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_Taipan+AI_EQ.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test9_1_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 15:58:53,383 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 15:58:53,385 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 15:58:53,400 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 15:58:53,401 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 15:58:53,402 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 15:58:53,403 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 15:58:53,404 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 15:58:53,406 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 15:58:53,407 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 15:58:53,408 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 15:58:53,408 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 15:58:53,409 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 15:58:53,410 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 15:58:53,411 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 15:58:53,414 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 15:58:53,416 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 15:58:53,418 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 15:58:53,420 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 15:58:53,421 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 15:58:53,423 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-24 15:58:53,424 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-24 15:58:53,424 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-24 15:58:53,425 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-24 15:58:53,426 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-24 15:58:53,427 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-24 15:58:53,427 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-24 15:58:53,428 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-24 15:58:53,428 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-24 15:58:53,428 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 15:58:53,429 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 15:58:53,429 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf [2018-01-24 15:58:53,438 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 15:58:53,439 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 15:58:53,439 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 15:58:53,440 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 15:58:53,440 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 15:58:53,440 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 15:58:53,440 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 15:58:53,440 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 15:58:53,441 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 15:58:53,441 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 15:58:53,441 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 15:58:53,441 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 15:58:53,441 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 15:58:53,441 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 15:58:53,442 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 15:58:53,442 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 15:58:53,442 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 15:58:53,442 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 15:58:53,442 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 15:58:53,442 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 15:58:53,442 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 15:58:53,443 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 15:58:53,443 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 15:58:53,443 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 15:58:53,443 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 15:58:53,443 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 15:58:53,444 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 15:58:53,444 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 15:58:53,444 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 15:58:53,444 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 15:58:53,444 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 15:58:53,444 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 15:58:53,444 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 15:58:53,445 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 15:58:53,445 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 15:58:53,479 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 15:58:53,490 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 15:58:53,494 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 15:58:53,495 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 15:58:53,496 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 15:58:53,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test9_1_false-valid-memtrack_true-termination.i [2018-01-24 15:58:53,669 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 15:58:53,673 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 15:58:53,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 15:58:53,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 15:58:53,679 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 15:58:53,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 03:58:53" (1/1) ... [2018-01-24 15:58:53,683 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc1eb44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:53, skipping insertion in model container [2018-01-24 15:58:53,683 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 03:58:53" (1/1) ... [2018-01-24 15:58:53,696 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 15:58:53,743 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 15:58:53,855 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 15:58:53,867 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 15:58:53,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:53 WrapperNode [2018-01-24 15:58:53,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 15:58:53,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 15:58:53,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 15:58:53,875 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 15:58:53,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:53" (1/1) ... [2018-01-24 15:58:53,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:53" (1/1) ... [2018-01-24 15:58:53,903 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:53" (1/1) ... [2018-01-24 15:58:53,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:53" (1/1) ... [2018-01-24 15:58:53,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:53" (1/1) ... [2018-01-24 15:58:53,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:53" (1/1) ... [2018-01-24 15:58:53,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:53" (1/1) ... [2018-01-24 15:58:53,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 15:58:53,912 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 15:58:53,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 15:58:53,913 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 15:58:53,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:53" (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 [2018-01-24 15:58:53,965 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 15:58:53,966 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 15:58:53,966 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-24 15:58:53,966 INFO L136 BoogieDeclarations]: Found implementation of procedure probe_9_2 [2018-01-24 15:58:53,966 INFO L136 BoogieDeclarations]: Found implementation of procedure disconnect_9 [2018-01-24 15:58:53,966 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-24 15:58:53,966 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 15:58:53,967 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 15:58:53,967 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 15:58:53,967 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 15:58:53,967 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 15:58:53,967 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 15:58:53,967 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 15:58:53,967 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-24 15:58:53,968 INFO L128 BoogieDeclarations]: Found specification of procedure probe_9_2 [2018-01-24 15:58:53,968 INFO L128 BoogieDeclarations]: Found specification of procedure disconnect_9 [2018-01-24 15:58:53,968 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-24 15:58:53,968 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 15:58:53,968 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 15:58:53,968 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 15:58:54,142 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 15:58:54,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 03:58:54 BoogieIcfgContainer [2018-01-24 15:58:54,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 15:58:54,143 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 15:58:54,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 15:58:54,145 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 15:58:54,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 03:58:53" (1/3) ... [2018-01-24 15:58:54,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d1e4a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 03:58:54, skipping insertion in model container [2018-01-24 15:58:54,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 03:58:53" (2/3) ... [2018-01-24 15:58:54,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d1e4a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 03:58:54, skipping insertion in model container [2018-01-24 15:58:54,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 03:58:54" (3/3) ... [2018-01-24 15:58:54,148 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test9_1_false-valid-memtrack_true-termination.i [2018-01-24 15:58:54,154 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 15:58:54,160 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-24 15:58:54,209 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 15:58:54,209 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 15:58:54,209 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 15:58:54,210 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 15:58:54,210 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 15:58:54,210 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 15:58:54,210 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 15:58:54,210 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 15:58:54,211 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 15:58:54,231 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2018-01-24 15:58:54,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 15:58:54,237 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:58:54,238 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:58:54,238 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-01-24 15:58:54,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1164483743, now seen corresponding path program 1 times [2018-01-24 15:58:54,247 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:58:54,303 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:54,303 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:58:54,303 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:54,303 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:58:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:58:54,362 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:58:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:58:54,465 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:58:54,465 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 15:58:54,465 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:58:54,467 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 15:58:54,477 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 15:58:54,478 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 15:58:54,480 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2018-01-24 15:58:54,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:58:54,630 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2018-01-24 15:58:54,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 15:58:54,632 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-01-24 15:58:54,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:58:54,640 INFO L225 Difference]: With dead ends: 47 [2018-01-24 15:58:54,640 INFO L226 Difference]: Without dead ends: 43 [2018-01-24 15:58:54,643 INFO L525 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 [2018-01-24 15:58:54,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-01-24 15:58:54,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2018-01-24 15:58:54,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-01-24 15:58:54,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2018-01-24 15:58:54,673 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 19 [2018-01-24 15:58:54,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:58:54,673 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2018-01-24 15:58:54,674 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 15:58:54,674 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2018-01-24 15:58:54,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 15:58:54,674 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:58:54,674 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:58:54,674 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-01-24 15:58:54,675 INFO L82 PathProgramCache]: Analyzing trace with hash -1164483744, now seen corresponding path program 1 times [2018-01-24 15:58:54,675 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:58:54,677 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:54,677 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:58:54,677 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:54,678 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:58:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:58:54,698 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:58:54,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:58:54,763 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:58:54,763 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-24 15:58:54,763 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:58:54,765 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 15:58:54,765 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 15:58:54,765 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 15:58:54,766 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 5 states. [2018-01-24 15:58:54,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:58:54,838 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2018-01-24 15:58:54,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 15:58:54,838 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-01-24 15:58:54,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:58:54,842 INFO L225 Difference]: With dead ends: 43 [2018-01-24 15:58:54,842 INFO L226 Difference]: Without dead ends: 42 [2018-01-24 15:58:54,843 INFO L525 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 [2018-01-24 15:58:54,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-01-24 15:58:54,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-01-24 15:58:54,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-01-24 15:58:54,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2018-01-24 15:58:54,852 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 19 [2018-01-24 15:58:54,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:58:54,853 INFO L432 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2018-01-24 15:58:54,853 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 15:58:54,853 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2018-01-24 15:58:54,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 15:58:54,854 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:58:54,854 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:58:54,854 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-01-24 15:58:54,855 INFO L82 PathProgramCache]: Analyzing trace with hash 78678979, now seen corresponding path program 1 times [2018-01-24 15:58:54,855 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:58:54,856 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:54,856 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:58:54,856 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:54,857 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:58:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:58:54,880 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:58:54,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:58:54,944 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:58:54,944 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 15:58:54,944 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:58:54,944 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 15:58:54,945 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 15:58:54,945 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 15:58:54,945 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 6 states. [2018-01-24 15:58:55,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:58:55,022 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2018-01-24 15:58:55,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 15:58:55,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-01-24 15:58:55,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:58:55,024 INFO L225 Difference]: With dead ends: 42 [2018-01-24 15:58:55,024 INFO L226 Difference]: Without dead ends: 41 [2018-01-24 15:58:55,025 INFO L525 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 [2018-01-24 15:58:55,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-01-24 15:58:55,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2018-01-24 15:58:55,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-01-24 15:58:55,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2018-01-24 15:58:55,033 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 21 [2018-01-24 15:58:55,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:58:55,033 INFO L432 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2018-01-24 15:58:55,033 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 15:58:55,033 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2018-01-24 15:58:55,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 15:58:55,034 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:58:55,035 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:58:55,035 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-01-24 15:58:55,035 INFO L82 PathProgramCache]: Analyzing trace with hash 78678978, now seen corresponding path program 1 times [2018-01-24 15:58:55,035 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:58:55,036 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:55,037 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:58:55,037 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:55,037 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:58:55,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:58:55,054 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:58:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:58:55,104 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:58:55,105 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 15:58:55,105 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:58:55,105 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 15:58:55,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 15:58:55,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 15:58:55,105 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 6 states. [2018-01-24 15:58:55,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:58:55,152 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2018-01-24 15:58:55,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 15:58:55,153 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-01-24 15:58:55,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:58:55,154 INFO L225 Difference]: With dead ends: 40 [2018-01-24 15:58:55,154 INFO L226 Difference]: Without dead ends: 39 [2018-01-24 15:58:55,154 INFO L525 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 [2018-01-24 15:58:55,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-01-24 15:58:55,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2018-01-24 15:58:55,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-01-24 15:58:55,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2018-01-24 15:58:55,158 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 21 [2018-01-24 15:58:55,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:58:55,159 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2018-01-24 15:58:55,159 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 15:58:55,159 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2018-01-24 15:58:55,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 15:58:55,160 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:58:55,160 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 15:58:55,160 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-01-24 15:58:55,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1919879344, now seen corresponding path program 1 times [2018-01-24 15:58:55,161 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:58:55,162 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:55,162 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:58:55,162 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:55,163 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:58:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 15:58:55,175 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 15:58:55,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 15:58:55,205 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 15:58:55,205 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 15:58:55,205 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 15:58:55,205 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 15:58:55,205 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 15:58:55,206 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 15:58:55,206 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 3 states. [2018-01-24 15:58:55,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 15:58:55,245 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2018-01-24 15:58:55,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 15:58:55,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-01-24 15:58:55,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 15:58:55,247 INFO L225 Difference]: With dead ends: 41 [2018-01-24 15:58:55,247 INFO L226 Difference]: Without dead ends: 36 [2018-01-24 15:58:55,247 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 15:58:55,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-01-24 15:58:55,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2018-01-24 15:58:55,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-24 15:58:55,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2018-01-24 15:58:55,259 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 21 [2018-01-24 15:58:55,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 15:58:55,260 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2018-01-24 15:58:55,260 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 15:58:55,260 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2018-01-24 15:58:55,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 15:58:55,261 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 15:58:55,261 INFO L322 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] [2018-01-24 15:58:55,261 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, disconnect_9Err1RequiresViolation, disconnect_9Err0RequiresViolation]=== [2018-01-24 15:58:55,262 INFO L82 PathProgramCache]: Analyzing trace with hash -1696620398, now seen corresponding path program 1 times [2018-01-24 15:58:55,262 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 15:58:55,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:55,263 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 15:58:55,263 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 15:58:55,263 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 15:58:55,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 15:58:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 15:58:55,319 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 15:58:55,334 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 15:58:55,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 03:58:55 BoogieIcfgContainer [2018-01-24 15:58:55,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 15:58:55,350 INFO L168 Benchmark]: Toolchain (without parser) took 1680.36 ms. Allocated memory was 298.3 MB in the beginning and 453.0 MB in the end (delta: 154.7 MB). Free memory was 257.2 MB in the beginning and 358.2 MB in the end (delta: -100.9 MB). Peak memory consumption was 53.8 MB. Max. memory is 5.3 GB. [2018-01-24 15:58:55,351 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 298.3 MB. Free memory is still 263.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 15:58:55,351 INFO L168 Benchmark]: CACSL2BoogieTranslator took 200.42 ms. Allocated memory is still 298.3 MB. Free memory was 257.2 MB in the beginning and 243.2 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 5.3 GB. [2018-01-24 15:58:55,351 INFO L168 Benchmark]: Boogie Preprocessor took 37.63 ms. Allocated memory is still 298.3 MB. Free memory is still 243.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 15:58:55,352 INFO L168 Benchmark]: RCFGBuilder took 230.16 ms. Allocated memory is still 298.3 MB. Free memory was 243.2 MB in the beginning and 228.2 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 5.3 GB. [2018-01-24 15:58:55,352 INFO L168 Benchmark]: TraceAbstraction took 1206.14 ms. Allocated memory was 298.3 MB in the beginning and 453.0 MB in the end (delta: 154.7 MB). Free memory was 228.2 MB in the beginning and 358.2 MB in the end (delta: -129.9 MB). Peak memory consumption was 24.7 MB. Max. memory is 5.3 GB. [2018-01-24 15:58:55,353 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 298.3 MB. Free memory is still 263.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 200.42 ms. Allocated memory is still 298.3 MB. Free memory was 257.2 MB in the beginning and 243.2 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 37.63 ms. Allocated memory is still 298.3 MB. Free memory is still 243.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 230.16 ms. Allocated memory is still 298.3 MB. Free memory was 243.2 MB in the beginning and 228.2 MB in the end (delta: 15.0 MB). Peak memory consumption was 15.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1206.14 ms. Allocated memory was 298.3 MB in the beginning and 453.0 MB in the end (delta: 154.7 MB). Free memory was 228.2 MB in the beginning and 358.2 MB in the end (delta: -129.9 MB). Peak memory consumption was 24.7 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: 1456]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1456. Possible FailurePath: [L1434] int *a9; VAL [\old(a9)=0, \old(a9)=0, a9={0:0}] [L1457] CALL entry_point() VAL [\old(a9)=0, \old(a9)=0, a9={0:0}] [L1448] CALL, EXPR probe_9_2() VAL [\old(a9)=0, \old(a9)=0, a9={0:0}] [L1437] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(a9)=0, \old(a9)=0, \old(size)=4, a9={0:0}] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(a9)=0, \old(a9)=0, \old(size)=4, a9={0:0}, malloc(size)={7:0}, size=4] [L1074] RET return malloc(size); VAL [\old(a9)=0, \old(a9)=0, \old(size)=4, \result={7:0}, a9={0:0}, malloc(size)={7:0}, size=4] [L1437] EXPR ldv_malloc(sizeof(int)) VAL [\old(a9)=0, \old(a9)=0, a9={0:0}, ldv_malloc(sizeof(int))={7:0}] [L1437] a9 = (int *)ldv_malloc(sizeof(int)) [L1440] RET return - -3; VAL [\old(a9)=0, \old(a9)=0, \result=3, a9={7:0}] [L1448] EXPR probe_9_2() VAL [\old(a9)=0, \old(a9)=0, a9={7:0}, probe_9_2()=3] [L1448] int ret = probe_9_2(); [L1450] COND FALSE !(ret==0) VAL [\old(a9)=0, \old(a9)=0, a9={7:0}, ret=3] [L1453] RET a9 = 0 VAL [\old(a9)=0, \old(a9)=0, a9={0:0}, ret=3] [L1457] entry_point() VAL [\old(a9)=0, \old(a9)=0, a9={0:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 33 locations, 3 error locations. UNSAFE Result, 1.1s OverallTime, 6 OverallIterations, 1 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 154 SDtfs, 74 SDslu, 346 SDs, 0 SdLazy, 85 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 4336 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: 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_test9_1_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_15-58-55-360.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test9_1_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_15-58-55-360.csv Received shutdown request...