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_mostprecise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test6_3_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 20:43:02,348 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 20:43:02,351 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 20:43:02,367 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 20:43:02,367 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 20:43:02,368 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 20:43:02,369 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 20:43:02,371 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 20:43:02,374 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 20:43:02,375 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 20:43:02,376 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 20:43:02,377 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 20:43:02,378 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 20:43:02,379 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 20:43:02,380 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 20:43:02,387 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 20:43:02,389 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 20:43:02,392 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 20:43:02,394 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 20:43:02,395 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 20:43:02,400 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 20:43:02,406 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 20:43:02,407 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 20:43:02,407 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_mostprecise.epf [2018-01-24 20:43:02,417 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 20:43:02,417 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 20:43:02,418 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 20:43:02,418 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 20:43:02,419 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 20:43:02,419 INFO L133 SettingsManager]: * Weq Fattening=true [2018-01-24 20:43:02,419 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 20:43:02,419 INFO L133 SettingsManager]: * Precise comparison operator=true [2018-01-24 20:43:02,419 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 20:43:02,420 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 20:43:02,420 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 20:43:02,420 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 20:43:02,420 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 20:43:02,420 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 20:43:02,420 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 20:43:02,421 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 20:43:02,421 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 20:43:02,421 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 20:43:02,421 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 20:43:02,421 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 20:43:02,421 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 20:43:02,421 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 20:43:02,422 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 20:43:02,422 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 20:43:02,422 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 20:43:02,422 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 20:43:02,423 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 20:43:02,423 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 20:43:02,423 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 20:43:02,423 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 20:43:02,423 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 20:43:02,423 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 20:43:02,423 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 20:43:02,423 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 20:43:02,424 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 20:43:02,424 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 20:43:02,424 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 20:43:02,460 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 20:43:02,471 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 20:43:02,475 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 20:43:02,476 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 20:43:02,477 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 20:43:02,477 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test6_3_false-valid-memtrack_true-termination.i [2018-01-24 20:43:02,674 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 20:43:02,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 20:43:02,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 20:43:02,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 20:43:02,695 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 20:43:02,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:43:02" (1/1) ... [2018-01-24 20:43:02,700 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@388a8c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:43:02, skipping insertion in model container [2018-01-24 20:43:02,701 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 08:43:02" (1/1) ... [2018-01-24 20:43:02,721 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:43:02,790 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 20:43:02,911 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:43:02,928 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 20:43:02,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:43:02 WrapperNode [2018-01-24 20:43:02,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 20:43:02,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 20:43:02,937 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 20:43:02,938 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 20:43:02,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:43:02" (1/1) ... [2018-01-24 20:43:02,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:43:02" (1/1) ... [2018-01-24 20:43:02,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:43:02" (1/1) ... [2018-01-24 20:43:02,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:43:02" (1/1) ... [2018-01-24 20:43:02,968 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:43:02" (1/1) ... [2018-01-24 20:43:02,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:43:02" (1/1) ... [2018-01-24 20:43:02,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:43:02" (1/1) ... [2018-01-24 20:43:02,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 20:43:02,972 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 20:43:02,972 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 20:43:02,972 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 20:43:02,973 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:43:02" (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 20:43:03,027 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 20:43:03,028 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 20:43:03,028 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-24 20:43:03,028 INFO L136 BoogieDeclarations]: Found implementation of procedure f6 [2018-01-24 20:43:03,028 INFO L136 BoogieDeclarations]: Found implementation of procedure g6 [2018-01-24 20:43:03,028 INFO L136 BoogieDeclarations]: Found implementation of procedure probe1_6 [2018-01-24 20:43:03,029 INFO L136 BoogieDeclarations]: Found implementation of procedure disconnect_2_6 [2018-01-24 20:43:03,029 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-24 20:43:03,029 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 20:43:03,029 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 20:43:03,029 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 20:43:03,029 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 20:43:03,030 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 20:43:03,030 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 20:43:03,030 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 20:43:03,030 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 20:43:03,030 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 20:43:03,030 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-24 20:43:03,031 INFO L128 BoogieDeclarations]: Found specification of procedure f6 [2018-01-24 20:43:03,031 INFO L128 BoogieDeclarations]: Found specification of procedure g6 [2018-01-24 20:43:03,031 INFO L128 BoogieDeclarations]: Found specification of procedure probe1_6 [2018-01-24 20:43:03,031 INFO L128 BoogieDeclarations]: Found specification of procedure disconnect_2_6 [2018-01-24 20:43:03,031 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-24 20:43:03,032 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 20:43:03,032 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 20:43:03,032 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 20:43:03,238 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 20:43:03,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:43:03 BoogieIcfgContainer [2018-01-24 20:43:03,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 20:43:03,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 20:43:03,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 20:43:03,242 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 20:43:03,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 08:43:02" (1/3) ... [2018-01-24 20:43:03,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219df8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:43:03, skipping insertion in model container [2018-01-24 20:43:03,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 08:43:02" (2/3) ... [2018-01-24 20:43:03,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@219df8a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 08:43:03, skipping insertion in model container [2018-01-24 20:43:03,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 08:43:03" (3/3) ... [2018-01-24 20:43:03,245 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test6_3_false-valid-memtrack_true-termination.i [2018-01-24 20:43:03,253 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 20:43:03,259 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2018-01-24 20:43:03,303 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 20:43:03,303 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 20:43:03,304 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 20:43:03,304 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 20:43:03,304 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 20:43:03,304 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 20:43:03,304 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 20:43:03,304 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 20:43:03,305 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 20:43:03,330 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2018-01-24 20:43:03,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-24 20:43:03,335 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:43:03,336 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-24 20:43:03,336 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 20:43:03,342 INFO L82 PathProgramCache]: Analyzing trace with hash 3053611, now seen corresponding path program 1 times [2018-01-24 20:43:03,344 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:43:03,396 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:03,396 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:43:03,397 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:03,397 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:43:03,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:43:03,443 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:43:03,488 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 20:43:03,490 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:43:03,490 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:43:03,490 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:43:03,492 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:43:03,503 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:43:03,504 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:43:03,506 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 3 states. [2018-01-24 20:43:03,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:43:03,675 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2018-01-24 20:43:03,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:43:03,677 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-24 20:43:03,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:43:03,686 INFO L225 Difference]: With dead ends: 70 [2018-01-24 20:43:03,687 INFO L226 Difference]: Without dead ends: 65 [2018-01-24 20:43:03,690 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 20:43:03,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-24 20:43:03,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2018-01-24 20:43:03,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-01-24 20:43:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2018-01-24 20:43:03,728 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 4 [2018-01-24 20:43:03,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:43:03,729 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2018-01-24 20:43:03,729 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:43:03,729 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2018-01-24 20:43:03,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-01-24 20:43:03,730 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:43:03,730 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-01-24 20:43:03,730 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 20:43:03,730 INFO L82 PathProgramCache]: Analyzing trace with hash 3053612, now seen corresponding path program 1 times [2018-01-24 20:43:03,730 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:43:03,732 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:03,732 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:43:03,732 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:03,732 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:43:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:43:03,749 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:43:03,813 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 20:43:03,813 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:43:03,813 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:43:03,813 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:43:03,815 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:43:03,815 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:43:03,815 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:43:03,816 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand 3 states. [2018-01-24 20:43:03,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:43:03,900 INFO L93 Difference]: Finished difference Result 112 states and 123 transitions. [2018-01-24 20:43:03,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:43:03,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-01-24 20:43:03,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:43:03,903 INFO L225 Difference]: With dead ends: 112 [2018-01-24 20:43:03,903 INFO L226 Difference]: Without dead ends: 110 [2018-01-24 20:43:03,904 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 20:43:03,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-01-24 20:43:03,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 101. [2018-01-24 20:43:03,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-01-24 20:43:03,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 117 transitions. [2018-01-24 20:43:03,923 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 117 transitions. Word has length 4 [2018-01-24 20:43:03,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:43:03,923 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 117 transitions. [2018-01-24 20:43:03,923 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:43:03,924 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 117 transitions. [2018-01-24 20:43:03,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-24 20:43:03,925 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:43:03,925 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, 1] [2018-01-24 20:43:03,925 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 20:43:03,925 INFO L82 PathProgramCache]: Analyzing trace with hash 1645066521, now seen corresponding path program 1 times [2018-01-24 20:43:03,926 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:43:03,927 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:03,927 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:43:03,927 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:03,927 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:43:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:43:03,950 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:43:04,031 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 20:43:04,032 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:43:04,032 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:43:04,032 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:43:04,033 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:43:04,033 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:43:04,033 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:43:04,033 INFO L87 Difference]: Start difference. First operand 101 states and 117 transitions. Second operand 5 states. [2018-01-24 20:43:04,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:43:04,059 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2018-01-24 20:43:04,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:43:04,059 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-01-24 20:43:04,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:43:04,063 INFO L225 Difference]: With dead ends: 121 [2018-01-24 20:43:04,063 INFO L226 Difference]: Without dead ends: 78 [2018-01-24 20:43:04,064 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:43:04,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-01-24 20:43:04,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2018-01-24 20:43:04,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-01-24 20:43:04,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2018-01-24 20:43:04,076 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 24 [2018-01-24 20:43:04,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:43:04,076 INFO L432 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2018-01-24 20:43:04,076 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:43:04,077 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2018-01-24 20:43:04,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-24 20:43:04,078 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:43:04,078 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, 1] [2018-01-24 20:43:04,078 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 20:43:04,078 INFO L82 PathProgramCache]: Analyzing trace with hash 995391925, now seen corresponding path program 1 times [2018-01-24 20:43:04,079 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:43:04,080 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:04,080 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:43:04,080 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:04,081 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:43:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:43:04,105 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:43:04,172 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 20:43:04,172 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:43:04,173 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 20:43:04,173 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:43:04,173 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:43:04,173 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:43:04,174 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:43:04,174 INFO L87 Difference]: Start difference. First operand 76 states and 83 transitions. Second operand 6 states. [2018-01-24 20:43:04,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:43:04,232 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2018-01-24 20:43:04,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:43:04,232 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-01-24 20:43:04,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:43:04,233 INFO L225 Difference]: With dead ends: 90 [2018-01-24 20:43:04,233 INFO L226 Difference]: Without dead ends: 76 [2018-01-24 20:43:04,234 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 20:43:04,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-01-24 20:43:04,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-01-24 20:43:04,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-01-24 20:43:04,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2018-01-24 20:43:04,243 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 24 [2018-01-24 20:43:04,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:43:04,244 INFO L432 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2018-01-24 20:43:04,244 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:43:04,244 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2018-01-24 20:43:04,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 20:43:04,245 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:43:04,245 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, 1, 1, 1] [2018-01-24 20:43:04,245 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 20:43:04,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1433763835, now seen corresponding path program 1 times [2018-01-24 20:43:04,245 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:43:04,246 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:04,246 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:43:04,247 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:04,247 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:43:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:43:04,263 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:43:04,325 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 20:43:04,325 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:43:04,325 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:43:04,325 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:43:04,325 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:43:04,326 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:43:04,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:43:04,326 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 6 states. [2018-01-24 20:43:04,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:43:04,435 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2018-01-24 20:43:04,435 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 20:43:04,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-01-24 20:43:04,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:43:04,437 INFO L225 Difference]: With dead ends: 76 [2018-01-24 20:43:04,437 INFO L226 Difference]: Without dead ends: 75 [2018-01-24 20:43:04,437 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 20:43:04,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-01-24 20:43:04,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-01-24 20:43:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-01-24 20:43:04,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2018-01-24 20:43:04,448 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 26 [2018-01-24 20:43:04,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:43:04,448 INFO L432 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2018-01-24 20:43:04,448 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:43:04,448 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2018-01-24 20:43:04,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-24 20:43:04,449 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:43:04,449 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, 1, 1, 1] [2018-01-24 20:43:04,450 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 20:43:04,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1433763836, now seen corresponding path program 1 times [2018-01-24 20:43:04,450 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:43:04,451 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:04,451 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:43:04,452 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:04,452 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:43:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:43:04,470 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:43:04,522 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 20:43:04,523 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:43:04,523 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:43:04,523 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:43:04,523 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 20:43:04,524 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 20:43:04,524 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 20:43:04,524 INFO L87 Difference]: Start difference. First operand 75 states and 81 transitions. Second operand 6 states. [2018-01-24 20:43:04,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:43:04,632 INFO L93 Difference]: Finished difference Result 75 states and 81 transitions. [2018-01-24 20:43:04,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 20:43:04,633 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2018-01-24 20:43:04,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:43:04,634 INFO L225 Difference]: With dead ends: 75 [2018-01-24 20:43:04,634 INFO L226 Difference]: Without dead ends: 74 [2018-01-24 20:43:04,635 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 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 20:43:04,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-01-24 20:43:04,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-01-24 20:43:04,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-01-24 20:43:04,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2018-01-24 20:43:04,646 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 26 [2018-01-24 20:43:04,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:43:04,647 INFO L432 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2018-01-24 20:43:04,647 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 20:43:04,647 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2018-01-24 20:43:04,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-24 20:43:04,648 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:43:04,649 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, 1, 1] [2018-01-24 20:43:04,649 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 20:43:04,649 INFO L82 PathProgramCache]: Analyzing trace with hash -772946127, now seen corresponding path program 1 times [2018-01-24 20:43:04,649 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:43:04,650 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:04,651 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:43:04,651 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:04,651 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:43:04,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:43:04,668 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:43:04,701 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 20:43:04,702 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:43:04,702 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 20:43:04,702 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:43:04,702 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 20:43:04,703 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 20:43:04,703 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 20:43:04,703 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 3 states. [2018-01-24 20:43:04,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:43:04,778 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2018-01-24 20:43:04,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 20:43:04,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2018-01-24 20:43:04,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:43:04,784 INFO L225 Difference]: With dead ends: 78 [2018-01-24 20:43:04,784 INFO L226 Difference]: Without dead ends: 61 [2018-01-24 20:43:04,784 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 20:43:04,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-01-24 20:43:04,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2018-01-24 20:43:04,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-01-24 20:43:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2018-01-24 20:43:04,807 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 25 [2018-01-24 20:43:04,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:43:04,807 INFO L432 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2018-01-24 20:43:04,807 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 20:43:04,808 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2018-01-24 20:43:04,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 20:43:04,809 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:43:04,810 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:43:04,810 INFO L371 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 20:43:04,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1279706416, now seen corresponding path program 1 times [2018-01-24 20:43:04,810 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:43:04,812 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:04,812 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:43:04,812 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:04,812 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:43:04,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:43:04,862 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:43:05,073 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 20:43:05,093 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:43:05,093 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 20:43:05,094 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:43:05,094 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 20:43:05,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 20:43:05,095 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:43:05,095 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 8 states. [2018-01-24 20:43:05,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:43:05,714 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2018-01-24 20:43:05,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 20:43:05,715 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-01-24 20:43:05,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:43:05,716 INFO L225 Difference]: With dead ends: 66 [2018-01-24 20:43:05,716 INFO L226 Difference]: Without dead ends: 65 [2018-01-24 20:43:05,717 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2018-01-24 20:43:05,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-24 20:43:05,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2018-01-24 20:43:05,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-01-24 20:43:05,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2018-01-24 20:43:05,729 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 32 [2018-01-24 20:43:05,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:43:05,730 INFO L432 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2018-01-24 20:43:05,730 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 20:43:05,731 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2018-01-24 20:43:05,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 20:43:05,732 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:43:05,732 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:43:05,732 INFO L371 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 20:43:05,732 INFO L82 PathProgramCache]: Analyzing trace with hash 1279706417, now seen corresponding path program 1 times [2018-01-24 20:43:05,733 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:43:05,734 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:05,735 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:43:05,735 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:05,735 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:43:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:43:05,763 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:43:05,982 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 20:43:05,982 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:43:05,982 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-01-24 20:43:05,983 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:43:05,983 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-24 20:43:05,983 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-24 20:43:05,983 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-01-24 20:43:05,984 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 10 states. [2018-01-24 20:43:06,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:43:06,325 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2018-01-24 20:43:06,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 20:43:06,325 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2018-01-24 20:43:06,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:43:06,326 INFO L225 Difference]: With dead ends: 60 [2018-01-24 20:43:06,327 INFO L226 Difference]: Without dead ends: 58 [2018-01-24 20:43:06,327 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2018-01-24 20:43:06,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-01-24 20:43:06,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2018-01-24 20:43:06,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2018-01-24 20:43:06,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 61 transitions. [2018-01-24 20:43:06,338 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 61 transitions. Word has length 32 [2018-01-24 20:43:06,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:43:06,338 INFO L432 AbstractCegarLoop]: Abstraction has 58 states and 61 transitions. [2018-01-24 20:43:06,338 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-24 20:43:06,338 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 61 transitions. [2018-01-24 20:43:06,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-24 20:43:06,340 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:43:06,340 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:43:06,340 INFO L371 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 20:43:06,340 INFO L82 PathProgramCache]: Analyzing trace with hash 2490893, now seen corresponding path program 1 times [2018-01-24 20:43:06,341 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:43:06,342 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:06,342 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:43:06,342 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:06,342 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:43:06,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:43:06,356 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:43:06,826 WARN L146 SmtUtils]: Spent 133ms on a formula simplification. DAG size of input: 19 DAG size of output 16 [2018-01-24 20:43:06,980 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 20:43:06,980 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:43:06,980 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-24 20:43:06,980 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:43:06,980 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-24 20:43:06,981 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-24 20:43:06,981 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-01-24 20:43:06,981 INFO L87 Difference]: Start difference. First operand 58 states and 61 transitions. Second operand 8 states. [2018-01-24 20:43:07,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:43:07,239 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2018-01-24 20:43:07,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 20:43:07,239 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-01-24 20:43:07,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:43:07,240 INFO L225 Difference]: With dead ends: 62 [2018-01-24 20:43:07,240 INFO L226 Difference]: Without dead ends: 46 [2018-01-24 20:43:07,240 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2018-01-24 20:43:07,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-01-24 20:43:07,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-01-24 20:43:07,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-01-24 20:43:07,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-01-24 20:43:07,247 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 32 [2018-01-24 20:43:07,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:43:07,247 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-01-24 20:43:07,247 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-24 20:43:07,247 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-01-24 20:43:07,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-24 20:43:07,248 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:43:07,248 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 20:43:07,248 INFO L371 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 20:43:07,248 INFO L82 PathProgramCache]: Analyzing trace with hash 2029507581, now seen corresponding path program 1 times [2018-01-24 20:43:07,248 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:43:07,249 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:07,250 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:43:07,250 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:07,250 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:43:07,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 20:43:07,264 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 20:43:07,298 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 20:43:07,299 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 20:43:07,299 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-24 20:43:07,299 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 20:43:07,299 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-24 20:43:07,299 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-24 20:43:07,299 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:43:07,299 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 5 states. [2018-01-24 20:43:07,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 20:43:07,311 INFO L93 Difference]: Finished difference Result 51 states and 50 transitions. [2018-01-24 20:43:07,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-24 20:43:07,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2018-01-24 20:43:07,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 20:43:07,313 INFO L225 Difference]: With dead ends: 51 [2018-01-24 20:43:07,313 INFO L226 Difference]: Without dead ends: 46 [2018-01-24 20:43:07,313 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-24 20:43:07,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-01-24 20:43:07,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-01-24 20:43:07,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-01-24 20:43:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 45 transitions. [2018-01-24 20:43:07,321 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 45 transitions. Word has length 41 [2018-01-24 20:43:07,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 20:43:07,321 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 45 transitions. [2018-01-24 20:43:07,321 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-24 20:43:07,322 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 45 transitions. [2018-01-24 20:43:07,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-01-24 20:43:07,323 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 20:43:07,323 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, 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 20:43:07,323 INFO L371 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-01-24 20:43:07,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1307871834, now seen corresponding path program 1 times [2018-01-24 20:43:07,324 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 20:43:07,325 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:07,325 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 20:43:07,325 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 20:43:07,325 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 20:43:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 20:43:07,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-24 20:43:07,391 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-24 20:43:07,412 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-24 20:43:07,417 WARN L1215 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 5 could not be translated for associated CType STRUCT#?p~$Pointer$# [2018-01-24 20:43:07,418 WARN L1215 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT#?p~$Pointer$# [2018-01-24 20:43:07,419 WARN L1215 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 5 could not be translated for associated CType STRUCT#?p~$Pointer$# [2018-01-24 20:43:07,419 WARN L1215 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT#?p~$Pointer$# [2018-01-24 20:43:07,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.01 08:43:07 BoogieIcfgContainer [2018-01-24 20:43:07,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-24 20:43:07,434 INFO L168 Benchmark]: Toolchain (without parser) took 4760.03 ms. Allocated memory was 310.9 MB in the beginning and 526.9 MB in the end (delta: 216.0 MB). Free memory was 268.2 MB in the beginning and 399.5 MB in the end (delta: -131.3 MB). Peak memory consumption was 84.7 MB. Max. memory is 5.3 GB. [2018-01-24 20:43:07,435 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 310.9 MB. Free memory is still 275.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 20:43:07,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.95 ms. Allocated memory is still 310.9 MB. Free memory was 268.2 MB in the beginning and 254.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 5.3 GB. [2018-01-24 20:43:07,436 INFO L168 Benchmark]: Boogie Preprocessor took 34.76 ms. Allocated memory is still 310.9 MB. Free memory was 254.8 MB in the beginning and 252.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 20:43:07,436 INFO L168 Benchmark]: RCFGBuilder took 266.10 ms. Allocated memory is still 310.9 MB. Free memory was 252.8 MB in the beginning and 234.2 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. [2018-01-24 20:43:07,436 INFO L168 Benchmark]: TraceAbstraction took 4194.79 ms. Allocated memory was 310.9 MB in the beginning and 526.9 MB in the end (delta: 216.0 MB). Free memory was 234.2 MB in the beginning and 399.5 MB in the end (delta: -165.3 MB). Peak memory consumption was 50.7 MB. Max. memory is 5.3 GB. [2018-01-24 20:43:07,438 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 310.9 MB. Free memory is still 275.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 250.95 ms. Allocated memory is still 310.9 MB. Free memory was 268.2 MB in the beginning and 254.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 34.76 ms. Allocated memory is still 310.9 MB. Free memory was 254.8 MB in the beginning and 252.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 266.10 ms. Allocated memory is still 310.9 MB. Free memory was 252.8 MB in the beginning and 234.2 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 4194.79 ms. Allocated memory was 310.9 MB in the beginning and 526.9 MB in the end (delta: 216.0 MB). Free memory was 234.2 MB in the beginning and 399.5 MB in the end (delta: -165.3 MB). Peak memory consumption was 50.7 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 5 could not be translated for associated CType STRUCT#?p~$Pointer$# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT#?p~$Pointer$# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 5 could not be translated for associated CType STRUCT#?p~$Pointer$# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT#?p~$Pointer$# * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1476]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1476. Possible FailurePath: IVAL [\old(a6)=null, \old(a6)=null, a6={9:5}] [L1465] FCALL struct A a6; VAL [a6={7:0}] [L1477] CALL entry_point() VAL [a6={7:0}] [L1469] CALL, EXPR probe1_6(&a6) VAL [a={7:0}, a6={7:0}] [L1443] int ret = - -3; VAL [a={7:0}, a={7:0}, a6={7:0}, ret=3] [L1444] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, a6={7:0}] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(size)=4, a6={7:0}, malloc(size)={8:0}, size=4] [L1074] RET return malloc(size); VAL [\old(size)=4, \result={8:0}, a6={7:0}, malloc(size)={8:0}, size=4] [L1444] EXPR ldv_malloc(sizeof(int)) VAL [a={7:0}, a={7:0}, a6={7:0}, ldv_malloc(sizeof(int))={8:0}, ret=3] [L1444] int *p = (int *)ldv_malloc(sizeof(int)); [L1445] COND FALSE !(p==0) VAL [a={7:0}, a={7:0}, a6={7:0}, p={8:0}, ret=3] [L1447] CALL, EXPR f6() VAL [a6={7:0}] [L1435] RET return __VERIFIER_nondet_int(); [L1447] EXPR f6() VAL [a={7:0}, a={7:0}, a6={7:0}, f6()=0, p={8:0}, ret=3] [L1447] ret = f6() [L1448] COND FALSE !(ret<0) VAL [a={7:0}, a={7:0}, a6={7:0}, p={8:0}, ret=0] [L1450] CALL, EXPR g6() VAL [a6={7:0}] [L1439] RET return __VERIFIER_nondet_int(); [L1450] EXPR g6() VAL [a={7:0}, a={7:0}, a6={7:0}, g6()=0, p={8:0}, ret=0] [L1450] ret = g6() [L1451] COND FALSE !(ret<0) VAL [a={7:0}, a={7:0}, a6={7:0}, p={8:0}, ret=0] [L1453] FCALL a->p = p VAL [a={7:0}, a={7:0}, a6={7:0}, p={8:0}, ret=0] [L1454] RET return 0; VAL [\result=0, a={7:0}, a={7:0}, a6={7:0}, p={8:0}, ret=0] [L1469] EXPR probe1_6(&a6) VAL [a6={7:0}, probe1_6(&a6)=0] [L1469] int ret = probe1_6(&a6); [L1470] COND TRUE ret==0 VAL [a6={7:0}, ret=0] [L1471] FCALL disconnect_2_6(&a6) VAL [a6={7:0}, ret=0] [L1473] RET, FCALL a6.p = 0 VAL [a6={7:0}, ret=0] [L1477] entry_point() VAL [a6={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 59 locations, 9 error locations. UNSAFE Result, 4.1s OverallTime, 12 OverallIterations, 1 TraceHistogramMax, 1.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 545 SDtfs, 391 SDslu, 1189 SDs, 0 SdLazy, 717 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 17 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 315 NumberOfCodeBlocks, 315 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 259 ConstructedInterpolants, 0 QuantifiedInterpolants, 33451 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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_test6_3_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_20-43-07-447.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test6_3_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_mostprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-24_20-43-07-447.csv Received shutdown request...