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/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memset2_true-valid-memsafety_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-835382a-m [2018-04-05 17:57:05,653 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-05 17:57:05,655 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-05 17:57:05,673 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-05 17:57:05,673 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-05 17:57:05,674 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-05 17:57:05,676 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-05 17:57:05,679 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-05 17:57:05,681 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-05 17:57:05,685 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-05 17:57:05,686 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-05 17:57:05,687 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-05 17:57:05,688 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-05 17:57:05,689 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-05 17:57:05,690 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-05 17:57:05,692 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-05 17:57:05,694 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-05 17:57:05,696 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-05 17:57:05,697 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-05 17:57:05,699 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-05 17:57:05,701 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-05 17:57:05,701 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-05 17:57:05,701 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-05 17:57:05,703 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-05 17:57:05,704 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-05 17:57:05,705 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-05 17:57:05,705 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-05 17:57:05,706 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-05 17:57:05,707 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-05 17:57:05,707 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-05 17:57:05,708 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-05 17:57:05,708 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf [2018-04-05 17:57:05,734 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-05 17:57:05,734 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-05 17:57:05,735 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-05 17:57:05,735 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-05 17:57:05,736 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-05 17:57:05,736 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-05 17:57:05,736 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-05 17:57:05,736 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-05 17:57:05,736 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-05 17:57:05,737 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-05 17:57:05,737 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-05 17:57:05,737 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-05 17:57:05,737 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-05 17:57:05,738 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-05 17:57:05,738 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-05 17:57:05,738 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-05 17:57:05,738 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-05 17:57:05,738 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-05 17:57:05,738 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-05 17:57:05,739 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-05 17:57:05,739 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-05 17:57:05,739 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-05 17:57:05,739 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-05 17:57:05,739 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-05 17:57:05,740 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-05 17:57:05,740 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-05 17:57:05,740 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-05 17:57:05,740 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-05 17:57:05,740 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-05 17:57:05,741 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-05 17:57:05,741 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-05 17:57:05,741 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:57:05,741 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-05 17:57:05,742 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-05 17:57:05,742 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-05 17:57:05,742 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-05 17:57:05,743 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-05 17:57:05,793 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-05 17:57:05,805 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-05 17:57:05,809 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-05 17:57:05,811 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-05 17:57:05,811 INFO L276 PluginConnector]: CDTParser initialized [2018-04-05 17:57:05,812 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memset2_true-valid-memsafety_true-termination.c [2018-04-05 17:57:06,160 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG3e7cda477 [2018-04-05 17:57:06,307 INFO L287 CDTParser]: IsIndexed: true [2018-04-05 17:57:06,307 INFO L288 CDTParser]: Found 1 translation units. [2018-04-05 17:57:06,308 INFO L168 CDTParser]: Scanning memset2_true-valid-memsafety_true-termination.c [2018-04-05 17:57:06,309 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-05 17:57:06,310 INFO L215 ultiparseSymbolTable]: [2018-04-05 17:57:06,310 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-05 17:57:06,310 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in memset2_true-valid-memsafety_true-termination.c [2018-04-05 17:57:06,310 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-05 17:57:06,310 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fmemset__true_valid_memsafety_true_termination_c____u32 in memset2_true-valid-memsafety_true-termination.c [2018-04-05 17:57:06,311 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fmemset__true_valid_memsafety_true_termination_c____kernel_size_t in memset2_true-valid-memsafety_true-termination.c [2018-04-05 17:57:06,311 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fmemset__true_valid_memsafety_true_termination_c__size_t in memset2_true-valid-memsafety_true-termination.c [2018-04-05 17:57:06,353 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG3e7cda477 [2018-04-05 17:57:06,358 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-05 17:57:06,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-05 17:57:06,361 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-05 17:57:06,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-05 17:57:06,368 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-05 17:57:06,370 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 05:57:06" (1/1) ... [2018-04-05 17:57:06,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b018f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:57:06, skipping insertion in model container [2018-04-05 17:57:06,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 05:57:06" (1/1) ... [2018-04-05 17:57:06,387 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-05 17:57:06,399 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-05 17:57:06,550 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-05 17:57:06,578 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-05 17:57:06,584 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 7 non ball SCCs. Number of states in SCCs 7. [2018-04-05 17:57:06,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:57:06 WrapperNode [2018-04-05 17:57:06,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-05 17:57:06,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-05 17:57:06,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-05 17:57:06,596 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-05 17:57:06,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:57:06" (1/1) ... [2018-04-05 17:57:06,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:57:06" (1/1) ... [2018-04-05 17:57:06,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:57:06" (1/1) ... [2018-04-05 17:57:06,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:57:06" (1/1) ... [2018-04-05 17:57:06,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:57:06" (1/1) ... [2018-04-05 17:57:06,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:57:06" (1/1) ... [2018-04-05 17:57:06,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:57:06" (1/1) ... [2018-04-05 17:57:06,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-05 17:57:06,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-05 17:57:06,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-05 17:57:06,632 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-05 17:57:06,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:57:06" (1/1) ... No working directory specified, using /storage/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 [2018-04-05 17:57:06,698 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-05 17:57:06,699 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-05 17:57:06,699 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-05 17:57:06,699 INFO L136 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-04-05 17:57:06,699 INFO L128 BoogieDeclarations]: Found specification of procedure memset [2018-04-05 17:57:06,699 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-05 17:57:06,699 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-05 17:57:06,699 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-04-05 17:57:06,699 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-05 17:57:06,700 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-05 17:57:06,700 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-05 17:57:06,859 WARN L446 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2018-04-05 17:57:06,923 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-05 17:57:06,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 05:57:06 BoogieIcfgContainer [2018-04-05 17:57:06,924 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-05 17:57:06,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-05 17:57:06,925 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-05 17:57:06,929 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-05 17:57:06,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 05:57:06" (1/3) ... [2018-04-05 17:57:06,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25119f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 05:57:06, skipping insertion in model container [2018-04-05 17:57:06,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:57:06" (2/3) ... [2018-04-05 17:57:06,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25119f4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 05:57:06, skipping insertion in model container [2018-04-05 17:57:06,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 05:57:06" (3/3) ... [2018-04-05 17:57:06,932 INFO L107 eAbstractionObserver]: Analyzing ICFG memset2_true-valid-memsafety_true-termination.c [2018-04-05 17:57:06,939 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-05 17:57:06,946 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-04-05 17:57:06,991 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-05 17:57:06,992 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-05 17:57:06,993 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-05 17:57:06,993 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-05 17:57:06,993 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-05 17:57:06,993 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-05 17:57:06,993 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-05 17:57:06,993 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-05 17:57:06,994 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-05 17:57:06,995 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-05 17:57:07,011 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2018-04-05 17:57:07,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-04-05 17:57:07,017 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:57:07,018 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:57:07,018 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-05 17:57:07,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1964876918, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:57:07,035 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:57:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:57:07,070 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:57:07,110 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 17:57:07,111 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 17:57:07,117 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 17:57:07,117 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-05 17:57:07,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:57:07,132 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:57:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:57:07,173 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 17:57:07,174 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-04-05 17:57:07,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-05 17:57:07,185 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-05 17:57:07,186 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-05 17:57:07,188 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2018-04-05 17:57:07,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:57:07,224 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-04-05 17:57:07,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-05 17:57:07,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-04-05 17:57:07,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:57:07,236 INFO L225 Difference]: With dead ends: 26 [2018-04-05 17:57:07,237 INFO L226 Difference]: Without dead ends: 22 [2018-04-05 17:57:07,240 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-05 17:57:07,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-04-05 17:57:07,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-04-05 17:57:07,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-04-05 17:57:07,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-04-05 17:57:07,276 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 8 [2018-04-05 17:57:07,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:57:07,277 INFO L459 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-04-05 17:57:07,277 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-05 17:57:07,277 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-04-05 17:57:07,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-04-05 17:57:07,278 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:57:07,278 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:57:07,278 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-05 17:57:07,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1964876917, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:57:07,289 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:57:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:57:07,307 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:57:07,319 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 17:57:07,320 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 17:57:07,326 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 17:57:07,326 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-05 17:57:07,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:57:07,347 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:57:07,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:57:07,387 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 17:57:07,388 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2018-04-05 17:57:07,389 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-05 17:57:07,389 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-05 17:57:07,389 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-05 17:57:07,390 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 4 states. [2018-04-05 17:57:07,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:57:07,409 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-04-05 17:57:07,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-05 17:57:07,410 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-04-05 17:57:07,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:57:07,410 INFO L225 Difference]: With dead ends: 22 [2018-04-05 17:57:07,410 INFO L226 Difference]: Without dead ends: 21 [2018-04-05 17:57:07,411 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-04-05 17:57:07,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-04-05 17:57:07,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-04-05 17:57:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-04-05 17:57:07,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-04-05 17:57:07,416 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 8 [2018-04-05 17:57:07,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:57:07,416 INFO L459 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-04-05 17:57:07,416 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-05 17:57:07,417 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-04-05 17:57:07,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-04-05 17:57:07,417 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:57:07,418 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:57:07,418 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-05 17:57:07,418 INFO L82 PathProgramCache]: Analyzing trace with hash 385100327, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:57:07,426 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:57:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:57:07,447 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:57:07,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:57:07,478 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:57:07,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:57:07,577 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 17:57:07,577 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2018-04-05 17:57:07,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-05 17:57:07,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-05 17:57:07,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-04-05 17:57:07,579 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 6 states. [2018-04-05 17:57:07,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:57:07,609 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2018-04-05 17:57:07,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-05 17:57:07,610 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-04-05 17:57:07,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:57:07,611 INFO L225 Difference]: With dead ends: 34 [2018-04-05 17:57:07,611 INFO L226 Difference]: Without dead ends: 24 [2018-04-05 17:57:07,612 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-04-05 17:57:07,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-04-05 17:57:07,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-04-05 17:57:07,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-04-05 17:57:07,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-04-05 17:57:07,617 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 19 [2018-04-05 17:57:07,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:57:07,617 INFO L459 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-04-05 17:57:07,617 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-05 17:57:07,618 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-04-05 17:57:07,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-04-05 17:57:07,618 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:57:07,619 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:57:07,619 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-05 17:57:07,619 INFO L82 PathProgramCache]: Analyzing trace with hash -1790419159, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:57:07,634 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:57:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:57:07,654 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:57:07,686 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:57:07,686 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:57:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:57:07,839 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:57:07,839 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-04-05 17:57:07,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-04-05 17:57:07,840 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-04-05 17:57:07,840 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-04-05 17:57:07,841 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 10 states. [2018-04-05 17:57:07,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:57:07,879 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2018-04-05 17:57:07,880 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-04-05 17:57:07,880 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2018-04-05 17:57:07,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:57:07,881 INFO L225 Difference]: With dead ends: 42 [2018-04-05 17:57:07,881 INFO L226 Difference]: Without dead ends: 32 [2018-04-05 17:57:07,882 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2018-04-05 17:57:07,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-04-05 17:57:07,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2018-04-05 17:57:07,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-04-05 17:57:07,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2018-04-05 17:57:07,888 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 23 [2018-04-05 17:57:07,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:57:07,888 INFO L459 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2018-04-05 17:57:07,889 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-04-05 17:57:07,889 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2018-04-05 17:57:07,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-05 17:57:07,890 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:57:07,890 INFO L355 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:57:07,890 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-05 17:57:07,890 INFO L82 PathProgramCache]: Analyzing trace with hash -227650003, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:57:07,900 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:57:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:57:07,919 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:57:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:57:07,978 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:57:08,394 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:57:08,428 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:57:08,428 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2018-04-05 17:57:08,429 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-04-05 17:57:08,429 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-04-05 17:57:08,429 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2018-04-05 17:57:08,430 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 18 states. [2018-04-05 17:57:08,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:57:08,548 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2018-04-05 17:57:08,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-04-05 17:57:08,548 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 31 [2018-04-05 17:57:08,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:57:08,550 INFO L225 Difference]: With dead ends: 58 [2018-04-05 17:57:08,550 INFO L226 Difference]: Without dead ends: 48 [2018-04-05 17:57:08,551 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=151, Invalid=191, Unknown=0, NotChecked=0, Total=342 [2018-04-05 17:57:08,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-04-05 17:57:08,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-04-05 17:57:08,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-04-05 17:57:08,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2018-04-05 17:57:08,559 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 31 [2018-04-05 17:57:08,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:57:08,559 INFO L459 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2018-04-05 17:57:08,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-04-05 17:57:08,560 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2018-04-05 17:57:08,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-04-05 17:57:08,561 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:57:08,561 INFO L355 BasicCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:57:08,561 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-05 17:57:08,562 INFO L82 PathProgramCache]: Analyzing trace with hash 1304328245, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:57:08,569 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:57:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:57:08,590 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:57:08,789 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:57:08,790 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:57:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:57:09,248 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:57:09,248 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2018-04-05 17:57:09,248 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-04-05 17:57:09,249 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-04-05 17:57:09,249 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=591, Unknown=0, NotChecked=0, Total=1122 [2018-04-05 17:57:09,250 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 34 states. [2018-04-05 17:57:10,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:57:10,480 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2018-04-05 17:57:10,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-04-05 17:57:10,491 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 47 [2018-04-05 17:57:10,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:57:10,493 INFO L225 Difference]: With dead ends: 90 [2018-04-05 17:57:10,493 INFO L226 Difference]: Without dead ends: 80 [2018-04-05 17:57:10,494 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=551, Invalid=639, Unknown=0, NotChecked=0, Total=1190 [2018-04-05 17:57:10,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-04-05 17:57:10,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-04-05 17:57:10,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-04-05 17:57:10,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2018-04-05 17:57:10,522 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 47 [2018-04-05 17:57:10,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:57:10,523 INFO L459 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2018-04-05 17:57:10,523 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-04-05 17:57:10,523 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2018-04-05 17:57:10,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-04-05 17:57:10,532 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:57:10,533 INFO L355 BasicCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:57:10,534 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-05 17:57:10,534 INFO L82 PathProgramCache]: Analyzing trace with hash -824210363, now seen corresponding path program 4 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:57:10,561 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:57:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:57:10,656 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:57:15,207 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:57:15,208 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:57:15,896 WARN L148 SmtUtils]: Spent 683ms on a formula simplification that was a NOOP. DAG size: 98 [2018-04-05 17:57:16,345 WARN L148 SmtUtils]: Spent 446ms on a formula simplification that was a NOOP. DAG size: 98 [2018-04-05 17:57:19,040 WARN L148 SmtUtils]: Spent 147ms on a formula simplification that was a NOOP. DAG size: 8 [2018-04-05 17:57:27,295 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:57:27,354 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:57:27,354 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2018-04-05 17:57:27,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 66 states [2018-04-05 17:57:27,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2018-04-05 17:57:27,358 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1852, Invalid=2438, Unknown=0, NotChecked=0, Total=4290 [2018-04-05 17:57:27,359 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 66 states. [2018-04-05 17:57:28,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:57:28,378 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2018-04-05 17:57:28,380 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-04-05 17:57:28,380 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 79 [2018-04-05 17:57:28,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:57:28,382 INFO L225 Difference]: With dead ends: 110 [2018-04-05 17:57:28,382 INFO L226 Difference]: Without dead ends: 100 [2018-04-05 17:57:28,387 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 690 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=1888, Invalid=2534, Unknown=0, NotChecked=0, Total=4422 [2018-04-05 17:57:28,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-04-05 17:57:28,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2018-04-05 17:57:28,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2018-04-05 17:57:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2018-04-05 17:57:28,424 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 79 [2018-04-05 17:57:28,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:57:28,424 INFO L459 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2018-04-05 17:57:28,425 INFO L460 AbstractCegarLoop]: Interpolant automaton has 66 states. [2018-04-05 17:57:28,428 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2018-04-05 17:57:28,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-04-05 17:57:28,430 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:57:28,430 INFO L355 BasicCegarLoop]: trace histogram [40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:57:28,430 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr1RequiresViolation, mainErr2EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation]=== [2018-04-05 17:57:28,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1326592079, now seen corresponding path program 5 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:57:28,454 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:57:28,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:57:28,590 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:57:28,681 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 17:57:28,683 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-04-05 17:57:28,683 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 17:57:28,689 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-05 17:57:28,690 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:5 [2018-04-05 17:57:28,944 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_~#cstats~0.base| Int)) (and (= |c_#valid| (store |c_old(#valid)| |main_~#cstats~0.base| 0)) (= 0 (select |c_old(#valid)| |main_~#cstats~0.base|)))) is different from true [2018-04-05 17:57:29,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1600 trivial. 0 not checked. [2018-04-05 17:57:29,059 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:57:29,184 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_~#cstats~0.base_17| Int)) (or (= (store |c_#valid| |v_main_~#cstats~0.base_17| 0) |c_old(#valid)|) (not (= 0 (select |c_#valid| |v_main_~#cstats~0.base_17|))))) is different from false [2018-04-05 17:57:29,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1600 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1600 trivial. 0 not checked. [2018-04-05 17:57:29,290 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 17:57:29,290 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2018-04-05 17:57:29,290 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-05 17:57:29,291 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-05 17:57:29,291 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=21, Unknown=2, NotChecked=18, Total=56 [2018-04-05 17:57:29,291 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 8 states. [2018-04-05 17:57:29,355 WARN L1011 $PredicateComparison]: unable to prove that (and (forall ((|v_main_~#cstats~0.base_17| Int)) (or (= (store |c_#valid| |v_main_~#cstats~0.base_17| 0) |c_old(#valid)|) (not (= 0 (select |c_#valid| |v_main_~#cstats~0.base_17|))))) (= |c_#valid| |c_old(#valid)|)) is different from false [2018-04-05 17:57:29,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:57:29,769 INFO L93 Difference]: Finished difference Result 100 states and 100 transitions. [2018-04-05 17:57:29,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-04-05 17:57:29,769 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 99 [2018-04-05 17:57:29,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:57:29,770 INFO L225 Difference]: With dead ends: 100 [2018-04-05 17:57:29,770 INFO L226 Difference]: Without dead ends: 0 [2018-04-05 17:57:29,771 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 190 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=52, Unknown=3, NotChecked=48, Total=132 [2018-04-05 17:57:29,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-04-05 17:57:29,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-04-05 17:57:29,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-04-05 17:57:29,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-04-05 17:57:29,776 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 99 [2018-04-05 17:57:29,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:57:29,776 INFO L459 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-04-05 17:57:29,776 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-05 17:57:29,776 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-04-05 17:57:29,776 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-04-05 17:57:29,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-04-05 17:57:30,155 WARN L151 SmtUtils]: Spent 283ms on a formula simplification. DAG size of input: 159 DAG size of output 9 [2018-04-05 17:57:30,393 WARN L151 SmtUtils]: Spent 134ms on a formula simplification. DAG size of input: 18 DAG size of output 16 [2018-04-05 17:57:30,426 INFO L416 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-04-05 17:57:30,427 INFO L416 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-04-05 17:57:30,427 INFO L412 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-04-05 17:57:30,427 INFO L416 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-04-05 17:57:30,427 INFO L419 ceAbstractionStarter]: At program point #Ultimate.C_memsetENTRY(line -1) the Hoare annotation is: true [2018-04-05 17:57:30,427 INFO L416 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-04-05 17:57:30,427 INFO L416 ceAbstractionStarter]: For program point L-1'(line -1) no Hoare annotation was computed. [2018-04-05 17:57:30,428 INFO L419 ceAbstractionStarter]: At program point L-1''(line -1) the Hoare annotation is: true [2018-04-05 17:57:30,428 INFO L416 ceAbstractionStarter]: For program point #Ultimate.C_memsetFINAL(line -1) no Hoare annotation was computed. [2018-04-05 17:57:30,428 INFO L416 ceAbstractionStarter]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2018-04-05 17:57:30,428 INFO L416 ceAbstractionStarter]: For program point #Ultimate.C_memsetEXIT(line -1) no Hoare annotation was computed. [2018-04-05 17:57:30,428 INFO L419 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-04-05 17:57:30,428 INFO L419 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-04-05 17:57:30,428 INFO L416 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-04-05 17:57:30,428 INFO L416 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-04-05 17:57:30,429 INFO L412 ceAbstractionStarter]: At program point mainENTRY(lines 20 24) the Hoare annotation is: (= |#valid| |old(#valid)|) [2018-04-05 17:57:30,429 INFO L416 ceAbstractionStarter]: For program point mainErr1RequiresViolation(line 22) no Hoare annotation was computed. [2018-04-05 17:57:30,429 INFO L416 ceAbstractionStarter]: For program point mainFINAL(lines 20 24) no Hoare annotation was computed. [2018-04-05 17:57:30,429 INFO L416 ceAbstractionStarter]: For program point mainErr2EnsuresViolationMEMORY_LEAK(lines 20 24) no Hoare annotation was computed. [2018-04-05 17:57:30,429 INFO L412 ceAbstractionStarter]: At program point L21(line 21) the Hoare annotation is: (and (= |#valid| (store |old(#valid)| |main_~#cstats~0.base| 1)) (= 0 (select |old(#valid)| |main_~#cstats~0.base|)) (= 40 (select |#length| |main_~#cstats~0.base|)) (= 0 |main_~#cstats~0.offset|)) [2018-04-05 17:57:30,429 INFO L416 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-04-05 17:57:30,430 INFO L416 ceAbstractionStarter]: For program point L22(line 22) no Hoare annotation was computed. [2018-04-05 17:57:30,430 INFO L416 ceAbstractionStarter]: For program point mainErr0RequiresViolation(line 22) no Hoare annotation was computed. [2018-04-05 17:57:30,430 INFO L416 ceAbstractionStarter]: For program point L21''(line 21) no Hoare annotation was computed. [2018-04-05 17:57:30,430 INFO L416 ceAbstractionStarter]: For program point L21'(line 21) no Hoare annotation was computed. [2018-04-05 17:57:30,430 INFO L416 ceAbstractionStarter]: For program point mainEXIT(lines 20 24) no Hoare annotation was computed. [2018-04-05 17:57:30,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.04 05:57:30 BoogieIcfgContainer [2018-04-05 17:57:30,449 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-04-05 17:57:30,450 INFO L168 Benchmark]: Toolchain (without parser) took 24091.55 ms. Allocated memory was 305.7 MB in the beginning and 544.7 MB in the end (delta: 239.1 MB). Free memory was 245.2 MB in the beginning and 465.0 MB in the end (delta: -219.8 MB). Peak memory consumption was 19.3 MB. Max. memory is 5.3 GB. [2018-04-05 17:57:30,456 INFO L168 Benchmark]: CDTParser took 0.63 ms. Allocated memory is still 305.7 MB. Free memory is still 267.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-05 17:57:30,457 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.65 ms. Allocated memory is still 305.7 MB. Free memory was 245.2 MB in the beginning and 236.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. [2018-04-05 17:57:30,457 INFO L168 Benchmark]: Boogie Preprocessor took 35.90 ms. Allocated memory is still 305.7 MB. Free memory was 236.1 MB in the beginning and 234.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-04-05 17:57:30,461 INFO L168 Benchmark]: RCFGBuilder took 292.09 ms. Allocated memory was 305.7 MB in the beginning and 465.6 MB in the end (delta: 159.9 MB). Free memory was 234.1 MB in the beginning and 435.6 MB in the end (delta: -201.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 5.3 GB. [2018-04-05 17:57:30,461 INFO L168 Benchmark]: TraceAbstraction took 23524.62 ms. Allocated memory was 465.6 MB in the beginning and 544.7 MB in the end (delta: 79.2 MB). Free memory was 435.6 MB in the beginning and 465.0 MB in the end (delta: -29.4 MB). Peak memory consumption was 49.8 MB. Max. memory is 5.3 GB. [2018-04-05 17:57:30,473 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.63 ms. Allocated memory is still 305.7 MB. Free memory is still 267.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 233.65 ms. Allocated memory is still 305.7 MB. Free memory was 245.2 MB in the beginning and 236.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.90 ms. Allocated memory is still 305.7 MB. Free memory was 236.1 MB in the beginning and 234.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 292.09 ms. Allocated memory was 305.7 MB in the beginning and 465.6 MB in the end (delta: 159.9 MB). Free memory was 234.1 MB in the beginning and 435.6 MB in the end (delta: -201.5 MB). Peak memory consumption was 23.2 MB. Max. memory is 5.3 GB. * TraceAbstraction took 23524.62 ms. Allocated memory was 465.6 MB in the beginning and 544.7 MB in the end (delta: 79.2 MB). Free memory was 435.6 MB in the beginning and 465.0 MB in the end (delta: -29.4 MB). Peak memory consumption was 49.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 22]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 26 locations, 3 error locations. SAFE Result, 23.4s OverallTime, 8 OverallIterations, 40 TraceHistogramMax, 3.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.6s HoareAnnotationTime, HoareTripleCheckerStatistics: 148 SDtfs, 222 SDslu, 316 SDs, 0 SdLazy, 340 SolverSat, 225 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 629 GetRequests, 481 SyntacticMatches, 6 SemanticMatches, 142 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 17.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred in iteration=7, 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: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 47 NumberOfFragments, 30 HoareAnnotationTreeSize, 7 FomulaSimplifications, 799 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 7 FomulaSimplificationsInter, 54 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 18.8s InterpolantComputationTime, 314 NumberOfCodeBlocks, 314 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 612 ConstructedInterpolants, 89 QuantifiedInterpolants, 159292 SizeOfPredicates, 7 NumberOfNonLiveVariables, 720 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 16 InterpolantComputations, 8 PerfectInterpolantSequences, 3200/5472 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memset2_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-05_17-57-30-495.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memset2_true-valid-memsafety_true-termination.c_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-04-05_17-57-30-495.csv Received shutdown request...