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_Bitvector.epf -i ../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c5b1954-m [2018-10-10 11:30:07,726 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 11:30:07,728 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 11:30:07,746 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 11:30:07,747 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 11:30:07,749 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 11:30:07,750 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 11:30:07,753 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 11:30:07,755 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 11:30:07,756 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 11:30:07,764 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 11:30:07,764 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 11:30:07,768 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 11:30:07,769 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 11:30:07,773 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 11:30:07,774 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 11:30:07,777 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 11:30:07,779 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 11:30:07,781 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 11:30:07,787 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 11:30:07,790 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 11:30:07,791 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 11:30:07,799 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 11:30:07,800 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 11:30:07,800 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 11:30:07,801 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 11:30:07,804 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 11:30:07,805 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 11:30:07,808 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 11:30:07,809 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 11:30:07,809 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 11:30:07,811 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-10 11:30:07,811 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-10 11:30:07,811 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-10 11:30:07,812 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-10 11:30:07,815 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-10 11:30:07,815 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2018-10-10 11:30:07,841 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 11:30:07,841 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 11:30:07,844 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-10 11:30:07,844 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-10 11:30:07,844 INFO L133 SettingsManager]: * Use SBE=true [2018-10-10 11:30:07,844 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-10 11:30:07,844 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-10 11:30:07,846 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-10 11:30:07,846 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-10 11:30:07,846 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-10 11:30:07,846 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-10 11:30:07,846 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-10 11:30:07,847 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-10 11:30:07,847 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-10 11:30:07,847 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-10 11:30:07,847 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-10-10 11:30:07,848 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-10-10 11:30:07,848 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-10 11:30:07,848 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 11:30:07,848 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-10 11:30:07,848 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-10 11:30:07,849 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-10 11:30:07,849 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 11:30:07,850 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 11:30:07,850 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-10 11:30:07,851 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-10-10 11:30:07,851 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-10 11:30:07,851 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-10-10 11:30:07,851 INFO L133 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Dump automata to the following directory -> dump [2018-10-10 11:30:07,917 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 11:30:07,930 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 11:30:07,934 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 11:30:07,936 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-10 11:30:07,936 INFO L276 PluginConnector]: CDTParser initialized [2018-10-10 11:30:07,937 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-10-10 11:30:08,262 INFO L217 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa0576968/4866c88078cf413a8959f2f5a09925c8/FLAGaf308838e [2018-10-10 11:30:08,498 INFO L289 CDTParser]: Found 1 translation units. [2018-10-10 11:30:08,498 INFO L157 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-memsafety/selectionsort_unsafe_false-valid-deref.i [2018-10-10 11:30:08,505 INFO L337 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa0576968/4866c88078cf413a8959f2f5a09925c8/FLAGaf308838e [2018-10-10 11:30:08,520 INFO L345 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa0576968/4866c88078cf413a8959f2f5a09925c8 [2018-10-10 11:30:08,532 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 11:30:08,533 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-10 11:30:08,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-10 11:30:08,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-10 11:30:08,539 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-10 11:30:08,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:30:08" (1/1) ... [2018-10-10 11:30:08,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e0a63a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:08, skipping insertion in model container [2018-10-10 11:30:08,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 11:30:08" (1/1) ... [2018-10-10 11:30:08,554 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-10 11:30:08,576 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-10 11:30:08,784 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 11:30:08,807 INFO L189 MainTranslator]: Completed pre-run [2018-10-10 11:30:08,834 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 11:30:08,856 INFO L193 MainTranslator]: Completed translation [2018-10-10 11:30:08,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:08 WrapperNode [2018-10-10 11:30:08,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-10 11:30:08,858 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-10 11:30:08,858 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-10 11:30:08,859 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-10 11:30:08,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:08" (1/1) ... [2018-10-10 11:30:08,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:08" (1/1) ... [2018-10-10 11:30:08,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-10 11:30:08,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 11:30:08,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 11:30:08,919 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 11:30:08,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:08" (1/1) ... [2018-10-10 11:30:08,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:08" (1/1) ... [2018-10-10 11:30:08,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:08" (1/1) ... [2018-10-10 11:30:08,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:08" (1/1) ... [2018-10-10 11:30:08,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:08" (1/1) ... [2018-10-10 11:30:08,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:08" (1/1) ... [2018-10-10 11:30:08,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:08" (1/1) ... [2018-10-10 11:30:08,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 11:30:08,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 11:30:08,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 11:30:08,979 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 11:30:08,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:08" (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 11:30:09,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 11:30:09,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 11:30:09,700 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 11:30:09,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:30:09 BoogieIcfgContainer [2018-10-10 11:30:09,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 11:30:09,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 11:30:09,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 11:30:09,705 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 11:30:09,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 11:30:08" (1/3) ... [2018-10-10 11:30:09,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c5af58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:30:09, skipping insertion in model container [2018-10-10 11:30:09,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 11:30:08" (2/3) ... [2018-10-10 11:30:09,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64c5af58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 11:30:09, skipping insertion in model container [2018-10-10 11:30:09,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 11:30:09" (3/3) ... [2018-10-10 11:30:09,709 INFO L112 eAbstractionObserver]: Analyzing ICFG selectionsort_unsafe_false-valid-deref.i [2018-10-10 11:30:09,720 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-10 11:30:09,728 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-10-10 11:30:09,746 INFO L257 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2018-10-10 11:30:09,776 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 11:30:09,777 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 11:30:09,777 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 11:30:09,777 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-10 11:30:09,777 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 11:30:09,778 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 11:30:09,778 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 11:30:09,778 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 11:30:09,778 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 11:30:09,795 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2018-10-10 11:30:09,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2018-10-10 11:30:09,804 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:09,805 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2018-10-10 11:30:09,808 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:09,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:09,815 INFO L82 PathProgramCache]: Analyzing trace with hash 28747386, now seen corresponding path program 1 times [2018-10-10 11:30:09,820 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:09,821 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:30:09,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:09,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:09,885 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:09,901 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 11:30:09,901 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:30:09,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:30:09,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-10 11:30:09,917 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-10 11:30:09,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-10 11:30:09,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-10 11:30:09,933 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2018-10-10 11:30:09,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:30:09,948 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-10-10 11:30:09,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-10 11:30:09,950 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2018-10-10 11:30:09,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:30:09,962 INFO L225 Difference]: With dead ends: 39 [2018-10-10 11:30:09,962 INFO L226 Difference]: Without dead ends: 37 [2018-10-10 11:30:09,964 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 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 11:30:09,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-10-10 11:30:10,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-10-10 11:30:10,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-10 11:30:10,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2018-10-10 11:30:10,004 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 5 [2018-10-10 11:30:10,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:30:10,005 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2018-10-10 11:30:10,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-10 11:30:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2018-10-10 11:30:10,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-10 11:30:10,005 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:10,006 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-10 11:30:10,006 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:10,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:10,007 INFO L82 PathProgramCache]: Analyzing trace with hash 889540072, now seen corresponding path program 1 times [2018-10-10 11:30:10,007 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:10,007 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:30:10,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:10,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 11:30:10,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 11:30:10,079 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 11:30:10,079 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-10-10 11:30:10,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 11:30:10,083 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-10 11:30:10,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 11:30:10,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 11:30:10,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 11:30:10,087 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 3 states. [2018-10-10 11:30:10,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 11:30:10,285 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2018-10-10 11:30:10,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 11:30:10,286 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2018-10-10 11:30:10,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 11:30:10,287 INFO L225 Difference]: With dead ends: 36 [2018-10-10 11:30:10,287 INFO L226 Difference]: Without dead ends: 34 [2018-10-10 11:30:10,288 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 11:30:10,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-10-10 11:30:10,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-10-10 11:30:10,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-10 11:30:10,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-10-10 11:30:10,293 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 6 [2018-10-10 11:30:10,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 11:30:10,294 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-10-10 11:30:10,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 11:30:10,294 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-10-10 11:30:10,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-10 11:30:10,295 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 11:30:10,295 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-10 11:30:10,296 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 11:30:10,296 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 11:30:10,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1805952520, now seen corresponding path program 1 times [2018-10-10 11:30:10,296 INFO L227 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-10-10 11:30:10,297 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-10-10 11:30:10,317 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 11:30:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-10 11:30:10,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-10 11:30:10,395 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-10 11:30:10,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 11:30:10 BoogieIcfgContainer [2018-10-10 11:30:10,423 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 11:30:10,424 INFO L168 Benchmark]: Toolchain (without parser) took 1891.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -718.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2018-10-10 11:30:10,426 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 11:30:10,427 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.17 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 11:30:10,428 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.86 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 11:30:10,429 INFO L168 Benchmark]: Boogie Preprocessor took 60.53 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 11:30:10,429 INFO L168 Benchmark]: RCFGBuilder took 722.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -781.0 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-10-10 11:30:10,431 INFO L168 Benchmark]: TraceAbstraction took 721.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 MB. Max. memory is 7.1 GB. [2018-10-10 11:30:10,436 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.17 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 58.86 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 60.53 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 722.89 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -781.0 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 721.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 52.1 MB). Peak memory consumption was 52.1 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: [L20] int *a; [L21] int array_size = __VERIFIER_nondet_int(); [L22] CALL SelectionSort(a, array_size) [L4] int i; [L5] i = 0 [L5] COND TRUE i < array_size - 1 [L7] int j, min, temp; [L8] min = i [L9] j = i+1 [L9] COND TRUE j < array_size [L11] CALL a[j] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 13 error locations. UNSAFE Result, 0.6s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 61 SDtfs, 33 SDslu, 0 SDs, 0 SdLazy, 19 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 33 ConjunctsInSsa, 3 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...