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/array02-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-a74eeac-m [2018-02-02 18:20:51,870 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 18:20:51,872 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 18:20:51,882 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 18:20:51,883 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 18:20:51,884 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 18:20:51,885 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 18:20:51,886 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 18:20:51,888 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 18:20:51,889 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 18:20:51,890 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 18:20:51,890 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 18:20:51,891 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 18:20:51,892 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 18:20:51,893 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 18:20:51,895 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 18:20:51,896 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 18:20:51,898 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 18:20:51,899 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 18:20:51,900 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 18:20:51,902 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-02 18:20:51,902 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-02 18:20:51,902 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-02 18:20:51,903 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-02 18:20:51,904 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-02 18:20:51,905 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-02 18:20:51,906 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-02 18:20:51,906 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-02 18:20:51,906 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-02 18:20:51,906 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 18:20:51,907 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 18:20:51,907 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 18:20:51,916 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 18:20:51,917 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 18:20:51,917 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 18:20:51,918 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 18:20:51,918 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 18:20:51,918 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 18:20:51,918 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 18:20:51,918 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 18:20:51,918 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 18:20:51,918 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 18:20:51,919 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 18:20:51,919 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 18:20:51,919 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 18:20:51,919 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 18:20:51,919 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 18:20:51,919 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 18:20:51,919 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 18:20:51,919 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 18:20:51,919 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 18:20:51,920 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 18:20:51,920 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 18:20:51,920 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 18:20:51,920 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 18:20:51,920 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 18:20:51,920 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 18:20:51,950 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 18:20:51,959 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 18:20:51,962 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 18:20:51,963 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 18:20:51,963 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 18:20:51,964 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/array02-alloca_true-valid-memsafety_true-termination.i [2018-02-02 18:20:52,103 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 18:20:52,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 18:20:52,106 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 18:20:52,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 18:20:52,113 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 18:20:52,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 06:20:52" (1/1) ... [2018-02-02 18:20:52,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1482aa0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:52, skipping insertion in model container [2018-02-02 18:20:52,117 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 06:20:52" (1/1) ... [2018-02-02 18:20:52,131 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 18:20:52,161 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 18:20:52,247 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 18:20:52,259 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 18:20:52,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:52 WrapperNode [2018-02-02 18:20:52,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 18:20:52,265 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 18:20:52,265 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 18:20:52,265 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 18:20:52,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:52" (1/1) ... [2018-02-02 18:20:52,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:52" (1/1) ... [2018-02-02 18:20:52,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:52" (1/1) ... [2018-02-02 18:20:52,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:52" (1/1) ... [2018-02-02 18:20:52,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:52" (1/1) ... [2018-02-02 18:20:52,292 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:52" (1/1) ... [2018-02-02 18:20:52,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:52" (1/1) ... [2018-02-02 18:20:52,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 18:20:52,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 18:20:52,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 18:20:52,295 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 18:20:52,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:52" (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 18:20:52,329 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 18:20:52,329 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 18:20:52,329 INFO L136 BoogieDeclarations]: Found implementation of procedure test_fun [2018-02-02 18:20:52,330 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 18:20:52,330 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 18:20:52,330 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 18:20:52,330 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 18:20:52,330 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 18:20:52,330 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 18:20:52,330 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 18:20:52,331 INFO L128 BoogieDeclarations]: Found specification of procedure test_fun [2018-02-02 18:20:52,331 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 18:20:52,331 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 18:20:52,331 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 18:20:52,482 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 18:20:52,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 06:20:52 BoogieIcfgContainer [2018-02-02 18:20:52,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 18:20:52,483 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 18:20:52,483 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 18:20:52,485 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 18:20:52,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 06:20:52" (1/3) ... [2018-02-02 18:20:52,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b5d00c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 06:20:52, skipping insertion in model container [2018-02-02 18:20:52,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 06:20:52" (2/3) ... [2018-02-02 18:20:52,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b5d00c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 06:20:52, skipping insertion in model container [2018-02-02 18:20:52,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 06:20:52" (3/3) ... [2018-02-02 18:20:52,487 INFO L107 eAbstractionObserver]: Analyzing ICFG array02-alloca_true-valid-memsafety_true-termination.i [2018-02-02 18:20:52,492 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 18:20:52,496 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-02-02 18:20:52,527 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 18:20:52,528 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 18:20:52,528 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 18:20:52,528 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 18:20:52,528 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 18:20:52,528 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 18:20:52,528 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 18:20:52,528 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 18:20:52,529 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 18:20:52,541 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2018-02-02 18:20:52,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 18:20:52,549 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:20:52,550 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:20:52,550 INFO L371 AbstractCegarLoop]: === Iteration 1 === [test_funErr8RequiresViolation, test_funErr6RequiresViolation, test_funErr11RequiresViolation, test_funErr4RequiresViolation, test_funErr7RequiresViolation, test_funErr5RequiresViolation, test_funErr10RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr9RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 18:20:52,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1926055157, now seen corresponding path program 1 times [2018-02-02 18:20:52,556 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:20:52,557 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:20:52,605 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:52,605 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:20:52,605 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:20:52,656 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:20:52,732 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 18:20:52,734 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:20:52,734 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 18:20:52,736 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 18:20:52,746 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 18:20:52,746 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 18:20:52,747 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 6 states. [2018-02-02 18:20:52,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:20:52,862 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2018-02-02 18:20:52,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 18:20:52,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-02-02 18:20:52,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:20:52,869 INFO L225 Difference]: With dead ends: 43 [2018-02-02 18:20:52,869 INFO L226 Difference]: Without dead ends: 40 [2018-02-02 18:20:52,870 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 18:20:52,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-02-02 18:20:52,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-02-02 18:20:52,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-02-02 18:20:52,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2018-02-02 18:20:52,949 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 15 [2018-02-02 18:20:52,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:20:52,950 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2018-02-02 18:20:52,950 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 18:20:52,950 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2018-02-02 18:20:52,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-02-02 18:20:52,950 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:20:52,951 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:20:52,951 INFO L371 AbstractCegarLoop]: === Iteration 2 === [test_funErr8RequiresViolation, test_funErr6RequiresViolation, test_funErr11RequiresViolation, test_funErr4RequiresViolation, test_funErr7RequiresViolation, test_funErr5RequiresViolation, test_funErr10RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr9RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 18:20:52,951 INFO L82 PathProgramCache]: Analyzing trace with hash -1926055156, now seen corresponding path program 1 times [2018-02-02 18:20:52,951 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:20:52,951 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:20:52,952 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:52,952 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:20:52,952 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:20:52,970 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:20:53,070 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 18:20:53,070 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:20:53,070 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 18:20:53,071 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 18:20:53,072 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 18:20:53,072 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-02 18:20:53,072 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 7 states. [2018-02-02 18:20:53,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:20:53,217 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2018-02-02 18:20:53,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 18:20:53,217 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2018-02-02 18:20:53,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:20:53,220 INFO L225 Difference]: With dead ends: 59 [2018-02-02 18:20:53,220 INFO L226 Difference]: Without dead ends: 59 [2018-02-02 18:20:53,221 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-02-02 18:20:53,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-02-02 18:20:53,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2018-02-02 18:20:53,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-02-02 18:20:53,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 62 transitions. [2018-02-02 18:20:53,226 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 62 transitions. Word has length 15 [2018-02-02 18:20:53,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:20:53,227 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 62 transitions. [2018-02-02 18:20:53,227 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 18:20:53,227 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 62 transitions. [2018-02-02 18:20:53,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-02 18:20:53,228 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:20:53,228 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:20:53,228 INFO L371 AbstractCegarLoop]: === Iteration 3 === [test_funErr8RequiresViolation, test_funErr6RequiresViolation, test_funErr11RequiresViolation, test_funErr4RequiresViolation, test_funErr7RequiresViolation, test_funErr5RequiresViolation, test_funErr10RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr9RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 18:20:53,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1643065362, now seen corresponding path program 1 times [2018-02-02 18:20:53,228 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:20:53,228 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:20:53,229 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:53,229 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:20:53,229 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:20:53,240 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:20:53,275 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 18:20:53,276 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:20:53,276 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 18:20:53,276 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 18:20:53,276 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 18:20:53,276 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 18:20:53,277 INFO L87 Difference]: Start difference. First operand 56 states and 62 transitions. Second operand 5 states. [2018-02-02 18:20:53,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:20:53,320 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2018-02-02 18:20:53,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 18:20:53,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-02-02 18:20:53,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:20:53,320 INFO L225 Difference]: With dead ends: 59 [2018-02-02 18:20:53,321 INFO L226 Difference]: Without dead ends: 57 [2018-02-02 18:20:53,321 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 18:20:53,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-02-02 18:20:53,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2018-02-02 18:20:53,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-02-02 18:20:53,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 61 transitions. [2018-02-02 18:20:53,324 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 61 transitions. Word has length 18 [2018-02-02 18:20:53,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:20:53,324 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 61 transitions. [2018-02-02 18:20:53,324 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 18:20:53,324 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 61 transitions. [2018-02-02 18:20:53,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-02 18:20:53,325 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:20:53,325 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:20:53,325 INFO L371 AbstractCegarLoop]: === Iteration 4 === [test_funErr8RequiresViolation, test_funErr6RequiresViolation, test_funErr11RequiresViolation, test_funErr4RequiresViolation, test_funErr7RequiresViolation, test_funErr5RequiresViolation, test_funErr10RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr9RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 18:20:53,325 INFO L82 PathProgramCache]: Analyzing trace with hash 417458597, now seen corresponding path program 1 times [2018-02-02 18:20:53,325 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:20:53,325 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:20:53,326 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:53,326 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:20:53,326 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:20:53,339 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:20:53,413 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 18:20:53,413 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 18:20:53,413 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 18:20:53,423 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:20:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:20:53,443 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 18:20:53,485 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 18:20:53,504 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-02-02 18:20:53,504 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 12 [2018-02-02 18:20:53,505 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-02-02 18:20:53,505 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-02-02 18:20:53,505 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-02-02 18:20:53,505 INFO L87 Difference]: Start difference. First operand 56 states and 61 transitions. Second operand 12 states. [2018-02-02 18:20:53,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:20:53,658 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2018-02-02 18:20:53,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 18:20:53,658 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 24 [2018-02-02 18:20:53,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:20:53,659 INFO L225 Difference]: With dead ends: 85 [2018-02-02 18:20:53,659 INFO L226 Difference]: Without dead ends: 85 [2018-02-02 18:20:53,659 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 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 18:20:53,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-02-02 18:20:53,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2018-02-02 18:20:53,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-02-02 18:20:53,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 88 transitions. [2018-02-02 18:20:53,662 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 88 transitions. Word has length 24 [2018-02-02 18:20:53,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:20:53,663 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 88 transitions. [2018-02-02 18:20:53,663 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-02-02 18:20:53,663 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 88 transitions. [2018-02-02 18:20:53,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-02 18:20:53,664 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:20:53,665 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 18:20:53,665 INFO L371 AbstractCegarLoop]: === Iteration 5 === [test_funErr8RequiresViolation, test_funErr6RequiresViolation, test_funErr11RequiresViolation, test_funErr4RequiresViolation, test_funErr7RequiresViolation, test_funErr5RequiresViolation, test_funErr10RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr9RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 18:20:53,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1576686109, now seen corresponding path program 1 times [2018-02-02 18:20:53,665 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:20:53,665 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:20:53,665 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:53,666 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:20:53,666 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:53,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:20:53,673 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:20:53,762 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 18:20:53,762 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-02-02 18:20:53,762 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 18:20:53,767 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:20:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:20:53,778 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-02-02 18:20:53,796 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 18:20:53,797 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-02-02 18:20:53,800 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-02-02 18:20:53,800 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:12, output treesize:11 [2018-02-02 18:20:53,903 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 18:20:53,940 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-02-02 18:20:53,940 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2018-02-02 18:20:53,941 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-02-02 18:20:53,941 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-02-02 18:20:53,941 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-02-02 18:20:53,942 INFO L87 Difference]: Start difference. First operand 81 states and 88 transitions. Second operand 13 states. [2018-02-02 18:20:54,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:20:54,109 INFO L93 Difference]: Finished difference Result 76 states and 83 transitions. [2018-02-02 18:20:54,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 18:20:54,109 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2018-02-02 18:20:54,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:20:54,110 INFO L225 Difference]: With dead ends: 76 [2018-02-02 18:20:54,110 INFO L226 Difference]: Without dead ends: 76 [2018-02-02 18:20:54,110 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 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 18:20:54,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-02-02 18:20:54,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 61. [2018-02-02 18:20:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-02-02 18:20:54,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2018-02-02 18:20:54,116 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 24 [2018-02-02 18:20:54,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:20:54,116 INFO L432 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2018-02-02 18:20:54,116 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-02-02 18:20:54,116 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2018-02-02 18:20:54,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-02 18:20:54,117 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 18:20:54,117 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, 1] [2018-02-02 18:20:54,117 INFO L371 AbstractCegarLoop]: === Iteration 6 === [test_funErr8RequiresViolation, test_funErr6RequiresViolation, test_funErr11RequiresViolation, test_funErr4RequiresViolation, test_funErr7RequiresViolation, test_funErr5RequiresViolation, test_funErr10RequiresViolation, test_funErr0RequiresViolation, test_funErr3RequiresViolation, test_funErr9RequiresViolation, test_funErr1RequiresViolation, test_funErr2RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 18:20:54,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1727082791, now seen corresponding path program 1 times [2018-02-02 18:20:54,117 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 18:20:54,118 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 18:20:54,118 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:54,118 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 18:20:54,119 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 18:20:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 18:20:54,131 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 18:20:54,173 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 18:20:54,174 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 18:20:54,174 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 18:20:54,174 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 18:20:54,174 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 18:20:54,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 18:20:54,174 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 4 states. [2018-02-02 18:20:54,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 18:20:54,218 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2018-02-02 18:20:54,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 18:20:54,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-02-02 18:20:54,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 18:20:54,219 INFO L225 Difference]: With dead ends: 60 [2018-02-02 18:20:54,219 INFO L226 Difference]: Without dead ends: 0 [2018-02-02 18:20:54,219 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 18:20:54,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-02 18:20:54,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-02 18:20:54,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-02 18:20:54,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-02 18:20:54,219 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-02-02 18:20:54,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 18:20:54,220 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-02 18:20:54,220 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 18:20:54,220 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-02 18:20:54,220 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-02 18:20:54,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 06:20:54 BoogieIcfgContainer [2018-02-02 18:20:54,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 18:20:54,224 INFO L168 Benchmark]: Toolchain (without parser) took 2119.88 ms. Allocated memory was 393.7 MB in the beginning and 613.9 MB in the end (delta: 220.2 MB). Free memory was 351.8 MB in the beginning and 543.6 MB in the end (delta: -191.8 MB). Peak memory consumption was 28.4 MB. Max. memory is 5.3 GB. [2018-02-02 18:20:54,224 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 393.7 MB. Free memory is still 357.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 18:20:54,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 159.28 ms. Allocated memory is still 393.7 MB. Free memory was 350.4 MB in the beginning and 341.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. [2018-02-02 18:20:54,225 INFO L168 Benchmark]: Boogie Preprocessor took 29.76 ms. Allocated memory is still 393.7 MB. Free memory was 341.2 MB in the beginning and 338.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-02 18:20:54,225 INFO L168 Benchmark]: RCFGBuilder took 187.35 ms. Allocated memory is still 393.7 MB. Free memory was 338.5 MB in the beginning and 319.9 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. [2018-02-02 18:20:54,225 INFO L168 Benchmark]: TraceAbstraction took 1740.39 ms. Allocated memory was 393.7 MB in the beginning and 613.9 MB in the end (delta: 220.2 MB). Free memory was 318.6 MB in the beginning and 543.6 MB in the end (delta: -225.0 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 18:20:54,226 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 393.7 MB. Free memory is still 357.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 159.28 ms. Allocated memory is still 393.7 MB. Free memory was 350.4 MB in the beginning and 341.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 29.76 ms. Allocated memory is still 393.7 MB. Free memory was 341.2 MB in the beginning and 338.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 187.35 ms. Allocated memory is still 393.7 MB. Free memory was 338.5 MB in the beginning and 319.9 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1740.39 ms. Allocated memory was 393.7 MB in the beginning and 613.9 MB in the end (delta: 220.2 MB). Free memory was 318.6 MB in the beginning and 543.6 MB in the end (delta: -225.0 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: 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: 556]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 13 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 49 locations, 13 error locations. SAFE Result, 1.7s OverallTime, 6 OverallIterations, 2 TraceHistogramMax, 0.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 179 SDtfs, 395 SDslu, 589 SDs, 0 SdLazy, 493 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 46 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred 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, 23 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 171 NumberOfCodeBlocks, 171 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 163 ConstructedInterpolants, 14 QuantifiedInterpolants, 22744 SizeOfPredicates, 9 NumberOfNonLiveVariables, 177 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/array02-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_18-20-54-230.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/array02-alloca_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_18-20-54-230.csv Received shutdown request...