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_imprecise.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test10_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-6b94a2f [2018-01-24 17:18:05,510 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-24 17:18:05,511 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-24 17:18:05,525 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-24 17:18:05,525 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-24 17:18:05,526 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-24 17:18:05,527 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-24 17:18:05,528 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-24 17:18:05,529 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-24 17:18:05,530 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-24 17:18:05,530 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-24 17:18:05,531 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-24 17:18:05,531 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-24 17:18:05,532 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-24 17:18:05,533 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-24 17:18:05,535 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-24 17:18:05,537 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-24 17:18:05,539 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-24 17:18:05,541 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-24 17:18:05,542 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-24 17:18:05,544 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-24 17:18:05,549 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-24 17:18:05,550 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-24 17:18:05,550 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_imprecise.epf [2018-01-24 17:18:05,560 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-24 17:18:05,560 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-24 17:18:05,561 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-24 17:18:05,561 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-24 17:18:05,561 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-24 17:18:05,561 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-24 17:18:05,561 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-24 17:18:05,562 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-24 17:18:05,562 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-24 17:18:05,562 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-24 17:18:05,563 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-24 17:18:05,563 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-24 17:18:05,563 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-24 17:18:05,563 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-24 17:18:05,563 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-24 17:18:05,564 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-24 17:18:05,564 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-24 17:18:05,564 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-24 17:18:05,564 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-24 17:18:05,564 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-24 17:18:05,565 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-24 17:18:05,565 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-24 17:18:05,565 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-24 17:18:05,565 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-24 17:18:05,565 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 17:18:05,566 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-24 17:18:05,566 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-24 17:18:05,566 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-24 17:18:05,566 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-24 17:18:05,566 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-24 17:18:05,567 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-24 17:18:05,567 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-24 17:18:05,567 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-24 17:18:05,567 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-24 17:18:05,568 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-24 17:18:05,568 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-24 17:18:05,601 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-24 17:18:05,614 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-24 17:18:05,618 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-24 17:18:05,620 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-24 17:18:05,620 INFO L276 PluginConnector]: CDTParser initialized [2018-01-24 17:18:05,621 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test10_false-valid-memtrack_true-termination.i [2018-01-24 17:18:05,824 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-24 17:18:05,829 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-24 17:18:05,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-24 17:18:05,830 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-24 17:18:05,836 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-24 17:18:05,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:18:05" (1/1) ... [2018-01-24 17:18:05,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29aa47da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:05, skipping insertion in model container [2018-01-24 17:18:05,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.01 05:18:05" (1/1) ... [2018-01-24 17:18:05,853 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:18:05,900 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-24 17:18:06,012 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:18:06,032 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-24 17:18:06,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:06 WrapperNode [2018-01-24 17:18:06,042 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-24 17:18:06,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-24 17:18:06,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-24 17:18:06,043 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-24 17:18:06,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:06" (1/1) ... [2018-01-24 17:18:06,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:06" (1/1) ... [2018-01-24 17:18:06,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:06" (1/1) ... [2018-01-24 17:18:06,067 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:06" (1/1) ... [2018-01-24 17:18:06,073 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:06" (1/1) ... [2018-01-24 17:18:06,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:06" (1/1) ... [2018-01-24 17:18:06,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:06" (1/1) ... [2018-01-24 17:18:06,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-24 17:18:06,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-24 17:18:06,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-24 17:18:06,080 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-24 17:18:06,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:06" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-24 17:18:06,133 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-24 17:18:06,133 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-24 17:18:06,133 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-01-24 17:18:06,133 INFO L136 BoogieDeclarations]: Found implementation of procedure alloc_10 [2018-01-24 17:18:06,133 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-01-24 17:18:06,134 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-24 17:18:06,134 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-24 17:18:06,134 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-24 17:18:06,134 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-24 17:18:06,134 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-24 17:18:06,134 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-24 17:18:06,135 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-24 17:18:06,135 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-24 17:18:06,135 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-24 17:18:06,135 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-01-24 17:18:06,135 INFO L128 BoogieDeclarations]: Found specification of procedure alloc_10 [2018-01-24 17:18:06,135 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-01-24 17:18:06,135 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-24 17:18:06,136 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-24 17:18:06,136 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-24 17:18:06,399 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-24 17:18:06,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:18:06 BoogieIcfgContainer [2018-01-24 17:18:06,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-24 17:18:06,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-24 17:18:06,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-24 17:18:06,404 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-24 17:18:06,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.01 05:18:05" (1/3) ... [2018-01-24 17:18:06,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f55457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 05:18:06, skipping insertion in model container [2018-01-24 17:18:06,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.01 05:18:06" (2/3) ... [2018-01-24 17:18:06,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f55457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.01 05:18:06, skipping insertion in model container [2018-01-24 17:18:06,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.01 05:18:06" (3/3) ... [2018-01-24 17:18:06,409 INFO L105 eAbstractionObserver]: Analyzing ICFG memleaks_test10_false-valid-memtrack_true-termination.i [2018-01-24 17:18:06,417 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-24 17:18:06,424 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 31 error locations. [2018-01-24 17:18:06,460 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-24 17:18:06,461 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-24 17:18:06,461 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-24 17:18:06,461 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-24 17:18:06,461 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-24 17:18:06,461 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-24 17:18:06,461 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-24 17:18:06,461 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-24 17:18:06,462 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-24 17:18:06,479 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states. [2018-01-24 17:18:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-24 17:18:06,486 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:18:06,487 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:18:06,487 INFO L371 AbstractCegarLoop]: === Iteration 1 === [alloc_10Err5RequiresViolation, alloc_10Err2RequiresViolation, alloc_10Err3RequiresViolation, alloc_10Err4RequiresViolation, alloc_10Err1RequiresViolation, alloc_10Err0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr14RequiresViolation, entry_pointErr18RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr23RequiresViolation, entry_pointErr13RequiresViolation, entry_pointErr19RequiresViolation, entry_pointErr6RequiresViolation, entry_pointErr8RequiresViolation, entry_pointErr11RequiresViolation, entry_pointErr3RequiresViolation, entry_pointErr16RequiresViolation, entry_pointErr7RequiresViolation, entry_pointErr12RequiresViolation, entry_pointErr21RequiresViolation, entry_pointErr22RequiresViolation, entry_pointErr15RequiresViolation, entry_pointErr17RequiresViolation, entry_pointErr20RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr9RequiresViolation, entry_pointErr10RequiresViolation]=== [2018-01-24 17:18:06,491 INFO L82 PathProgramCache]: Analyzing trace with hash 178224559, now seen corresponding path program 1 times [2018-01-24 17:18:06,492 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:18:06,539 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:06,539 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:06,539 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:06,539 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:18:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:06,589 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:18:06,684 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 17:18:06,689 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:18:06,689 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-24 17:18:06,690 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:18:06,693 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-24 17:18:06,786 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-24 17:18:06,787 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 17:18:06,789 INFO L87 Difference]: Start difference. First operand 81 states. Second operand 3 states. [2018-01-24 17:18:07,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:18:07,013 INFO L93 Difference]: Finished difference Result 138 states and 156 transitions. [2018-01-24 17:18:07,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-24 17:18:07,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2018-01-24 17:18:07,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:18:07,025 INFO L225 Difference]: With dead ends: 138 [2018-01-24 17:18:07,025 INFO L226 Difference]: Without dead ends: 131 [2018-01-24 17:18:07,029 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-24 17:18:07,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-01-24 17:18:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 82. [2018-01-24 17:18:07,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-01-24 17:18:07,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2018-01-24 17:18:07,076 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 16 [2018-01-24 17:18:07,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:18:07,077 INFO L432 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2018-01-24 17:18:07,077 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-24 17:18:07,077 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2018-01-24 17:18:07,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-24 17:18:07,079 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:18:07,079 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:18:07,080 INFO L371 AbstractCegarLoop]: === Iteration 2 === [alloc_10Err5RequiresViolation, alloc_10Err2RequiresViolation, alloc_10Err3RequiresViolation, alloc_10Err4RequiresViolation, alloc_10Err1RequiresViolation, alloc_10Err0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr14RequiresViolation, entry_pointErr18RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr23RequiresViolation, entry_pointErr13RequiresViolation, entry_pointErr19RequiresViolation, entry_pointErr6RequiresViolation, entry_pointErr8RequiresViolation, entry_pointErr11RequiresViolation, entry_pointErr3RequiresViolation, entry_pointErr16RequiresViolation, entry_pointErr7RequiresViolation, entry_pointErr12RequiresViolation, entry_pointErr21RequiresViolation, entry_pointErr22RequiresViolation, entry_pointErr15RequiresViolation, entry_pointErr17RequiresViolation, entry_pointErr20RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr9RequiresViolation, entry_pointErr10RequiresViolation]=== [2018-01-24 17:18:07,080 INFO L82 PathProgramCache]: Analyzing trace with hash 892424113, now seen corresponding path program 1 times [2018-01-24 17:18:07,080 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:18:07,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:07,082 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:07,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:07,082 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:18:07,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:07,103 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:18:07,165 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 17:18:07,166 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-24 17:18:07,166 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-24 17:18:07,166 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:18:07,167 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-24 17:18:07,167 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-24 17:18:07,168 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-24 17:18:07,168 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 6 states. [2018-01-24 17:18:07,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:18:07,326 INFO L93 Difference]: Finished difference Result 132 states and 148 transitions. [2018-01-24 17:18:07,326 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-24 17:18:07,326 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-01-24 17:18:07,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:18:07,328 INFO L225 Difference]: With dead ends: 132 [2018-01-24 17:18:07,329 INFO L226 Difference]: Without dead ends: 128 [2018-01-24 17:18:07,330 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 17:18:07,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2018-01-24 17:18:07,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 78. [2018-01-24 17:18:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-01-24 17:18:07,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2018-01-24 17:18:07,342 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 18 [2018-01-24 17:18:07,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:18:07,343 INFO L432 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2018-01-24 17:18:07,343 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-24 17:18:07,343 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2018-01-24 17:18:07,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-24 17:18:07,344 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:18:07,344 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:18:07,345 INFO L371 AbstractCegarLoop]: === Iteration 3 === [alloc_10Err5RequiresViolation, alloc_10Err2RequiresViolation, alloc_10Err3RequiresViolation, alloc_10Err4RequiresViolation, alloc_10Err1RequiresViolation, alloc_10Err0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr14RequiresViolation, entry_pointErr18RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr23RequiresViolation, entry_pointErr13RequiresViolation, entry_pointErr19RequiresViolation, entry_pointErr6RequiresViolation, entry_pointErr8RequiresViolation, entry_pointErr11RequiresViolation, entry_pointErr3RequiresViolation, entry_pointErr16RequiresViolation, entry_pointErr7RequiresViolation, entry_pointErr12RequiresViolation, entry_pointErr21RequiresViolation, entry_pointErr22RequiresViolation, entry_pointErr15RequiresViolation, entry_pointErr17RequiresViolation, entry_pointErr20RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr9RequiresViolation, entry_pointErr10RequiresViolation]=== [2018-01-24 17:18:07,345 INFO L82 PathProgramCache]: Analyzing trace with hash 2038882856, now seen corresponding path program 1 times [2018-01-24 17:18:07,345 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:18:07,347 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:07,347 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:07,347 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:07,347 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:18:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:07,362 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:18:07,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 17:18:07,422 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:18:07,422 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 17:18:07,423 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 20 with the following transitions: [2018-01-24 17:18:07,425 INFO L201 CegarAbsIntRunner]: [16], [22], [23], [24], [25], [30], [34], [37], [93], [95], [96], [97], [99], [100], [101], [102] [2018-01-24 17:18:07,470 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 17:18:07,470 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 17:18:07,568 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-24 17:18:07,570 INFO L268 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Never found a fixpoint. Largest state had 12 variables. [2018-01-24 17:18:07,588 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-24 17:18:07,650 INFO L232 lantSequenceWeakener]: Weakened 12 states. On average, predicates are now at 66.53% of their original sizes. [2018-01-24 17:18:07,650 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-24 17:18:07,692 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-24 17:18:07,693 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-24 17:18:07,693 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-01-24 17:18:07,693 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-24 17:18:07,693 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 17:18:07,694 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 17:18:07,694 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-01-24 17:18:07,694 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 7 states. [2018-01-24 17:18:08,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:18:08,702 INFO L93 Difference]: Finished difference Result 151 states and 163 transitions. [2018-01-24 17:18:08,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 17:18:08,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2018-01-24 17:18:08,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:18:08,703 INFO L225 Difference]: With dead ends: 151 [2018-01-24 17:18:08,704 INFO L226 Difference]: Without dead ends: 80 [2018-01-24 17:18:08,704 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-24 17:18:08,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-01-24 17:18:08,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2018-01-24 17:18:08,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-01-24 17:18:08,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2018-01-24 17:18:08,711 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 19 [2018-01-24 17:18:08,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:18:08,712 INFO L432 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2018-01-24 17:18:08,712 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 17:18:08,712 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2018-01-24 17:18:08,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 17:18:08,712 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:18:08,713 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:18:08,713 INFO L371 AbstractCegarLoop]: === Iteration 4 === [alloc_10Err5RequiresViolation, alloc_10Err2RequiresViolation, alloc_10Err3RequiresViolation, alloc_10Err4RequiresViolation, alloc_10Err1RequiresViolation, alloc_10Err0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr14RequiresViolation, entry_pointErr18RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr23RequiresViolation, entry_pointErr13RequiresViolation, entry_pointErr19RequiresViolation, entry_pointErr6RequiresViolation, entry_pointErr8RequiresViolation, entry_pointErr11RequiresViolation, entry_pointErr3RequiresViolation, entry_pointErr16RequiresViolation, entry_pointErr7RequiresViolation, entry_pointErr12RequiresViolation, entry_pointErr21RequiresViolation, entry_pointErr22RequiresViolation, entry_pointErr15RequiresViolation, entry_pointErr17RequiresViolation, entry_pointErr20RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr9RequiresViolation, entry_pointErr10RequiresViolation]=== [2018-01-24 17:18:08,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1489811686, now seen corresponding path program 1 times [2018-01-24 17:18:08,713 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:18:08,714 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:08,714 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:08,715 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:08,715 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:18:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:08,729 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:18:08,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:08,774 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:18:08,774 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 17:18:08,774 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2018-01-24 17:18:08,775 INFO L201 CegarAbsIntRunner]: [16], [19], [20], [21], [22], [23], [24], [25], [30], [34], [37], [93], [95], [96], [97], [99], [100], [101], [102] [2018-01-24 17:18:08,776 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 17:18:08,776 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 17:18:08,839 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 17:18:08,839 INFO L268 AbstractInterpreter]: Visited 19 different actions 32 times. Merged at 5 different actions 7 times. Never widened. Never found a fixpoint. Largest state had 15 variables. [2018-01-24 17:18:08,842 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 17:18:08,842 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:18:08,843 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 17:18:08,849 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:08,849 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:18:08,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:08,891 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:18:08,912 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 17:18:08,914 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:08,927 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 17:18:08,927 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-01-24 17:18:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:08,936 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:18:09,055 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:09,075 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:18:09,075 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 17:18:09,079 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:09,079 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:18:09,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:09,116 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:18:09,120 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 17:18:09,120 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:09,121 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 17:18:09,121 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-01-24 17:18:09,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:09,129 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:18:09,205 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:09,206 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 17:18:09,206 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6] total 7 [2018-01-24 17:18:09,207 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 17:18:09,207 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-24 17:18:09,207 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-24 17:18:09,207 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-01-24 17:18:09,207 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand 7 states. [2018-01-24 17:18:09,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:18:09,606 INFO L93 Difference]: Finished difference Result 105 states and 112 transitions. [2018-01-24 17:18:09,607 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-24 17:18:09,607 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-01-24 17:18:09,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:18:09,608 INFO L225 Difference]: With dead ends: 105 [2018-01-24 17:18:09,608 INFO L226 Difference]: Without dead ends: 98 [2018-01-24 17:18:09,608 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 78 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-01-24 17:18:09,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-01-24 17:18:09,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 89. [2018-01-24 17:18:09,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-01-24 17:18:09,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 105 transitions. [2018-01-24 17:18:09,618 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 105 transitions. Word has length 21 [2018-01-24 17:18:09,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:18:09,619 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 105 transitions. [2018-01-24 17:18:09,619 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-24 17:18:09,619 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 105 transitions. [2018-01-24 17:18:09,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-24 17:18:09,620 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:18:09,620 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:18:09,620 INFO L371 AbstractCegarLoop]: === Iteration 5 === [alloc_10Err5RequiresViolation, alloc_10Err2RequiresViolation, alloc_10Err3RequiresViolation, alloc_10Err4RequiresViolation, alloc_10Err1RequiresViolation, alloc_10Err0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr14RequiresViolation, entry_pointErr18RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr23RequiresViolation, entry_pointErr13RequiresViolation, entry_pointErr19RequiresViolation, entry_pointErr6RequiresViolation, entry_pointErr8RequiresViolation, entry_pointErr11RequiresViolation, entry_pointErr3RequiresViolation, entry_pointErr16RequiresViolation, entry_pointErr7RequiresViolation, entry_pointErr12RequiresViolation, entry_pointErr21RequiresViolation, entry_pointErr22RequiresViolation, entry_pointErr15RequiresViolation, entry_pointErr17RequiresViolation, entry_pointErr20RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr9RequiresViolation, entry_pointErr10RequiresViolation]=== [2018-01-24 17:18:09,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1489811687, now seen corresponding path program 1 times [2018-01-24 17:18:09,621 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:18:09,622 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:09,622 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:09,622 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:09,622 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:18:09,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:09,644 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:18:09,875 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:09,875 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:18:09,875 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 17:18:09,875 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 22 with the following transitions: [2018-01-24 17:18:09,875 INFO L201 CegarAbsIntRunner]: [16], [19], [20], [21], [22], [23], [24], [25], [30], [34], [38], [93], [95], [96], [97], [99], [100], [101], [102] [2018-01-24 17:18:09,876 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 17:18:09,876 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 17:18:09,947 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 17:18:09,947 INFO L268 AbstractInterpreter]: Visited 19 different actions 32 times. Merged at 6 different actions 8 times. Never widened. Never found a fixpoint. Largest state had 15 variables. [2018-01-24 17:18:09,952 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 17:18:09,952 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:18:09,952 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 17:18:09,958 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:09,958 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:18:09,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:09,972 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:18:09,984 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 16 [2018-01-24 17:18:09,984 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:09,998 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2018-01-24 17:18:09,998 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:10,008 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 17:18:10,009 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:38, output treesize:36 [2018-01-24 17:18:10,070 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:10,070 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:18:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:10,267 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:18:10,267 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 5 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 17:18:10,270 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:10,270 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:18:10,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:10,303 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:18:10,310 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 16 [2018-01-24 17:18:10,310 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:10,379 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 19 [2018-01-24 17:18:10,380 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:10,413 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 17:18:10,414 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:38, output treesize:36 [2018-01-24 17:18:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:10,420 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:18:10,537 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:10,538 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 17:18:10,539 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7] total 18 [2018-01-24 17:18:10,539 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 17:18:10,539 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-24 17:18:10,540 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-24 17:18:10,540 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=288, Unknown=3, NotChecked=0, Total=342 [2018-01-24 17:18:10,540 INFO L87 Difference]: Start difference. First operand 89 states and 105 transitions. Second operand 13 states. [2018-01-24 17:18:10,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:18:10,927 INFO L93 Difference]: Finished difference Result 133 states and 154 transitions. [2018-01-24 17:18:10,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-24 17:18:10,927 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 21 [2018-01-24 17:18:10,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:18:10,928 INFO L225 Difference]: With dead ends: 133 [2018-01-24 17:18:10,928 INFO L226 Difference]: Without dead ends: 126 [2018-01-24 17:18:10,929 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 69 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=381, Unknown=3, NotChecked=0, Total=462 [2018-01-24 17:18:10,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2018-01-24 17:18:10,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 110. [2018-01-24 17:18:10,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-01-24 17:18:10,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 143 transitions. [2018-01-24 17:18:10,938 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 143 transitions. Word has length 21 [2018-01-24 17:18:10,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:18:10,938 INFO L432 AbstractCegarLoop]: Abstraction has 110 states and 143 transitions. [2018-01-24 17:18:10,938 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-24 17:18:10,938 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 143 transitions. [2018-01-24 17:18:10,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 17:18:10,939 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:18:10,939 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:18:10,939 INFO L371 AbstractCegarLoop]: === Iteration 6 === [alloc_10Err5RequiresViolation, alloc_10Err2RequiresViolation, alloc_10Err3RequiresViolation, alloc_10Err4RequiresViolation, alloc_10Err1RequiresViolation, alloc_10Err0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr14RequiresViolation, entry_pointErr18RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr23RequiresViolation, entry_pointErr13RequiresViolation, entry_pointErr19RequiresViolation, entry_pointErr6RequiresViolation, entry_pointErr8RequiresViolation, entry_pointErr11RequiresViolation, entry_pointErr3RequiresViolation, entry_pointErr16RequiresViolation, entry_pointErr7RequiresViolation, entry_pointErr12RequiresViolation, entry_pointErr21RequiresViolation, entry_pointErr22RequiresViolation, entry_pointErr15RequiresViolation, entry_pointErr17RequiresViolation, entry_pointErr20RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr9RequiresViolation, entry_pointErr10RequiresViolation]=== [2018-01-24 17:18:10,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1393839336, now seen corresponding path program 1 times [2018-01-24 17:18:10,940 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:18:10,941 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:10,941 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:10,941 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:10,941 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:18:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:10,955 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:18:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:11,047 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:18:11,047 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 17:18:11,047 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-01-24 17:18:11,047 INFO L201 CegarAbsIntRunner]: [16], [19], [20], [21], [23], [24], [25], [30], [34], [37], [93], [95], [96], [97], [99], [100], [101], [102] [2018-01-24 17:18:11,048 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 17:18:11,048 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 17:18:11,075 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 17:18:11,075 INFO L268 AbstractInterpreter]: Visited 18 different actions 23 times. Never merged. Never widened. Never found a fixpoint. Largest state had 15 variables. [2018-01-24 17:18:11,077 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 17:18:11,077 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:18:11,077 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 17:18:11,092 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:11,093 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:18:11,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:11,119 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:18:11,136 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 17:18:11,137 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:11,146 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 17:18:11,146 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-01-24 17:18:11,192 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 17:18:11,195 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 17:18:11,197 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-01-24 17:18:11,197 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:11,202 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-24 17:18:11,203 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:17, output treesize:15 [2018-01-24 17:18:11,217 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:11,217 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:18:11,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:11,409 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:18:11,409 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 7 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 17:18:11,412 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:11,413 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:18:11,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:11,449 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:18:11,452 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-01-24 17:18:11,453 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:11,454 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 17:18:11,454 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-01-24 17:18:11,464 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#t~malloc1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |ldv_malloc_#t~malloc1.base| 1))) is different from true [2018-01-24 17:18:11,469 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-01-24 17:18:11,469 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:11,472 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-24 17:18:11,472 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2018-01-24 17:18:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2018-01-24 17:18:11,477 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:18:11,552 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:11,554 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 17:18:11,554 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 7, 6] total 18 [2018-01-24 17:18:11,554 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 17:18:11,554 INFO L409 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-01-24 17:18:11,554 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-01-24 17:18:11,554 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=252, Unknown=3, NotChecked=32, Total=342 [2018-01-24 17:18:11,555 INFO L87 Difference]: Start difference. First operand 110 states and 143 transitions. Second operand 11 states. [2018-01-24 17:18:11,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:18:11,966 INFO L93 Difference]: Finished difference Result 128 states and 149 transitions. [2018-01-24 17:18:11,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-24 17:18:11,966 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2018-01-24 17:18:11,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:18:11,968 INFO L225 Difference]: With dead ends: 128 [2018-01-24 17:18:11,968 INFO L226 Difference]: Without dead ends: 125 [2018-01-24 17:18:11,969 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 71 SyntacticMatches, 11 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=367, Unknown=3, NotChecked=40, Total=506 [2018-01-24 17:18:11,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-01-24 17:18:11,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 103. [2018-01-24 17:18:11,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-01-24 17:18:11,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 132 transitions. [2018-01-24 17:18:11,982 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 132 transitions. Word has length 23 [2018-01-24 17:18:11,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:18:11,982 INFO L432 AbstractCegarLoop]: Abstraction has 103 states and 132 transitions. [2018-01-24 17:18:11,982 INFO L433 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-01-24 17:18:11,982 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 132 transitions. [2018-01-24 17:18:11,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-24 17:18:11,983 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:18:11,983 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:18:11,983 INFO L371 AbstractCegarLoop]: === Iteration 7 === [alloc_10Err5RequiresViolation, alloc_10Err2RequiresViolation, alloc_10Err3RequiresViolation, alloc_10Err4RequiresViolation, alloc_10Err1RequiresViolation, alloc_10Err0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr14RequiresViolation, entry_pointErr18RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr23RequiresViolation, entry_pointErr13RequiresViolation, entry_pointErr19RequiresViolation, entry_pointErr6RequiresViolation, entry_pointErr8RequiresViolation, entry_pointErr11RequiresViolation, entry_pointErr3RequiresViolation, entry_pointErr16RequiresViolation, entry_pointErr7RequiresViolation, entry_pointErr12RequiresViolation, entry_pointErr21RequiresViolation, entry_pointErr22RequiresViolation, entry_pointErr15RequiresViolation, entry_pointErr17RequiresViolation, entry_pointErr20RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr9RequiresViolation, entry_pointErr10RequiresViolation]=== [2018-01-24 17:18:11,983 INFO L82 PathProgramCache]: Analyzing trace with hash 1393839337, now seen corresponding path program 1 times [2018-01-24 17:18:11,984 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:18:11,985 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:11,985 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:11,985 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:11,985 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:18:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:12,000 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:18:12,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:12,245 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:18:12,245 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 17:18:12,245 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 24 with the following transitions: [2018-01-24 17:18:12,245 INFO L201 CegarAbsIntRunner]: [16], [19], [20], [21], [23], [24], [25], [30], [34], [38], [93], [95], [96], [97], [99], [100], [101], [102] [2018-01-24 17:18:12,246 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 17:18:12,247 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 17:18:12,280 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 17:18:12,280 INFO L268 AbstractInterpreter]: Visited 18 different actions 23 times. Never merged. Never widened. Never found a fixpoint. Largest state had 15 variables. [2018-01-24 17:18:12,291 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 17:18:12,291 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:18:12,291 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 17:18:12,302 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:12,303 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:18:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:12,316 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:18:12,328 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2018-01-24 17:18:12,329 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:12,343 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2018-01-24 17:18:12,343 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:12,356 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2018-01-24 17:18:12,357 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:12,358 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2018-01-24 17:18:12,358 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:12,370 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 17:18:12,370 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:50, output treesize:46 [2018-01-24 17:18:12,504 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 17:18:12,505 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-01-24 17:18:12,505 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:12,513 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 17:18:12,514 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 17:18:12,515 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-01-24 17:18:12,515 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:12,520 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-01-24 17:18:12,521 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:18 [2018-01-24 17:18:12,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:12,543 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:18:12,633 WARN L130 XnfTransformerHelper]: expecting exponential blowup for input size 27 [2018-01-24 17:18:13,603 WARN L146 SmtUtils]: Spent 913ms on a formula simplification. DAG size of input: 65 DAG size of output 25 [2018-01-24 17:18:13,617 WARN L130 XnfTransformerHelper]: expecting exponential blowup for input size 24 [2018-01-24 17:18:13,912 WARN L146 SmtUtils]: Spent 212ms on a formula simplification. DAG size of input: 63 DAG size of output 61 [2018-01-24 17:18:13,919 WARN L130 XnfTransformerHelper]: expecting exponential blowup for input size 20 [2018-01-24 17:18:13,928 WARN L130 XnfTransformerHelper]: expecting exponential blowup for input size 20 [2018-01-24 17:18:14,325 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-01-24 17:18:14,325 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:14,372 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2018-01-24 17:18:14,373 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:14,383 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 21 [2018-01-24 17:18:14,396 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 5 [2018-01-24 17:18:14,396 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:14,399 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 17:18:14,407 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 17:18:14,407 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:68, output treesize:21 [2018-01-24 17:18:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:14,468 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:18:14,468 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 9 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-01-24 17:18:14,475 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:14,475 INFO L280 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:18:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:14,508 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:18:14,512 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25 [2018-01-24 17:18:14,512 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:14,514 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2018-01-24 17:18:14,514 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:14,528 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2018-01-24 17:18:14,528 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:14,543 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2018-01-24 17:18:14,543 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:14,556 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 17:18:14,556 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:50, output treesize:46 [2018-01-24 17:18:14,635 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 17:18:14,635 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 17:18:14,636 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 47 [2018-01-24 17:18:14,636 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:14,670 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 17:18:14,671 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 17:18:14,671 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 27 [2018-01-24 17:18:14,671 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:14,691 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 17:18:14,692 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 35 [2018-01-24 17:18:14,693 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:14,711 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 17:18:14,712 INFO L700 Elim1Store]: detected not equals via solver [2018-01-24 17:18:14,712 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 25 [2018-01-24 17:18:14,712 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:14,726 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: 4 dim-0 vars, and 2 xjuncts. [2018-01-24 17:18:14,727 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:67, output treesize:49 [2018-01-24 17:18:14,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:14,779 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:18:15,772 WARN L146 SmtUtils]: Spent 921ms on a formula simplification. DAG size of input: 43 DAG size of output 29 [2018-01-24 17:18:15,780 WARN L130 XnfTransformerHelper]: expecting exponential blowup for input size 27 [2018-01-24 17:18:18,159 WARN L146 SmtUtils]: Spent 2093ms on a formula simplification. DAG size of input: 72 DAG size of output 26 [2018-01-24 17:18:18,167 WARN L130 XnfTransformerHelper]: expecting exponential blowup for input size 25 [2018-01-24 17:18:23,278 WARN L146 SmtUtils]: Spent 2056ms on a formula simplification. DAG size of input: 65 DAG size of output 37 [2018-01-24 17:18:23,598 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2018-01-24 17:18:23,599 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:23,613 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 28 [2018-01-24 17:18:23,613 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:23,627 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 31 [2018-01-24 17:18:23,644 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 5 [2018-01-24 17:18:23,644 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-01-24 17:18:23,649 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-01-24 17:18:23,662 INFO L267 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 3 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-01-24 17:18:23,662 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 10 variables, input treesize:82, output treesize:21 [2018-01-24 17:18:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-24 17:18:23,670 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-01-24 17:18:23,670 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 9, 9] total 35 [2018-01-24 17:18:23,670 INFO L247 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-01-24 17:18:23,671 INFO L409 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-01-24 17:18:23,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-01-24 17:18:23,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1129, Unknown=3, NotChecked=0, Total=1260 [2018-01-24 17:18:23,671 INFO L87 Difference]: Start difference. First operand 103 states and 132 transitions. Second operand 19 states. [2018-01-24 17:18:27,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-24 17:18:27,117 INFO L93 Difference]: Finished difference Result 147 states and 165 transitions. [2018-01-24 17:18:27,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-01-24 17:18:27,117 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 23 [2018-01-24 17:18:27,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-24 17:18:27,119 INFO L225 Difference]: With dead ends: 147 [2018-01-24 17:18:27,119 INFO L226 Difference]: Without dead ends: 140 [2018-01-24 17:18:27,121 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 464 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=206, Invalid=1596, Unknown=4, NotChecked=0, Total=1806 [2018-01-24 17:18:27,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-24 17:18:27,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 70. [2018-01-24 17:18:27,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-01-24 17:18:27,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2018-01-24 17:18:27,152 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 23 [2018-01-24 17:18:27,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-24 17:18:27,152 INFO L432 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2018-01-24 17:18:27,152 INFO L433 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-01-24 17:18:27,152 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2018-01-24 17:18:27,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-24 17:18:27,153 INFO L314 BasicCegarLoop]: Found error trace [2018-01-24 17:18:27,153 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-24 17:18:27,153 INFO L371 AbstractCegarLoop]: === Iteration 8 === [alloc_10Err5RequiresViolation, alloc_10Err2RequiresViolation, alloc_10Err3RequiresViolation, alloc_10Err4RequiresViolation, alloc_10Err1RequiresViolation, alloc_10Err0RequiresViolation, mainErr0EnsuresViolation, entry_pointErr5RequiresViolation, entry_pointErr14RequiresViolation, entry_pointErr18RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr23RequiresViolation, entry_pointErr13RequiresViolation, entry_pointErr19RequiresViolation, entry_pointErr6RequiresViolation, entry_pointErr8RequiresViolation, entry_pointErr11RequiresViolation, entry_pointErr3RequiresViolation, entry_pointErr16RequiresViolation, entry_pointErr7RequiresViolation, entry_pointErr12RequiresViolation, entry_pointErr21RequiresViolation, entry_pointErr22RequiresViolation, entry_pointErr15RequiresViolation, entry_pointErr17RequiresViolation, entry_pointErr20RequiresViolation, entry_pointErr4RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr9RequiresViolation, entry_pointErr10RequiresViolation]=== [2018-01-24 17:18:27,154 INFO L82 PathProgramCache]: Analyzing trace with hash -2074519941, now seen corresponding path program 1 times [2018-01-24 17:18:27,154 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-24 17:18:27,155 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:27,155 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:27,155 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-24 17:18:27,155 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-24 17:18:27,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:27,168 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-24 17:18:27,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 17:18:27,319 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:18:27,319 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-24 17:18:27,319 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 29 with the following transitions: [2018-01-24 17:18:27,319 INFO L201 CegarAbsIntRunner]: [15], [16], [19], [20], [21], [22], [23], [24], [25], [30], [34], [36], [39], [40], [45], [87], [90], [93], [94], [95], [96], [97], [99], [100], [101], [102] [2018-01-24 17:18:27,320 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-24 17:18:27,321 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-24 17:18:27,408 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-24 17:18:27,409 INFO L268 AbstractInterpreter]: Visited 26 different actions 42 times. Merged at 8 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 20 variables. [2018-01-24 17:18:27,411 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-24 17:18:27,411 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-24 17:18:27,411 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-24 17:18:27,423 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-24 17:18:27,424 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-24 17:18:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-24 17:18:27,446 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-24 17:18:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-24 17:18:27,566 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-24 17:18:27,765 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_old(#valid)_BEFORE_CALL_16| term size 19 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:270) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:445) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:421) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:328) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:237) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:185) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:213) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:117) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-01-24 17:18:27,768 INFO L168 Benchmark]: Toolchain (without parser) took 21942.88 ms. Allocated memory was 299.9 MB in the beginning and 563.6 MB in the end (delta: 263.7 MB). Free memory was 258.9 MB in the beginning and 430.8 MB in the end (delta: -171.8 MB). Peak memory consumption was 91.9 MB. Max. memory is 5.3 GB. [2018-01-24 17:18:27,769 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 299.9 MB. Free memory is still 264.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-24 17:18:27,769 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.69 ms. Allocated memory is still 299.9 MB. Free memory was 258.9 MB in the beginning and 244.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. [2018-01-24 17:18:27,769 INFO L168 Benchmark]: Boogie Preprocessor took 36.20 ms. Allocated memory is still 299.9 MB. Free memory was 244.9 MB in the beginning and 242.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-24 17:18:27,770 INFO L168 Benchmark]: RCFGBuilder took 320.69 ms. Allocated memory is still 299.9 MB. Free memory was 242.9 MB in the beginning and 220.3 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 5.3 GB. [2018-01-24 17:18:27,770 INFO L168 Benchmark]: TraceAbstraction took 21365.48 ms. Allocated memory was 299.9 MB in the beginning and 563.6 MB in the end (delta: 263.7 MB). Free memory was 220.3 MB in the beginning and 430.8 MB in the end (delta: -210.4 MB). Peak memory consumption was 53.3 MB. Max. memory is 5.3 GB. [2018-01-24 17:18:27,772 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 299.9 MB. Free memory is still 264.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 212.69 ms. Allocated memory is still 299.9 MB. Free memory was 258.9 MB in the beginning and 244.9 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.20 ms. Allocated memory is still 299.9 MB. Free memory was 244.9 MB in the beginning and 242.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 320.69 ms. Allocated memory is still 299.9 MB. Free memory was 242.9 MB in the beginning and 220.3 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 21365.48 ms. Allocated memory was 299.9 MB in the beginning and 563.6 MB in the end (delta: 263.7 MB). Free memory was 220.3 MB in the beginning and 430.8 MB in the end (delta: -210.4 MB). Peak memory consumption was 53.3 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 12 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 57 LocStat_NO_SUPPORTING_DISEQUALITIES : 0 LocStat_NO_DISJUNCTIONS : -24 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 21 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 24 TransStat_NO_SUPPORTING_DISEQUALITIES : 2 TransStat_NO_DISJUNCTIONS : 22 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.690224 RENAME_VARIABLES(MILLISECONDS) : 0.140866 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.228456 PROJECTAWAY(MILLISECONDS) : 0.032777 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.016134 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.180262 ADD_EQUALITY(MILLISECONDS) : 0.045426 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.018912 #CONJOIN_DISJUNCTIVE : 20 #RENAME_VARIABLES : 41 #UNFREEZE : 0 #CONJOIN : 42 #PROJECTAWAY : 42 #ADD_WEAK_EQUALITY : 1 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 40 #ADD_EQUALITY : 24 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 2 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 17 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 76 LocStat_NO_SUPPORTING_DISEQUALITIES : 11 LocStat_NO_DISJUNCTIONS : -34 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 27 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 39 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 28 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.278777 RENAME_VARIABLES(MILLISECONDS) : 0.080162 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.252011 PROJECTAWAY(MILLISECONDS) : 0.062574 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.000901 DISJOIN(MILLISECONDS) : 0.403032 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.103855 ADD_EQUALITY(MILLISECONDS) : 0.018965 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.036743 #CONJOIN_DISJUNCTIVE : 55 #RENAME_VARIABLES : 112 #UNFREEZE : 0 #CONJOIN : 104 #PROJECTAWAY : 92 #ADD_WEAK_EQUALITY : 3 #DISJOIN : 13 #RENAME_VARIABLES_DISJUNCTIVE : 109 #ADD_EQUALITY : 39 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 5 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 17 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 75 LocStat_NO_SUPPORTING_DISEQUALITIES : 9 LocStat_NO_DISJUNCTIONS : -34 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 27 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 41 TransStat_NO_SUPPORTING_DISEQUALITIES : 5 TransStat_NO_DISJUNCTIONS : 29 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.331175 RENAME_VARIABLES(MILLISECONDS) : 0.086408 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.144548 PROJECTAWAY(MILLISECONDS) : 0.042642 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001213 DISJOIN(MILLISECONDS) : 0.365256 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.105874 ADD_EQUALITY(MILLISECONDS) : 0.022590 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.011385 #CONJOIN_DISJUNCTIVE : 55 #RENAME_VARIABLES : 115 #UNFREEZE : 0 #CONJOIN : 107 #PROJECTAWAY : 98 #ADD_WEAK_EQUALITY : 3 #DISJOIN : 16 #RENAME_VARIABLES_DISJUNCTIVE : 109 #ADD_EQUALITY : 41 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 4 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 17 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 89 LocStat_NO_SUPPORTING_DISEQUALITIES : 16 LocStat_NO_DISJUNCTIONS : -34 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 26 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 36 TransStat_NO_SUPPORTING_DISEQUALITIES : 6 TransStat_NO_DISJUNCTIONS : 27 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.117055 RENAME_VARIABLES(MILLISECONDS) : 0.039637 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.097787 PROJECTAWAY(MILLISECONDS) : 0.020910 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001429 DISJOIN(MILLISECONDS) : 0.149135 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.051947 ADD_EQUALITY(MILLISECONDS) : 0.030902 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.017188 #CONJOIN_DISJUNCTIVE : 38 #RENAME_VARIABLES : 66 #UNFREEZE : 0 #CONJOIN : 68 #PROJECTAWAY : 63 #ADD_WEAK_EQUALITY : 3 #DISJOIN : 6 #RENAME_VARIABLES_DISJUNCTIVE : 65 #ADD_EQUALITY : 36 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 5 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 17 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 89 LocStat_NO_SUPPORTING_DISEQUALITIES : 15 LocStat_NO_DISJUNCTIONS : -34 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 26 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 38 TransStat_NO_SUPPORTING_DISEQUALITIES : 5 TransStat_NO_DISJUNCTIONS : 28 TransStat_MAX_NO_DISJUNCTIONS : 2 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.295369 RENAME_VARIABLES(MILLISECONDS) : 0.069557 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.114278 PROJECTAWAY(MILLISECONDS) : 0.037826 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001221 DISJOIN(MILLISECONDS) : 0.227875 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.089854 ADD_EQUALITY(MILLISECONDS) : 0.019181 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.009480 #CONJOIN_DISJUNCTIVE : 38 #RENAME_VARIABLES : 67 #UNFREEZE : 0 #CONJOIN : 69 #PROJECTAWAY : 65 #ADD_WEAK_EQUALITY : 3 #DISJOIN : 7 #RENAME_VARIABLES_DISJUNCTIVE : 65 #ADD_EQUALITY : 38 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 4 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 24 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 116 LocStat_NO_SUPPORTING_DISEQUALITIES : 17 LocStat_NO_DISJUNCTIONS : -48 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 34 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 69 TransStat_NO_SUPPORTING_DISEQUALITIES : 8 TransStat_NO_DISJUNCTIONS : 38 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.109952 RENAME_VARIABLES(MILLISECONDS) : 0.030202 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.078746 PROJECTAWAY(MILLISECONDS) : 0.022648 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001736 DISJOIN(MILLISECONDS) : 0.312845 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.048082 ADD_EQUALITY(MILLISECONDS) : 0.025615 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.017120 #CONJOIN_DISJUNCTIVE : 72 #RENAME_VARIABLES : 144 #UNFREEZE : 0 #CONJOIN : 167 #PROJECTAWAY : 120 #ADD_WEAK_EQUALITY : 8 #DISJOIN : 16 #RENAME_VARIABLES_DISJUNCTIVE : 138 #ADD_EQUALITY : 63 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 6 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_old(#valid)_BEFORE_CALL_16| term size 19 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_old(#valid)_BEFORE_CALL_16| term size 19: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test10_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-24_17-18-27-786.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test10_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-0-2018-01-24_17-18-27-786.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test10_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-0-2018-01-24_17-18-27-786.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test10_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-1-2018-01-24_17-18-27-786.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test10_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-1-2018-01-24_17-18-27-786.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test10_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-2-2018-01-24_17-18-27-786.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test10_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-2-2018-01-24_17-18-27-786.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test10_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-3-2018-01-24_17-18-27-786.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test10_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-3-2018-01-24_17-18-27-786.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test10_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-4-2018-01-24_17-18-27-786.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test10_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-4-2018-01-24_17-18-27-786.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test10_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-VPDomainBenchmark-5-2018-01-24_17-18-27-786.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test10_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-BenchmarkWithCounters-5-2018-01-24_17-18-27-786.csv Received shutdown request...