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.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-circular_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 00:11:57,058 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 00:11:57,060 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 00:11:57,074 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 00:11:57,075 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 00:11:57,076 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 00:11:57,077 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 00:11:57,078 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 00:11:57,081 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 00:11:57,081 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 00:11:57,082 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 00:11:57,082 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 00:11:57,083 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 00:11:57,083 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 00:11:57,084 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 00:11:57,086 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 00:11:57,089 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 00:11:57,091 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 00:11:57,092 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 00:11:57,093 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 00:11:57,095 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 00:11:57,100 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 00:11:57,101 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 00:11:57,101 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.epf [2018-01-21 00:11:57,111 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 00:11:57,112 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 00:11:57,112 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 00:11:57,113 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 00:11:57,113 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 00:11:57,113 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 00:11:57,113 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 00:11:57,114 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 00:11:57,114 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 00:11:57,114 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 00:11:57,114 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 00:11:57,115 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 00:11:57,115 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 00:11:57,115 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 00:11:57,115 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 00:11:57,115 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 00:11:57,116 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 00:11:57,116 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 00:11:57,116 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 00:11:57,116 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 00:11:57,116 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 00:11:57,117 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 00:11:57,117 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 00:11:57,117 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 00:11:57,117 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 00:11:57,117 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:11:57,118 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 00:11:57,118 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 00:11:57,118 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 00:11:57,118 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 00:11:57,118 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 00:11:57,119 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 00:11:57,119 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 00:11:57,119 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 00:11:57,119 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 00:11:57,119 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 00:11:57,120 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 00:11:57,120 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 00:11:57,155 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 00:11:57,167 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 00:11:57,172 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 00:11:57,173 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 00:11:57,174 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 00:11:57,174 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular_true-unreach-call_true-valid-memsafety.i [2018-01-21 00:11:57,343 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 00:11:57,346 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 00:11:57,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 00:11:57,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 00:11:57,352 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 00:11:57,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:11:57" (1/1) ... [2018-01-21 00:11:57,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eeba7ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:11:57, skipping insertion in model container [2018-01-21 00:11:57,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:11:57" (1/1) ... [2018-01-21 00:11:57,370 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:11:57,410 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:11:57,531 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:11:57,549 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:11:57,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:11:57 WrapperNode [2018-01-21 00:11:57,558 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 00:11:57,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 00:11:57,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 00:11:57,559 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 00:11:57,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:11:57" (1/1) ... [2018-01-21 00:11:57,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:11:57" (1/1) ... [2018-01-21 00:11:57,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:11:57" (1/1) ... [2018-01-21 00:11:57,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:11:57" (1/1) ... [2018-01-21 00:11:57,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:11:57" (1/1) ... [2018-01-21 00:11:57,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:11:57" (1/1) ... [2018-01-21 00:11:57,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:11:57" (1/1) ... [2018-01-21 00:11:57,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 00:11:57,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 00:11:57,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 00:11:57,601 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 00:11:57,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:11:57" (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 00:11:57,651 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 00:11:57,651 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 00:11:57,651 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 00:11:57,651 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 00:11:57,652 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 00:11:57,652 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 00:11:57,652 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 00:11:57,652 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 00:11:57,652 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 00:11:57,653 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 00:11:57,653 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 00:11:57,653 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 00:11:57,653 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 00:11:57,653 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 00:11:57,653 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 00:11:57,654 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 00:11:57,654 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 00:11:57,919 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 00:11:57,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:11:57 BoogieIcfgContainer [2018-01-21 00:11:57,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 00:11:57,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 00:11:57,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 00:11:57,923 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 00:11:57,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 12:11:57" (1/3) ... [2018-01-21 00:11:57,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce05999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:11:57, skipping insertion in model container [2018-01-21 00:11:57,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:11:57" (2/3) ... [2018-01-21 00:11:57,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ce05999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:11:57, skipping insertion in model container [2018-01-21 00:11:57,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:11:57" (3/3) ... [2018-01-21 00:11:57,926 INFO L105 eAbstractionObserver]: Analyzing ICFG sll-circular_true-unreach-call_true-valid-memsafety.i [2018-01-21 00:11:57,932 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 00:11:57,938 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 00:11:57,975 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:11:57,975 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:11:57,976 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:11:57,976 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:11:57,976 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:11:57,976 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:11:57,976 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:11:57,976 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 00:11:57,977 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:11:57,999 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-01-21 00:11:58,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 00:11:58,005 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:11:58,006 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 00:11:58,006 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 00:11:58,009 INFO L82 PathProgramCache]: Analyzing trace with hash 186463, now seen corresponding path program 1 times [2018-01-21 00:11:58,011 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:11:58,051 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:11:58,051 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:11:58,051 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:11:58,051 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:11:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:11:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:11:58,102 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:11:58,109 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:11:58,115 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:11:58,116 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:11:58,116 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:11:58,116 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:11:58,116 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:11:58,116 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:11:58,117 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:11:58,117 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 00:11:58,117 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:11:58,120 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-01-21 00:11:58,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-01-21 00:11:58,122 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:11:58,123 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:11:58,123 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:11:58,123 INFO L82 PathProgramCache]: Analyzing trace with hash 128587636, now seen corresponding path program 1 times [2018-01-21 00:11:58,123 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:11:58,125 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:11:58,125 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:11:58,125 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:11:58,125 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:11:58,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:11:58,161 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:11:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:11:58,206 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:11:58,206 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:11:58,206 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:11:58,208 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:11:58,306 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:11:58,306 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:11:58,309 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 2 states. [2018-01-21 00:11:58,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:11:58,331 INFO L93 Difference]: Finished difference Result 119 states and 155 transitions. [2018-01-21 00:11:58,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:11:58,332 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-01-21 00:11:58,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:11:58,344 INFO L225 Difference]: With dead ends: 119 [2018-01-21 00:11:58,344 INFO L226 Difference]: Without dead ends: 62 [2018-01-21 00:11:58,347 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 00:11:58,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-01-21 00:11:58,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2018-01-21 00:11:58,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-01-21 00:11:58,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 68 transitions. [2018-01-21 00:11:58,383 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 68 transitions. Word has length 24 [2018-01-21 00:11:58,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:11:58,383 INFO L432 AbstractCegarLoop]: Abstraction has 62 states and 68 transitions. [2018-01-21 00:11:58,384 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:11:58,384 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 68 transitions. [2018-01-21 00:11:58,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 00:11:58,385 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:11:58,385 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:11:58,385 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:11:58,386 INFO L82 PathProgramCache]: Analyzing trace with hash 724775855, now seen corresponding path program 1 times [2018-01-21 00:11:58,386 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:11:58,387 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:11:58,387 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:11:58,387 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:11:58,388 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:11:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:11:58,427 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:11:59,106 WARN L146 SmtUtils]: Spent 109ms on a formula simplification. DAG size of input: 26 DAG size of output 20 [2018-01-21 00:11:59,270 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 00:11:59,270 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:11:59,270 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-01-21 00:11:59,270 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:11:59,272 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-21 00:11:59,272 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-21 00:11:59,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-01-21 00:11:59,273 INFO L87 Difference]: Start difference. First operand 62 states and 68 transitions. Second operand 12 states. [2018-01-21 00:11:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:11:59,846 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2018-01-21 00:11:59,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-21 00:11:59,847 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2018-01-21 00:11:59,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:11:59,852 INFO L225 Difference]: With dead ends: 128 [2018-01-21 00:11:59,853 INFO L226 Difference]: Without dead ends: 114 [2018-01-21 00:11:59,854 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=269, Unknown=0, NotChecked=0, Total=380 [2018-01-21 00:11:59,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2018-01-21 00:11:59,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 74. [2018-01-21 00:11:59,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-01-21 00:11:59,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2018-01-21 00:11:59,863 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 32 [2018-01-21 00:11:59,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:11:59,864 INFO L432 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2018-01-21 00:11:59,864 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-21 00:11:59,864 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2018-01-21 00:11:59,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-01-21 00:11:59,866 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:11:59,866 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:11:59,866 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:11:59,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1505215911, now seen corresponding path program 1 times [2018-01-21 00:11:59,867 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:11:59,868 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:11:59,868 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:11:59,869 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:11:59,869 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:11:59,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:11:59,885 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:11:59,920 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 00:11:59,921 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:11:59,921 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 00:11:59,921 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:11:59,921 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 00:11:59,921 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 00:11:59,921 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 00:11:59,922 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand 3 states. [2018-01-21 00:11:59,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:11:59,943 INFO L93 Difference]: Finished difference Result 175 states and 194 transitions. [2018-01-21 00:11:59,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 00:11:59,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2018-01-21 00:11:59,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:11:59,949 INFO L225 Difference]: With dead ends: 175 [2018-01-21 00:11:59,949 INFO L226 Difference]: Without dead ends: 123 [2018-01-21 00:11:59,950 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 00:11:59,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-01-21 00:11:59,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 89. [2018-01-21 00:11:59,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-01-21 00:11:59,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2018-01-21 00:11:59,960 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 41 [2018-01-21 00:11:59,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:11:59,961 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2018-01-21 00:11:59,961 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 00:11:59,961 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2018-01-21 00:11:59,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-01-21 00:11:59,963 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:11:59,963 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] [2018-01-21 00:11:59,963 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:11:59,963 INFO L82 PathProgramCache]: Analyzing trace with hash 977083296, now seen corresponding path program 1 times [2018-01-21 00:11:59,963 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:11:59,964 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:11:59,965 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:11:59,965 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:11:59,965 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:11:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:11:59,982 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:12:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:12:00,454 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:12:00,454 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-01-21 00:12:00,455 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:12:00,455 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-21 00:12:00,455 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-21 00:12:00,455 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-01-21 00:12:00,455 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 13 states. [2018-01-21 00:12:00,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:12:00,828 INFO L93 Difference]: Finished difference Result 159 states and 174 transitions. [2018-01-21 00:12:00,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-21 00:12:00,829 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2018-01-21 00:12:00,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:12:00,830 INFO L225 Difference]: With dead ends: 159 [2018-01-21 00:12:00,831 INFO L226 Difference]: Without dead ends: 129 [2018-01-21 00:12:00,831 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2018-01-21 00:12:00,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-01-21 00:12:00,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 94. [2018-01-21 00:12:00,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-01-21 00:12:00,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2018-01-21 00:12:00,843 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 44 [2018-01-21 00:12:00,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:12:00,844 INFO L432 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2018-01-21 00:12:00,844 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-21 00:12:00,844 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2018-01-21 00:12:00,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-21 00:12:00,845 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:12:00,845 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] [2018-01-21 00:12:00,845 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:12:00,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1973007188, now seen corresponding path program 1 times [2018-01-21 00:12:00,846 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:12:00,847 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:12:00,847 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:12:00,847 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:12:00,847 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:12:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:12:00,864 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:12:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:12:01,371 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:12:01,371 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 00:12:01,372 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 47 with the following transitions: [2018-01-21 00:12:01,374 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [4], [8], [10], [13], [15], [16], [17], [18], [19], [20], [21], [37], [39], [43], [48], [52], [61], [62], [63], [67], [72], [76], [84], [86], [89], [128], [129], [133], [135], [138], [147], [148], [149], [151], [152], [157], [158], [159], [160], [161] [2018-01-21 00:12:01,431 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:12:01,432 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 00:13:02,769 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 00:13:02,770 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 00:13:02,770 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 00:13:02,770 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:13:02,771 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 [2018-01-21 00:13:02,777 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:13:02,777 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:13:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:13:02,828 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:13:02,834 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 00:13:02,834 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 00:13:02,837 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:13:02,838 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:13:02,838 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:13:02,838 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:13:02,838 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:13:02,838 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:13:02,838 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:13:02,838 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 00:13:02,838 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:13:02,840 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2018-01-21 00:13:02,840 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 00:13:02,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 12:13:02 BoogieIcfgContainer [2018-01-21 00:13:02,842 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 00:13:02,843 INFO L168 Benchmark]: Toolchain (without parser) took 65499.46 ms. Allocated memory was 302.5 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 260.8 MB in the beginning and 1.2 GB in the end (delta: -936.3 MB). Peak memory consumption was 1.1 GB. Max. memory is 5.3 GB. [2018-01-21 00:13:02,844 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 302.5 MB. Free memory is still 266.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:13:02,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 212.28 ms. Allocated memory is still 302.5 MB. Free memory was 259.8 MB in the beginning and 247.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:13:02,845 INFO L168 Benchmark]: Boogie Preprocessor took 41.20 ms. Allocated memory is still 302.5 MB. Free memory was 247.9 MB in the beginning and 245.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:13:02,845 INFO L168 Benchmark]: RCFGBuilder took 319.62 ms. Allocated memory is still 302.5 MB. Free memory was 245.9 MB in the beginning and 224.3 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 5.3 GB. [2018-01-21 00:13:02,845 INFO L168 Benchmark]: TraceAbstraction took 64920.64 ms. Allocated memory was 302.5 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 224.3 MB in the beginning and 1.2 GB in the end (delta: -972.8 MB). Peak memory consumption was 1.0 GB. Max. memory is 5.3 GB. [2018-01-21 00:13:02,847 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 302.5 MB. Free memory is still 266.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 212.28 ms. Allocated memory is still 302.5 MB. Free memory was 259.8 MB in the beginning and 247.9 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 41.20 ms. Allocated memory is still 302.5 MB. Free memory was 247.9 MB in the beginning and 245.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 319.62 ms. Allocated memory is still 302.5 MB. Free memory was 245.9 MB in the beginning and 224.3 MB in the end (delta: 21.6 MB). Peak memory consumption was 21.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 64920.64 ms. Allocated memory was 302.5 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 224.3 MB in the beginning and 1.2 GB in the end (delta: -972.8 MB). Peak memory consumption was 1.0 GB. 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, 65 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=65occurred 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 - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 1). Cancelled while BasicCegarLoop was analyzing trace of length 47 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 3 procedures, 65 locations, 3 error locations. TIMEOUT Result, 64.7s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 252 SDtfs, 617 SDslu, 626 SDs, 0 SdLazy, 465 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 9 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 61.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 109 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 141 NumberOfCodeBlocks, 141 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 137 ConstructedInterpolants, 0 QuantifiedInterpolants, 37843 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - TimeoutResultAtElement [Line: 982]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 982). Cancelled while IsEmpty was searching accepting run (input had 65 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 3 procedures, 65 locations, 3 error locations. TIMEOUT Result, 0.0s OverallTime, 0 OverallIterations, 0 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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: 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-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_00-13-02-857.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_00-13-02-857.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_00-13-02-857.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_00-13-02-857.csv Completed graceful shutdown