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_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-acfac67 [2018-01-28 22:32:46,142 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-28 22:32:46,144 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-28 22:32:46,160 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-28 22:32:46,160 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-28 22:32:46,161 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-28 22:32:46,163 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-28 22:32:46,164 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-28 22:32:46,166 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-28 22:32:46,166 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-28 22:32:46,167 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-28 22:32:46,167 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-28 22:32:46,168 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-28 22:32:46,169 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-28 22:32:46,170 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-28 22:32:46,173 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-28 22:32:46,175 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-28 22:32:46,177 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-28 22:32:46,178 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-28 22:32:46,179 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-28 22:32:46,182 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-28 22:32:46,187 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-28 22:32:46,187 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-28 22:32:46,188 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-28 22:32:46,197 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-28 22:32:46,198 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-28 22:32:46,198 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-28 22:32:46,199 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-28 22:32:46,199 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-28 22:32:46,199 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-28 22:32:46,199 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-28 22:32:46,200 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-28 22:32:46,200 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-28 22:32:46,200 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-28 22:32:46,200 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-28 22:32:46,201 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-28 22:32:46,201 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-28 22:32:46,201 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-28 22:32:46,201 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-28 22:32:46,201 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-28 22:32:46,201 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-28 22:32:46,202 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-28 22:32:46,202 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-28 22:32:46,202 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-28 22:32:46,202 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-28 22:32:46,203 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-28 22:32:46,203 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-28 22:32:46,203 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-28 22:32:46,203 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-28 22:32:46,203 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-28 22:32:46,204 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-28 22:32:46,204 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-28 22:32:46,204 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-28 22:32:46,204 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-28 22:32:46,204 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-28 22:32:46,204 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-28 22:32:46,205 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-28 22:32:46,205 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-28 22:32:46,240 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-28 22:32:46,252 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-28 22:32:46,256 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-28 22:32:46,258 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-28 22:32:46,258 INFO L276 PluginConnector]: CDTParser initialized [2018-01-28 22:32:46,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i [2018-01-28 22:32:46,455 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-28 22:32:46,459 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-28 22:32:46,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-28 22:32:46,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-28 22:32:46,466 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-28 22:32:46,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:32:46" (1/1) ... [2018-01-28 22:32:46,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57fba5f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:32:46, skipping insertion in model container [2018-01-28 22:32:46,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:32:46" (1/1) ... [2018-01-28 22:32:46,483 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 22:32:46,532 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 22:32:46,641 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 22:32:46,654 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 22:32:46,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:32:46 WrapperNode [2018-01-28 22:32:46,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-28 22:32:46,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-28 22:32:46,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-28 22:32:46,662 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-28 22:32:46,679 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:32:46" (1/1) ... [2018-01-28 22:32:46,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:32:46" (1/1) ... [2018-01-28 22:32:46,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:32:46" (1/1) ... [2018-01-28 22:32:46,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:32:46" (1/1) ... [2018-01-28 22:32:46,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:32:46" (1/1) ... [2018-01-28 22:32:46,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:32:46" (1/1) ... [2018-01-28 22:32:46,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:32:46" (1/1) ... [2018-01-28 22:32:46,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-28 22:32:46,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-28 22:32:46,700 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-28 22:32:46,700 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-28 22:32:46,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:32:46" (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 [2018-01-28 22:32:46,747 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-28 22:32:46,748 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-28 22:32:46,748 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-28 22:32:46,748 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-28 22:32:46,748 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-28 22:32:46,748 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-28 22:32:46,748 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-28 22:32:46,748 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-28 22:32:46,748 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-28 22:32:46,749 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-28 22:32:46,749 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-28 22:32:46,749 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-28 22:32:46,749 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-28 22:32:46,749 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-28 22:32:46,749 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-28 22:32:46,750 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-28 22:32:46,894 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-28 22:32:46,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:32:46 BoogieIcfgContainer [2018-01-28 22:32:46,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-28 22:32:46,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-28 22:32:46,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-28 22:32:46,898 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-28 22:32:46,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 10:32:46" (1/3) ... [2018-01-28 22:32:46,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207cea5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:32:46, skipping insertion in model container [2018-01-28 22:32:46,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:32:46" (2/3) ... [2018-01-28 22:32:46,900 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207cea5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:32:46, skipping insertion in model container [2018-01-28 22:32:46,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:32:46" (3/3) ... [2018-01-28 22:32:46,902 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test4_false-valid-memtrack_true-termination.i [2018-01-28 22:32:46,909 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-28 22:32:46,916 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-28 22:32:46,954 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-28 22:32:46,954 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-28 22:32:46,955 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-28 22:32:46,955 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-28 22:32:46,955 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-28 22:32:46,955 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-28 22:32:46,955 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-28 22:32:46,955 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-28 22:32:46,956 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-28 22:32:46,977 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2018-01-28 22:32:46,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-28 22:32:46,983 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:32:46,983 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:32:46,984 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-28 22:32:46,987 INFO L82 PathProgramCache]: Analyzing trace with hash -706503190, now seen corresponding path program 1 times [2018-01-28 22:32:46,989 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:32:46,990 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:32:47,047 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:32:47,048 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:32:47,048 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:32:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:32:47,101 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:32:47,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:32:47,193 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:32:47,193 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-28 22:32:47,195 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-28 22:32:47,209 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-28 22:32:47,210 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-28 22:32:47,213 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2018-01-28 22:32:47,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:32:47,373 INFO L93 Difference]: Finished difference Result 49 states and 55 transitions. [2018-01-28 22:32:47,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-28 22:32:47,375 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-01-28 22:32:47,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:32:47,386 INFO L225 Difference]: With dead ends: 49 [2018-01-28 22:32:47,386 INFO L226 Difference]: Without dead ends: 42 [2018-01-28 22:32:47,389 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-28 22:32:47,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-01-28 22:32:47,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2018-01-28 22:32:47,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-01-28 22:32:47,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2018-01-28 22:32:47,429 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 21 [2018-01-28 22:32:47,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:32:47,429 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2018-01-28 22:32:47,429 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-28 22:32:47,429 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2018-01-28 22:32:47,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-01-28 22:32:47,431 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:32:47,432 INFO L330 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] [2018-01-28 22:32:47,432 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-28 22:32:47,432 INFO L82 PathProgramCache]: Analyzing trace with hash 2003875197, now seen corresponding path program 1 times [2018-01-28 22:32:47,432 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:32:47,432 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:32:47,434 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:32:47,434 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:32:47,434 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:32:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:32:47,458 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:32:47,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:32:47,540 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:32:47,541 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-28 22:32:47,543 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-28 22:32:47,543 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-28 22:32:47,543 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-28 22:32:47,544 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 6 states. [2018-01-28 22:32:47,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:32:47,601 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2018-01-28 22:32:47,601 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-28 22:32:47,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-01-28 22:32:47,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:32:47,603 INFO L225 Difference]: With dead ends: 48 [2018-01-28 22:32:47,603 INFO L226 Difference]: Without dead ends: 44 [2018-01-28 22:32:47,604 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-28 22:32:47,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-01-28 22:32:47,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2018-01-28 22:32:47,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-01-28 22:32:47,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-01-28 22:32:47,611 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 22 [2018-01-28 22:32:47,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:32:47,612 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-01-28 22:32:47,612 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-28 22:32:47,612 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-01-28 22:32:47,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-28 22:32:47,614 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:32:47,614 INFO L330 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:32:47,614 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-28 22:32:47,614 INFO L82 PathProgramCache]: Analyzing trace with hash -675106715, now seen corresponding path program 1 times [2018-01-28 22:32:47,615 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:32:47,615 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:32:47,616 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:32:47,617 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:32:47,617 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:32:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:32:47,631 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:32:47,699 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-28 22:32:47,699 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-28 22:32:47,728 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-28 22:32:47,735 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:32:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:32:47,768 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-28 22:32:47,836 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-28 22:32:47,865 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-28 22:32:47,866 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2018-01-28 22:32:47,866 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-28 22:32:47,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-28 22:32:47,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-01-28 22:32:47,866 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 8 states. [2018-01-28 22:32:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:32:47,918 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2018-01-28 22:32:47,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-28 22:32:47,919 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2018-01-28 22:32:47,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:32:47,920 INFO L225 Difference]: With dead ends: 62 [2018-01-28 22:32:47,920 INFO L226 Difference]: Without dead ends: 39 [2018-01-28 22:32:47,921 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-01-28 22:32:47,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-01-28 22:32:47,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-01-28 22:32:47,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-01-28 22:32:47,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2018-01-28 22:32:47,928 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 29 [2018-01-28 22:32:47,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:32:47,929 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2018-01-28 22:32:47,929 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-28 22:32:47,929 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2018-01-28 22:32:47,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-28 22:32:47,930 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:32:47,930 INFO L330 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:32:47,931 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-28 22:32:47,931 INFO L82 PathProgramCache]: Analyzing trace with hash -443251465, now seen corresponding path program 1 times [2018-01-28 22:32:47,931 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:32:47,931 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:32:47,932 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:32:47,932 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:32:47,933 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:32:47,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:32:47,949 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:32:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-01-28 22:32:47,997 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:32:47,997 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:32:47,997 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:32:47,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:32:47,998 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:32:47,998 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 5 states. [2018-01-28 22:32:48,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:32:48,029 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-01-28 22:32:48,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 22:32:48,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-28 22:32:48,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:32:48,030 INFO L225 Difference]: With dead ends: 37 [2018-01-28 22:32:48,030 INFO L226 Difference]: Without dead ends: 36 [2018-01-28 22:32:48,031 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-28 22:32:48,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-01-28 22:32:48,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-01-28 22:32:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-01-28 22:32:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2018-01-28 22:32:48,035 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 30 [2018-01-28 22:32:48,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:32:48,035 INFO L432 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2018-01-28 22:32:48,035 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:32:48,035 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2018-01-28 22:32:48,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-28 22:32:48,036 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:32:48,036 INFO L330 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:32:48,036 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-28 22:32:48,036 INFO L82 PathProgramCache]: Analyzing trace with hash 1330965, now seen corresponding path program 1 times [2018-01-28 22:32:48,037 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:32:48,037 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:32:48,038 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:32:48,038 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:32:48,038 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:32:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:32:48,056 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:32:48,114 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-28 22:32:48,115 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:32:48,115 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-28 22:32:48,115 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-28 22:32:48,115 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-28 22:32:48,115 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-28 22:32:48,115 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 6 states. [2018-01-28 22:32:48,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:32:48,178 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2018-01-28 22:32:48,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-28 22:32:48,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-01-28 22:32:48,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:32:48,179 INFO L225 Difference]: With dead ends: 36 [2018-01-28 22:32:48,180 INFO L226 Difference]: Without dead ends: 35 [2018-01-28 22:32:48,180 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-28 22:32:48,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-28 22:32:48,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-01-28 22:32:48,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-28 22:32:48,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-01-28 22:32:48,186 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 31 [2018-01-28 22:32:48,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:32:48,187 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-01-28 22:32:48,187 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-28 22:32:48,187 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-01-28 22:32:48,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-01-28 22:32:48,188 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:32:48,189 INFO L330 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:32:48,189 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-28 22:32:48,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1330964, now seen corresponding path program 1 times [2018-01-28 22:32:48,189 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:32:48,189 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:32:48,191 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:32:48,191 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:32:48,191 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:32:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:32:48,207 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:32:48,268 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-01-28 22:32:48,269 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:32:48,269 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-28 22:32:48,269 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-28 22:32:48,269 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-28 22:32:48,269 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-28 22:32:48,270 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 6 states. [2018-01-28 22:32:48,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:32:48,297 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2018-01-28 22:32:48,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-28 22:32:48,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2018-01-28 22:32:48,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:32:48,300 INFO L225 Difference]: With dead ends: 35 [2018-01-28 22:32:48,300 INFO L226 Difference]: Without dead ends: 34 [2018-01-28 22:32:48,301 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-01-28 22:32:48,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-01-28 22:32:48,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 31. [2018-01-28 22:32:48,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-01-28 22:32:48,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2018-01-28 22:32:48,306 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 31 [2018-01-28 22:32:48,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:32:48,307 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2018-01-28 22:32:48,307 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-28 22:32:48,307 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2018-01-28 22:32:48,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-28 22:32:48,309 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:32:48,309 INFO L330 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:32:48,309 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]=== [2018-01-28 22:32:48,309 INFO L82 PathProgramCache]: Analyzing trace with hash 2120047512, now seen corresponding path program 1 times [2018-01-28 22:32:48,309 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:32:48,310 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:32:48,311 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:32:48,311 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:32:48,312 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:32:48,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-28 22:32:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-28 22:32:48,360 INFO L389 BasicCegarLoop]: Counterexample might be feasible [2018-01-28 22:32:48,375 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-28 22:32:48,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 10:32:48 BoogieIcfgContainer [2018-01-28 22:32:48,393 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-28 22:32:48,394 INFO L168 Benchmark]: Toolchain (without parser) took 1938.20 ms. Allocated memory was 302.0 MB in the beginning and 460.8 MB in the end (delta: 158.9 MB). Free memory was 261.0 MB in the beginning and 335.5 MB in the end (delta: -74.5 MB). Peak memory consumption was 84.4 MB. Max. memory is 5.3 GB. [2018-01-28 22:32:48,395 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 268.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-28 22:32:48,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 201.51 ms. Allocated memory is still 302.0 MB. Free memory was 261.0 MB in the beginning and 248.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. [2018-01-28 22:32:48,396 INFO L168 Benchmark]: Boogie Preprocessor took 37.33 ms. Allocated memory is still 302.0 MB. Free memory was 248.1 MB in the beginning and 247.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-28 22:32:48,396 INFO L168 Benchmark]: RCFGBuilder took 195.68 ms. Allocated memory is still 302.0 MB. Free memory was 247.1 MB in the beginning and 233.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 5.3 GB. [2018-01-28 22:32:48,397 INFO L168 Benchmark]: TraceAbstraction took 1497.01 ms. Allocated memory was 302.0 MB in the beginning and 460.8 MB in the end (delta: 158.9 MB). Free memory was 232.4 MB in the beginning and 335.5 MB in the end (delta: -103.1 MB). Peak memory consumption was 55.8 MB. Max. memory is 5.3 GB. [2018-01-28 22:32:48,399 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 302.0 MB. Free memory is still 268.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 201.51 ms. Allocated memory is still 302.0 MB. Free memory was 261.0 MB in the beginning and 248.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 37.33 ms. Allocated memory is still 302.0 MB. Free memory was 248.1 MB in the beginning and 247.1 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 195.68 ms. Allocated memory is still 302.0 MB. Free memory was 247.1 MB in the beginning and 233.4 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1497.01 ms. Allocated memory was 302.0 MB in the beginning and 460.8 MB in the end (delta: 158.9 MB). Free memory was 232.4 MB in the beginning and 335.5 MB in the end (delta: -103.1 MB). Peak memory consumption was 55.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1443]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1443. Possible FailurePath: [L1444] CALL entry_point() [L1435] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND TRUE __VERIFIER_nondet_int() VAL [\old(size)=4, __VERIFIER_nondet_int()=1, size=4] [L1074] EXPR, FCALL malloc(size) VAL [\old(size)=4, malloc(size)={6:0}, size=4] [L1074] RET return malloc(size); VAL [\old(size)=4, \result={6:0}, malloc(size)={6:0}, size=4] [L1435] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={6:0}] [L1435] int *p = (int *)ldv_malloc(sizeof(int)); VAL [ldv_malloc(sizeof(int))={6:0}, p={6:0}] [L1436] COND TRUE \read(*p) VAL [p={6:0}] [L1437] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND FALSE !(__VERIFIER_nondet_int()) VAL [\old(size)=4, __VERIFIER_nondet_int()=0, size=4] [L1076] RET return 0; VAL [\old(size)=4, \result={0:0}, size=4] [L1437] EXPR ldv_malloc(sizeof(int)) VAL [ldv_malloc(sizeof(int))={0:0}, p={6:0}] [L1437] int *q = (int *)ldv_malloc(sizeof(int)); VAL [ldv_malloc(sizeof(int))={0:0}, p={6:0}, q={0:0}] [L1438] FCALL free(q) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 34 locations, 3 error locations. UNSAFE Result, 1.4s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 195 SDtfs, 36 SDslu, 603 SDs, 0 SdLazy, 116 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 25 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 186 ConstructedInterpolants, 0 QuantifiedInterpolants, 8518 SizeOfPredicates, 1 NumberOfNonLiveVariables, 87 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 33/35 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-28_22-32-48-408.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-28_22-32-48-408.csv Received shutdown request...