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/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test8_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 09:33:08,017 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 09:33:08,019 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 09:33:08,031 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 09:33:08,031 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 09:33:08,032 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 09:33:08,033 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 09:33:08,034 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 09:33:08,036 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 09:33:08,036 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 09:33:08,037 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 09:33:08,037 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 09:33:08,038 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 09:33:08,039 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 09:33:08,040 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 09:33:08,042 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 09:33:08,043 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 09:33:08,045 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 09:33:08,046 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 09:33:08,047 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 09:33:08,049 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 09:33:08,053 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 09:33:08,053 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 09:33:08,054 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-02 09:33:08,062 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 09:33:08,062 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 09:33:08,063 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 09:33:08,063 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 09:33:08,063 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 09:33:08,063 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 09:33:08,063 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 09:33:08,063 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 09:33:08,063 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 09:33:08,064 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 09:33:08,064 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 09:33:08,064 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 09:33:08,064 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 09:33:08,064 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 09:33:08,064 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 09:33:08,064 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 09:33:08,064 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 09:33:08,064 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 09:33:08,064 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 09:33:08,065 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 09:33:08,065 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 09:33:08,065 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 09:33:08,065 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 09:33:08,065 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 09:33:08,065 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 09:33:08,094 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 09:33:08,103 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 09:33:08,105 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 09:33:08,106 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 09:33:08,106 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 09:33:08,107 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test8_true-valid-memsafety_true-termination.i [2018-02-02 09:33:08,236 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 09:33:08,237 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 09:33:08,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 09:33:08,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 09:33:08,242 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 09:33:08,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:33:08" (1/1) ... [2018-02-02 09:33:08,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc89e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:33:08, skipping insertion in model container [2018-02-02 09:33:08,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:33:08" (1/1) ... [2018-02-02 09:33:08,256 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 09:33:08,290 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 09:33:08,372 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 09:33:08,384 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 09:33:08,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:33:08 WrapperNode [2018-02-02 09:33:08,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 09:33:08,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 09:33:08,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 09:33:08,391 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 09:33:08,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:33:08" (1/1) ... [2018-02-02 09:33:08,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:33:08" (1/1) ... [2018-02-02 09:33:08,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:33:08" (1/1) ... [2018-02-02 09:33:08,408 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:33:08" (1/1) ... [2018-02-02 09:33:08,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:33:08" (1/1) ... [2018-02-02 09:33:08,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:33:08" (1/1) ... [2018-02-02 09:33:08,412 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:33:08" (1/1) ... [2018-02-02 09:33:08,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 09:33:08,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 09:33:08,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 09:33:08,415 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 09:33:08,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:33:08" (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 09:33:08,451 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 09:33:08,451 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 09:33:08,451 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-02 09:33:08,452 INFO L136 BoogieDeclarations]: Found implementation of procedure alloc_8 [2018-02-02 09:33:08,452 INFO L136 BoogieDeclarations]: Found implementation of procedure free_8 [2018-02-02 09:33:08,452 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-02 09:33:08,452 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 09:33:08,452 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 09:33:08,452 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 09:33:08,452 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 09:33:08,452 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-02 09:33:08,452 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-02 09:33:08,452 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 09:33:08,452 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-02 09:33:08,452 INFO L128 BoogieDeclarations]: Found specification of procedure alloc_8 [2018-02-02 09:33:08,452 INFO L128 BoogieDeclarations]: Found specification of procedure free_8 [2018-02-02 09:33:08,453 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-02 09:33:08,453 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 09:33:08,453 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 09:33:08,453 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 09:33:08,552 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 09:33:08,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:33:08 BoogieIcfgContainer [2018-02-02 09:33:08,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 09:33:08,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 09:33:08,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 09:33:08,555 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 09:33:08,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:33:08" (1/3) ... [2018-02-02 09:33:08,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6451a03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:33:08, skipping insertion in model container [2018-02-02 09:33:08,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:33:08" (2/3) ... [2018-02-02 09:33:08,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6451a03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:33:08, skipping insertion in model container [2018-02-02 09:33:08,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:33:08" (3/3) ... [2018-02-02 09:33:08,558 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test8_true-valid-memsafety_true-termination.i [2018-02-02 09:33:08,564 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 09:33:08,569 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-02-02 09:33:08,596 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 09:33:08,596 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 09:33:08,596 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 09:33:08,596 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 09:33:08,596 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 09:33:08,596 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 09:33:08,596 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 09:33:08,597 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 09:33:08,597 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 09:33:08,608 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2018-02-02 09:33:08,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-02 09:33:08,617 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:33:08,618 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 09:33:08,618 INFO L371 AbstractCegarLoop]: === Iteration 1 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 09:33:08,622 INFO L82 PathProgramCache]: Analyzing trace with hash 132716426, now seen corresponding path program 1 times [2018-02-02 09:33:08,623 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:33:08,624 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:33:08,675 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:33:08,675 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:33:08,675 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:33:08,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:33:08,728 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:33:08,827 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 09:33:08,829 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:33:08,830 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 09:33:08,831 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 09:33:08,843 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 09:33:08,843 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:33:08,845 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2018-02-02 09:33:08,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:33:08,917 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2018-02-02 09:33:08,917 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 09:33:08,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-02-02 09:33:08,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:33:08,967 INFO L225 Difference]: With dead ends: 41 [2018-02-02 09:33:08,967 INFO L226 Difference]: Without dead ends: 38 [2018-02-02 09:33:08,968 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-02-02 09:33:08,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-02-02 09:33:08,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2018-02-02 09:33:08,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-02-02 09:33:08,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2018-02-02 09:33:08,996 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2018-02-02 09:33:08,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:33:08,996 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2018-02-02 09:33:08,996 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 09:33:08,996 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2018-02-02 09:33:08,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-02 09:33:08,997 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:33:08,997 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 09:33:08,997 INFO L371 AbstractCegarLoop]: === Iteration 2 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 09:33:08,997 INFO L82 PathProgramCache]: Analyzing trace with hash 132716427, now seen corresponding path program 1 times [2018-02-02 09:33:08,997 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:33:08,997 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:33:08,998 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:33:08,998 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:33:08,999 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:33:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:33:09,012 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:33:09,044 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 09:33:09,045 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:33:09,045 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 09:33:09,046 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 09:33:09,046 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 09:33:09,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 09:33:09,047 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 5 states. [2018-02-02 09:33:09,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:33:09,073 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2018-02-02 09:33:09,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 09:33:09,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-02-02 09:33:09,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:33:09,074 INFO L225 Difference]: With dead ends: 40 [2018-02-02 09:33:09,074 INFO L226 Difference]: Without dead ends: 40 [2018-02-02 09:33:09,074 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-02-02 09:33:09,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-02-02 09:33:09,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-02-02 09:33:09,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-02-02 09:33:09,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-02-02 09:33:09,078 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 18 [2018-02-02 09:33:09,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:33:09,079 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-02-02 09:33:09,079 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 09:33:09,079 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-02-02 09:33:09,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 09:33:09,079 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:33:09,079 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:33:09,079 INFO L371 AbstractCegarLoop]: === Iteration 3 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 09:33:09,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1026806264, now seen corresponding path program 1 times [2018-02-02 09:33:09,080 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:33:09,080 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:33:09,080 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:33:09,081 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:33:09,081 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:33:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:33:09,090 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:33:09,161 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 09:33:09,162 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:33:09,162 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 09:33:09,162 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 09:33:09,163 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 09:33:09,163 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:33:09,163 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 6 states. [2018-02-02 09:33:09,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:33:09,212 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2018-02-02 09:33:09,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 09:33:09,212 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-02-02 09:33:09,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:33:09,213 INFO L225 Difference]: With dead ends: 38 [2018-02-02 09:33:09,213 INFO L226 Difference]: Without dead ends: 38 [2018-02-02 09:33:09,213 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-02-02 09:33:09,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-02-02 09:33:09,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-02-02 09:33:09,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-02-02 09:33:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2018-02-02 09:33:09,218 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 20 [2018-02-02 09:33:09,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:33:09,218 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2018-02-02 09:33:09,219 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 09:33:09,219 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2018-02-02 09:33:09,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-02 09:33:09,219 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:33:09,219 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:33:09,220 INFO L371 AbstractCegarLoop]: === Iteration 4 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 09:33:09,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1026806263, now seen corresponding path program 1 times [2018-02-02 09:33:09,220 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:33:09,220 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:33:09,221 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:33:09,221 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:33:09,222 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:33:09,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:33:09,234 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:33:09,279 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 09:33:09,280 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:33:09,280 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 09:33:09,280 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 09:33:09,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 09:33:09,281 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:33:09,281 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 6 states. [2018-02-02 09:33:09,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:33:09,346 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2018-02-02 09:33:09,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 09:33:09,347 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-02-02 09:33:09,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:33:09,348 INFO L225 Difference]: With dead ends: 40 [2018-02-02 09:33:09,348 INFO L226 Difference]: Without dead ends: 40 [2018-02-02 09:33:09,348 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-02 09:33:09,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-02-02 09:33:09,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2018-02-02 09:33:09,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-02-02 09:33:09,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-02-02 09:33:09,352 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 20 [2018-02-02 09:33:09,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:33:09,352 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-02-02 09:33:09,352 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 09:33:09,352 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-02-02 09:33:09,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-02 09:33:09,353 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:33:09,353 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:33:09,353 INFO L371 AbstractCegarLoop]: === Iteration 5 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 09:33:09,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1070854066, now seen corresponding path program 1 times [2018-02-02 09:33:09,353 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:33:09,353 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:33:09,355 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:33:09,355 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:33:09,355 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:33:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:33:09,365 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:33:09,389 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 09:33:09,389 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:33:09,389 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 09:33:09,390 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 09:33:09,390 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 09:33:09,390 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 09:33:09,390 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 3 states. [2018-02-02 09:33:09,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:33:09,409 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2018-02-02 09:33:09,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 09:33:09,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2018-02-02 09:33:09,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:33:09,410 INFO L225 Difference]: With dead ends: 39 [2018-02-02 09:33:09,410 INFO L226 Difference]: Without dead ends: 35 [2018-02-02 09:33:09,410 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 09:33:09,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-02-02 09:33:09,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-02-02 09:33:09,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-02-02 09:33:09,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2018-02-02 09:33:09,416 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 23 [2018-02-02 09:33:09,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:33:09,416 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2018-02-02 09:33:09,416 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 09:33:09,416 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2018-02-02 09:33:09,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-02 09:33:09,417 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:33:09,417 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:33:09,417 INFO L371 AbstractCegarLoop]: === Iteration 6 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 09:33:09,417 INFO L82 PathProgramCache]: Analyzing trace with hash -980957032, now seen corresponding path program 1 times [2018-02-02 09:33:09,417 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:33:09,417 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:33:09,418 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:33:09,418 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:33:09,418 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:33:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:33:09,424 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:33:09,465 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 09:33:09,465 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:33:09,465 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 09:33:09,465 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 09:33:09,466 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 09:33:09,466 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 09:33:09,466 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 6 states. [2018-02-02 09:33:09,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:33:09,509 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-02-02 09:33:09,509 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 09:33:09,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-02-02 09:33:09,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:33:09,510 INFO L225 Difference]: With dead ends: 37 [2018-02-02 09:33:09,510 INFO L226 Difference]: Without dead ends: 30 [2018-02-02 09:33:09,510 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 09:33:09,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-02-02 09:33:09,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2018-02-02 09:33:09,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-02-02 09:33:09,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2018-02-02 09:33:09,512 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2018-02-02 09:33:09,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:33:09,512 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2018-02-02 09:33:09,512 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 09:33:09,512 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2018-02-02 09:33:09,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-02 09:33:09,513 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:33:09,513 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:33:09,513 INFO L371 AbstractCegarLoop]: === Iteration 7 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 09:33:09,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1127655280, now seen corresponding path program 1 times [2018-02-02 09:33:09,513 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:33:09,513 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:33:09,514 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:33:09,514 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:33:09,514 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:33:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:33:09,521 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:33:09,556 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 09:33:09,556 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:33:09,556 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 09:33:09,557 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 09:33:09,557 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 09:33:09,557 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-02 09:33:09,557 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2018-02-02 09:33:09,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:33:09,597 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2018-02-02 09:33:09,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 09:33:09,598 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2018-02-02 09:33:09,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:33:09,598 INFO L225 Difference]: With dead ends: 27 [2018-02-02 09:33:09,598 INFO L226 Difference]: Without dead ends: 27 [2018-02-02 09:33:09,598 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 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 09:33:09,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-02-02 09:33:09,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2018-02-02 09:33:09,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-02-02 09:33:09,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2018-02-02 09:33:09,600 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 25 [2018-02-02 09:33:09,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:33:09,600 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2018-02-02 09:33:09,600 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 09:33:09,600 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2018-02-02 09:33:09,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-02 09:33:09,601 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 09:33:09,601 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 09:33:09,601 INFO L371 AbstractCegarLoop]: === Iteration 8 === [free_8Err0RequiresViolation, free_8Err1RequiresViolation, mainErr0EnsuresViolation]=== [2018-02-02 09:33:09,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1553172630, now seen corresponding path program 1 times [2018-02-02 09:33:09,601 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 09:33:09,601 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 09:33:09,602 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:33:09,602 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 09:33:09,602 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 09:33:09,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 09:33:09,614 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 09:33:09,710 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 09:33:09,710 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 09:33:09,710 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-02 09:33:09,710 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 09:33:09,710 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 09:33:09,711 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-02-02 09:33:09,711 INFO L87 Difference]: Start difference. First operand 27 states and 26 transitions. Second operand 9 states. [2018-02-02 09:33:09,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 09:33:09,813 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2018-02-02 09:33:09,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 09:33:09,813 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-02-02 09:33:09,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 09:33:09,814 INFO L225 Difference]: With dead ends: 26 [2018-02-02 09:33:09,814 INFO L226 Difference]: Without dead ends: 0 [2018-02-02 09:33:09,814 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-02-02 09:33:09,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-02-02 09:33:09,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-02-02 09:33:09,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-02-02 09:33:09,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-02-02 09:33:09,814 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2018-02-02 09:33:09,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 09:33:09,814 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-02-02 09:33:09,815 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 09:33:09,815 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-02-02 09:33:09,815 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-02-02 09:33:09,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:33:09 BoogieIcfgContainer [2018-02-02 09:33:09,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 09:33:09,820 INFO L168 Benchmark]: Toolchain (without parser) took 1583.53 ms. Allocated memory was 398.5 MB in the beginning and 597.7 MB in the end (delta: 199.2 MB). Free memory was 355.3 MB in the beginning and 418.1 MB in the end (delta: -62.7 MB). Peak memory consumption was 136.5 MB. Max. memory is 5.3 GB. [2018-02-02 09:33:09,821 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 398.5 MB. Free memory is still 361.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 09:33:09,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.05 ms. Allocated memory is still 398.5 MB. Free memory was 355.3 MB in the beginning and 343.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 5.3 GB. [2018-02-02 09:33:09,822 INFO L168 Benchmark]: Boogie Preprocessor took 23.70 ms. Allocated memory is still 398.5 MB. Free memory was 342.1 MB in the beginning and 340.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-02 09:33:09,822 INFO L168 Benchmark]: RCFGBuilder took 138.59 ms. Allocated memory is still 398.5 MB. Free memory was 340.8 MB in the beginning and 326.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-02-02 09:33:09,822 INFO L168 Benchmark]: TraceAbstraction took 1266.41 ms. Allocated memory was 398.5 MB in the beginning and 597.7 MB in the end (delta: 199.2 MB). Free memory was 326.8 MB in the beginning and 418.1 MB in the end (delta: -91.3 MB). Peak memory consumption was 107.9 MB. Max. memory is 5.3 GB. [2018-02-02 09:33:09,823 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 398.5 MB. Free memory is still 361.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 152.05 ms. Allocated memory is still 398.5 MB. Free memory was 355.3 MB in the beginning and 343.4 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 23.70 ms. Allocated memory is still 398.5 MB. Free memory was 342.1 MB in the beginning and 340.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 138.59 ms. Allocated memory is still 398.5 MB. Free memory was 340.8 MB in the beginning and 326.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1266.41 ms. Allocated memory was 398.5 MB in the beginning and 597.7 MB in the end (delta: 199.2 MB). Free memory was 326.8 MB in the beginning and 418.1 MB in the end (delta: -91.3 MB). Peak memory consumption was 107.9 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 1450]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 32 locations, 3 error locations. SAFE Result, 1.2s OverallTime, 8 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 207 SDtfs, 131 SDslu, 486 SDs, 0 SdLazy, 274 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 18 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 166 ConstructedInterpolants, 0 QuantifiedInterpolants, 12081 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 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/memleaks_test8_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_09-33-09-830.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test8_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_09-33-09-830.csv Received shutdown request...