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/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:26:26,334 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:26:26,336 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:26:26,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-20 13:26:26,383 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:26:26,384 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:26:26,385 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:26:26,386 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 [2019-09-20 13:26:26,402 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:26:26,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:26:26,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:26:26,403 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:26:26,403 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:26:26,403 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:26:26,404 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:26:26,404 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:26:26,404 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:26:26,404 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:26:26,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:26:26,405 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:26:26,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:26:26,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:26:26,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:26:26,406 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:26:26,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:26:26,406 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:26:26,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:26:26,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:26:26,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:26:26,407 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:26:26,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:26:26,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:26:26,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:26:26,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:26:26,408 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:26:26,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:26:26,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:26:26,409 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:26:26,437 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:26:26,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:26:26,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:26:26,461 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:26:26,461 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:26:26,463 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2019-09-20 13:26:26,533 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e901682d5/4ecc5f8fb31b4ec99dfd8c9b29d56285/FLAG0a28961c4 [2019-09-20 13:26:27,012 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:26:27,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2019-09-20 13:26:27,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e901682d5/4ecc5f8fb31b4ec99dfd8c9b29d56285/FLAG0a28961c4 [2019-09-20 13:26:27,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e901682d5/4ecc5f8fb31b4ec99dfd8c9b29d56285 [2019-09-20 13:26:27,398 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:26:27,399 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:26:27,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:26:27,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:26:27,405 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:26:27,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:27" (1/1) ... [2019-09-20 13:26:27,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cca2c2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:27, skipping insertion in model container [2019-09-20 13:26:27,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:26:27" (1/1) ... [2019-09-20 13:26:27,418 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:26:27,439 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:26:27,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:26:27,720 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:26:27,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:26:27,926 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:26:27,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:27 WrapperNode [2019-09-20 13:26:27,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:26:27,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:26:27,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:26:27,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:26:27,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:27" (1/1) ... [2019-09-20 13:26:27,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:27" (1/1) ... [2019-09-20 13:26:27,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:27" (1/1) ... [2019-09-20 13:26:27,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:27" (1/1) ... [2019-09-20 13:26:27,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:27" (1/1) ... [2019-09-20 13:26:27,993 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:27" (1/1) ... [2019-09-20 13:26:27,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:27" (1/1) ... [2019-09-20 13:26:28,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:26:28,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:26:28,002 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:26:28,002 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:26:28,003 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:27" (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 [2019-09-20 13:26:28,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:26:28,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:26:28,070 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 13:26:28,071 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2019-09-20 13:26:28,071 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2019-09-20 13:26:28,071 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:26:28,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:26:28,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 13:26:28,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:26:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2019-09-20 13:26:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:26:28,072 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2019-09-20 13:26:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:26:28,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:26:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:26:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:26:28,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:26:28,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:26:28,489 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:26:28,490 INFO L283 CfgBuilder]: Removed 10 assume(true) statements. [2019-09-20 13:26:28,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:28 BoogieIcfgContainer [2019-09-20 13:26:28,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:26:28,492 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:26:28,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:26:28,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:26:28,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:26:27" (1/3) ... [2019-09-20 13:26:28,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6faa0e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:28, skipping insertion in model container [2019-09-20 13:26:28,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:26:27" (2/3) ... [2019-09-20 13:26:28,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6faa0e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:26:28, skipping insertion in model container [2019-09-20 13:26:28,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:26:28" (3/3) ... [2019-09-20 13:26:28,499 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2019-09-20 13:26:28,509 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:26:28,521 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:26:28,537 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:26:28,564 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:26:28,564 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:26:28,564 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:26:28,565 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:26:28,565 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:26:28,565 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:26:28,565 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:26:28,566 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:26:28,583 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2019-09-20 13:26:28,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-09-20 13:26:28,593 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:28,594 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:26:28,596 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:28,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:28,601 INFO L82 PathProgramCache]: Analyzing trace with hash 528217166, now seen corresponding path program 1 times [2019-09-20 13:26:28,603 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:28,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:28,655 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:28,655 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:28,655 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:28,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:26:28,768 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:26:28,769 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:26:28,769 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:26:28,774 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:26:28,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:26:28,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:26:28,789 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 3 states. [2019-09-20 13:26:28,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:28,896 INFO L93 Difference]: Finished difference Result 97 states and 124 transitions. [2019-09-20 13:26:28,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:26:28,898 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-09-20 13:26:28,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:28,909 INFO L225 Difference]: With dead ends: 97 [2019-09-20 13:26:28,909 INFO L226 Difference]: Without dead ends: 89 [2019-09-20 13:26:28,911 INFO L636 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 [2019-09-20 13:26:28,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2019-09-20 13:26:28,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 57. [2019-09-20 13:26:28,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-09-20 13:26:28,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2019-09-20 13:26:28,959 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 14 [2019-09-20 13:26:28,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:28,960 INFO L475 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2019-09-20 13:26:28,960 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:26:28,960 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2019-09-20 13:26:28,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-20 13:26:28,961 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:26:28,961 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:26:28,962 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:26:28,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:28,962 INFO L82 PathProgramCache]: Analyzing trace with hash 396779504, now seen corresponding path program 1 times [2019-09-20 13:26:28,962 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:26:28,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:28,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:26:28,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:26:28,965 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:26:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:26:29,047 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:26:29,047 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:26:29,047 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:26:29,048 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 17 with the following transitions: [2019-09-20 13:26:29,050 INFO L207 CegarAbsIntRunner]: [20], [21], [27], [33], [35], [37], [41], [49], [57], [164], [167], [169], [175], [176], [177], [179] [2019-09-20 13:26:29,088 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:26:29,088 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:26:29,156 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:26:29,157 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 16 root evaluator evaluations with a maximum evaluation depth of 0. Performed 16 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 21 variables. [2019-09-20 13:26:29,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:26:29,160 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:26:29,196 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-20 13:26:29,197 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:26:29,199 INFO L420 sIntCurrentIteration]: We unified 15 AI predicates to 15 [2019-09-20 13:26:29,199 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:26:29,200 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:26:29,200 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-09-20 13:26:29,200 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:26:29,201 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:26:29,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:26:29,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:26:29,202 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand 2 states. [2019-09-20 13:26:29,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:26:29,203 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-20 13:26:29,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:26:29,203 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-09-20 13:26:29,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:26:29,204 INFO L225 Difference]: With dead ends: 6 [2019-09-20 13:26:29,204 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:26:29,205 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:26:29,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:26:29,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:26:29,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:26:29,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:26:29,206 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-09-20 13:26:29,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:26:29,207 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:26:29,207 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:26:29,207 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:26:29,207 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:26:29,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:26:29 BoogieIcfgContainer [2019-09-20 13:26:29,214 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:26:29,217 INFO L168 Benchmark]: Toolchain (without parser) took 1816.52 ms. Allocated memory was 135.8 MB in the beginning and 197.1 MB in the end (delta: 61.3 MB). Free memory was 83.5 MB in the beginning and 107.5 MB in the end (delta: -24.0 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:29,219 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 135.8 MB. Free memory was 101.8 MB in the beginning and 101.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-20 13:26:29,221 INFO L168 Benchmark]: CACSL2BoogieTranslator took 526.68 ms. Allocated memory was 135.8 MB in the beginning and 197.1 MB in the end (delta: 61.3 MB). Free memory was 83.3 MB in the beginning and 173.9 MB in the end (delta: -90.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:29,222 INFO L168 Benchmark]: Boogie Preprocessor took 72.97 ms. Allocated memory is still 197.1 MB. Free memory was 173.9 MB in the beginning and 171.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:29,223 INFO L168 Benchmark]: RCFGBuilder took 490.07 ms. Allocated memory is still 197.1 MB. Free memory was 171.3 MB in the beginning and 148.5 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:29,224 INFO L168 Benchmark]: TraceAbstraction took 721.61 ms. Allocated memory is still 197.1 MB. Free memory was 147.9 MB in the beginning and 107.5 MB in the end (delta: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2019-09-20 13:26:29,228 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 135.8 MB. Free memory was 101.8 MB in the beginning and 101.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 526.68 ms. Allocated memory was 135.8 MB in the beginning and 197.1 MB in the end (delta: 61.3 MB). Free memory was 83.3 MB in the beginning and 173.9 MB in the end (delta: -90.6 MB). Peak memory consumption was 20.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.97 ms. Allocated memory is still 197.1 MB. Free memory was 173.9 MB in the beginning and 171.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 490.07 ms. Allocated memory is still 197.1 MB. Free memory was 171.3 MB in the beginning and 148.5 MB in the end (delta: 22.8 MB). Peak memory consumption was 22.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 721.61 ms. Allocated memory is still 197.1 MB. Free memory was 147.9 MB in the beginning and 107.5 MB in the end (delta: 40.4 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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 6 procedures, 61 locations, 1 error locations. SAFE Result, 0.6s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 74 SDtfs, 33 SDslu, 55 SDs, 0 SdLazy, 29 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 0.9166666666666666 AbsIntWeakeningRatio, 0.9333333333333333 AbsIntAvgWeakeningVarsNumRemoved, 0.4 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 32 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 510 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...