java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 02:51:46,450 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 02:51:46,452 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 02:51:46,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 02:51:46,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 02:51:46,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 02:51:46,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 02:51:46,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 02:51:46,516 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 02:51:46,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 02:51:46,517 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 02:51:46,517 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 02:51:46,517 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 02:51:46,518 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 02:51:46,518 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 02:51:46,518 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 02:51:46,519 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 02:51:46,519 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 02:51:46,520 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 02:51:46,520 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 02:51:46,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 02:51:46,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 02:51:46,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 02:51:46,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 02:51:46,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 02:51:46,521 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 02:51:46,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 02:51:46,523 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 02:51:46,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 02:51:46,523 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 02:51:46,523 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 02:51:46,524 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 02:51:46,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 02:51:46,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 02:51:46,524 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 02:51:46,524 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 02:51:46,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 02:51:46,525 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 02:51:46,564 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 02:51:46,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 02:51:46,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 02:51:46,582 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 02:51:46,582 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 02:51:46,583 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi02-2.c [2019-09-10 02:51:46,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ce49454a/0cd3e3c8e6f84055ba3daf4d9282a397/FLAG9774e077a [2019-09-10 02:51:47,104 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 02:51:47,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi02-2.c [2019-09-10 02:51:47,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ce49454a/0cd3e3c8e6f84055ba3daf4d9282a397/FLAG9774e077a [2019-09-10 02:51:47,535 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ce49454a/0cd3e3c8e6f84055ba3daf4d9282a397 [2019-09-10 02:51:47,544 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 02:51:47,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 02:51:47,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 02:51:47,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 02:51:47,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 02:51:47,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:51:47" (1/1) ... [2019-09-10 02:51:47,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f59eba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:47, skipping insertion in model container [2019-09-10 02:51:47,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 02:51:47" (1/1) ... [2019-09-10 02:51:47,561 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 02:51:47,579 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 02:51:47,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:51:47,756 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 02:51:47,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 02:51:47,787 INFO L192 MainTranslator]: Completed translation [2019-09-10 02:51:47,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:47 WrapperNode [2019-09-10 02:51:47,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 02:51:47,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 02:51:47,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 02:51:47,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 02:51:47,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:47" (1/1) ... [2019-09-10 02:51:47,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:47" (1/1) ... [2019-09-10 02:51:47,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:47" (1/1) ... [2019-09-10 02:51:47,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:47" (1/1) ... [2019-09-10 02:51:47,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:47" (1/1) ... [2019-09-10 02:51:47,904 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:47" (1/1) ... [2019-09-10 02:51:47,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:47" (1/1) ... [2019-09-10 02:51:47,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 02:51:47,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 02:51:47,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 02:51:47,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 02:51:47,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:47" (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 [2019-09-10 02:51:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 02:51:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 02:51:47,957 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2019-09-10 02:51:47,958 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 02:51:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 02:51:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 02:51:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2019-09-10 02:51:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 02:51:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 02:51:47,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 02:51:48,123 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 02:51:48,123 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-10 02:51:48,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:51:48 BoogieIcfgContainer [2019-09-10 02:51:48,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 02:51:48,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 02:51:48,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 02:51:48,128 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 02:51:48,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 02:51:47" (1/3) ... [2019-09-10 02:51:48,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c69265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:51:48, skipping insertion in model container [2019-09-10 02:51:48,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 02:51:47" (2/3) ... [2019-09-10 02:51:48,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27c69265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 02:51:48, skipping insertion in model container [2019-09-10 02:51:48,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 02:51:48" (3/3) ... [2019-09-10 02:51:48,132 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2019-09-10 02:51:48,139 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 02:51:48,146 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 02:51:48,161 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 02:51:48,188 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 02:51:48,188 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 02:51:48,188 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 02:51:48,188 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 02:51:48,189 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 02:51:48,189 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 02:51:48,189 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 02:51:48,189 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 02:51:48,203 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-09-10 02:51:48,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-10 02:51:48,212 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:48,213 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:48,215 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:48,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:48,219 INFO L82 PathProgramCache]: Analyzing trace with hash 913793727, now seen corresponding path program 1 times [2019-09-10 02:51:48,221 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:48,258 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:48,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:48,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:48,259 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:48,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:48,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 02:51:48,395 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:48,396 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 02:51:48,396 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:48,401 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 02:51:48,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 02:51:48,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:51:48,419 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 5 states. [2019-09-10 02:51:48,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:48,491 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2019-09-10 02:51:48,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 02:51:48,493 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2019-09-10 02:51:48,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:48,505 INFO L225 Difference]: With dead ends: 27 [2019-09-10 02:51:48,505 INFO L226 Difference]: Without dead ends: 19 [2019-09-10 02:51:48,507 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 02:51:48,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-10 02:51:48,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-10 02:51:48,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-10 02:51:48,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2019-09-10 02:51:48,552 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2019-09-10 02:51:48,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:48,552 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2019-09-10 02:51:48,552 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 02:51:48,552 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2019-09-10 02:51:48,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-10 02:51:48,560 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 02:51:48,561 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 02:51:48,561 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 02:51:48,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 02:51:48,562 INFO L82 PathProgramCache]: Analyzing trace with hash -1998834103, now seen corresponding path program 1 times [2019-09-10 02:51:48,562 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 02:51:48,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:48,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 02:51:48,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 02:51:48,563 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 02:51:48,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 02:51:48,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-10 02:51:48,657 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 02:51:48,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-10 02:51:48,657 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 02:51:48,659 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-10 02:51:48,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-10 02:51:48,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:51:48,660 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 7 states. [2019-09-10 02:51:48,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 02:51:48,698 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2019-09-10 02:51:48,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-10 02:51:48,699 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2019-09-10 02:51:48,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 02:51:48,700 INFO L225 Difference]: With dead ends: 17 [2019-09-10 02:51:48,700 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 02:51:48,701 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-10 02:51:48,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 02:51:48,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 02:51:48,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 02:51:48,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 02:51:48,705 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2019-09-10 02:51:48,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 02:51:48,706 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 02:51:48,706 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-10 02:51:48,706 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 02:51:48,706 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 02:51:48,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 02:51:48 BoogieIcfgContainer [2019-09-10 02:51:48,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 02:51:48,719 INFO L168 Benchmark]: Toolchain (without parser) took 1170.75 ms. Allocated memory was 142.6 MB in the beginning and 201.9 MB in the end (delta: 59.2 MB). Free memory was 90.4 MB in the beginning and 136.6 MB in the end (delta: -46.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:48,721 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 142.6 MB. Free memory was 108.7 MB in the beginning and 108.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 02:51:48,723 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.48 ms. Allocated memory is still 142.6 MB. Free memory was 90.2 MB in the beginning and 81.3 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:48,725 INFO L168 Benchmark]: Boogie Preprocessor took 117.49 ms. Allocated memory was 142.6 MB in the beginning and 201.9 MB in the end (delta: 59.2 MB). Free memory was 81.1 MB in the beginning and 179.8 MB in the end (delta: -98.7 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:48,726 INFO L168 Benchmark]: RCFGBuilder took 218.45 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 168.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:48,728 INFO L168 Benchmark]: TraceAbstraction took 588.53 ms. Allocated memory is still 201.9 MB. Free memory was 168.6 MB in the beginning and 136.6 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2019-09-10 02:51:48,739 INFO L335 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 142.6 MB. Free memory was 108.7 MB in the beginning and 108.5 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 242.48 ms. Allocated memory is still 142.6 MB. Free memory was 90.2 MB in the beginning and 81.3 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.49 ms. Allocated memory was 142.6 MB in the beginning and 201.9 MB in the end (delta: 59.2 MB). Free memory was 81.1 MB in the beginning and 179.8 MB in the end (delta: -98.7 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 218.45 ms. Allocated memory is still 201.9 MB. Free memory was 179.8 MB in the beginning and 168.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 588.53 ms. Allocated memory is still 201.9 MB. Free memory was 168.6 MB in the beginning and 136.6 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 39 SDtfs, 2 SDslu, 124 SDs, 0 SdLazy, 19 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 900 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...