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/dll-circular_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 00:06:01,110 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 00:06:01,112 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 00:06:01,128 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 00:06:01,128 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 00:06:01,129 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 00:06:01,130 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 00:06:01,132 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 00:06:01,135 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 00:06:01,136 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 00:06:01,137 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 00:06:01,137 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 00:06:01,138 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 00:06:01,140 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 00:06:01,141 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 00:06:01,144 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 00:06:01,146 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 00:06:01,148 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 00:06:01,149 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 00:06:01,151 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 00:06:01,153 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 00:06:01,158 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 00:06:01,159 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 00:06:01,160 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 00:06:01,168 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 00:06:01,168 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 00:06:01,169 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 00:06:01,169 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 00:06:01,170 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 00:06:01,170 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 00:06:01,170 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 00:06:01,170 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 00:06:01,170 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 00:06:01,171 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 00:06:01,171 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 00:06:01,171 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 00:06:01,171 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 00:06:01,171 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 00:06:01,171 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 00:06:01,171 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 00:06:01,172 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 00:06:01,172 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 00:06:01,172 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 00:06:01,172 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 00:06:01,172 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 00:06:01,172 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 00:06:01,173 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 00:06:01,173 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 00:06:01,173 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 00:06:01,173 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:06:01,173 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 00:06:01,174 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 00:06:01,174 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 00:06:01,174 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 00:06:01,174 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 00:06:01,174 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 00:06:01,174 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 00:06:01,174 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 00:06:01,174 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 00:06:01,175 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 00:06:01,175 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 00:06:01,175 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 00:06:01,210 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 00:06:01,221 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 00:06:01,225 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 00:06:01,226 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 00:06:01,227 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 00:06:01,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular_true-unreach-call_true-valid-memsafety.i [2018-01-21 00:06:01,398 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 00:06:01,403 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 00:06:01,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 00:06:01,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 00:06:01,409 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 00:06:01,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:06:01" (1/1) ... [2018-01-21 00:06:01,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44478139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:06:01, skipping insertion in model container [2018-01-21 00:06:01,413 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:06:01" (1/1) ... [2018-01-21 00:06:01,426 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:06:01,468 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:06:01,596 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:06:01,622 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:06:01,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:06:01 WrapperNode [2018-01-21 00:06:01,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 00:06:01,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 00:06:01,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 00:06:01,632 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 00:06:01,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:06:01" (1/1) ... [2018-01-21 00:06:01,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:06:01" (1/1) ... [2018-01-21 00:06:01,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:06:01" (1/1) ... [2018-01-21 00:06:01,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:06:01" (1/1) ... [2018-01-21 00:06:01,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:06:01" (1/1) ... [2018-01-21 00:06:01,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:06:01" (1/1) ... [2018-01-21 00:06:01,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:06:01" (1/1) ... [2018-01-21 00:06:01,675 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 00:06:01,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 00:06:01,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 00:06:01,676 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 00:06:01,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:06:01" (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 00:06:01,731 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 00:06:01,731 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 00:06:01,731 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 00:06:01,731 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-21 00:06:01,732 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-21 00:06:01,732 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 00:06:01,732 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 00:06:01,732 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 00:06:01,732 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 00:06:01,732 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 00:06:01,733 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-21 00:06:01,733 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-21 00:06:01,733 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 00:06:01,733 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-21 00:06:01,733 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 00:06:01,733 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 00:06:01,734 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 00:06:02,021 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 00:06:02,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:06:02 BoogieIcfgContainer [2018-01-21 00:06:02,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 00:06:02,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 00:06:02,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 00:06:02,026 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 00:06:02,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 12:06:01" (1/3) ... [2018-01-21 00:06:02,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba47c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:06:02, skipping insertion in model container [2018-01-21 00:06:02,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:06:01" (2/3) ... [2018-01-21 00:06:02,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ba47c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:06:02, skipping insertion in model container [2018-01-21 00:06:02,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:06:02" (3/3) ... [2018-01-21 00:06:02,030 INFO L105 eAbstractionObserver]: Analyzing ICFG dll-circular_true-unreach-call_true-valid-memsafety.i [2018-01-21 00:06:02,040 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 00:06:02,048 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 00:06:02,089 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:06:02,089 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:06:02,089 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:06:02,089 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:06:02,089 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:06:02,089 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:06:02,089 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:06:02,089 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 00:06:02,090 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:06:02,107 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 00:06:02,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 00:06:02,112 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:06:02,112 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 00:06:02,113 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 00:06:02,116 INFO L82 PathProgramCache]: Analyzing trace with hash 190435, now seen corresponding path program 1 times [2018-01-21 00:06:02,118 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:06:02,160 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:06:02,160 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:06:02,160 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:06:02,160 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:06:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:06:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:06:02,212 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:06:02,218 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:06:02,227 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:06:02,227 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:06:02,227 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:06:02,227 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:06:02,228 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:06:02,228 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:06:02,228 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:06:02,228 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 00:06:02,228 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:06:02,231 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 00:06:02,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 00:06:02,234 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:06:02,234 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:06:02,234 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:06:02,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1526713431, now seen corresponding path program 1 times [2018-01-21 00:06:02,235 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:06:02,236 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:06:02,236 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:06:02,236 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:06:02,237 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:06:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:06:02,277 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:06:02,417 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 00:06:02,419 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:06:02,420 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-21 00:06:02,420 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:06:02,422 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-21 00:06:02,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-21 00:06:02,433 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-21 00:06:02,435 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 2 states. [2018-01-21 00:06:02,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:06:02,457 INFO L93 Difference]: Finished difference Result 126 states and 162 transitions. [2018-01-21 00:06:02,457 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-21 00:06:02,458 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-01-21 00:06:02,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:06:02,469 INFO L225 Difference]: With dead ends: 126 [2018-01-21 00:06:02,469 INFO L226 Difference]: Without dead ends: 66 [2018-01-21 00:06:02,472 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 00:06:02,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-01-21 00:06:02,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-01-21 00:06:02,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-21 00:06:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2018-01-21 00:06:02,506 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 25 [2018-01-21 00:06:02,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:06:02,507 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2018-01-21 00:06:02,507 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-21 00:06:02,507 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2018-01-21 00:06:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-21 00:06:02,508 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:06:02,509 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] [2018-01-21 00:06:02,509 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:06:02,509 INFO L82 PathProgramCache]: Analyzing trace with hash -97713131, now seen corresponding path program 1 times [2018-01-21 00:06:02,509 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:06:02,510 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:06:02,510 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:06:02,510 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:06:02,511 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:06:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:06:02,551 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:06:03,189 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 00:06:03,190 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:06:03,190 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-01-21 00:06:03,190 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:06:03,192 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-21 00:06:03,192 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-21 00:06:03,193 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-01-21 00:06:03,193 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 10 states. [2018-01-21 00:06:03,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:06:03,724 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2018-01-21 00:06:03,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-21 00:06:03,725 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2018-01-21 00:06:03,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:06:03,730 INFO L225 Difference]: With dead ends: 132 [2018-01-21 00:06:03,730 INFO L226 Difference]: Without dead ends: 118 [2018-01-21 00:06:03,732 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2018-01-21 00:06:03,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-01-21 00:06:03,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 78. [2018-01-21 00:06:03,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-01-21 00:06:03,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 85 transitions. [2018-01-21 00:06:03,744 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 85 transitions. Word has length 33 [2018-01-21 00:06:03,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:06:03,745 INFO L432 AbstractCegarLoop]: Abstraction has 78 states and 85 transitions. [2018-01-21 00:06:03,745 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-21 00:06:03,745 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 85 transitions. [2018-01-21 00:06:03,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-01-21 00:06:03,746 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:06:03,747 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:06:03,747 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:06:03,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1309040711, now seen corresponding path program 1 times [2018-01-21 00:06:03,747 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:06:03,748 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:06:03,748 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:06:03,748 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:06:03,749 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:06:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:06:03,767 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:06:03,802 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 00:06:03,802 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:06:03,803 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-21 00:06:03,803 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:06:03,803 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-21 00:06:03,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-21 00:06:03,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-21 00:06:03,804 INFO L87 Difference]: Start difference. First operand 78 states and 85 transitions. Second operand 3 states. [2018-01-21 00:06:03,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:06:03,846 INFO L93 Difference]: Finished difference Result 185 states and 204 transitions. [2018-01-21 00:06:03,847 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-21 00:06:03,847 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2018-01-21 00:06:03,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:06:03,850 INFO L225 Difference]: With dead ends: 185 [2018-01-21 00:06:03,850 INFO L226 Difference]: Without dead ends: 130 [2018-01-21 00:06:03,851 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 00:06:03,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-01-21 00:06:03,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 96. [2018-01-21 00:06:03,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-01-21 00:06:03,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2018-01-21 00:06:03,864 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 45 [2018-01-21 00:06:03,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:06:03,864 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2018-01-21 00:06:03,864 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-21 00:06:03,865 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2018-01-21 00:06:03,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-01-21 00:06:03,866 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:06:03,866 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 00:06:03,866 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:06:03,867 INFO L82 PathProgramCache]: Analyzing trace with hash -403724794, now seen corresponding path program 1 times [2018-01-21 00:06:03,867 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:06:03,868 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:06:03,868 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:06:03,868 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:06:03,868 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:06:03,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:06:03,888 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:06:04,479 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 00:06:04,479 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:06:04,479 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-01-21 00:06:04,480 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:06:04,480 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-21 00:06:04,480 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-21 00:06:04,480 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2018-01-21 00:06:04,480 INFO L87 Difference]: Start difference. First operand 96 states and 105 transitions. Second operand 13 states. [2018-01-21 00:06:04,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:06:04,821 INFO L93 Difference]: Finished difference Result 166 states and 181 transitions. [2018-01-21 00:06:04,821 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-01-21 00:06:04,821 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2018-01-21 00:06:04,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:06:04,823 INFO L225 Difference]: With dead ends: 166 [2018-01-21 00:06:04,823 INFO L226 Difference]: Without dead ends: 136 [2018-01-21 00:06:04,824 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=323, Unknown=0, NotChecked=0, Total=462 [2018-01-21 00:06:04,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2018-01-21 00:06:04,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 101. [2018-01-21 00:06:04,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-01-21 00:06:04,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 110 transitions. [2018-01-21 00:06:04,834 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 110 transitions. Word has length 45 [2018-01-21 00:06:04,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:06:04,834 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 110 transitions. [2018-01-21 00:06:04,834 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-21 00:06:04,834 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 110 transitions. [2018-01-21 00:06:04,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-01-21 00:06:04,836 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:06:04,836 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, 1, 1] [2018-01-21 00:06:04,836 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:06:04,836 INFO L82 PathProgramCache]: Analyzing trace with hash 804308226, now seen corresponding path program 1 times [2018-01-21 00:06:04,837 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:06:04,837 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:06:04,837 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:06:04,837 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:06:04,838 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:06:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:06:04,856 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-21 00:06:05,181 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 00:06:05,181 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:06:05,181 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-01-21 00:06:05,182 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 50 with the following transitions: [2018-01-21 00:06:05,184 INFO L201 CegarAbsIntRunner]: [0], [1], [2], [3], [4], [5], [9], [11], [14], [65], [66], [67], [71], [76], [80], [88], [90], [93], [95], [99], [100], [101], [102], [107], [108], [109], [110], [111], [117], [121], [127], [128], [132], [133], [137], [139], [142], [151], [152], [153], [155], [156], [161], [162], [163], [164], [165] [2018-01-21 00:06:05,243 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:06:05,243 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-01-21 00:07:08,514 WARN L571 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-01-21 00:07:08,514 WARN L157 AbstractInterpreter]: Abstract interpretation run out of time [2018-01-21 00:07:08,515 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 00:07:08,515 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:07:08,515 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 00:07:08,521 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:07:08,521 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:07:08,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:07:08,559 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:07:08,565 INFO L175 TraceCheckSpWp]: Timeout while computing interpolants [2018-01-21 00:07:08,565 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 00:07:08,567 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:07:08,568 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:07:08,568 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:07:08,568 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:07:08,568 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:07:08,568 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:07:08,568 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:07:08,568 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 00:07:08,568 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:07:08,569 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2018-01-21 00:07:08,570 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-21 00:07:08,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 12:07:08 BoogieIcfgContainer [2018-01-21 00:07:08,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 00:07:08,571 INFO L168 Benchmark]: Toolchain (without parser) took 67172.62 ms. Allocated memory was 300.9 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 259.3 MB in the beginning and 757.0 MB in the end (delta: -497.7 MB). Peak memory consumption was 1.5 GB. Max. memory is 5.3 GB. [2018-01-21 00:07:08,572 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 300.9 MB. Free memory is still 265.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:07:08,573 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.97 ms. Allocated memory is still 300.9 MB. Free memory was 258.3 MB in the beginning and 246.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:07:08,573 INFO L168 Benchmark]: Boogie Preprocessor took 42.91 ms. Allocated memory is still 300.9 MB. Free memory was 246.3 MB in the beginning and 244.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:07:08,573 INFO L168 Benchmark]: RCFGBuilder took 347.20 ms. Allocated memory is still 300.9 MB. Free memory was 244.3 MB in the beginning and 221.6 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 5.3 GB. [2018-01-21 00:07:08,574 INFO L168 Benchmark]: TraceAbstraction took 66547.21 ms. Allocated memory was 300.9 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 221.6 MB in the beginning and 757.0 MB in the end (delta: -535.3 MB). Peak memory consumption was 1.4 GB. Max. memory is 5.3 GB. [2018-01-21 00:07:08,576 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 300.9 MB. Free memory is still 265.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 227.97 ms. Allocated memory is still 300.9 MB. Free memory was 258.3 MB in the beginning and 246.3 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 42.91 ms. Allocated memory is still 300.9 MB. Free memory was 246.3 MB in the beginning and 244.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 347.20 ms. Allocated memory is still 300.9 MB. Free memory was 244.3 MB in the beginning and 221.6 MB in the end (delta: 22.7 MB). Peak memory consumption was 22.7 MB. Max. memory is 5.3 GB. * TraceAbstraction took 66547.21 ms. Allocated memory was 300.9 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 221.6 MB in the beginning and 757.0 MB in the end (delta: -535.3 MB). Peak memory consumption was 1.4 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, 69 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=69occurred 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 50 with TraceHistMax 2, while TraceCheckSpWp was constructing forward predicates, while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates. - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 3 procedures, 69 locations, 3 error locations. TIMEOUT Result, 66.3s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 255 SDtfs, 645 SDslu, 553 SDs, 0 SdLazy, 383 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 8 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=101occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 63.3s 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, 148 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 42388 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: 983]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 983). Cancelled while IsEmpty was searching accepting run (input had 69 states). - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 3 procedures, 69 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=69occurred 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/dll-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-21_00-07-08-586.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-21_00-07-08-586.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-21_00-07-08-586.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/dll-circular_true-unreach-call_true-valid-memsafety.i_mempurity-32bit-Automizer_Taipan+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-21_00-07-08-586.csv Completed graceful shutdown