165 SDtfs, 9340 SDslu, 859 SDs, 0 SdLazy, 19549 SolverSat, 5197 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 664 GetRequests, 535 SyntacticMatches, 87 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 51.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21882occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.6s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9961147208589665 AbsIntWeakeningRatio, 0.09220985691573927 AbsIntAvgWeakeningVarsNumRemoved, 409.19872813990463 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 108 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 980 NumberOfCodeBlocks, 980 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 974 ConstructedInterpolants, 0 QuantifiedInterpolants, 1383912 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 221/488 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown