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 --rcfgbuilder.size.of.a.code.block SingleStatement --cacsl2boogietranslator.bitprecise.bitfields false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-memsafety/diff_usafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c5b1954-m [2018-10-10 14:41:23,453 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 14:41:23,455 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 14:41:23,467 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 14:41:23,467 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 14:41:23,468 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 14:41:23,470 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 14:41:23,471 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 14:41:23,475 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 14:41:23,475 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 14:41:23,476 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 14:41:23,478 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 14:41:23,484 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 14:41:23,485 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 14:41:23,490 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 14:41:23,491 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 14:41:23,491 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 14:41:23,496 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 14:41:23,498 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 14:41:23,500 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 14:41:23,501 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 14:41:23,506 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 14:41:23,510 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-10 14:41:23,525 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 14:41:23,553 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 14:41:23,554 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 14:41:23,558 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-10 14:41:23,558 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-10 14:41:23,559 INFO L133 SettingsManager]: * Use SBE=true [2018-10-10 14:41:23,559 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-10 14:41:23,559 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-10 14:41:23,559 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-10 14:41:23,560 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-10 14:41:23,560 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-10 14:41:23,560 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-10 14:41:23,560 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-10 14:41:23,560 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-10 14:41:23,560 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-10 14:41:23,561 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-10 14:41:23,561 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-10 14:41:23,561 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 14:41:23,561 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-10 14:41:23,561 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-10 14:41:23,562 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-10 14:41:23,562 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 14:41:23,562 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 14:41:23,562 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-10 14:41:23,562 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-10 14:41:23,563 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-10 14:41:23,563 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 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Bitprecise bitfields -> false [2018-10-10 14:41:23,630 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 14:41:23,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 14:41:23,652 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 14:41:23,653 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-10 14:41:23,654 INFO L276 PluginConnector]: CDTParser initialized [2018-10-10 14:41:23,655 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/diff_usafe_false-valid-deref.i [2018-10-10 14:41:23,970 INFO L217 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d23de3ae/bf664d20c8e54e0ba2280b2771ac5121/FLAGe91e117df [2018-10-10 14:41:24,171 INFO L289 CDTParser]: Found 1 translation units. [2018-10-10 14:41:24,172 INFO L157 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-memsafety/diff_usafe_false-valid-deref.i [2018-10-10 14:41:24,180 INFO L337 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d23de3ae/bf664d20c8e54e0ba2280b2771ac5121/FLAGe91e117df [2018-10-10 14:41:24,206 INFO L345 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d23de3ae/bf664d20c8e54e0ba2280b2771ac5121 [2018-10-10 14:41:24,220 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 14:41:24,224 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-10 14:41:24,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-10 14:41:24,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-10 14:41:24,231 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-10 14:41:24,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 02:41:24" (1/1) ... [2018-10-10 14:41:24,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dbf70f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:24, skipping insertion in model container [2018-10-10 14:41:24,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 02:41:24" (1/1) ... [2018-10-10 14:41:24,249 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-10 14:41:24,276 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-10 14:41:24,447 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 14:41:24,458 INFO L189 MainTranslator]: Completed pre-run [2018-10-10 14:41:24,482 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 14:41:24,499 INFO L193 MainTranslator]: Completed translation [2018-10-10 14:41:24,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:24 WrapperNode [2018-10-10 14:41:24,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-10 14:41:24,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-10 14:41:24,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-10 14:41:24,501 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-10 14:41:24,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:24" (1/1) ... [2018-10-10 14:41:24,523 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:24" (1/1) ... [2018-10-10 14:41:24,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-10 14:41:24,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 14:41:24,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 14:41:24,558 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 14:41:24,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:24" (1/1) ... [2018-10-10 14:41:24,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:24" (1/1) ... [2018-10-10 14:41:24,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:24" (1/1) ... [2018-10-10 14:41:24,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:24" (1/1) ... [2018-10-10 14:41:24,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:24" (1/1) ... [2018-10-10 14:41:24,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:24" (1/1) ... [2018-10-10 14:41:24,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:24" (1/1) ... [2018-10-10 14:41:24,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 14:41:24,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 14:41:24,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 14:41:24,605 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 14:41:24,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:24" (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 14:41:24,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 14:41:24,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 14:41:25,408 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 14:41:25,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 02:41:25 BoogieIcfgContainer [2018-10-10 14:41:25,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 14:41:25,410 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 14:41:25,410 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 14:41:25,413 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 14:41:25,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 02:41:24" (1/3) ... [2018-10-10 14:41:25,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40abe0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 02:41:25, skipping insertion in model container [2018-10-10 14:41:25,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:41:24" (2/3) ... [2018-10-10 14:41:25,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40abe0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 02:41:25, skipping insertion in model container [2018-10-10 14:41:25,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 02:41:25" (3/3) ... [2018-10-10 14:41:25,418 INFO L112 eAbstractionObserver]: Analyzing ICFG diff_usafe_false-valid-deref.i [2018-10-10 14:41:25,430 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-10 14:41:25,441 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-10-10 14:41:25,457 INFO L257 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2018-10-10 14:41:25,486 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 14:41:25,487 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 14:41:25,487 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 14:41:25,487 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-10 14:41:25,488 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 14:41:25,489 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 14:41:25,489 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 14:41:25,489 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 14:41:25,489 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 14:41:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2018-10-10 14:41:25,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-10 14:41:25,527 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:25,528 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:41:25,531 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:25,537 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:25,537 INFO L82 PathProgramCache]: Analyzing trace with hash 608851733, now seen corresponding path program 1 times [2018-10-10 14:41:25,539 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:25,540 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:25,588 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:25,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:25,589 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:41:25,696 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 14:41:25,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:41:25,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-10 14:41:25,713 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-10 14:41:25,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-10 14:41:25,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-10 14:41:25,738 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 2 states. [2018-10-10 14:41:25,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:41:25,760 INFO L93 Difference]: Finished difference Result 110 states and 113 transitions. [2018-10-10 14:41:25,761 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-10 14:41:25,762 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 34 [2018-10-10 14:41:25,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:41:25,778 INFO L225 Difference]: With dead ends: 110 [2018-10-10 14:41:25,779 INFO L226 Difference]: Without dead ends: 105 [2018-10-10 14:41:25,781 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 14:41:25,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-10-10 14:41:25,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2018-10-10 14:41:25,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-10-10 14:41:25,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 108 transitions. [2018-10-10 14:41:25,828 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 108 transitions. Word has length 34 [2018-10-10 14:41:25,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:41:25,829 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 108 transitions. [2018-10-10 14:41:25,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-10 14:41:25,829 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 108 transitions. [2018-10-10 14:41:25,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-10-10 14:41:25,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:25,830 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:41:25,831 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:25,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:25,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1601168659, now seen corresponding path program 1 times [2018-10-10 14:41:25,832 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:25,832 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:25,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:25,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:25,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:41:25,985 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 14:41:25,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:41:25,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-10 14:41:25,987 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-10 14:41:25,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-10 14:41:25,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-10 14:41:25,988 INFO L87 Difference]: Start difference. First operand 105 states and 108 transitions. Second operand 3 states. [2018-10-10 14:41:26,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:41:26,163 INFO L93 Difference]: Finished difference Result 104 states and 107 transitions. [2018-10-10 14:41:26,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-10 14:41:26,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2018-10-10 14:41:26,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:41:26,166 INFO L225 Difference]: With dead ends: 104 [2018-10-10 14:41:26,166 INFO L226 Difference]: Without dead ends: 101 [2018-10-10 14:41:26,167 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 14:41:26,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-10-10 14:41:26,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2018-10-10 14:41:26,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-10-10 14:41:26,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 104 transitions. [2018-10-10 14:41:26,179 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 104 transitions. Word has length 35 [2018-10-10 14:41:26,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:41:26,180 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 104 transitions. [2018-10-10 14:41:26,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-10 14:41:26,182 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 104 transitions. [2018-10-10 14:41:26,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-10-10 14:41:26,184 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:41:26,184 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:41:26,185 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:41:26,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:41:26,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1602004200, now seen corresponding path program 1 times [2018-10-10 14:41:26,186 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:41:26,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:41:26,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:26,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:41:26,188 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:41:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-10 14:41:26,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-10 14:41:26,267 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-10 14:41:26,310 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 02:41:26 BoogieIcfgContainer [2018-10-10 14:41:26,311 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 14:41:26,312 INFO L168 Benchmark]: Toolchain (without parser) took 2091.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -711.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2018-10-10 14:41:26,314 INFO L168 Benchmark]: CDTParser took 0.22 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 14:41:26,315 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.62 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 14:41:26,316 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.56 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 14:41:26,317 INFO L168 Benchmark]: Boogie Preprocessor took 46.14 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 14:41:26,317 INFO L168 Benchmark]: RCFGBuilder took 804.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -763.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-10-10 14:41:26,319 INFO L168 Benchmark]: TraceAbstraction took 900.97 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: 41.2 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. [2018-10-10 14:41:26,329 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 275.62 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 56.56 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 46.14 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 804.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 735.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -763.7 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 900.97 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: 41.2 MB). Peak memory consumption was 41.2 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: [L27] int *A; [L28] int Alen = __VERIFIER_nondet_int(); [L29] int *B; [L30] int Blen = __VERIFIER_nondet_int(); [L31] int *D; [L32] CALL diff(A, Alen, B, Blen, D) [L4] int k = 0; [L5] int i = 0; [L6] int l1 = Alen; [L7] int l2 = Blen; [L8] int found; [L9] COND TRUE i < l1 [L10] int j = 0; [L11] found = 0 [L12] COND TRUE j < l2 && !found [L13] CALL A[i] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 110 locations, 9 error locations. UNSAFE Result, 0.8s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 208 SDtfs, 73 SDslu, 3 SDs, 0 SdLazy, 13 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=110occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 4285 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...