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/stroeder1-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c5b1954-m [2018-10-10 14:42:42,223 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-10 14:42:42,228 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-10 14:42:42,245 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-10 14:42:42,245 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-10 14:42:42,247 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-10 14:42:42,248 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-10 14:42:42,251 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-10 14:42:42,253 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-10 14:42:42,254 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-10 14:42:42,255 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-10 14:42:42,256 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-10 14:42:42,258 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-10 14:42:42,260 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-10 14:42:42,262 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-10 14:42:42,263 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-10 14:42:42,264 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-10 14:42:42,272 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-10 14:42:42,275 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-10 14:42:42,276 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-10 14:42:42,279 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-10 14:42:42,281 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-10 14:42:42,285 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-10 14:42:42,285 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-10 14:42:42,285 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-10 14:42:42,286 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-10 14:42:42,287 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-10 14:42:42,288 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-10 14:42:42,289 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-10 14:42:42,293 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-10 14:42:42,293 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-10 14:42:42,294 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-10 14:42:42,298 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 14:42:42,324 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-10 14:42:42,324 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-10 14:42:42,326 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-10 14:42:42,326 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-10 14:42:42,327 INFO L133 SettingsManager]: * Use SBE=true [2018-10-10 14:42:42,327 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-10 14:42:42,327 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-10 14:42:42,327 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-10 14:42:42,328 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-10 14:42:42,328 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-10 14:42:42,328 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-10 14:42:42,328 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-10-10 14:42:42,328 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-10-10 14:42:42,329 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-10-10 14:42:42,331 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-10 14:42:42,331 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-10 14:42:42,332 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-10 14:42:42,332 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-10 14:42:42,332 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-10 14:42:42,332 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-10 14:42:42,332 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-10 14:42:42,333 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-10 14:42:42,333 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-10 14:42:42,333 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-10 14:42:42,333 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-10 14:42:42,333 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 14:42:42,410 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-10 14:42:42,424 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-10 14:42:42,427 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-10 14:42:42,429 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-10 14:42:42,429 INFO L276 PluginConnector]: CDTParser initialized [2018-10-10 14:42:42,431 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/stroeder1-alloca_true-valid-memsafety_true-termination.i [2018-10-10 14:42:42,732 INFO L217 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c56e5ec00/09091b4b98d44a40be3574cb1b07ac52/FLAGd63824b42 [2018-10-10 14:42:43,034 INFO L289 CDTParser]: Found 1 translation units. [2018-10-10 14:42:43,035 INFO L157 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-memsafety/stroeder1-alloca_true-valid-memsafety_true-termination.i [2018-10-10 14:42:43,049 INFO L337 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c56e5ec00/09091b4b98d44a40be3574cb1b07ac52/FLAGd63824b42 [2018-10-10 14:42:43,062 INFO L345 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c56e5ec00/09091b4b98d44a40be3574cb1b07ac52 [2018-10-10 14:42:43,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-10 14:42:43,073 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-10 14:42:43,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-10 14:42:43,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-10 14:42:43,078 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-10 14:42:43,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 02:42:43" (1/1) ... [2018-10-10 14:42:43,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b49186 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:43, skipping insertion in model container [2018-10-10 14:42:43,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.10 02:42:43" (1/1) ... [2018-10-10 14:42:43,092 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-10 14:42:43,152 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-10 14:42:43,408 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 14:42:43,420 INFO L189 MainTranslator]: Completed pre-run [2018-10-10 14:42:43,490 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-10 14:42:43,564 INFO L193 MainTranslator]: Completed translation [2018-10-10 14:42:43,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:43 WrapperNode [2018-10-10 14:42:43,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-10 14:42:43,566 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-10 14:42:43,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-10 14:42:43,567 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-10 14:42:43,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:43" (1/1) ... [2018-10-10 14:42:43,600 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:43" (1/1) ... [2018-10-10 14:42:43,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-10 14:42:43,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-10 14:42:43,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-10 14:42:43,631 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-10 14:42:43,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:43" (1/1) ... [2018-10-10 14:42:43,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:43" (1/1) ... [2018-10-10 14:42:43,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:43" (1/1) ... [2018-10-10 14:42:43,652 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:43" (1/1) ... [2018-10-10 14:42:43,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:43" (1/1) ... [2018-10-10 14:42:43,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:43" (1/1) ... [2018-10-10 14:42:43,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:43" (1/1) ... [2018-10-10 14:42:43,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-10 14:42:43,749 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-10 14:42:43,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-10 14:42:43,750 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-10 14:42:43,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:43" (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 14:42:43,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-10 14:42:43,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-10 14:42:44,311 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-10 14:42:44,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 02:42:44 BoogieIcfgContainer [2018-10-10 14:42:44,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-10 14:42:44,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-10 14:42:44,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-10 14:42:44,317 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-10 14:42:44,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.10 02:42:43" (1/3) ... [2018-10-10 14:42:44,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e54e528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 02:42:44, skipping insertion in model container [2018-10-10 14:42:44,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.10 02:42:43" (2/3) ... [2018-10-10 14:42:44,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e54e528 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.10 02:42:44, skipping insertion in model container [2018-10-10 14:42:44,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.10 02:42:44" (3/3) ... [2018-10-10 14:42:44,321 INFO L112 eAbstractionObserver]: Analyzing ICFG stroeder1-alloca_true-valid-memsafety_true-termination.i [2018-10-10 14:42:44,330 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-10 14:42:44,337 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-10-10 14:42:44,355 INFO L257 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2018-10-10 14:42:44,383 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-10 14:42:44,384 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-10 14:42:44,384 INFO L383 AbstractCegarLoop]: Hoare is false [2018-10-10 14:42:44,385 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-10 14:42:44,385 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-10 14:42:44,385 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-10 14:42:44,385 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-10 14:42:44,386 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-10 14:42:44,386 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-10 14:42:44,404 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2018-10-10 14:42:44,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-10-10 14:42:44,414 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:42:44,415 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, 1, 1, 1, 1] [2018-10-10 14:42:44,418 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:42:44,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:42:44,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1290727656, now seen corresponding path program 1 times [2018-10-10 14:42:44,427 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:42:44,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:42:44,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:44,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:44,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:45,022 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 14:42:45,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:42:45,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-10 14:42:45,029 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 14:42:45,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 14:42:45,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-10-10 14:42:45,049 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 9 states. [2018-10-10 14:42:45,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:42:45,669 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2018-10-10 14:42:45,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-10 14:42:45,671 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 43 [2018-10-10 14:42:45,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:42:45,682 INFO L225 Difference]: With dead ends: 93 [2018-10-10 14:42:45,682 INFO L226 Difference]: Without dead ends: 88 [2018-10-10 14:42:45,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2018-10-10 14:42:45,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-10-10 14:42:45,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 72. [2018-10-10 14:42:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-10-10 14:42:45,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2018-10-10 14:42:45,722 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 43 [2018-10-10 14:42:45,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:42:45,723 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2018-10-10 14:42:45,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 14:42:45,723 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2018-10-10 14:42:45,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-10-10 14:42:45,725 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:42:45,725 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, 1, 1, 1, 1, 1] [2018-10-10 14:42:45,725 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:42:45,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:42:45,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1357851583, now seen corresponding path program 1 times [2018-10-10 14:42:45,726 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:42:45,726 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:42:45,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:45,727 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:45,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:46,450 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 14:42:46,450 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:42:46,450 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-10-10 14:42:46,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-10 14:42:46,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-10 14:42:46,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2018-10-10 14:42:46,453 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 14 states. [2018-10-10 14:42:47,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:42:47,817 INFO L93 Difference]: Finished difference Result 127 states and 128 transitions. [2018-10-10 14:42:47,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-10 14:42:47,818 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 44 [2018-10-10 14:42:47,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:42:47,822 INFO L225 Difference]: With dead ends: 127 [2018-10-10 14:42:47,822 INFO L226 Difference]: Without dead ends: 127 [2018-10-10 14:42:47,823 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=271, Invalid=599, Unknown=0, NotChecked=0, Total=870 [2018-10-10 14:42:47,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-10-10 14:42:47,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 80. [2018-10-10 14:42:47,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-10 14:42:47,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 82 transitions. [2018-10-10 14:42:47,833 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 82 transitions. Word has length 44 [2018-10-10 14:42:47,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:42:47,834 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 82 transitions. [2018-10-10 14:42:47,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-10 14:42:47,834 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 82 transitions. [2018-10-10 14:42:47,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-10-10 14:42:47,837 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:42:47,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:42:47,837 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:42:47,838 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:42:47,838 INFO L82 PathProgramCache]: Analyzing trace with hash -676974843, now seen corresponding path program 1 times [2018-10-10 14:42:47,838 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:42:47,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:42:47,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:47,840 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:47,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:47,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:47,943 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 14:42:47,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:42:47,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-10 14:42:47,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-10 14:42:47,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-10 14:42:47,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-10-10 14:42:47,946 INFO L87 Difference]: Start difference. First operand 80 states and 82 transitions. Second operand 6 states. [2018-10-10 14:42:48,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:42:48,042 INFO L93 Difference]: Finished difference Result 90 states and 91 transitions. [2018-10-10 14:42:48,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-10 14:42:48,043 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2018-10-10 14:42:48,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:42:48,045 INFO L225 Difference]: With dead ends: 90 [2018-10-10 14:42:48,045 INFO L226 Difference]: Without dead ends: 90 [2018-10-10 14:42:48,046 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-10-10 14:42:48,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-10-10 14:42:48,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 80. [2018-10-10 14:42:48,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-10-10 14:42:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2018-10-10 14:42:48,053 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 52 [2018-10-10 14:42:48,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:42:48,054 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2018-10-10 14:42:48,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-10 14:42:48,054 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2018-10-10 14:42:48,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2018-10-10 14:42:48,056 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:42:48,056 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-10 14:42:48,056 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:42:48,056 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:42:48,057 INFO L82 PathProgramCache]: Analyzing trace with hash 421778280, now seen corresponding path program 1 times [2018-10-10 14:42:48,057 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:42:48,057 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:42:48,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:48,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:48,058 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:48,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:48,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:42:48,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-10 14:42:48,501 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-10 14:42:48,512 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:48,551 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-10 14:42:48,604 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-10-10 14:42:48,606 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-10-10 14:42:48,615 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-10-10 14:42:48,616 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:11 [2018-10-10 14:42:49,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-10 14:42:49,227 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-10 14:42:49,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 21 [2018-10-10 14:42:49,283 WARN L240 PathProgramDumper]: Writing path program to file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/dump/stroeder1-alloca_true-valid-memsafety_true-termination.i_4.bpl [2018-10-10 14:42:49,291 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-10 14:42:49,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-10 14:42:49,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2018-10-10 14:42:49,293 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand 22 states. [2018-10-10 14:42:51,074 WARN L178 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-10 14:42:51,444 WARN L178 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 36 [2018-10-10 14:42:51,643 WARN L178 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 64 [2018-10-10 14:42:51,821 WARN L178 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2018-10-10 14:42:51,954 WARN L178 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2018-10-10 14:42:52,119 WARN L178 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2018-10-10 14:42:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:42:52,260 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2018-10-10 14:42:52,260 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-10-10 14:42:52,261 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 63 [2018-10-10 14:42:52,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:42:52,262 INFO L225 Difference]: With dead ends: 111 [2018-10-10 14:42:52,262 INFO L226 Difference]: Without dead ends: 111 [2018-10-10 14:42:52,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=430, Invalid=1292, Unknown=0, NotChecked=0, Total=1722 [2018-10-10 14:42:52,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-10-10 14:42:52,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 73. [2018-10-10 14:42:52,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-10-10 14:42:52,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2018-10-10 14:42:52,270 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 63 [2018-10-10 14:42:52,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:42:52,271 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2018-10-10 14:42:52,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-10-10 14:42:52,271 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2018-10-10 14:42:52,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-10-10 14:42:52,272 INFO L367 BasicCegarLoop]: Found error trace [2018-10-10 14:42:52,273 INFO L375 BasicCegarLoop]: trace histogram [2, 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, 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 14:42:52,273 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE]=== [2018-10-10 14:42:52,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-10 14:42:52,274 INFO L82 PathProgramCache]: Analyzing trace with hash -793307348, now seen corresponding path program 1 times [2018-10-10 14:42:52,274 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-10 14:42:52,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-10 14:42:52,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:52,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-10 14:42:52,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-10 14:42:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-10 14:42:52,487 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-10 14:42:52,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-10 14:42:52,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-10-10 14:42:52,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-10 14:42:52,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-10 14:42:52,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-10-10 14:42:52,489 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 9 states. [2018-10-10 14:42:52,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-10 14:42:52,841 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2018-10-10 14:42:52,841 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-10 14:42:52,842 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2018-10-10 14:42:52,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-10 14:42:52,843 INFO L225 Difference]: With dead ends: 72 [2018-10-10 14:42:52,843 INFO L226 Difference]: Without dead ends: 0 [2018-10-10 14:42:52,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2018-10-10 14:42:52,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-10 14:42:52,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-10 14:42:52,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-10 14:42:52,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-10 14:42:52,844 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2018-10-10 14:42:52,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-10 14:42:52,845 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-10 14:42:52,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-10 14:42:52,845 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-10 14:42:52,845 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-10 14:42:52,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.10 02:42:52 BoogieIcfgContainer [2018-10-10 14:42:52,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-10 14:42:52,850 INFO L168 Benchmark]: Toolchain (without parser) took 9778.28 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 856.7 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -896.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 14:42:52,851 INFO L168 Benchmark]: CDTParser took 0.26 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 14:42:52,852 INFO L168 Benchmark]: CACSL2BoogieTranslator took 491.35 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2018-10-10 14:42:52,853 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.64 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 14:42:52,853 INFO L168 Benchmark]: Boogie Preprocessor took 118.62 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -799.5 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2018-10-10 14:42:52,854 INFO L168 Benchmark]: RCFGBuilder took 563.44 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. [2018-10-10 14:42:52,859 INFO L168 Benchmark]: TraceAbstraction took 8535.98 ms. Allocated memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: 135.3 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -143.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-10 14:42:52,864 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 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 491.35 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 64.64 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 118.62 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 721.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -799.5 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 563.44 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 25.6 MB). Peak memory consumption was 25.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8535.98 ms. Allocated memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: 135.3 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -143.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 552]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 78 locations, 3 error locations. SAFE Result, 8.4s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 5.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 352 SDtfs, 2099 SDslu, 1466 SDs, 0 SdLazy, 689 SolverSat, 66 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 60 SyntacticMatches, 5 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=2, 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, 5 MinimizatonAttempts, 111 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 330 ConstructedInterpolants, 5 QuantifiedInterpolants, 123271 SizeOfPredicates, 20 NumberOfNonLiveVariables, 124 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 4/18 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...