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/mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 01:06:01,511 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 01:06:01,512 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 01:06:01,528 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 01:06:01,528 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 01:06:01,529 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 01:06:01,530 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 01:06:01,532 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 01:06:01,535 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 01:06:01,536 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 01:06:01,537 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 01:06:01,537 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 01:06:01,538 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 01:06:01,539 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 01:06:01,540 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 01:06:01,543 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 01:06:01,545 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 01:06:01,547 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 01:06:01,548 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 01:06:01,550 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 01:06:01,552 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 01:06:01,557 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 01:06:01,558 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 01:06:01,558 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf [2018-01-21 01:06:01,567 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 01:06:01,567 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 01:06:01,568 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 01:06:01,568 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 01:06:01,568 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 01:06:01,568 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-21 01:06:01,568 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 01:06:01,568 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 01:06:01,569 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 01:06:01,569 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 01:06:01,569 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 01:06:01,569 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 01:06:01,569 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 01:06:01,570 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 01:06:01,570 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 01:06:01,570 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 01:06:01,570 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 01:06:01,570 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 01:06:01,570 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 01:06:01,570 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 01:06:01,570 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 01:06:01,571 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 01:06:01,571 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 01:06:01,571 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 01:06:01,571 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 01:06:01,571 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 01:06:01,572 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 01:06:01,572 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 01:06:01,572 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 01:06:01,572 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 01:06:01,572 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 01:06:01,572 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 01:06:01,572 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 01:06:01,572 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 01:06:01,572 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 01:06:01,573 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 01:06:01,573 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 01:06:01,573 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 01:06:01,573 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 01:06:01,607 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 01:06:01,620 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 01:06:01,624 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 01:06:01,626 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 01:06:01,626 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 01:06:01,627 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-01-21 01:06:01,797 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 01:06:01,801 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 01:06:01,802 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 01:06:01,802 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 01:06:01,808 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 01:06:01,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 01:06:01" (1/1) ... [2018-01-21 01:06:01,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d3346b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:06:01, skipping insertion in model container [2018-01-21 01:06:01,812 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 01:06:01" (1/1) ... [2018-01-21 01:06:01,826 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 01:06:01,865 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 01:06:01,988 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 01:06:02,007 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 01:06:02,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:06:02 WrapperNode [2018-01-21 01:06:02,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 01:06:02,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 01:06:02,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 01:06:02,018 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 01:06:02,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:06:02" (1/1) ... [2018-01-21 01:06:02,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:06:02" (1/1) ... [2018-01-21 01:06:02,044 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:06:02" (1/1) ... [2018-01-21 01:06:02,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:06:02" (1/1) ... [2018-01-21 01:06:02,049 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:06:02" (1/1) ... [2018-01-21 01:06:02,052 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:06:02" (1/1) ... [2018-01-21 01:06:02,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:06:02" (1/1) ... [2018-01-21 01:06:02,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 01:06:02,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 01:06:02,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 01:06:02,056 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 01:06:02,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:06:02" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 01:06:02,104 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 01:06:02,104 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 01:06:02,104 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 01:06:02,104 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 01:06:02,104 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 01:06:02,104 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 01:06:02,105 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 01:06:02,105 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 01:06:02,105 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 01:06:02,105 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 01:06:02,105 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 01:06:02,105 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 01:06:02,105 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 01:06:02,105 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 01:06:02,106 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 01:06:02,106 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 01:06:02,106 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 01:06:02,418 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 01:06:02,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 01:06:02 BoogieIcfgContainer [2018-01-21 01:06:02,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 01:06:02,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 01:06:02,420 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 01:06:02,422 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 01:06:02,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 01:06:01" (1/3) ... [2018-01-21 01:06:02,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645b5bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 01:06:02, skipping insertion in model container [2018-01-21 01:06:02,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 01:06:02" (2/3) ... [2018-01-21 01:06:02,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645b5bfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 01:06:02, skipping insertion in model container [2018-01-21 01:06:02,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 01:06:02" (3/3) ... [2018-01-21 01:06:02,427 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i [2018-01-21 01:06:02,436 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 01:06:02,444 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 01:06:02,487 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 01:06:02,487 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 01:06:02,487 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 01:06:02,487 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 01:06:02,487 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 01:06:02,487 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 01:06:02,488 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 01:06:02,488 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 01:06:02,489 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 01:06:02,510 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2018-01-21 01:06:02,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 01:06:02,516 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:06:02,517 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 01:06:02,517 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 01:06:02,520 INFO L82 PathProgramCache]: Analyzing trace with hash 186463, now seen corresponding path program 1 times [2018-01-21 01:06:02,522 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:06:02,570 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:06:02,570 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:06:02,570 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:06:02,570 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:06:02,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 01:06:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 01:06:02,624 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 01:06:02,632 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 01:06:02,638 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 01:06:02,638 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 01:06:02,638 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 01:06:02,638 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 01:06:02,638 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 01:06:02,638 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 01:06:02,638 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 01:06:02,638 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 01:06:02,638 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 01:06:02,641 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2018-01-21 01:06:02,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-21 01:06:02,643 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:06:02,644 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 01:06:02,644 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 01:06:02,644 INFO L82 PathProgramCache]: Analyzing trace with hash -6326799, now seen corresponding path program 1 times [2018-01-21 01:06:02,644 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:06:02,646 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:06:02,646 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:06:02,647 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:06:02,647 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:06:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 01:06:02,677 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 01:06:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 01:06:02,720 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 01:06:02,721 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 01:06:02,721 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 01:06:02,806 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 01:06:02,820 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 01:06:02,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 01:06:02,823 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 2 states. [2018-01-21 01:06:02,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 01:06:02,843 INFO L93 Difference]: Finished difference Result 115 states and 146 transitions. [2018-01-21 01:06:02,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 01:06:02,844 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-01-21 01:06:02,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 01:06:02,852 INFO L225 Difference]: With dead ends: 115 [2018-01-21 01:06:02,852 INFO L226 Difference]: Without dead ends: 69 [2018-01-21 01:06:02,855 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 01:06:02,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-01-21 01:06:02,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2018-01-21 01:06:02,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-01-21 01:06:02,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 74 transitions. [2018-01-21 01:06:02,886 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 74 transitions. Word has length 20 [2018-01-21 01:06:02,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 01:06:02,886 INFO L432 AbstractCegarLoop]: Abstraction has 69 states and 74 transitions. [2018-01-21 01:06:02,886 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 01:06:02,886 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 74 transitions. [2018-01-21 01:06:02,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-21 01:06:02,887 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:06:02,887 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 01:06:02,887 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 01:06:02,887 INFO L82 PathProgramCache]: Analyzing trace with hash 601023546, now seen corresponding path program 1 times [2018-01-21 01:06:02,888 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:06:02,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:06:02,889 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:06:02,889 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:06:02,889 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:06:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 01:06:02,911 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 01:06:03,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 01:06:03,018 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 01:06:03,018 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 01:06:03,018 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 01:06:03,028 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 01:06:03,029 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 01:06:03,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 01:06:03,029 INFO L87 Difference]: Start difference. First operand 69 states and 74 transitions. Second operand 5 states. [2018-01-21 01:06:03,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 01:06:03,195 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2018-01-21 01:06:03,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 01:06:03,195 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-01-21 01:06:03,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 01:06:03,197 INFO L225 Difference]: With dead ends: 121 [2018-01-21 01:06:03,198 INFO L226 Difference]: Without dead ends: 102 [2018-01-21 01:06:03,199 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 01:06:03,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-01-21 01:06:03,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 73. [2018-01-21 01:06:03,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-01-21 01:06:03,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 78 transitions. [2018-01-21 01:06:03,209 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 78 transitions. Word has length 29 [2018-01-21 01:06:03,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 01:06:03,209 INFO L432 AbstractCegarLoop]: Abstraction has 73 states and 78 transitions. [2018-01-21 01:06:03,209 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 01:06:03,210 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 78 transitions. [2018-01-21 01:06:03,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-01-21 01:06:03,211 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:06:03,211 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 01:06:03,212 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 01:06:03,212 INFO L82 PathProgramCache]: Analyzing trace with hash 726720162, now seen corresponding path program 1 times [2018-01-21 01:06:03,212 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:06:03,214 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:06:03,214 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:06:03,214 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:06:03,214 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:06:03,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 01:06:03,232 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 01:06:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 01:06:03,331 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 01:06:03,331 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 01:06:03,332 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 01:06:03,332 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 01:06:03,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 01:06:03,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 01:06:03,333 INFO L87 Difference]: Start difference. First operand 73 states and 78 transitions. Second operand 6 states. [2018-01-21 01:06:03,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 01:06:03,530 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2018-01-21 01:06:03,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-21 01:06:03,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2018-01-21 01:06:03,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 01:06:03,530 INFO L225 Difference]: With dead ends: 79 [2018-01-21 01:06:03,530 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 01:06:03,531 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-01-21 01:06:03,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 01:06:03,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 01:06:03,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 01:06:03,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 01:06:03,532 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2018-01-21 01:06:03,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 01:06:03,532 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 01:06:03,532 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 01:06:03,532 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 01:06:03,532 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 01:06:03,535 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 01:06:03,535 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 01:06:03,535 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 01:06:03,535 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 01:06:03,535 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 01:06:03,535 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 01:06:03,535 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 01:06:03,535 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 01:06:03,535 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 01:06:03,537 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2018-01-21 01:06:03,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-01-21 01:06:03,537 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:06:03,538 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 01:06:03,538 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 01:06:03,538 INFO L82 PathProgramCache]: Analyzing trace with hash 1917309718, now seen corresponding path program 1 times [2018-01-21 01:06:03,538 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:06:03,539 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:06:03,539 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:06:03,539 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:06:03,539 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:06:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 01:06:03,549 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 01:06:03,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 01:06:03,563 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 01:06:03,563 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 01:06:03,563 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 01:06:03,563 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 01:06:03,564 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 01:06:03,564 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 01:06:03,564 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 2 states. [2018-01-21 01:06:03,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 01:06:03,570 INFO L93 Difference]: Finished difference Result 115 states and 146 transitions. [2018-01-21 01:06:03,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 01:06:03,570 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2018-01-21 01:06:03,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 01:06:03,571 INFO L225 Difference]: With dead ends: 115 [2018-01-21 01:06:03,571 INFO L226 Difference]: Without dead ends: 67 [2018-01-21 01:06:03,572 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 01:06:03,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-01-21 01:06:03,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2018-01-21 01:06:03,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-01-21 01:06:03,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2018-01-21 01:06:03,578 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 18 [2018-01-21 01:06:03,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 01:06:03,579 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2018-01-21 01:06:03,579 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 01:06:03,579 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2018-01-21 01:06:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 01:06:03,580 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:06:03,580 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 01:06:03,580 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 01:06:03,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1947975777, now seen corresponding path program 1 times [2018-01-21 01:06:03,581 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:06:03,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:06:03,582 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:06:03,583 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:06:03,583 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:06:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 01:06:03,598 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 01:06:03,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 01:06:03,663 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 01:06:03,663 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-21 01:06:03,663 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 01:06:03,663 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 01:06:03,664 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 01:06:03,664 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-21 01:06:03,664 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand 5 states. [2018-01-21 01:06:03,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 01:06:03,778 INFO L93 Difference]: Finished difference Result 117 states and 128 transitions. [2018-01-21 01:06:03,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 01:06:03,778 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-01-21 01:06:03,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 01:06:03,780 INFO L225 Difference]: With dead ends: 117 [2018-01-21 01:06:03,780 INFO L226 Difference]: Without dead ends: 100 [2018-01-21 01:06:03,780 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 01:06:03,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-01-21 01:06:03,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 71. [2018-01-21 01:06:03,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-21 01:06:03,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2018-01-21 01:06:03,788 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 27 [2018-01-21 01:06:03,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 01:06:03,789 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2018-01-21 01:06:03,789 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 01:06:03,789 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2018-01-21 01:06:03,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-01-21 01:06:03,791 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 01:06:03,791 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 01:06:03,791 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-21 01:06:03,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1877849095, now seen corresponding path program 1 times [2018-01-21 01:06:03,791 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 01:06:03,793 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:06:03,793 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 01:06:03,793 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 01:06:03,794 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 01:06:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 01:06:03,809 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 01:06:03,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 01:06:03,891 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 01:06:03,892 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-21 01:06:03,892 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 01:06:03,892 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 01:06:03,892 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 01:06:03,893 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-21 01:06:03,893 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand 6 states. [2018-01-21 01:06:04,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 01:06:04,023 INFO L93 Difference]: Finished difference Result 77 states and 82 transitions. [2018-01-21 01:06:04,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-01-21 01:06:04,024 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2018-01-21 01:06:04,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 01:06:04,024 INFO L225 Difference]: With dead ends: 77 [2018-01-21 01:06:04,024 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 01:06:04,025 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2018-01-21 01:06:04,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 01:06:04,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 01:06:04,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 01:06:04,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 01:06:04,026 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2018-01-21 01:06:04,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 01:06:04,026 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 01:06:04,026 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 01:06:04,027 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 01:06:04,027 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 01:06:04,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 01:06:04 BoogieIcfgContainer [2018-01-21 01:06:04,030 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 01:06:04,030 INFO L168 Benchmark]: Toolchain (without parser) took 2233.16 ms. Allocated memory was 298.3 MB in the beginning and 469.8 MB in the end (delta: 171.4 MB). Free memory was 256.5 MB in the beginning and 439.8 MB in the end (delta: -183.3 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 01:06:04,031 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 298.3 MB. Free memory is still 262.5 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 01:06:04,032 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.29 ms. Allocated memory is still 298.3 MB. Free memory was 255.5 MB in the beginning and 243.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-21 01:06:04,032 INFO L168 Benchmark]: Boogie Preprocessor took 37.87 ms. Allocated memory is still 298.3 MB. Free memory was 243.5 MB in the beginning and 241.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 01:06:04,032 INFO L168 Benchmark]: RCFGBuilder took 362.55 ms. Allocated memory is still 298.3 MB. Free memory was 241.5 MB in the beginning and 217.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 5.3 GB. [2018-01-21 01:06:04,032 INFO L168 Benchmark]: TraceAbstraction took 1610.28 ms. Allocated memory was 298.3 MB in the beginning and 469.8 MB in the end (delta: 171.4 MB). Free memory was 217.3 MB in the beginning and 439.8 MB in the end (delta: -222.4 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 01:06:04,033 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 298.3 MB. Free memory is still 262.5 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 215.29 ms. Allocated memory is still 298.3 MB. Free memory was 255.5 MB in the beginning and 243.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 37.87 ms. Allocated memory is still 298.3 MB. Free memory was 243.5 MB in the beginning and 241.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 362.55 ms. Allocated memory is still 298.3 MB. Free memory was 241.5 MB in the beginning and 217.3 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1610.28 ms. Allocated memory was 298.3 MB in the beginning and 469.8 MB in the end (delta: 171.4 MB). Free memory was 217.3 MB in the beginning and 439.8 MB in the end (delta: -222.4 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 3 procedures, 72 locations, 3 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 1]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 3 procedures, 72 locations, 3 error locations. SAFE Result, 0.8s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 176 SDtfs, 205 SDslu, 171 SDs, 0 SdLazy, 149 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 29 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 7909 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 992]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 3 procedures, 72 locations, 3 error locations. SAFE Result, 0.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 174 SDtfs, 205 SDslu, 165 SDs, 0 SdLazy, 149 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 29 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 7307 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_01-06-04-040.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_01-06-04-040.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_01-06-04-040.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-rb-cnstr_1_false-unreach-call_false-valid-deref.i_mempurity-32bit-Automizer_Taipan+AI_EQ_imprecise.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_01-06-04-040.csv Received shutdown request...