java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --traceabstraction.dump.automata.to.the.following.directory dump -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-memsafety/bubblesort_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c5b1954-m [2018-10-10 11:24:16,698 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 11:24:16,700 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 11:24:16,713 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 11:24:16,713 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 11:24:16,714 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 11:24:16,715 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 11:24:16,718 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 11:24:16,720 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 11:24:16,721 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 11:24:16,722 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 11:24:16,722 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 11:24:16,723 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 11:24:16,724 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 11:24:16,725 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 11:24:16,726 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 11:24:16,727 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 11:24:16,729 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 11:24:16,731 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 11:24:16,733 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 11:24:16,734 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 11:24:16,736 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 11:24:16,738 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 11:24:16,748 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2018-10-10 11:24:16,764 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 11:24:16,765 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 11:24:16,766 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-10 11:24:16,766 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-10 11:24:16,767 INFO L133 SettingsManager]: * Use SBE=true [2018-10-10 11:24:16,767 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-10 11:24:16,767 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-10 11:24:16,767 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-10 11:24:16,767 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-10 11:24:16,768 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-10 11:24:16,768 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-10 11:24:16,768 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-10 11:24:16,768 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-10 11:24:16,769 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-10 11:24:16,769 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-10 11:24:16,769 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-10 11:24:16,769 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 11:24:16,770 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-10 11:24:16,770 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-10 11:24:16,770 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-10 11:24:16,770 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 11:24:16,770 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 11:24:16,771 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-10 11:24:16,771 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-10 11:24:16,771 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-10 11:24:16,771 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Dump automata to the following directory -> dump [2018-10-10 11:24:16,831 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 11:24:16,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 11:24:16,857 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 11:24:16,859 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-10 11:24:16,863 INFO L276 PluginConnector]: CDTParser initialized [2018-10-10 11:24:16,863 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/bubblesort_unsafe_false-valid-deref.i [2018-10-10 11:24:17,180 INFO L217 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1fdef2e6/59257a8fcfc74f1ea1614aab493e3035/FLAG52b81368b [2018-10-10 11:24:17,392 INFO L289 CDTParser]: Found 1 translation units. [2018-10-10 11:24:17,393 INFO L157 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-memsafety/bubblesort_unsafe_false-valid-deref.i [2018-10-10 11:24:17,400 INFO L337 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1fdef2e6/59257a8fcfc74f1ea1614aab493e3035/FLAG52b81368b [2018-10-10 11:24:17,423 INFO L345 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1fdef2e6/59257a8fcfc74f1ea1614aab493e3035 [2018-10-10 11:24:17,435 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 11:24:17,437 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-10 11:24:17,438 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-10 11:24:17,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-10 11:24:17,442 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-10 11:24:17,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:24:17" (1/1) ... [2018-10-10 11:24:17,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b70a9aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:17, skipping insertion in model container [2018-10-10 11:24:17,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:24:17" (1/1) ... [2018-10-10 11:24:17,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-10 11:24:17,476 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-10 11:24:17,643 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 11:24:17,663 INFO L189 MainTranslator]: Completed pre-run [2018-10-10 11:24:17,686 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 11:24:17,706 INFO L193 MainTranslator]: Completed translation [2018-10-10 11:24:17,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:17 WrapperNode [2018-10-10 11:24:17,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-10 11:24:17,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-10 11:24:17,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-10 11:24:17,708 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-10 11:24:17,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:17" (1/1) ... [2018-10-10 11:24:17,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:17" (1/1) ... [2018-10-10 11:24:17,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-10 11:24:17,768 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 11:24:17,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 11:24:17,768 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 11:24:17,779 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:17" (1/1) ... [2018-10-10 11:24:17,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:17" (1/1) ... [2018-10-10 11:24:17,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:17" (1/1) ... [2018-10-10 11:24:17,784 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:17" (1/1) ... [2018-10-10 11:24:17,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:17" (1/1) ... [2018-10-10 11:24:17,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:17" (1/1) ... [2018-10-10 11:24:17,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:17" (1/1) ... [2018-10-10 11:24:17,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 11:24:17,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 11:24:17,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 11:24:17,812 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 11:24:17,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 11:24:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 11:24:17,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 11:24:18,557 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 11:24:18,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:24:18 BoogieIcfgContainer [2018-10-10 11:24:18,558 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 11:24:18,559 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 11:24:18,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 11:24:18,562 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 11:24:18,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 11:24:17" (1/3) ... [2018-10-10 11:24:18,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2187b2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:24:18, skipping insertion in model container [2018-10-10 11:24:18,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:24:17" (2/3) ... [2018-10-10 11:24:18,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2187b2d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:24:18, skipping insertion in model container [2018-10-10 11:24:18,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:24:18" (3/3) ... [2018-10-10 11:24:18,567 INFO L112 eAbstractionObserver]: Analyzing ICFG bubblesort_unsafe_false-valid-deref.i [2018-10-10 11:24:18,576 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-10 11:24:18,585 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-10-10 11:24:18,600 INFO L257 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2018-10-10 11:24:18,625 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 11:24:18,626 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 11:24:18,626 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 11:24:18,626 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-10 11:24:18,626 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 11:24:18,626 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 11:24:18,627 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 11:24:18,627 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 11:24:18,627 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 11:24:18,643 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-10-10 11:24:18,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-10 11:24:18,652 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:24:18,653 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-10-10 11:24:18,656 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:24:18,662 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:24:18,662 INFO L82 PathProgramCache]: Analyzing trace with hash 28745400, now seen corresponding path program 1 times [2018-10-10 11:24:18,665 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 11:24:18,665 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 11:24:18,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:24:18,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:24:18,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:24:18,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:24:18,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 11:24:18,803 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:24:18,804 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-10 11:24:18,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-10 11:24:18,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-10 11:24:18,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-10 11:24:18,827 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2018-10-10 11:24:18,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:24:18,845 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2018-10-10 11:24:18,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-10 11:24:18,847 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2018-10-10 11:24:18,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:24:18,858 INFO L225 Difference]: With dead ends: 38 [2018-10-10 11:24:18,859 INFO L226 Difference]: Without dead ends: 36 [2018-10-10 11:24:18,861 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-10 11:24:18,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-10-10 11:24:18,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-10 11:24:18,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-10 11:24:18,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-10-10 11:24:18,899 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 5 [2018-10-10 11:24:18,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:24:18,900 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-10-10 11:24:18,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-10 11:24:18,900 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-10-10 11:24:18,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-10 11:24:18,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:24:18,901 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-10 11:24:18,901 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:24:18,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:24:18,902 INFO L82 PathProgramCache]: Analyzing trace with hash 889540008, now seen corresponding path program 1 times [2018-10-10 11:24:18,902 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 11:24:18,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 11:24:18,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:24:18,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:24:18,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:24:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:24:18,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 11:24:18,948 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:24:18,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-10 11:24:18,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 11:24:18,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 11:24:18,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 11:24:18,951 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 3 states. [2018-10-10 11:24:19,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:24:19,050 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-10-10 11:24:19,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 11:24:19,054 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-10-10 11:24:19,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:24:19,055 INFO L225 Difference]: With dead ends: 35 [2018-10-10 11:24:19,055 INFO L226 Difference]: Without dead ends: 33 [2018-10-10 11:24:19,057 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 11:24:19,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-10-10 11:24:19,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-10-10 11:24:19,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-10-10 11:24:19,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2018-10-10 11:24:19,066 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 6 [2018-10-10 11:24:19,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:24:19,066 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2018-10-10 11:24:19,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 11:24:19,067 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2018-10-10 11:24:19,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-10 11:24:19,068 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:24:19,068 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:24:19,069 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:24:19,069 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:24:19,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1805952520, now seen corresponding path program 1 times [2018-10-10 11:24:19,070 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 11:24:19,070 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 11:24:19,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:24:19,071 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:24:19,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 11:24:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-10 11:24:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-10 11:24:19,143 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-10 11:24:19,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 11:24:19 BoogieIcfgContainer [2018-10-10 11:24:19,167 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 11:24:19,168 INFO L168 Benchmark]: Toolchain (without parser) took 1731.79 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.8 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -722.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 11:24:19,170 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 11:24:19,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-10 11:24:19,172 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.46 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 11:24:19,172 INFO L168 Benchmark]: Boogie Preprocessor took 43.68 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 11:24:19,173 INFO L168 Benchmark]: RCFGBuilder took 746.08 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -760.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-10-10 11:24:19,174 INFO L168 Benchmark]: TraceAbstraction took 608.19 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2018-10-10 11:24:19,179 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 269.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.46 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 43.68 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 746.08 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 719.8 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -760.9 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 608.19 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L16] int* numbers; [L17] int array_size = __VERIFIER_nondet_int(); [L18] CALL bubbleSort(numbers, array_size) [L4] int i, j, temp; [L5] i = (array_size - 1) [L5] COND TRUE i >= 0 [L6] j = 1 [L6] COND TRUE j <= i [L7] CALL numbers[j-1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 13 error locations. UNSAFE Result, 0.5s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 59 SDtfs, 32 SDslu, 0 SDs, 0 SdLazy, 19 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...