java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/array-memsafety/array01-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-a74eeac-m [2018-02-02 18:20:48,317 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 18:20:48,318 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 18:20:48,332 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 18:20:48,332 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 18:20:48,333 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 18:20:48,334 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 18:20:48,336 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 18:20:48,338 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 18:20:48,339 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 18:20:48,339 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 18:20:48,340 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 18:20:48,340 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 18:20:48,341 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 18:20:48,342 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 18:20:48,344 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 18:20:48,346 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 18:20:48,347 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 18:20:48,348 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 18:20:48,349 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 18:20:48,351 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-02 18:20:48,351 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-02 18:20:48,351 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-02 18:20:48,352 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-02 18:20:48,352 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-02 18:20:48,353 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-02 18:20:48,353 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-02 18:20:48,354 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-02 18:20:48,354 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-02 18:20:48,354 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 18:20:48,355 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 18:20:48,355 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-02 18:20:48,365 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 18:20:48,366 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 18:20:48,367 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 18:20:48,367 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 18:20:48,367 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 18:20:48,368 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 18:20:48,368 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 18:20:48,368 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 18:20:48,368 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 18:20:48,368 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 18:20:48,369 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 18:20:48,369 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 18:20:48,369 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 18:20:48,369 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 18:20:48,369 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 18:20:48,369 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 18:20:48,370 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 18:20:48,370 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 18:20:48,370 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 18:20:48,370 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 18:20:48,370 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 18:20:48,371 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 18:20:48,371 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 18:20:48,371 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 18:20:48,371 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 18:20:48,401 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 18:20:48,411 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 18:20:48,414 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 18:20:48,415 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 18:20:48,415 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 18:20:48,416 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/array01-alloca_true-valid-memsafety_true-termination.i [2018-02-02 18:20:48,543 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 18:20:48,544 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 18:20:48,545 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 18:20:48,545 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 18:20:48,550 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 18:20:48,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 06:20:48" (1/1) ... [2018-02-02 18:20:48,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ad95545 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:48, skipping insertion in model container [2018-02-02 18:20:48,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 06:20:48" (1/1) ... [2018-02-02 18:20:48,564 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 18:20:48,591 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 18:20:48,683 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 18:20:48,694 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 18:20:48,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:48 WrapperNode [2018-02-02 18:20:48,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 18:20:48,698 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 18:20:48,698 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 18:20:48,698 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 18:20:48,709 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:48" (1/1) ... [2018-02-02 18:20:48,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:48" (1/1) ... [2018-02-02 18:20:48,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:48" (1/1) ... [2018-02-02 18:20:48,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:48" (1/1) ... [2018-02-02 18:20:48,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:48" (1/1) ... [2018-02-02 18:20:48,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:48" (1/1) ... [2018-02-02 18:20:48,720 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:48" (1/1) ... [2018-02-02 18:20:48,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 18:20:48,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 18:20:48,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 18:20:48,721 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 18:20:48,722 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:48" (1/1) ... No working directory specified, using /home/ultimate/work/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 [2018-02-02 18:20:48,755 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 18:20:48,755 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 18:20:48,755 INFO L136 BoogieDeclarations]: Found implementation of procedure test_fun [2018-02-02 18:20:48,756 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 18:20:48,756 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 18:20:48,756 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 18:20:48,756 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 18:20:48,756 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 18:20:48,756 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 18:20:48,756 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 18:20:48,757 INFO L128 BoogieDeclarations]: Found specification of procedure test_fun [2018-02-02 18:20:48,757 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 18:20:48,757 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 18:20:48,757 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 18:20:48,885 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 18:20:48,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 06:20:48 BoogieIcfgContainer [2018-02-02 18:20:48,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 18:20:48,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 18:20:48,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 18:20:48,888 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 18:20:48,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 06:20:48" (1/3) ... [2018-02-02 18:20:48,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e441ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 06:20:48, skipping insertion in model container [2018-02-02 18:20:48,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:48" (2/3) ... [2018-02-02 18:20:48,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e441ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 06:20:48, skipping insertion in model container [2018-02-02 18:20:48,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 06:20:48" (3/3) ... [2018-02-02 18:20:48,890 INFO L107 eAbstractionObserver]: Analyzing ICFG array01-alloca_true-valid-memsafety_true-termination.i [2018-02-02 18:20:48,895 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 18:20:48,900 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2018-02-02 18:20:48,926 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 18:20:48,927 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 18:20:48,927 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 18:20:48,927 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 18:20:48,927 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 18:20:48,927 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 18:20:48,928 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 18:20:48,928 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 18:20:48,928 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 18:20:48,941 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-02-02 18:20:48,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 18:20:48,952 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:20:48,953 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:20:48,953 INFO L371 AbstractCegarLoop]: === Iteration 1 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 18:20:48,956 INFO L82 PathProgramCache]: Analyzing trace with hash -55325045, now seen corresponding path program 1 times [2018-02-02 18:20:48,957 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:20:48,957 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:20:48,990 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:48,990 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:20:48,990 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:20:49,036 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:20:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:20:49,131 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:20:49,132 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 18:20:49,133 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 18:20:49,141 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 18:20:49,142 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 18:20:49,143 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 6 states. [2018-02-02 18:20:49,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:20:49,216 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2018-02-02 18:20:49,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 18:20:49,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-02-02 18:20:49,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:20:49,223 INFO L225 Difference]: With dead ends: 35 [2018-02-02 18:20:49,223 INFO L226 Difference]: Without dead ends: 32 [2018-02-02 18:20:49,224 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-02-02 18:20:49,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-02-02 18:20:49,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-02-02 18:20:49,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-02-02 18:20:49,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2018-02-02 18:20:49,316 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 15 [2018-02-02 18:20:49,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:20:49,316 INFO L432 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2018-02-02 18:20:49,316 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 18:20:49,316 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2018-02-02 18:20:49,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 18:20:49,316 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:20:49,317 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:20:49,317 INFO L371 AbstractCegarLoop]: === Iteration 2 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 18:20:49,317 INFO L82 PathProgramCache]: Analyzing trace with hash -55325044, now seen corresponding path program 1 times [2018-02-02 18:20:49,317 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:20:49,317 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:20:49,318 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:49,318 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:20:49,318 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:20:49,333 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:20:49,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:20:49,429 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:20:49,430 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 18:20:49,431 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 18:20:49,431 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 18:20:49,431 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-02 18:20:49,432 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 7 states. [2018-02-02 18:20:49,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:20:49,520 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2018-02-02 18:20:49,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 18:20:49,520 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-02-02 18:20:49,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:20:49,522 INFO L225 Difference]: With dead ends: 45 [2018-02-02 18:20:49,522 INFO L226 Difference]: Without dead ends: 45 [2018-02-02 18:20:49,523 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2018-02-02 18:20:49,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-02-02 18:20:49,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2018-02-02 18:20:49,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-02-02 18:20:49,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2018-02-02 18:20:49,526 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 15 [2018-02-02 18:20:49,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:20:49,526 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2018-02-02 18:20:49,526 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 18:20:49,526 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2018-02-02 18:20:49,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 18:20:49,527 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:20:49,527 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:20:49,527 INFO L371 AbstractCegarLoop]: === Iteration 3 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 18:20:49,527 INFO L82 PathProgramCache]: Analyzing trace with hash -195737667, now seen corresponding path program 1 times [2018-02-02 18:20:49,527 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:20:49,528 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:20:49,528 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:49,529 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:20:49,529 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:20:49,540 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:20:49,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:20:49,587 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:20:49,587 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 18:20:49,588 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 18:20:49,588 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 18:20:49,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 18:20:49,588 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2018-02-02 18:20:49,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:20:49,630 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2018-02-02 18:20:49,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 18:20:49,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2018-02-02 18:20:49,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:20:49,631 INFO L225 Difference]: With dead ends: 45 [2018-02-02 18:20:49,631 INFO L226 Difference]: Without dead ends: 42 [2018-02-02 18:20:49,632 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-02 18:20:49,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-02-02 18:20:49,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-02-02 18:20:49,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-02-02 18:20:49,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-02-02 18:20:49,635 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 20 [2018-02-02 18:20:49,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:20:49,635 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-02-02 18:20:49,635 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 18:20:49,635 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-02-02 18:20:49,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-02 18:20:49,636 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:20:49,636 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:20:49,636 INFO L371 AbstractCegarLoop]: === Iteration 4 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 18:20:49,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1506152513, now seen corresponding path program 1 times [2018-02-02 18:20:49,636 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:20:49,636 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:20:49,637 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:49,637 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:20:49,637 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:20:49,648 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:20:49,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:20:49,721 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 18:20:49,721 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/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 [2018-02-02 18:20:49,726 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:20:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:20:49,744 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 18:20:49,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:20:49,825 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-02 18:20:49,826 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2018-02-02 18:20:49,826 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-02-02 18:20:49,826 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-02-02 18:20:49,826 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-02-02 18:20:49,827 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 12 states. [2018-02-02 18:20:49,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:20:49,915 INFO L93 Difference]: Finished difference Result 65 states and 68 transitions. [2018-02-02 18:20:49,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 18:20:49,919 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-02-02 18:20:49,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:20:49,920 INFO L225 Difference]: With dead ends: 65 [2018-02-02 18:20:49,920 INFO L226 Difference]: Without dead ends: 65 [2018-02-02 18:20:49,920 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-02-02 18:20:49,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-02-02 18:20:49,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2018-02-02 18:20:49,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-02-02 18:20:49,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2018-02-02 18:20:49,925 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 21 [2018-02-02 18:20:49,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:20:49,926 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2018-02-02 18:20:49,926 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-02-02 18:20:49,926 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2018-02-02 18:20:49,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-02 18:20:49,927 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:20:49,927 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:20:49,927 INFO L371 AbstractCegarLoop]: === Iteration 5 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 18:20:49,927 INFO L82 PathProgramCache]: Analyzing trace with hash 226288835, now seen corresponding path program 1 times [2018-02-02 18:20:49,927 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:20:49,927 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:20:49,928 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:49,928 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:20:49,928 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:49,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:20:49,938 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:20:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:20:50,033 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 18:20:50,033 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-02-02 18:20:50,038 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:20:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:20:50,049 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 18:20:50,068 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 8 treesize of output 7 [2018-02-02 18:20:50,070 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 18:20:50,073 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 18:20:50,073 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-02-02 18:20:50,184 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 18:20:50,201 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 18:20:50,202 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2018-02-02 18:20:50,202 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-02-02 18:20:50,202 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-02-02 18:20:50,202 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-02-02 18:20:50,202 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 13 states. [2018-02-02 18:20:50,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:20:50,355 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2018-02-02 18:20:50,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 18:20:50,356 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2018-02-02 18:20:50,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:20:50,356 INFO L225 Difference]: With dead ends: 58 [2018-02-02 18:20:50,356 INFO L226 Difference]: Without dead ends: 58 [2018-02-02 18:20:50,357 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2018-02-02 18:20:50,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-02-02 18:20:50,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2018-02-02 18:20:50,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-02 18:20:50,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-02-02 18:20:50,360 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 21 [2018-02-02 18:20:50,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:20:50,360 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-02-02 18:20:50,360 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-02-02 18:20:50,360 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2018-02-02 18:20:50,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-02 18:20:50,360 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:20:50,361 INFO L351 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] [2018-02-02 18:20:50,361 INFO L371 AbstractCegarLoop]: === Iteration 6 === [test_funErr4RequiresViolation, test_funErr5RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 18:20:50,361 INFO L82 PathProgramCache]: Analyzing trace with hash 308334376, now seen corresponding path program 1 times [2018-02-02 18:20:50,361 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:20:50,361 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:20:50,361 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:50,361 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:20:50,361 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:20:50,374 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:20:50,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-02 18:20:50,415 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:20:50,416 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 18:20:50,416 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 18:20:50,416 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 18:20:50,416 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 18:20:50,416 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 4 states. [2018-02-02 18:20:50,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:20:50,454 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2018-02-02 18:20:50,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 18:20:50,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-02-02 18:20:50,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:20:50,455 INFO L225 Difference]: With dead ends: 49 [2018-02-02 18:20:50,455 INFO L226 Difference]: Without dead ends: 0 [2018-02-02 18:20:50,455 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 18:20:50,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-02 18:20:50,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-02 18:20:50,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-02 18:20:50,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-02 18:20:50,456 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-02-02 18:20:50,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:20:50,456 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-02 18:20:50,456 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 18:20:50,456 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-02 18:20:50,456 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-02 18:20:50,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 06:20:50 BoogieIcfgContainer [2018-02-02 18:20:50,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 18:20:50,461 INFO L168 Benchmark]: Toolchain (without parser) took 1917.41 ms. Allocated memory was 406.3 MB in the beginning and 636.5 MB in the end (delta: 230.2 MB). Free memory was 364.5 MB in the beginning and 587.8 MB in the end (delta: -223.3 MB). Peak memory consumption was 6.9 MB. Max. memory is 5.3 GB. [2018-02-02 18:20:50,462 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 406.3 MB. Free memory is still 369.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 18:20:50,462 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.54 ms. Allocated memory is still 406.3 MB. Free memory was 363.2 MB in the beginning and 354.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. [2018-02-02 18:20:50,462 INFO L168 Benchmark]: Boogie Preprocessor took 23.34 ms. Allocated memory is still 406.3 MB. Free memory was 354.0 MB in the beginning and 351.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-02 18:20:50,462 INFO L168 Benchmark]: RCFGBuilder took 164.18 ms. Allocated memory is still 406.3 MB. Free memory was 351.3 MB in the beginning and 334.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 5.3 GB. [2018-02-02 18:20:50,463 INFO L168 Benchmark]: TraceAbstraction took 1574.73 ms. Allocated memory was 406.3 MB in the beginning and 636.5 MB in the end (delta: 230.2 MB). Free memory was 334.6 MB in the beginning and 587.8 MB in the end (delta: -253.2 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 18:20:50,464 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 406.3 MB. Free memory is still 369.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 152.54 ms. Allocated memory is still 406.3 MB. Free memory was 363.2 MB in the beginning and 354.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 23.34 ms. Allocated memory is still 406.3 MB. Free memory was 354.0 MB in the beginning and 351.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 164.18 ms. Allocated memory is still 406.3 MB. Free memory was 351.3 MB in the beginning and 334.6 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1574.73 ms. Allocated memory was 406.3 MB in the beginning and 636.5 MB in the end (delta: 230.2 MB). Free memory was 334.6 MB in the beginning and 587.8 MB in the end (delta: -253.2 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - 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 - 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 - PositiveResult [Line: 552]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 38 locations, 7 error locations. SAFE Result, 1.5s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 149 SDtfs, 273 SDslu, 469 SDs, 0 SdLazy, 344 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=4, 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, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 152 ConstructedInterpolants, 11 QuantifiedInterpolants, 17096 SizeOfPredicates, 9 NumberOfNonLiveVariables, 157 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 12/18 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array01-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_18-20-50-469.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array01-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_18-20-50-469.csv Received shutdown request...