java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/loop-invgen/heapsort_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-24 10:54:01,408 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-24 10:54:01,410 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-24 10:54:01,423 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-24 10:54:01,423 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-24 10:54:01,424 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-24 10:54:01,425 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-24 10:54:01,427 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-24 10:54:01,429 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-24 10:54:01,429 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-24 10:54:01,430 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-24 10:54:01,431 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-24 10:54:01,431 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-24 10:54:01,434 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-24 10:54:01,436 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-24 10:54:01,437 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-24 10:54:01,440 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-24 10:54:01,445 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-24 10:54:01,451 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-24 10:54:01,452 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-24 10:54:01,453 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-24 10:54:01,458 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-24 10:54:01,462 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-07-24 10:54:01,463 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-07-24 10:54:01,463 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-07-24 10:54:01,464 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-07-24 10:54:01,465 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-07-24 10:54:01,466 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-07-24 10:54:01,467 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-07-24 10:54:01,471 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-07-24 10:54:01,471 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-07-24 10:54:01,472 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-07-24 10:54:01,475 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-07-24 10:54:01,503 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-24 10:54:01,503 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-24 10:54:01,504 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-24 10:54:01,504 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-24 10:54:01,504 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-24 10:54:01,505 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-24 10:54:01,505 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-24 10:54:01,505 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-24 10:54:01,505 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-24 10:54:01,506 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-24 10:54:01,506 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-24 10:54:01,507 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-24 10:54:01,507 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-24 10:54:01,507 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-24 10:54:01,508 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-24 10:54:01,508 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-24 10:54:01,508 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-24 10:54:01,508 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-24 10:54:01,510 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-24 10:54:01,510 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-24 10:54:01,510 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-24 10:54:01,510 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-24 10:54:01,511 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-24 10:54:01,511 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-24 10:54:01,511 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-24 10:54:01,511 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-24 10:54:01,512 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-24 10:54:01,512 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-07-24 10:54:01,512 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-24 10:54:01,512 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-24 10:54:01,512 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-24 10:54:01,512 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-24 10:54:01,513 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-24 10:54:01,574 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-24 10:54:01,589 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-24 10:54:01,595 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-24 10:54:01,597 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-24 10:54:01,597 INFO L276 PluginConnector]: CDTParser initialized [2018-07-24 10:54:01,598 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/heapsort_true-unreach-call_true-termination.i [2018-07-24 10:54:01,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98667b8d0/c2b6af21b5ac4ff29538f60d7d113674/FLAG7562a355b [2018-07-24 10:54:02,082 INFO L276 CDTParser]: Found 1 translation units. [2018-07-24 10:54:02,083 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/heapsort_true-unreach-call_true-termination.i [2018-07-24 10:54:02,090 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98667b8d0/c2b6af21b5ac4ff29538f60d7d113674/FLAG7562a355b [2018-07-24 10:54:02,104 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98667b8d0/c2b6af21b5ac4ff29538f60d7d113674 [2018-07-24 10:54:02,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-24 10:54:02,117 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-24 10:54:02,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-24 10:54:02,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-24 10:54:02,126 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-24 10:54:02,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 10:54:02" (1/1) ... [2018-07-24 10:54:02,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec00d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:02, skipping insertion in model container [2018-07-24 10:54:02,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.07 10:54:02" (1/1) ... [2018-07-24 10:54:02,343 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-24 10:54:02,402 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 10:54:02,422 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-24 10:54:02,440 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-24 10:54:02,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:02 WrapperNode [2018-07-24 10:54:02,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-24 10:54:02,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-24 10:54:02,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-24 10:54:02,466 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-24 10:54:02,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:02" (1/1) ... [2018-07-24 10:54:02,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:02" (1/1) ... [2018-07-24 10:54:02,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-24 10:54:02,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-24 10:54:02,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-24 10:54:02,492 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-24 10:54:02,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:02" (1/1) ... [2018-07-24 10:54:02,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:02" (1/1) ... [2018-07-24 10:54:02,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:02" (1/1) ... [2018-07-24 10:54:02,505 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:02" (1/1) ... [2018-07-24 10:54:02,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:02" (1/1) ... [2018-07-24 10:54:02,531 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:02" (1/1) ... [2018-07-24 10:54:02,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:02" (1/1) ... [2018-07-24 10:54:02,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-24 10:54:02,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-24 10:54:02,537 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-24 10:54:02,537 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-24 10:54:02,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:02" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 10:54:02,600 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-24 10:54:02,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-24 10:54:02,600 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assert [2018-07-24 10:54:02,600 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assert [2018-07-24 10:54:02,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-24 10:54:02,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-24 10:54:02,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-24 10:54:02,601 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-24 10:54:03,100 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-24 10:54:03,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 10:54:03 BoogieIcfgContainer [2018-07-24 10:54:03,101 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-24 10:54:03,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-24 10:54:03,102 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-24 10:54:03,105 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-24 10:54:03,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.07 10:54:02" (1/3) ... [2018-07-24 10:54:03,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c1fae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 10:54:03, skipping insertion in model container [2018-07-24 10:54:03,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.07 10:54:02" (2/3) ... [2018-07-24 10:54:03,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c1fae8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.07 10:54:03, skipping insertion in model container [2018-07-24 10:54:03,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.07 10:54:03" (3/3) ... [2018-07-24 10:54:03,109 INFO L112 eAbstractionObserver]: Analyzing ICFG heapsort_true-unreach-call_true-termination.i [2018-07-24 10:54:03,117 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-24 10:54:03,125 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-24 10:54:03,180 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-24 10:54:03,180 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-24 10:54:03,181 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-24 10:54:03,181 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-24 10:54:03,181 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-24 10:54:03,181 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-24 10:54:03,181 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-24 10:54:03,181 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-24 10:54:03,182 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-24 10:54:03,198 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2018-07-24 10:54:03,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-07-24 10:54:03,204 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:03,205 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:03,205 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:03,210 INFO L82 PathProgramCache]: Analyzing trace with hash 397302021, now seen corresponding path program 1 times [2018-07-24 10:54:03,213 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:03,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:03,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:03,268 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:03,268 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:03,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:03,353 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:03,355 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:54:03,355 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-07-24 10:54:03,355 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:03,361 INFO L450 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-07-24 10:54:03,375 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-07-24 10:54:03,376 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-24 10:54:03,379 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2018-07-24 10:54:03,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:03,409 INFO L93 Difference]: Finished difference Result 83 states and 141 transitions. [2018-07-24 10:54:03,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-07-24 10:54:03,411 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2018-07-24 10:54:03,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:03,422 INFO L225 Difference]: With dead ends: 83 [2018-07-24 10:54:03,422 INFO L226 Difference]: Without dead ends: 40 [2018-07-24 10:54:03,427 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-07-24 10:54:03,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-07-24 10:54:03,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-07-24 10:54:03,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-07-24 10:54:03,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 59 transitions. [2018-07-24 10:54:03,489 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 59 transitions. Word has length 15 [2018-07-24 10:54:03,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:03,490 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 59 transitions. [2018-07-24 10:54:03,490 INFO L472 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-07-24 10:54:03,490 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 59 transitions. [2018-07-24 10:54:03,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-24 10:54:03,491 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:03,491 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:03,492 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:03,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1054353405, now seen corresponding path program 1 times [2018-07-24 10:54:03,492 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:03,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:03,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:03,494 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:03,494 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:03,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:03,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:03,609 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:54:03,609 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 10:54:03,609 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:03,611 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 10:54:03,611 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 10:54:03,612 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 10:54:03,612 INFO L87 Difference]: Start difference. First operand 40 states and 59 transitions. Second operand 5 states. [2018-07-24 10:54:03,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:03,862 INFO L93 Difference]: Finished difference Result 46 states and 64 transitions. [2018-07-24 10:54:03,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 10:54:03,863 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-07-24 10:54:03,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:03,864 INFO L225 Difference]: With dead ends: 46 [2018-07-24 10:54:03,865 INFO L226 Difference]: Without dead ends: 44 [2018-07-24 10:54:03,866 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 10:54:03,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-07-24 10:54:03,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-07-24 10:54:03,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-07-24 10:54:03,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 62 transitions. [2018-07-24 10:54:03,877 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 62 transitions. Word has length 16 [2018-07-24 10:54:03,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:03,879 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 62 transitions. [2018-07-24 10:54:03,879 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 10:54:03,879 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 62 transitions. [2018-07-24 10:54:03,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-24 10:54:03,880 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:03,880 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:03,880 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:03,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1049616636, now seen corresponding path program 1 times [2018-07-24 10:54:03,881 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:03,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:03,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:03,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:03,885 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:04,008 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:54:04,008 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-07-24 10:54:04,008 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:04,009 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 10:54:04,009 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 10:54:04,009 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-07-24 10:54:04,010 INFO L87 Difference]: Start difference. First operand 44 states and 62 transitions. Second operand 5 states. [2018-07-24 10:54:04,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:04,286 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2018-07-24 10:54:04,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 10:54:04,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-07-24 10:54:04,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:04,290 INFO L225 Difference]: With dead ends: 52 [2018-07-24 10:54:04,290 INFO L226 Difference]: Without dead ends: 50 [2018-07-24 10:54:04,292 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-07-24 10:54:04,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-07-24 10:54:04,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2018-07-24 10:54:04,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-07-24 10:54:04,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2018-07-24 10:54:04,307 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 16 [2018-07-24 10:54:04,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:04,307 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2018-07-24 10:54:04,307 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 10:54:04,307 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2018-07-24 10:54:04,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-24 10:54:04,308 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:04,308 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:04,309 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:04,309 INFO L82 PathProgramCache]: Analyzing trace with hash -1015923015, now seen corresponding path program 1 times [2018-07-24 10:54:04,309 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:04,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:04,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:04,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:04,310 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:04,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:04,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:04,425 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:54:04,426 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 10:54:04,426 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:04,427 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 10:54:04,427 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 10:54:04,427 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-24 10:54:04,427 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 6 states. [2018-07-24 10:54:04,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:04,860 INFO L93 Difference]: Finished difference Result 85 states and 120 transitions. [2018-07-24 10:54:04,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 10:54:04,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-07-24 10:54:04,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:04,863 INFO L225 Difference]: With dead ends: 85 [2018-07-24 10:54:04,863 INFO L226 Difference]: Without dead ends: 83 [2018-07-24 10:54:04,864 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 10:54:04,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-07-24 10:54:04,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70. [2018-07-24 10:54:04,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-07-24 10:54:04,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 100 transitions. [2018-07-24 10:54:04,881 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 100 transitions. Word has length 16 [2018-07-24 10:54:04,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:04,881 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 100 transitions. [2018-07-24 10:54:04,882 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 10:54:04,882 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 100 transitions. [2018-07-24 10:54:04,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-07-24 10:54:04,883 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:04,883 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:04,883 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:04,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1028167116, now seen corresponding path program 1 times [2018-07-24 10:54:04,884 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:04,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:04,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:04,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:04,885 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:05,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:05,188 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:54:05,189 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-24 10:54:05,189 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:05,189 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 10:54:05,190 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 10:54:05,190 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-07-24 10:54:05,190 INFO L87 Difference]: Start difference. First operand 70 states and 100 transitions. Second operand 6 states. [2018-07-24 10:54:05,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:05,575 INFO L93 Difference]: Finished difference Result 129 states and 190 transitions. [2018-07-24 10:54:05,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 10:54:05,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-07-24 10:54:05,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:05,581 INFO L225 Difference]: With dead ends: 129 [2018-07-24 10:54:05,582 INFO L226 Difference]: Without dead ends: 127 [2018-07-24 10:54:05,582 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-07-24 10:54:05,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-07-24 10:54:05,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 98. [2018-07-24 10:54:05,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-07-24 10:54:05,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 144 transitions. [2018-07-24 10:54:05,603 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 144 transitions. Word has length 16 [2018-07-24 10:54:05,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:05,603 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 144 transitions. [2018-07-24 10:54:05,603 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 10:54:05,604 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 144 transitions. [2018-07-24 10:54:05,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-24 10:54:05,605 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:05,605 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:05,605 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:05,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1829298465, now seen corresponding path program 1 times [2018-07-24 10:54:05,606 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:05,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:05,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:05,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:05,607 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:05,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:05,768 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:05,769 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:05,770 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 10:54:05,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:05,785 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:05,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:06,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-07-24 10:54:06,097 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:06,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:06,284 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 10:54:06,285 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [9] total 15 [2018-07-24 10:54:06,285 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:06,285 INFO L450 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-07-24 10:54:06,285 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-07-24 10:54:06,286 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2018-07-24 10:54:06,286 INFO L87 Difference]: Start difference. First operand 98 states and 144 transitions. Second operand 5 states. [2018-07-24 10:54:07,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:07,039 INFO L93 Difference]: Finished difference Result 304 states and 478 transitions. [2018-07-24 10:54:07,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 10:54:07,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-07-24 10:54:07,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:07,058 INFO L225 Difference]: With dead ends: 304 [2018-07-24 10:54:07,059 INFO L226 Difference]: Without dead ends: 213 [2018-07-24 10:54:07,061 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2018-07-24 10:54:07,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-07-24 10:54:07,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 165. [2018-07-24 10:54:07,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-07-24 10:54:07,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 257 transitions. [2018-07-24 10:54:07,129 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 257 transitions. Word has length 21 [2018-07-24 10:54:07,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:07,130 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 257 transitions. [2018-07-24 10:54:07,130 INFO L472 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-07-24 10:54:07,130 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 257 transitions. [2018-07-24 10:54:07,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-24 10:54:07,131 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:07,131 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:07,132 INFO L414 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:07,132 INFO L82 PathProgramCache]: Analyzing trace with hash -1289753751, now seen corresponding path program 1 times [2018-07-24 10:54:07,132 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:07,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:07,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:07,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:07,134 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:07,235 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:07,236 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:07,236 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-24 10:54:07,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:07,249 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:07,263 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:07,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:07,494 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:07,722 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:07,743 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:07,743 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:54:07,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:07,760 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:07,783 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:07,865 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:07,912 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-07-24 10:54:07,912 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7, 9, 9] total 20 [2018-07-24 10:54:07,912 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:07,912 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 10:54:07,913 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 10:54:07,913 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2018-07-24 10:54:07,914 INFO L87 Difference]: Start difference. First operand 165 states and 257 transitions. Second operand 7 states. [2018-07-24 10:54:08,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:08,667 INFO L93 Difference]: Finished difference Result 252 states and 398 transitions. [2018-07-24 10:54:08,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 10:54:08,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-07-24 10:54:08,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:08,673 INFO L225 Difference]: With dead ends: 252 [2018-07-24 10:54:08,673 INFO L226 Difference]: Without dead ends: 250 [2018-07-24 10:54:08,676 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2018-07-24 10:54:08,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-07-24 10:54:08,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 197. [2018-07-24 10:54:08,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-07-24 10:54:08,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 313 transitions. [2018-07-24 10:54:08,751 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 313 transitions. Word has length 21 [2018-07-24 10:54:08,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:08,752 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 313 transitions. [2018-07-24 10:54:08,753 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 10:54:08,753 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 313 transitions. [2018-07-24 10:54:08,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-24 10:54:08,754 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:08,754 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:08,755 INFO L414 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:08,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1185805153, now seen corresponding path program 1 times [2018-07-24 10:54:08,755 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:08,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:08,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:08,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:08,759 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:08,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:08,807 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:54:08,807 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-24 10:54:08,807 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:08,808 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-24 10:54:08,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-24 10:54:08,808 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 10:54:08,809 INFO L87 Difference]: Start difference. First operand 197 states and 313 transitions. Second operand 3 states. [2018-07-24 10:54:08,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:08,880 INFO L93 Difference]: Finished difference Result 257 states and 400 transitions. [2018-07-24 10:54:08,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-24 10:54:08,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-07-24 10:54:08,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:08,889 INFO L225 Difference]: With dead ends: 257 [2018-07-24 10:54:08,889 INFO L226 Difference]: Without dead ends: 194 [2018-07-24 10:54:08,890 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-24 10:54:08,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2018-07-24 10:54:08,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2018-07-24 10:54:08,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2018-07-24 10:54:08,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 306 transitions. [2018-07-24 10:54:08,937 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 306 transitions. Word has length 21 [2018-07-24 10:54:08,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:08,941 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 306 transitions. [2018-07-24 10:54:08,941 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-24 10:54:08,941 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 306 transitions. [2018-07-24 10:54:08,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-24 10:54:08,942 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:08,942 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:08,942 INFO L414 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:08,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1567167616, now seen corresponding path program 1 times [2018-07-24 10:54:08,943 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:08,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:08,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:08,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:08,944 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:09,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:09,072 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-24 10:54:09,073 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-24 10:54:09,073 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:09,073 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-24 10:54:09,073 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-24 10:54:09,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-07-24 10:54:09,074 INFO L87 Difference]: Start difference. First operand 194 states and 306 transitions. Second operand 4 states. [2018-07-24 10:54:09,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:09,403 INFO L93 Difference]: Finished difference Result 331 states and 520 transitions. [2018-07-24 10:54:09,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-07-24 10:54:09,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-07-24 10:54:09,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:09,406 INFO L225 Difference]: With dead ends: 331 [2018-07-24 10:54:09,409 INFO L226 Difference]: Without dead ends: 247 [2018-07-24 10:54:09,410 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-07-24 10:54:09,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2018-07-24 10:54:09,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 198. [2018-07-24 10:54:09,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2018-07-24 10:54:09,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 310 transitions. [2018-07-24 10:54:09,460 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 310 transitions. Word has length 21 [2018-07-24 10:54:09,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:09,462 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 310 transitions. [2018-07-24 10:54:09,462 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-24 10:54:09,462 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 310 transitions. [2018-07-24 10:54:09,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-07-24 10:54:09,463 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:09,463 INFO L353 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:09,464 INFO L414 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:09,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1725349867, now seen corresponding path program 1 times [2018-07-24 10:54:09,464 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:09,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:09,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:09,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:09,469 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:09,673 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:09,673 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:54:09,685 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:09,685 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:09,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:09,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:09,785 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-24 10:54:09,885 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 10:54:09,885 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [8] total 12 [2018-07-24 10:54:09,885 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:09,885 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 10:54:09,886 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 10:54:09,886 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-07-24 10:54:09,886 INFO L87 Difference]: Start difference. First operand 198 states and 310 transitions. Second operand 7 states. [2018-07-24 10:54:10,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:10,707 INFO L93 Difference]: Finished difference Result 281 states and 438 transitions. [2018-07-24 10:54:10,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-07-24 10:54:10,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-07-24 10:54:10,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:10,711 INFO L225 Difference]: With dead ends: 281 [2018-07-24 10:54:10,712 INFO L226 Difference]: Without dead ends: 279 [2018-07-24 10:54:10,712 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-07-24 10:54:10,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2018-07-24 10:54:10,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 246. [2018-07-24 10:54:10,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2018-07-24 10:54:10,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 391 transitions. [2018-07-24 10:54:10,768 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 391 transitions. Word has length 21 [2018-07-24 10:54:10,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:10,769 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 391 transitions. [2018-07-24 10:54:10,769 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 10:54:10,769 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 391 transitions. [2018-07-24 10:54:10,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-07-24 10:54:10,770 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:10,770 INFO L353 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:10,770 INFO L414 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:10,771 INFO L82 PathProgramCache]: Analyzing trace with hash -999582530, now seen corresponding path program 1 times [2018-07-24 10:54:10,771 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:10,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:10,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:10,772 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:10,773 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:10,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:11,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-07-24 10:54:11,219 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:11,219 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:54:11,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:11,227 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:11,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:11,374 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 10:54:11,374 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:11,414 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-07-24 10:54:11,434 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 10:54:11,434 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 9 [2018-07-24 10:54:11,434 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:11,435 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 10:54:11,435 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 10:54:11,435 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-07-24 10:54:11,435 INFO L87 Difference]: Start difference. First operand 246 states and 391 transitions. Second operand 6 states. [2018-07-24 10:54:11,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:11,780 INFO L93 Difference]: Finished difference Result 322 states and 520 transitions. [2018-07-24 10:54:11,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 10:54:11,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2018-07-24 10:54:11,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:11,785 INFO L225 Difference]: With dead ends: 322 [2018-07-24 10:54:11,785 INFO L226 Difference]: Without dead ends: 320 [2018-07-24 10:54:11,786 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2018-07-24 10:54:11,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-07-24 10:54:11,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 289. [2018-07-24 10:54:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-07-24 10:54:11,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 465 transitions. [2018-07-24 10:54:11,842 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 465 transitions. Word has length 28 [2018-07-24 10:54:11,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:11,843 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 465 transitions. [2018-07-24 10:54:11,843 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 10:54:11,843 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 465 transitions. [2018-07-24 10:54:11,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-24 10:54:11,844 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:11,844 INFO L353 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:11,845 INFO L414 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:11,845 INFO L82 PathProgramCache]: Analyzing trace with hash 793690116, now seen corresponding path program 1 times [2018-07-24 10:54:11,845 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:11,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:11,846 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:11,846 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:11,846 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:11,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:11,997 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-24 10:54:11,998 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:11,998 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:54:12,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:12,009 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:12,026 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-24 10:54:12,367 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:12,641 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-24 10:54:12,661 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:12,661 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:54:12,678 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:12,678 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:12,706 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-24 10:54:12,790 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:12,945 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-24 10:54:12,946 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-07-24 10:54:12,946 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [8, 10, 9] total 21 [2018-07-24 10:54:12,947 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:12,947 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 10:54:12,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 10:54:12,947 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2018-07-24 10:54:12,948 INFO L87 Difference]: Start difference. First operand 289 states and 465 transitions. Second operand 7 states. [2018-07-24 10:54:13,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:13,846 INFO L93 Difference]: Finished difference Result 460 states and 751 transitions. [2018-07-24 10:54:13,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 10:54:13,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2018-07-24 10:54:13,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:13,854 INFO L225 Difference]: With dead ends: 460 [2018-07-24 10:54:13,854 INFO L226 Difference]: Without dead ends: 458 [2018-07-24 10:54:13,855 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2018-07-24 10:54:13,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2018-07-24 10:54:13,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 407. [2018-07-24 10:54:13,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2018-07-24 10:54:13,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 664 transitions. [2018-07-24 10:54:13,926 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 664 transitions. Word has length 33 [2018-07-24 10:54:13,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:13,927 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 664 transitions. [2018-07-24 10:54:13,927 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 10:54:13,927 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 664 transitions. [2018-07-24 10:54:13,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-07-24 10:54:13,928 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:13,928 INFO L353 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:13,928 INFO L414 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:13,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1578049146, now seen corresponding path program 1 times [2018-07-24 10:54:13,929 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:13,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:13,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:13,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:13,931 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:14,055 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-07-24 10:54:14,056 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:14,056 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:54:14,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:14,065 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:14,091 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:14,449 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-24 10:54:14,449 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:14,554 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-07-24 10:54:14,574 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 10:54:14,575 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [8] total 17 [2018-07-24 10:54:14,575 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:14,575 INFO L450 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-07-24 10:54:14,575 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-07-24 10:54:14,576 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2018-07-24 10:54:14,576 INFO L87 Difference]: Start difference. First operand 407 states and 664 transitions. Second operand 8 states. [2018-07-24 10:54:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:15,115 INFO L93 Difference]: Finished difference Result 441 states and 701 transitions. [2018-07-24 10:54:15,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 10:54:15,120 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-07-24 10:54:15,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:15,124 INFO L225 Difference]: With dead ends: 441 [2018-07-24 10:54:15,124 INFO L226 Difference]: Without dead ends: 439 [2018-07-24 10:54:15,125 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-07-24 10:54:15,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2018-07-24 10:54:15,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 419. [2018-07-24 10:54:15,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2018-07-24 10:54:15,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 673 transitions. [2018-07-24 10:54:15,199 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 673 transitions. Word has length 33 [2018-07-24 10:54:15,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:15,199 INFO L471 AbstractCegarLoop]: Abstraction has 419 states and 673 transitions. [2018-07-24 10:54:15,199 INFO L472 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-07-24 10:54:15,199 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 673 transitions. [2018-07-24 10:54:15,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-07-24 10:54:15,200 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:15,201 INFO L353 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-24 10:54:15,201 INFO L414 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:15,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1056264363, now seen corresponding path program 1 times [2018-07-24 10:54:15,201 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:15,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:15,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:15,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:15,202 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:15,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:15,302 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-07-24 10:54:15,302 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:15,302 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:54:15,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:15,310 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:15,327 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:15,362 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-07-24 10:54:15,362 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2018-07-24 10:54:15,451 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 10:54:15,452 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [8] total 10 [2018-07-24 10:54:15,452 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:15,452 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 10:54:15,452 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 10:54:15,453 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2018-07-24 10:54:15,453 INFO L87 Difference]: Start difference. First operand 419 states and 673 transitions. Second operand 7 states. [2018-07-24 10:54:16,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:16,789 INFO L93 Difference]: Finished difference Result 525 states and 836 transitions. [2018-07-24 10:54:16,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 10:54:16,791 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2018-07-24 10:54:16,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:16,795 INFO L225 Difference]: With dead ends: 525 [2018-07-24 10:54:16,795 INFO L226 Difference]: Without dead ends: 523 [2018-07-24 10:54:16,796 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 84 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-07-24 10:54:16,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2018-07-24 10:54:16,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 423. [2018-07-24 10:54:16,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2018-07-24 10:54:16,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 676 transitions. [2018-07-24 10:54:16,875 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 676 transitions. Word has length 43 [2018-07-24 10:54:16,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:16,875 INFO L471 AbstractCegarLoop]: Abstraction has 423 states and 676 transitions. [2018-07-24 10:54:16,875 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 10:54:16,875 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 676 transitions. [2018-07-24 10:54:16,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-07-24 10:54:16,876 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:16,876 INFO L353 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2018-07-24 10:54:16,877 INFO L414 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:16,877 INFO L82 PathProgramCache]: Analyzing trace with hash 694556156, now seen corresponding path program 1 times [2018-07-24 10:54:16,877 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:16,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:16,878 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:16,878 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:16,878 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:17,306 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-07-24 10:54:17,306 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:17,306 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:54:17,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:17,316 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:17,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:17,375 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-07-24 10:54:17,375 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:17,422 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-07-24 10:54:17,445 INFO L309 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-07-24 10:54:17,445 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [8] total 11 [2018-07-24 10:54:17,445 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:17,445 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-24 10:54:17,446 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-24 10:54:17,446 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-07-24 10:54:17,446 INFO L87 Difference]: Start difference. First operand 423 states and 676 transitions. Second operand 7 states. [2018-07-24 10:54:17,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:17,817 INFO L93 Difference]: Finished difference Result 431 states and 683 transitions. [2018-07-24 10:54:17,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-24 10:54:17,817 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2018-07-24 10:54:17,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:17,821 INFO L225 Difference]: With dead ends: 431 [2018-07-24 10:54:17,821 INFO L226 Difference]: Without dead ends: 429 [2018-07-24 10:54:17,822 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 86 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2018-07-24 10:54:17,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-07-24 10:54:17,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 427. [2018-07-24 10:54:17,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2018-07-24 10:54:17,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 679 transitions. [2018-07-24 10:54:17,895 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 679 transitions. Word has length 45 [2018-07-24 10:54:17,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:17,895 INFO L471 AbstractCegarLoop]: Abstraction has 427 states and 679 transitions. [2018-07-24 10:54:17,895 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-24 10:54:17,895 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 679 transitions. [2018-07-24 10:54:17,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-07-24 10:54:17,897 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:17,897 INFO L353 BasicCegarLoop]: trace histogram [7, 6, 6, 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] [2018-07-24 10:54:17,897 INFO L414 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:17,897 INFO L82 PathProgramCache]: Analyzing trace with hash 1909380230, now seen corresponding path program 1 times [2018-07-24 10:54:17,897 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:17,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:17,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:17,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:17,899 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:17,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 20 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-07-24 10:54:18,024 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:18,024 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:54:18,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:18,033 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:18,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:18,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:18,411 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-07-24 10:54:18,411 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:18,549 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-07-24 10:54:18,569 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:18,569 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:54:18,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:18,585 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:18,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:18,849 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 46 proven. 3 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-07-24 10:54:18,849 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-07-24 10:54:19,002 INFO L309 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-07-24 10:54:19,002 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6, 6, 6] total 21 [2018-07-24 10:54:19,002 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-07-24 10:54:19,003 INFO L450 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-07-24 10:54:19,003 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-07-24 10:54:19,004 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=354, Unknown=0, NotChecked=0, Total=420 [2018-07-24 10:54:19,004 INFO L87 Difference]: Start difference. First operand 427 states and 679 transitions. Second operand 12 states. [2018-07-24 10:54:21,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:21,384 INFO L93 Difference]: Finished difference Result 686 states and 1068 transitions. [2018-07-24 10:54:21,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-24 10:54:21,385 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2018-07-24 10:54:21,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:21,387 INFO L225 Difference]: With dead ends: 686 [2018-07-24 10:54:21,387 INFO L226 Difference]: Without dead ends: 217 [2018-07-24 10:54:21,390 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=182, Invalid=630, Unknown=0, NotChecked=0, Total=812 [2018-07-24 10:54:21,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2018-07-24 10:54:21,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 205. [2018-07-24 10:54:21,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2018-07-24 10:54:21,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 309 transitions. [2018-07-24 10:54:21,439 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 309 transitions. Word has length 57 [2018-07-24 10:54:21,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:21,439 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 309 transitions. [2018-07-24 10:54:21,439 INFO L472 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-07-24 10:54:21,439 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 309 transitions. [2018-07-24 10:54:21,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-07-24 10:54:21,441 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:21,441 INFO L353 BasicCegarLoop]: trace histogram [10, 9, 9, 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] [2018-07-24 10:54:21,441 INFO L414 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:21,441 INFO L82 PathProgramCache]: Analyzing trace with hash 763076711, now seen corresponding path program 1 times [2018-07-24 10:54:21,442 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:21,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:21,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:21,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:21,443 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:21,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-07-24 10:54:21,696 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:21,696 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:54:21,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:21,710 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:21,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:21,746 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:22,199 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-07-24 10:54:22,200 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:22,251 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2018-07-24 10:54:22,271 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-07-24 10:54:22,271 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 12 [2018-07-24 10:54:22,271 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-24 10:54:22,272 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-24 10:54:22,272 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-24 10:54:22,272 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-07-24 10:54:22,272 INFO L87 Difference]: Start difference. First operand 205 states and 309 transitions. Second operand 6 states. [2018-07-24 10:54:22,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-24 10:54:22,506 INFO L93 Difference]: Finished difference Result 391 states and 586 transitions. [2018-07-24 10:54:22,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-07-24 10:54:22,512 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2018-07-24 10:54:22,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-24 10:54:22,514 INFO L225 Difference]: With dead ends: 391 [2018-07-24 10:54:22,514 INFO L226 Difference]: Without dead ends: 226 [2018-07-24 10:54:22,515 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2018-07-24 10:54:22,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2018-07-24 10:54:22,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 208. [2018-07-24 10:54:22,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2018-07-24 10:54:22,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 312 transitions. [2018-07-24 10:54:22,558 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 312 transitions. Word has length 69 [2018-07-24 10:54:22,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-24 10:54:22,558 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 312 transitions. [2018-07-24 10:54:22,558 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-24 10:54:22,558 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 312 transitions. [2018-07-24 10:54:22,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-07-24 10:54:22,560 INFO L345 BasicCegarLoop]: Found error trace [2018-07-24 10:54:22,560 INFO L353 BasicCegarLoop]: trace histogram [14, 13, 13, 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] [2018-07-24 10:54:22,560 INFO L414 AbstractCegarLoop]: === Iteration 18 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_invgen_heapsort_true_unreach_call_true_termination_i____VERIFIER_assertErr0AssertViolationERROR_FUNCTION]=== [2018-07-24 10:54:22,561 INFO L82 PathProgramCache]: Analyzing trace with hash 109885865, now seen corresponding path program 1 times [2018-07-24 10:54:22,561 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-07-24 10:54:22,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:22,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:22,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-24 10:54:22,562 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-24 10:54:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 25 proven. 46 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2018-07-24 10:54:23,072 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:23,072 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-07-24 10:54:23,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:23,080 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:23,112 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:23,320 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 28 proven. 7 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-07-24 10:54:23,320 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-07-24 10:54:23,462 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2018-07-24 10:54:23,482 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-24 10:54:23,483 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:54:23,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-24 10:54:23,498 INFO L288 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-07-24 10:54:23,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-24 10:54:23,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-07-24 10:54:28,143 WARN L512 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-07-24 10:54:28,144 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseSuccess(Executor.java:222) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:139) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:102) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.pop(ManagedScript.java:130) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:1106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:945) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:355) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:315) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:575) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:286) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:185) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:220) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:194) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:406) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:425) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:309) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:151) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:119) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) ... 39 more [2018-07-24 10:54:28,150 INFO L168 Benchmark]: Toolchain (without parser) took 26034.20 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -837.0 MB). Peak memory consumption was 202.2 MB. Max. memory is 7.1 GB. [2018-07-24 10:54:28,151 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-07-24 10:54:28,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-24 10:54:28,153 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 10:54:28,153 INFO L168 Benchmark]: Boogie Preprocessor took 42.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-07-24 10:54:28,154 INFO L168 Benchmark]: RCFGBuilder took 564.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -776.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-07-24 10:54:28,154 INFO L168 Benchmark]: TraceAbstraction took 25046.43 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 309.9 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -71.1 MB). Peak memory consumption was 238.7 MB. Max. memory is 7.1 GB. [2018-07-24 10:54:28,161 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 346.96 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 25.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 564.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -776.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 25046.43 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 309.9 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -71.1 MB). Peak memory consumption was 238.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/heapsort_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-24_10-54-28-177.csv Received shutdown request...