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/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:46:25,342 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:46:25,344 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:46:25,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-10 01:46:25,393 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 01:46:25,408 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:46:25,408 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:46:25,408 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:46:25,409 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:46:25,409 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:46:25,410 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:46:25,410 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:46:25,410 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:46:25,410 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:46:25,410 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:46:25,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:46:25,411 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:46:25,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:46:25,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:46:25,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:46:25,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:46:25,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:46:25,412 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:46:25,413 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:46:25,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:46:25,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:46:25,413 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:46:25,414 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:46:25,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:46:25,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:46:25,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:46:25,414 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:46:25,415 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:46:25,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:46:25,415 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:46:25,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:46:25,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:46:25,459 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:46:25,461 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:46:25,461 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:46:25,462 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2019-09-10 01:46:25,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/416b1938b/d40d4ae239314a5b87df834201e64ac4/FLAG7f357cd87 [2019-09-10 01:46:25,966 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:46:25,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test24-1.c [2019-09-10 01:46:25,974 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/416b1938b/d40d4ae239314a5b87df834201e64ac4/FLAG7f357cd87 [2019-09-10 01:46:26,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/416b1938b/d40d4ae239314a5b87df834201e64ac4 [2019-09-10 01:46:26,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:46:26,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:46:26,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:46:26,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:46:26,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:46:26,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:46:26" (1/1) ... [2019-09-10 01:46:26,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f22801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:26, skipping insertion in model container [2019-09-10 01:46:26,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:46:26" (1/1) ... [2019-09-10 01:46:26,403 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:46:26,420 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:46:26,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:46:26,630 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:46:26,649 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:46:26,661 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:46:26,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:26 WrapperNode [2019-09-10 01:46:26,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:46:26,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:46:26,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:46:26,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:46:26,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:26" (1/1) ... [2019-09-10 01:46:26,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:26" (1/1) ... [2019-09-10 01:46:26,769 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:26" (1/1) ... [2019-09-10 01:46:26,770 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:26" (1/1) ... [2019-09-10 01:46:26,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:26" (1/1) ... [2019-09-10 01:46:26,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:26" (1/1) ... [2019-09-10 01:46:26,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:26" (1/1) ... [2019-09-10 01:46:26,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:46:26,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:46:26,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:46:26,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:46:26,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:26" (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 01:46:26,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:46:26,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:46:26,849 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-10 01:46:26,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:46:26,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:46:26,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-10 01:46:26,849 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-10 01:46:26,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:46:26,850 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:46:26,850 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:46:26,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:46:26,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:46:26,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:46:26,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:46:27,121 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:46:27,121 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-10 01:46:27,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:46:27 BoogieIcfgContainer [2019-09-10 01:46:27,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:46:27,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:46:27,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:46:27,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:46:27,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:46:26" (1/3) ... [2019-09-10 01:46:27,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c65e773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:46:27, skipping insertion in model container [2019-09-10 01:46:27,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:46:26" (2/3) ... [2019-09-10 01:46:27,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c65e773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:46:27, skipping insertion in model container [2019-09-10 01:46:27,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:46:27" (3/3) ... [2019-09-10 01:46:27,143 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2019-09-10 01:46:27,166 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:46:27,175 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:46:27,192 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:46:27,221 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:46:27,221 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:46:27,221 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:46:27,221 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:46:27,221 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:46:27,222 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:46:27,222 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:46:27,222 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:46:27,236 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2019-09-10 01:46:27,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-09-10 01:46:27,245 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:46:27,246 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:46:27,248 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:46:27,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:46:27,254 INFO L82 PathProgramCache]: Analyzing trace with hash 149844724, now seen corresponding path program 1 times [2019-09-10 01:46:27,255 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:46:27,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:27,315 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:46:27,315 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:27,315 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:46:27,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:46:27,412 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 01:46:27,414 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:46:27,414 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:46:27,414 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:46:27,419 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:46:27,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:46:27,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:46:27,440 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2019-09-10 01:46:27,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:46:27,461 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2019-09-10 01:46:27,462 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:46:27,463 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2019-09-10 01:46:27,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:46:27,475 INFO L225 Difference]: With dead ends: 22 [2019-09-10 01:46:27,476 INFO L226 Difference]: Without dead ends: 17 [2019-09-10 01:46:27,481 INFO L628 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 [2019-09-10 01:46:27,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-09-10 01:46:27,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-09-10 01:46:27,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-09-10 01:46:27,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-09-10 01:46:27,520 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2019-09-10 01:46:27,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:46:27,521 INFO L475 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-09-10 01:46:27,521 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:46:27,521 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-09-10 01:46:27,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-10 01:46:27,522 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:46:27,523 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:46:27,523 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:46:27,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:46:27,523 INFO L82 PathProgramCache]: Analyzing trace with hash -1249419983, now seen corresponding path program 1 times [2019-09-10 01:46:27,524 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:46:27,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:27,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:46:27,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:27,528 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:46:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:46:27,657 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 01:46:27,657 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:46:27,657 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 01:46:27,658 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:46:27,660 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:46:27,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:46:27,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:46:27,661 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 4 states. [2019-09-10 01:46:27,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:46:27,719 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2019-09-10 01:46:27,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:46:27,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-09-10 01:46:27,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:46:27,721 INFO L225 Difference]: With dead ends: 19 [2019-09-10 01:46:27,722 INFO L226 Difference]: Without dead ends: 19 [2019-09-10 01:46:27,723 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:46:27,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-09-10 01:46:27,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-09-10 01:46:27,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-09-10 01:46:27,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2019-09-10 01:46:27,728 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2019-09-10 01:46:27,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:46:27,729 INFO L475 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2019-09-10 01:46:27,729 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:46:27,729 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2019-09-10 01:46:27,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-10 01:46:27,730 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:46:27,730 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:46:27,730 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:46:27,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:46:27,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1840889772, now seen corresponding path program 1 times [2019-09-10 01:46:27,731 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:46:27,732 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:27,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:46:27,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:46:27,733 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:46:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:46:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:46:27,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:46:27,904 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:46:27,905 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 19 with the following transitions: [2019-09-10 01:46:27,907 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [13], [16], [18], [23], [26], [33], [36], [37], [38], [39], [40], [42], [43] [2019-09-10 01:46:27,946 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:46:27,947 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:46:28,014 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 01:46:28,016 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 24 variables. [2019-09-10 01:46:28,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:46:28,021 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 01:46:28,054 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-10 01:46:28,054 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 01:46:28,056 INFO L420 sIntCurrentIteration]: We unified 17 AI predicates to 17 [2019-09-10 01:46:28,056 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 01:46:28,057 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 01:46:28,057 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2019-09-10 01:46:28,057 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:46:28,058 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:46:28,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:46:28,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:46:28,059 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 2 states. [2019-09-10 01:46:28,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:46:28,060 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-10 01:46:28,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:46:28,060 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2019-09-10 01:46:28,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:46:28,060 INFO L225 Difference]: With dead ends: 6 [2019-09-10 01:46:28,061 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:46:28,061 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:46:28,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:46:28,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:46:28,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:46:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:46:28,062 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2019-09-10 01:46:28,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:46:28,062 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:46:28,062 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:46:28,062 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:46:28,063 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:46:28,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:46:28 BoogieIcfgContainer [2019-09-10 01:46:28,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:46:28,069 INFO L168 Benchmark]: Toolchain (without parser) took 1682.68 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 90.6 MB in the beginning and 117.4 MB in the end (delta: -26.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:28,070 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 134.7 MB. Free memory was 109.3 MB in the beginning and 109.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-10 01:46:28,071 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.24 ms. Allocated memory is still 134.7 MB. Free memory was 90.4 MB in the beginning and 80.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:28,073 INFO L168 Benchmark]: Boogie Preprocessor took 124.91 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 80.2 MB in the beginning and 177.7 MB in the end (delta: -97.5 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:28,074 INFO L168 Benchmark]: RCFGBuilder took 335.60 ms. Allocated memory is still 201.9 MB. Free memory was 177.7 MB in the beginning and 163.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:28,075 INFO L168 Benchmark]: TraceAbstraction took 935.54 ms. Allocated memory is still 201.9 MB. Free memory was 163.4 MB in the beginning and 117.4 MB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:46:28,079 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 134.7 MB. Free memory was 109.3 MB in the beginning and 109.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.24 ms. Allocated memory is still 134.7 MB. Free memory was 90.4 MB in the beginning and 80.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.91 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 80.2 MB in the beginning and 177.7 MB in the end (delta: -97.5 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 335.60 ms. Allocated memory is still 201.9 MB. Free memory was 177.7 MB in the beginning and 163.9 MB in the end (delta: 13.8 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 935.54 ms. Allocated memory is still 201.9 MB. Free memory was 163.4 MB in the beginning and 117.4 MB in the end (delta: 46.0 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: 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, 22 locations, 1 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 43 SDtfs, 1 SDslu, 23 SDs, 0 SdLazy, 12 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.8970588235294118 AbsIntWeakeningRatio, 1.5294117647058822 AbsIntAvgWeakeningVarsNumRemoved, 0.35294117647058826 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 46 ConstructedInterpolants, 0 QuantifiedInterpolants, 1434 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...