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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label30_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 23:45:26,364 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 23:45:26,367 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 23:45:26,379 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 23:45:26,380 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 23:45:26,381 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 23:45:26,382 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 23:45:26,384 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 23:45:26,386 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 23:45:26,387 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 23:45:26,388 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 23:45:26,388 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 23:45:26,389 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 23:45:26,390 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 23:45:26,391 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 23:45:26,392 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 23:45:26,393 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 23:45:26,395 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 23:45:26,397 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 23:45:26,399 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 23:45:26,400 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 23:45:26,401 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 23:45:26,403 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 23:45:26,412 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-24 23:45:26,427 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 23:45:26,427 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 23:45:26,428 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 23:45:26,428 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 23:45:26,429 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 23:45:26,429 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 23:45:26,429 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-24 23:45:26,429 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 23:45:26,429 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-24 23:45:26,430 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 23:45:26,430 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 23:45:26,430 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 23:45:26,430 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 23:45:26,430 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 23:45:26,431 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 23:45:26,431 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 23:45:26,432 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 23:45:26,432 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 23:45:26,432 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 23:45:26,432 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 23:45:26,432 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 23:45:26,433 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 23:45:26,433 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 23:45:26,433 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 23:45:26,433 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 23:45:26,433 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 23:45:26,434 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 23:45:26,434 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 23:45:26,434 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 23:45:26,434 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 23:45:26,434 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 23:45:26,435 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 23:45:26,435 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 23:45:26,435 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 23:45:26,435 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 23:45:26,435 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 23:45:26,501 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 23:45:26,518 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 23:45:26,523 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 23:45:26,525 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 23:45:26,526 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 23:45:26,526 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label30_false-unreach-call.c [2018-10-24 23:45:26,596 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c0ec3c433/53c8ff7b0d994d39a4e0d8ee915e177d/FLAG028c92b8d [2018-10-24 23:45:27,340 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 23:45:27,341 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label30_false-unreach-call.c [2018-10-24 23:45:27,370 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c0ec3c433/53c8ff7b0d994d39a4e0d8ee915e177d/FLAG028c92b8d [2018-10-24 23:45:27,389 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c0ec3c433/53c8ff7b0d994d39a4e0d8ee915e177d [2018-10-24 23:45:27,403 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 23:45:27,405 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 23:45:27,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 23:45:27,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 23:45:27,415 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 23:45:27,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:45:27" (1/1) ... [2018-10-24 23:45:27,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b1086b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:27, skipping insertion in model container [2018-10-24 23:45:27,421 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 11:45:27" (1/1) ... [2018-10-24 23:45:27,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 23:45:27,557 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 23:45:28,635 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:45:28,639 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 23:45:29,023 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 23:45:29,048 INFO L193 MainTranslator]: Completed translation [2018-10-24 23:45:29,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:29 WrapperNode [2018-10-24 23:45:29,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 23:45:29,050 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 23:45:29,050 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 23:45:29,050 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 23:45:29,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:29" (1/1) ... [2018-10-24 23:45:29,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:29" (1/1) ... [2018-10-24 23:45:29,527 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 23:45:29,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 23:45:29,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 23:45:29,528 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 23:45:29,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:29" (1/1) ... [2018-10-24 23:45:29,540 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:29" (1/1) ... [2018-10-24 23:45:29,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:29" (1/1) ... [2018-10-24 23:45:29,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:29" (1/1) ... [2018-10-24 23:45:29,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:29" (1/1) ... [2018-10-24 23:45:29,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:29" (1/1) ... [2018-10-24 23:45:29,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:29" (1/1) ... [2018-10-24 23:45:29,765 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 23:45:29,766 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 23:45:29,766 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 23:45:29,766 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 23:45:29,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:29" (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 23:45:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 23:45:29,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 23:45:29,831 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 23:45:29,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 23:45:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 23:45:29,832 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 23:45:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 23:45:29,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 23:45:29,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 23:45:29,833 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 23:45:40,297 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 23:45:40,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:45:40 BoogieIcfgContainer [2018-10-24 23:45:40,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 23:45:40,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 23:45:40,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 23:45:40,304 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 23:45:40,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 11:45:27" (1/3) ... [2018-10-24 23:45:40,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3b727b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:45:40, skipping insertion in model container [2018-10-24 23:45:40,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 11:45:29" (2/3) ... [2018-10-24 23:45:40,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c3b727b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 11:45:40, skipping insertion in model container [2018-10-24 23:45:40,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 11:45:40" (3/3) ... [2018-10-24 23:45:40,307 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label30_false-unreach-call.c [2018-10-24 23:45:40,318 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 23:45:40,328 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 23:45:40,347 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 23:45:40,398 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 23:45:40,398 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 23:45:40,398 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 23:45:40,398 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 23:45:40,399 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 23:45:40,399 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 23:45:40,399 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 23:45:40,399 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 23:45:40,443 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 23:45:40,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-10-24 23:45:40,451 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:45:40,452 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] [2018-10-24 23:45:40,455 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:45:40,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:45:40,461 INFO L82 PathProgramCache]: Analyzing trace with hash 2090317142, now seen corresponding path program 1 times [2018-10-24 23:45:40,463 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:45:40,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:45:40,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:45:40,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:45:40,515 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:45:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:45:40,933 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 23:45:40,953 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 23:45:40,955 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:45:40,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:45:40,956 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:45:40,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:45:40,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:45:40,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:45:40,984 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 23:45:55,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:45:55,767 INFO L93 Difference]: Finished difference Result 2163 states and 4008 transitions. [2018-10-24 23:45:55,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:45:55,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2018-10-24 23:45:55,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:45:55,812 INFO L225 Difference]: With dead ends: 2163 [2018-10-24 23:45:55,812 INFO L226 Difference]: Without dead ends: 1553 [2018-10-24 23:45:55,826 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:45:55,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2018-10-24 23:45:55,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1526. [2018-10-24 23:45:55,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1526 states. [2018-10-24 23:45:55,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2697 transitions. [2018-10-24 23:45:55,994 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2697 transitions. Word has length 31 [2018-10-24 23:45:55,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:45:55,995 INFO L481 AbstractCegarLoop]: Abstraction has 1526 states and 2697 transitions. [2018-10-24 23:45:55,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:45:55,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2697 transitions. [2018-10-24 23:45:56,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 23:45:56,005 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:45:56,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:45:56,005 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:45:56,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:45:56,006 INFO L82 PathProgramCache]: Analyzing trace with hash -683023063, now seen corresponding path program 1 times [2018-10-24 23:45:56,006 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:45:56,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:45:56,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:45:56,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:45:56,008 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:45:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:45:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:45:56,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:45:56,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:45:56,376 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:45:56,378 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:45:56,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:45:56,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:45:56,379 INFO L87 Difference]: Start difference. First operand 1526 states and 2697 transitions. Second operand 6 states. [2018-10-24 23:46:17,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:46:17,137 INFO L93 Difference]: Finished difference Result 5789 states and 10684 transitions. [2018-10-24 23:46:17,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:46:17,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-10-24 23:46:17,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:46:17,171 INFO L225 Difference]: With dead ends: 5789 [2018-10-24 23:46:17,172 INFO L226 Difference]: Without dead ends: 4269 [2018-10-24 23:46:17,191 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 23:46:17,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4269 states. [2018-10-24 23:46:17,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4269 to 4243. [2018-10-24 23:46:17,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4243 states. [2018-10-24 23:46:17,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4243 states to 4243 states and 6364 transitions. [2018-10-24 23:46:17,319 INFO L78 Accepts]: Start accepts. Automaton has 4243 states and 6364 transitions. Word has length 110 [2018-10-24 23:46:17,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:46:17,320 INFO L481 AbstractCegarLoop]: Abstraction has 4243 states and 6364 transitions. [2018-10-24 23:46:17,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:46:17,320 INFO L276 IsEmpty]: Start isEmpty. Operand 4243 states and 6364 transitions. [2018-10-24 23:46:17,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-24 23:46:17,325 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:46:17,325 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:46:17,326 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:46:17,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:46:17,326 INFO L82 PathProgramCache]: Analyzing trace with hash -697377769, now seen corresponding path program 1 times [2018-10-24 23:46:17,326 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:46:17,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:17,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:46:17,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:17,329 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:46:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:46:17,790 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:46:17,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:46:17,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 23:46:17,791 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:46:17,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 23:46:17,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 23:46:17,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 23:46:17,792 INFO L87 Difference]: Start difference. First operand 4243 states and 6364 transitions. Second operand 6 states. [2018-10-24 23:46:27,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:46:27,295 INFO L93 Difference]: Finished difference Result 12711 states and 20731 transitions. [2018-10-24 23:46:27,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 23:46:27,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-10-24 23:46:27,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:46:27,360 INFO L225 Difference]: With dead ends: 12711 [2018-10-24 23:46:27,360 INFO L226 Difference]: Without dead ends: 8474 [2018-10-24 23:46:27,385 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 23:46:27,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8474 states. [2018-10-24 23:46:27,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8474 to 8387. [2018-10-24 23:46:27,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8387 states. [2018-10-24 23:46:27,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8387 states to 8387 states and 12583 transitions. [2018-10-24 23:46:27,656 INFO L78 Accepts]: Start accepts. Automaton has 8387 states and 12583 transitions. Word has length 111 [2018-10-24 23:46:27,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:46:27,656 INFO L481 AbstractCegarLoop]: Abstraction has 8387 states and 12583 transitions. [2018-10-24 23:46:27,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 23:46:27,657 INFO L276 IsEmpty]: Start isEmpty. Operand 8387 states and 12583 transitions. [2018-10-24 23:46:27,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-24 23:46:27,667 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:46:27,667 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 23:46:27,667 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:46:27,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:46:27,668 INFO L82 PathProgramCache]: Analyzing trace with hash -2038002306, now seen corresponding path program 1 times [2018-10-24 23:46:27,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:46:27,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:27,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:46:27,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:27,670 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:46:27,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:46:27,993 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 23:46:28,168 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 49 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 23:46:28,168 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:46:28,169 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:46:28,170 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 186 with the following transitions: [2018-10-24 23:46:28,172 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [858], [860], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1239], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:46:28,221 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:46:28,221 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:46:30,204 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:46:30,206 INFO L272 AbstractInterpreter]: Visited 88 different actions 250 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 23:46:30,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:46:30,250 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:46:30,250 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:46:30,250 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:46:30,264 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:46:30,264 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:46:30,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:46:30,369 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:46:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:46:30,996 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:46:31,890 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 121 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:46:31,931 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:46:31,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-24 23:46:31,932 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:46:31,933 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 23:46:31,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 23:46:31,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-24 23:46:31,937 INFO L87 Difference]: Start difference. First operand 8387 states and 12583 transitions. Second operand 9 states. [2018-10-24 23:46:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:46:42,509 INFO L93 Difference]: Finished difference Result 21307 states and 32716 transitions. [2018-10-24 23:46:42,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-24 23:46:42,509 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 185 [2018-10-24 23:46:42,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:46:42,612 INFO L225 Difference]: With dead ends: 21307 [2018-10-24 23:46:42,613 INFO L226 Difference]: Without dead ends: 12891 [2018-10-24 23:46:42,679 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 368 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2018-10-24 23:46:42,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12891 states. [2018-10-24 23:46:43,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12891 to 12871. [2018-10-24 23:46:43,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12871 states. [2018-10-24 23:46:43,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12871 states to 12871 states and 16973 transitions. [2018-10-24 23:46:43,064 INFO L78 Accepts]: Start accepts. Automaton has 12871 states and 16973 transitions. Word has length 185 [2018-10-24 23:46:43,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:46:43,065 INFO L481 AbstractCegarLoop]: Abstraction has 12871 states and 16973 transitions. [2018-10-24 23:46:43,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 23:46:43,065 INFO L276 IsEmpty]: Start isEmpty. Operand 12871 states and 16973 transitions. [2018-10-24 23:46:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-10-24 23:46:43,069 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:46:43,070 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 23:46:43,070 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:46:43,070 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:46:43,071 INFO L82 PathProgramCache]: Analyzing trace with hash -775294024, now seen corresponding path program 1 times [2018-10-24 23:46:43,071 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:46:43,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:43,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:46:43,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:43,072 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:46:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:46:43,634 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-10-24 23:46:43,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 23:46:43,635 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 23:46:43,635 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 23:46:43,636 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 23:46:43,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 23:46:43,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:46:43,636 INFO L87 Difference]: Start difference. First operand 12871 states and 16973 transitions. Second operand 4 states. [2018-10-24 23:46:53,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 23:46:53,947 INFO L93 Difference]: Finished difference Result 33260 states and 46207 transitions. [2018-10-24 23:46:53,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 23:46:53,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 198 [2018-10-24 23:46:53,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 23:46:54,014 INFO L225 Difference]: With dead ends: 33260 [2018-10-24 23:46:54,015 INFO L226 Difference]: Without dead ends: 16289 [2018-10-24 23:46:54,092 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 23:46:54,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16289 states. [2018-10-24 23:46:54,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16289 to 13603. [2018-10-24 23:46:54,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13603 states. [2018-10-24 23:46:54,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13603 states to 13603 states and 16419 transitions. [2018-10-24 23:46:54,400 INFO L78 Accepts]: Start accepts. Automaton has 13603 states and 16419 transitions. Word has length 198 [2018-10-24 23:46:54,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 23:46:54,402 INFO L481 AbstractCegarLoop]: Abstraction has 13603 states and 16419 transitions. [2018-10-24 23:46:54,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 23:46:54,402 INFO L276 IsEmpty]: Start isEmpty. Operand 13603 states and 16419 transitions. [2018-10-24 23:46:54,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-10-24 23:46:54,411 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 23:46:54,411 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 23:46:54,412 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 23:46:54,412 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:46:54,412 INFO L82 PathProgramCache]: Analyzing trace with hash -22499239, now seen corresponding path program 1 times [2018-10-24 23:46:54,412 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 23:46:54,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:54,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:46:54,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 23:46:54,415 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 23:46:54,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:46:55,089 WARN L179 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 23:46:55,901 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 49 proven. 59 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-24 23:46:55,901 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:46:55,901 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 23:46:55,902 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 262 with the following transitions: [2018-10-24 23:46:55,902 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [858], [860], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1547], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-24 23:46:55,911 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-24 23:46:55,912 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 23:46:56,562 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 23:46:56,562 INFO L272 AbstractInterpreter]: Visited 151 different actions 301 times. Merged at 7 different actions 11 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 26 variables. [2018-10-24 23:46:56,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 23:46:56,588 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 23:46:56,588 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 23:46:56,588 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 23:46:56,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 23:46:56,607 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 23:46:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 23:46:56,711 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 23:46:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-10-24 23:46:57,391 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 23:47:00,563 WARN L179 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 24 [2018-10-24 23:47:01,175 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 53 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 23:47:01,202 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 23:47:01,202 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 18 [2018-10-24 23:47:01,202 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 23:47:01,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 23:47:01,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 23:47:01,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-10-24 23:47:01,204 INFO L87 Difference]: Start difference. First operand 13603 states and 16419 transitions. Second operand 13 states. Received shutdown request... [2018-10-24 23:49:42,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2018-10-24 23:49:42,800 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 23:49:42,807 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 23:49:42,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 11:49:42 BoogieIcfgContainer [2018-10-24 23:49:42,808 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 23:49:42,809 INFO L168 Benchmark]: Toolchain (without parser) took 255405.10 ms. Allocated memory was 1.5 GB in the beginning and 3.3 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -252.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 23:49:42,810 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 23:49:42,810 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1643.09 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:42,811 INFO L168 Benchmark]: Boogie Procedure Inliner took 477.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 797.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -948.0 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:42,812 INFO L168 Benchmark]: Boogie Preprocessor took 237.80 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:42,813 INFO L168 Benchmark]: RCFGBuilder took 10533.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 461.0 MB). Peak memory consumption was 461.0 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:42,814 INFO L168 Benchmark]: TraceAbstraction took 242507.91 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 911.2 MB). Free memory was 1.8 GB in the beginning and 1.7 GB in the end (delta: 69.5 MB). Peak memory consumption was 980.7 MB. Max. memory is 7.1 GB. [2018-10-24 23:49:42,819 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1643.09 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 477.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 797.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -948.0 MB). Peak memory consumption was 56.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 237.80 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: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10533.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 461.0 MB). Peak memory consumption was 461.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 242507.91 ms. Allocated memory was 2.3 GB in the beginning and 3.3 GB in the end (delta: 911.2 MB). Free memory was 1.8 GB in the beginning and 1.7 GB in the end (delta: 69.5 MB). Peak memory consumption was 980.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 80). Cancelled while BasicCegarLoop was constructing difference of abstraction (13603states) and FLOYD_HOARE automaton (currently 104 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (45291 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 242.4s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 228.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1756 SDtfs, 22948 SDslu, 2452 SDs, 0 SdLazy, 36385 SolverSat, 7135 SolverUnsat, 57 SolverUnknown, 0 SolverNotchecked, 202.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1046 GetRequests, 895 SyntacticMatches, 6 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4671 ImplicationChecksByTransitivity, 20.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13603occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.7s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 2846 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 1342 NumberOfCodeBlocks, 1342 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1778 ConstructedInterpolants, 98 QuantifiedInterpolants, 2173910 SizeOfPredicates, 2 NumberOfNonLiveVariables, 832 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 799/952 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown