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_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/memsafety-ext2/split_list_test05_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-47db877 [2018-01-23 14:31:55,172 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-23 14:31:55,174 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-23 14:31:55,186 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-23 14:31:55,186 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-23 14:31:55,187 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-23 14:31:55,188 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-23 14:31:55,189 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-23 14:31:55,192 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-23 14:31:55,192 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-23 14:31:55,193 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-23 14:31:55,193 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-23 14:31:55,194 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-23 14:31:55,195 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-23 14:31:55,195 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-23 14:31:55,198 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-23 14:31:55,200 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-23 14:31:55,202 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-23 14:31:55,203 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-23 14:31:55,205 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-23 14:31:55,207 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-23 14:31:55,213 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-23 14:31:55,223 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-23 14:31:55,223 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-23 14:31:55,224 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-23 14:31:55,224 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-23 14:31:55,225 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-23 14:31:55,225 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-23 14:31:55,225 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-23 14:31:55,226 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-23 14:31:55,226 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-23 14:31:55,226 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-23 14:31:55,226 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-23 14:31:55,226 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-23 14:31:55,227 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-23 14:31:55,227 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-23 14:31:55,227 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-23 14:31:55,227 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-23 14:31:55,227 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-23 14:31:55,228 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-23 14:31:55,228 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-23 14:31:55,228 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-23 14:31:55,228 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-23 14:31:55,228 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-23 14:31:55,229 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-23 14:31:55,229 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-23 14:31:55,229 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-23 14:31:55,229 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-23 14:31:55,229 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-23 14:31:55,230 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-23 14:31:55,230 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-23 14:31:55,230 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-23 14:31:55,230 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-23 14:31:55,230 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-23 14:31:55,231 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-23 14:31:55,231 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-23 14:31:55,231 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-23 14:31:55,232 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-23 14:31:55,232 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-23 14:31:55,267 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-23 14:31:55,281 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-23 14:31:55,285 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-23 14:31:55,287 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-23 14:31:55,287 INFO L276 PluginConnector]: CDTParser initialized [2018-01-23 14:31:55,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext2/split_list_test05_false-valid-deref.i [2018-01-23 14:31:55,496 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-23 14:31:55,500 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-23 14:31:55,501 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-23 14:31:55,501 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-23 14:31:55,506 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-23 14:31:55,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:31:55" (1/1) ... [2018-01-23 14:31:55,510 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27608974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:31:55, skipping insertion in model container [2018-01-23 14:31:55,510 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:31:55" (1/1) ... [2018-01-23 14:31:55,523 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:31:55,561 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:31:55,690 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:31:55,721 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:31:55,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:31:55 WrapperNode [2018-01-23 14:31:55,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-23 14:31:55,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-23 14:31:55,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-23 14:31:55,735 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-23 14:31:55,745 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:31:55" (1/1) ... [2018-01-23 14:31:55,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:31:55" (1/1) ... [2018-01-23 14:31:55,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:31:55" (1/1) ... [2018-01-23 14:31:55,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:31:55" (1/1) ... [2018-01-23 14:31:55,772 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:31:55" (1/1) ... [2018-01-23 14:31:55,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:31:55" (1/1) ... [2018-01-23 14:31:55,781 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:31:55" (1/1) ... [2018-01-23 14:31:55,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-23 14:31:55,786 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-23 14:31:55,786 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-23 14:31:55,786 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-23 14:31:55,787 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:31:55" (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 [2018-01-23 14:31:55,833 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-23 14:31:55,833 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-23 14:31:55,833 INFO L136 BoogieDeclarations]: Found implementation of procedure containsHead [2018-01-23 14:31:55,833 INFO L136 BoogieDeclarations]: Found implementation of procedure containsBody [2018-01-23 14:31:55,833 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-01-23 14:31:55,833 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-23 14:31:55,834 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-23 14:31:55,834 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-23 14:31:55,834 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-23 14:31:55,834 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-23 14:31:55,834 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-23 14:31:55,834 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-23 14:31:55,834 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-23 14:31:55,834 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-23 14:31:55,834 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2018-01-23 14:31:55,834 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-23 14:31:55,835 INFO L128 BoogieDeclarations]: Found specification of procedure containsHead [2018-01-23 14:31:55,835 INFO L128 BoogieDeclarations]: Found specification of procedure containsBody [2018-01-23 14:31:55,835 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-01-23 14:31:55,835 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-23 14:31:55,835 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-23 14:31:55,835 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-23 14:31:56,510 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-23 14:31:56,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:31:56 BoogieIcfgContainer [2018-01-23 14:31:56,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-23 14:31:56,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-23 14:31:56,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-23 14:31:56,550 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-23 14:31:56,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 02:31:55" (1/3) ... [2018-01-23 14:31:56,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e6d79a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:31:56, skipping insertion in model container [2018-01-23 14:31:56,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:31:55" (2/3) ... [2018-01-23 14:31:56,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e6d79a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:31:56, skipping insertion in model container [2018-01-23 14:31:56,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:31:56" (3/3) ... [2018-01-23 14:31:56,553 INFO L105 eAbstractionObserver]: Analyzing ICFG split_list_test05_false-valid-deref.i [2018-01-23 14:31:56,560 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-23 14:31:56,569 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-23 14:31:56,620 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:31:56,620 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:31:56,620 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:31:56,620 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:31:56,620 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:31:56,620 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:31:56,621 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:31:56,621 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-23 14:31:56,622 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:31:56,647 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2018-01-23 14:31:56,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-23 14:31:56,653 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:31:56,654 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-23 14:31:56,654 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-23 14:31:56,659 INFO L82 PathProgramCache]: Analyzing trace with hash 425620, now seen corresponding path program 1 times [2018-01-23 14:31:56,661 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:31:56,662 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:31:56,707 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:56,707 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:31:56,707 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:31:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:31:56,760 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:31:56,766 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:31:56,774 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:31:56,774 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:31:56,775 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:31:56,775 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:31:56,775 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:31:56,775 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:31:56,775 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:31:56,775 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == containsHeadErr0EnsuresViolation======== [2018-01-23 14:31:56,776 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:31:56,799 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2018-01-23 14:31:56,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-01-23 14:31:56,815 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:31:56,815 INFO L322 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:31:56,816 INFO L371 AbstractCegarLoop]: === Iteration 1 === [containsHeadErr0EnsuresViolation]=== [2018-01-23 14:31:56,816 INFO L82 PathProgramCache]: Analyzing trace with hash 845880362, now seen corresponding path program 1 times [2018-01-23 14:31:56,817 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:31:56,817 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:31:56,817 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:56,818 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:31:56,818 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:56,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:31:56,949 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:31:57,170 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-01-23 14:31:57,172 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:31:57,173 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:31:57,174 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:31:57,184 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:31:57,184 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:31:57,186 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 2 states. [2018-01-23 14:31:57,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:31:57,224 INFO L93 Difference]: Finished difference Result 381 states and 477 transitions. [2018-01-23 14:31:57,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:31:57,226 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 198 [2018-01-23 14:31:57,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:31:57,231 INFO L225 Difference]: With dead ends: 381 [2018-01-23 14:31:57,231 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:31:57,237 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 [2018-01-23 14:31:57,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:31:57,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:31:57,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:31:57,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:31:57,257 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 198 [2018-01-23 14:31:57,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:31:57,257 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:31:57,257 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:31:57,257 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:31:57,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:31:57,260 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:31:57,260 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:31:57,261 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:31:57,261 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:31:57,261 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:31:57,261 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:31:57,261 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:31:57,261 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == containsBodyErr0EnsuresViolation======== [2018-01-23 14:31:57,261 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:31:57,264 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2018-01-23 14:31:57,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2018-01-23 14:31:57,273 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:31:57,273 INFO L322 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:31:57,273 INFO L371 AbstractCegarLoop]: === Iteration 1 === [containsBodyErr0EnsuresViolation]=== [2018-01-23 14:31:57,273 INFO L82 PathProgramCache]: Analyzing trace with hash -418021682, now seen corresponding path program 1 times [2018-01-23 14:31:57,273 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:31:57,274 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:31:57,275 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:57,275 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:31:57,275 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:57,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:31:57,304 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:31:57,415 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-01-23 14:31:57,415 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:31:57,416 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:31:57,416 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:31:57,417 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:31:57,417 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:31:57,417 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 2 states. [2018-01-23 14:31:57,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:31:57,438 INFO L93 Difference]: Finished difference Result 381 states and 477 transitions. [2018-01-23 14:31:57,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:31:57,439 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 201 [2018-01-23 14:31:57,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:31:57,439 INFO L225 Difference]: With dead ends: 381 [2018-01-23 14:31:57,439 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:31:57,441 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 [2018-01-23 14:31:57,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:31:57,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:31:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:31:57,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:31:57,442 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 201 [2018-01-23 14:31:57,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:31:57,443 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:31:57,443 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:31:57,443 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:31:57,443 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:31:57,446 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:31:57,446 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:31:57,446 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:31:57,446 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:31:57,446 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:31:57,446 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:31:57,447 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:31:57,447 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-23 14:31:57,447 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:31:57,450 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2018-01-23 14:31:57,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-01-23 14:31:57,455 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:31:57,455 INFO L322 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 1, 1, 1, 1, 1, 1] [2018-01-23 14:31:57,455 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:31:57,455 INFO L82 PathProgramCache]: Analyzing trace with hash -500451978, now seen corresponding path program 1 times [2018-01-23 14:31:57,456 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:31:57,456 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:31:57,457 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:57,457 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:31:57,457 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:31:57,479 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:31:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-01-23 14:31:57,593 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:31:57,593 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:31:57,594 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:31:57,594 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:31:57,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:31:57,594 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 2 states. [2018-01-23 14:31:57,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:31:57,610 INFO L93 Difference]: Finished difference Result 381 states and 477 transitions. [2018-01-23 14:31:57,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:31:57,610 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 194 [2018-01-23 14:31:57,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:31:57,616 INFO L225 Difference]: With dead ends: 381 [2018-01-23 14:31:57,616 INFO L226 Difference]: Without dead ends: 191 [2018-01-23 14:31:57,617 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 [2018-01-23 14:31:57,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-01-23 14:31:57,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-01-23 14:31:57,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-23 14:31:57,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 227 transitions. [2018-01-23 14:31:57,640 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 227 transitions. Word has length 194 [2018-01-23 14:31:57,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:31:57,641 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 227 transitions. [2018-01-23 14:31:57,641 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:31:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 227 transitions. [2018-01-23 14:31:57,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-01-23 14:31:57,646 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:31:57,647 INFO L322 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 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, 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] [2018-01-23 14:31:57,647 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:31:57,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1705669942, now seen corresponding path program 1 times [2018-01-23 14:31:57,647 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:31:57,647 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:31:57,648 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:57,649 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:31:57,649 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:57,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:31:57,683 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:31:57,857 INFO L134 CoverageAnalysis]: Checked inductivity of 1274 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 1183 trivial. 0 not checked. [2018-01-23 14:31:57,858 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:31:57,858 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP 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 [2018-01-23 14:31:57,870 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:31:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:31:58,121 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:31:58,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1274 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2018-01-23 14:31:58,228 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:31:58,228 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2018-01-23 14:31:58,229 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-23 14:31:58,230 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-23 14:31:58,230 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:31:58,230 INFO L87 Difference]: Start difference. First operand 191 states and 227 transitions. Second operand 3 states. [2018-01-23 14:31:58,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:31:58,264 INFO L93 Difference]: Finished difference Result 373 states and 460 transitions. [2018-01-23 14:31:58,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-23 14:31:58,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 265 [2018-01-23 14:31:58,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:31:58,267 INFO L225 Difference]: With dead ends: 373 [2018-01-23 14:31:58,267 INFO L226 Difference]: Without dead ends: 192 [2018-01-23 14:31:58,269 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:31:58,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-23 14:31:58,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-01-23 14:31:58,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-23 14:31:58,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 228 transitions. [2018-01-23 14:31:58,287 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 228 transitions. Word has length 265 [2018-01-23 14:31:58,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:31:58,288 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 228 transitions. [2018-01-23 14:31:58,288 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-23 14:31:58,288 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 228 transitions. [2018-01-23 14:31:58,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-01-23 14:31:58,294 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:31:58,295 INFO L322 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 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, 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] [2018-01-23 14:31:58,295 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:31:58,295 INFO L82 PathProgramCache]: Analyzing trace with hash 2037383376, now seen corresponding path program 1 times [2018-01-23 14:31:58,296 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:31:58,296 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:31:58,297 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:58,297 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:31:58,297 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:31:58,339 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:31:58,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1456 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 1248 trivial. 0 not checked. [2018-01-23 14:31:58,593 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:31:58,594 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:31:58,602 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:31:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:31:58,840 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:31:58,870 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|append_#t~malloc52.base| Int)) (and (<= (select |c_old(#valid)| |append_#t~malloc52.base|) 0) (= |c_#valid| (store |c_old(#valid)| |append_#t~malloc52.base| 1)))) is different from true [2018-01-23 14:31:58,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1456 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-01-23 14:31:59,003 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:31:59,004 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2018-01-23 14:31:59,005 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:31:59,005 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:31:59,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2018-01-23 14:31:59,005 INFO L87 Difference]: Start difference. First operand 192 states and 228 transitions. Second operand 5 states. [2018-01-23 14:31:59,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:31:59,053 INFO L93 Difference]: Finished difference Result 221 states and 261 transitions. [2018-01-23 14:31:59,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:31:59,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 293 [2018-01-23 14:31:59,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:31:59,054 INFO L225 Difference]: With dead ends: 221 [2018-01-23 14:31:59,054 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:31:59,055 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=12, Unknown=2, NotChecked=6, Total=30 [2018-01-23 14:31:59,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:31:59,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:31:59,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:31:59,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:31:59,060 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 293 [2018-01-23 14:31:59,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:31:59,060 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:31:59,060 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:31:59,061 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:31:59,061 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:31:59,062 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:31:59,062 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:31:59,063 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:31:59,063 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:31:59,063 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:31:59,063 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:31:59,072 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:31:59,072 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-23 14:31:59,072 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:31:59,075 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2018-01-23 14:31:59,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-01-23 14:31:59,078 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:31:59,078 INFO L322 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 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, 1, 1, 1, 1] [2018-01-23 14:31:59,078 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-23 14:31:59,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1555826309, now seen corresponding path program 1 times [2018-01-23 14:31:59,078 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:31:59,079 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:31:59,080 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:59,080 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:31:59,080 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:59,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:31:59,096 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:31:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2018-01-23 14:31:59,170 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:31:59,171 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:31:59,171 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:31:59,171 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:31:59,172 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:31:59,172 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 2 states. [2018-01-23 14:31:59,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:31:59,186 INFO L93 Difference]: Finished difference Result 381 states and 477 transitions. [2018-01-23 14:31:59,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:31:59,186 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 192 [2018-01-23 14:31:59,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:31:59,188 INFO L225 Difference]: With dead ends: 381 [2018-01-23 14:31:59,188 INFO L226 Difference]: Without dead ends: 189 [2018-01-23 14:31:59,189 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 [2018-01-23 14:31:59,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-01-23 14:31:59,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2018-01-23 14:31:59,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2018-01-23 14:31:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 225 transitions. [2018-01-23 14:31:59,206 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 225 transitions. Word has length 192 [2018-01-23 14:31:59,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:31:59,206 INFO L432 AbstractCegarLoop]: Abstraction has 189 states and 225 transitions. [2018-01-23 14:31:59,206 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:31:59,206 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 225 transitions. [2018-01-23 14:31:59,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-01-23 14:31:59,209 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:31:59,209 INFO L322 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 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, 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] [2018-01-23 14:31:59,210 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-23 14:31:59,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1597303857, now seen corresponding path program 1 times [2018-01-23 14:31:59,210 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:31:59,210 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:31:59,211 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:59,211 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:31:59,211 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:31:59,235 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:31:59,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1274 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 1183 trivial. 0 not checked. [2018-01-23 14:31:59,382 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:31:59,382 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:31:59,397 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:31:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:31:59,541 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:31:59,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1274 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 1170 trivial. 0 not checked. [2018-01-23 14:31:59,595 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:31:59,595 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2018-01-23 14:31:59,595 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-23 14:31:59,596 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-23 14:31:59,596 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:31:59,596 INFO L87 Difference]: Start difference. First operand 189 states and 225 transitions. Second operand 3 states. [2018-01-23 14:31:59,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:31:59,664 INFO L93 Difference]: Finished difference Result 369 states and 456 transitions. [2018-01-23 14:31:59,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-23 14:31:59,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 263 [2018-01-23 14:31:59,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:31:59,666 INFO L225 Difference]: With dead ends: 369 [2018-01-23 14:31:59,667 INFO L226 Difference]: Without dead ends: 190 [2018-01-23 14:31:59,667 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:31:59,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-01-23 14:31:59,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-01-23 14:31:59,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-23 14:31:59,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 226 transitions. [2018-01-23 14:31:59,680 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 226 transitions. Word has length 263 [2018-01-23 14:31:59,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:31:59,680 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 226 transitions. [2018-01-23 14:31:59,680 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-23 14:31:59,680 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 226 transitions. [2018-01-23 14:31:59,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-01-23 14:31:59,682 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:31:59,682 INFO L322 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 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, 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] [2018-01-23 14:31:59,682 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-23 14:31:59,682 INFO L82 PathProgramCache]: Analyzing trace with hash 435639125, now seen corresponding path program 1 times [2018-01-23 14:31:59,682 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:31:59,683 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:31:59,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:59,683 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:31:59,683 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:31:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:31:59,705 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:31:59,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1456 backedges. 0 proven. 208 refuted. 0 times theorem prover too weak. 1248 trivial. 0 not checked. [2018-01-23 14:31:59,836 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:31:59,836 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:31:59,849 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:31:59,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:00,005 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:32:00,030 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|append_#t~malloc52.base| Int)) (and (<= (select |c_old(#valid)| |append_#t~malloc52.base|) 0) (= |c_#valid| (store |c_old(#valid)| |append_#t~malloc52.base| 1)))) is different from true [2018-01-23 14:32:00,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1456 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 1261 trivial. 0 not checked. [2018-01-23 14:32:00,130 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:32:00,132 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2018-01-23 14:32:00,133 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:32:00,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:32:00,133 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2018-01-23 14:32:00,134 INFO L87 Difference]: Start difference. First operand 190 states and 226 transitions. Second operand 5 states. [2018-01-23 14:32:00,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:00,202 INFO L93 Difference]: Finished difference Result 219 states and 259 transitions. [2018-01-23 14:32:00,202 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:32:00,203 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 291 [2018-01-23 14:32:00,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:00,203 INFO L225 Difference]: With dead ends: 219 [2018-01-23 14:32:00,203 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:32:00,204 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=12, Unknown=2, NotChecked=6, Total=30 [2018-01-23 14:32:00,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:32:00,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:32:00,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:32:00,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:32:00,205 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 291 [2018-01-23 14:32:00,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:00,205 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:32:00,206 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:32:00,206 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:32:00,206 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:32:00,208 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:32:00,208 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:32:00,208 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:32:00,208 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:32:00,208 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:32:00,208 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:32:00,208 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:32:00,208 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == appendErr0EnsuresViolation======== [2018-01-23 14:32:00,208 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:32:00,210 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states. [2018-01-23 14:32:00,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-23 14:32:00,211 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:00,211 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] [2018-01-23 14:32:00,211 INFO L371 AbstractCegarLoop]: === Iteration 1 === [appendErr0EnsuresViolation]=== [2018-01-23 14:32:00,211 INFO L82 PathProgramCache]: Analyzing trace with hash 380673925, now seen corresponding path program 1 times [2018-01-23 14:32:00,212 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:00,212 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:00,212 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:00,213 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:32:00,213 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:00,216 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:00,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:00,220 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:32:00,220 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:32:00,221 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:32:00,221 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:32:00,221 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:32:00,221 INFO L87 Difference]: Start difference. First operand 197 states. Second operand 2 states. [2018-01-23 14:32:00,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:00,229 INFO L93 Difference]: Finished difference Result 381 states and 477 transitions. [2018-01-23 14:32:00,229 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:32:00,229 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-01-23 14:32:00,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:00,230 INFO L225 Difference]: With dead ends: 381 [2018-01-23 14:32:00,230 INFO L226 Difference]: Without dead ends: 64 [2018-01-23 14:32:00,231 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 [2018-01-23 14:32:00,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-01-23 14:32:00,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-01-23 14:32:00,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-01-23 14:32:00,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 84 transitions. [2018-01-23 14:32:00,237 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 84 transitions. Word has length 25 [2018-01-23 14:32:00,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:00,238 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 84 transitions. [2018-01-23 14:32:00,238 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:32:00,238 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 84 transitions. [2018-01-23 14:32:00,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-23 14:32:00,238 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:00,238 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:00,239 INFO L371 AbstractCegarLoop]: === Iteration 2 === [appendErr0EnsuresViolation]=== [2018-01-23 14:32:00,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1002851180, now seen corresponding path program 1 times [2018-01-23 14:32:00,239 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:00,239 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:00,239 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:00,239 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:32:00,240 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:00,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:32:00,245 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:32:00,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:32:00,255 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:32:00,255 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-23 14:32:00,256 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-23 14:32:00,256 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-23 14:32:00,256 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:32:00,256 INFO L87 Difference]: Start difference. First operand 64 states and 84 transitions. Second operand 3 states. [2018-01-23 14:32:00,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:32:00,281 INFO L93 Difference]: Finished difference Result 119 states and 174 transitions. [2018-01-23 14:32:00,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-23 14:32:00,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-01-23 14:32:00,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:32:00,282 INFO L225 Difference]: With dead ends: 119 [2018-01-23 14:32:00,282 INFO L226 Difference]: Without dead ends: 65 [2018-01-23 14:32:00,282 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 [2018-01-23 14:32:00,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-23 14:32:00,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-01-23 14:32:00,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-23 14:32:00,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 85 transitions. [2018-01-23 14:32:00,287 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 85 transitions. Word has length 27 [2018-01-23 14:32:00,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:32:00,288 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 85 transitions. [2018-01-23 14:32:00,288 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-23 14:32:00,288 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 85 transitions. [2018-01-23 14:32:00,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-23 14:32:00,288 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:32:00,288 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:32:00,288 INFO L371 AbstractCegarLoop]: === Iteration 3 === [appendErr0EnsuresViolation]=== [2018-01-23 14:32:00,289 INFO L82 PathProgramCache]: Analyzing trace with hash -23953007, now seen corresponding path program 1 times [2018-01-23 14:32:00,289 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:32:00,289 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:32:00,289 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:00,289 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:32:00,290 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:32:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:32:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:32:00,327 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:32:00,333 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:32:00,338 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:32:00,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.01 02:32:00 BoogieIcfgContainer [2018-01-23 14:32:00,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-23 14:32:00,352 INFO L168 Benchmark]: Toolchain (without parser) took 4855.91 ms. Allocated memory was 309.9 MB in the beginning and 706.2 MB in the end (delta: 396.4 MB). Free memory was 268.6 MB in the beginning and 471.5 MB in the end (delta: -202.9 MB). Peak memory consumption was 193.5 MB. Max. memory is 5.3 GB. [2018-01-23 14:32:00,353 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 309.9 MB. Free memory is still 274.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-23 14:32:00,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.29 ms. Allocated memory is still 309.9 MB. Free memory was 268.6 MB in the beginning and 256.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:32:00,353 INFO L168 Benchmark]: Boogie Preprocessor took 51.02 ms. Allocated memory is still 309.9 MB. Free memory was 256.6 MB in the beginning and 252.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:32:00,354 INFO L168 Benchmark]: RCFGBuilder took 761.31 ms. Allocated memory is still 309.9 MB. Free memory was 252.7 MB in the beginning and 205.2 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 5.3 GB. [2018-01-23 14:32:00,354 INFO L168 Benchmark]: TraceAbstraction took 3803.66 ms. Allocated memory was 309.9 MB in the beginning and 706.2 MB in the end (delta: 396.4 MB). Free memory was 205.2 MB in the beginning and 471.5 MB in the end (delta: -266.3 MB). Peak memory consumption was 130.1 MB. Max. memory is 5.3 GB. [2018-01-23 14:32:00,355 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 309.9 MB. Free memory is still 274.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 233.29 ms. Allocated memory is still 309.9 MB. Free memory was 268.6 MB in the beginning and 256.6 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 51.02 ms. Allocated memory is still 309.9 MB. Free memory was 256.6 MB in the beginning and 252.7 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 761.31 ms. Allocated memory is still 309.9 MB. Free memory was 252.7 MB in the beginning and 205.2 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 5.3 GB. * TraceAbstraction took 3803.66 ms. Allocated memory was 309.9 MB in the beginning and 706.2 MB in the end (delta: 396.4 MB). Free memory was 205.2 MB in the beginning and 471.5 MB in the end (delta: -266.3 MB). Peak memory consumption was 130.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - 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 6 procedures, 197 locations, 6 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=197occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 539]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: containsHeadErr0EnsuresViolation CFG has 6 procedures, 197 locations, 6 error locations. SAFE Result, 0.4s OverallTime, 1 OverallIterations, 11 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 231 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 198 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 38809 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 770/770 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 543]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: containsBodyErr0EnsuresViolation CFG has 6 procedures, 197 locations, 6 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 11 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 231 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 201 NumberOfCodeBlocks, 201 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 40000 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 770/770 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 1]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.startErr0EnsuresViolation CFG has 6 procedures, 197 locations, 6 error locations. SAFE Result, 1.6s OverallTime, 3 OverallIterations, 14 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 494 SDtfs, 18 SDslu, 253 SDs, 0 SdLazy, 19 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 566 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 1310 NumberOfCodeBlocks, 1310 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1305 ConstructedInterpolants, 13 QuantifiedInterpolants, 406973 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1972 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 5931/6230 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 562]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: mainErr0EnsuresViolation CFG has 6 procedures, 197 locations, 6 error locations. SAFE Result, 1.1s OverallTime, 3 OverallIterations, 14 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 492 SDtfs, 18 SDslu, 251 SDs, 0 SdLazy, 19 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 562 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 1300 NumberOfCodeBlocks, 1300 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1295 ConstructedInterpolants, 13 QuantifiedInterpolants, 401363 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1966 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 5931/6230 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 547]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L563] EXPR, FCALL malloc(sizeof *list) VAL [malloc(sizeof *list)={16:0}] [L563] struct list_t *list = malloc(sizeof *list); VAL [list={16:0}, malloc(sizeof *list)={16:0}] [L564] FCALL list->first = ((void *)0) VAL [list={16:0}, malloc(sizeof *list)={16:0}] [L565] FCALL list->last = ((void *)0) VAL [list={16:0}, malloc(sizeof *list)={16:0}] [L566] char userInput; VAL [list={16:0}, malloc(sizeof *list)={16:0}] [L568] char userInput = __VERIFIER_nondet_char(); [L569] COND FALSE !((userInput == '<') || (userInput == '>')) VAL [list={16:0}, malloc(sizeof *list)={16:0}, userInput=0] [L572] CALL append(list, userInput) VAL [\old(input)=0, head={16:0}] [L548] EXPR, FCALL malloc(sizeof *node) VAL [\old(input)=0, head={16:0}, head={16:0}, input=0, malloc(sizeof *node)={13:0}] [L548] struct node_t *node = malloc(sizeof *node); VAL [\old(input)=0, head={16:0}, head={16:0}, input=0, malloc(sizeof *node)={13:0}, node={13:0}] [L549] FCALL node->data = input VAL [\old(input)=0, head={16:0}, head={16:0}, input=0, malloc(sizeof *node)={13:0}, node={13:0}] [L550] EXPR, FCALL head->first VAL [\old(input)=0, head={16:0}, head={16:0}, head->first={0:0}, input=0, malloc(sizeof *node)={13:0}, node={13:0}] [L550] head->first == ((void *)0) && head->last == ((void *)0) VAL [\old(input)=0, head={16:0}, head={16:0}, head->first={0:0}, head->first == ((void *)0) && head->last == ((void *)0)=1, input=0, malloc(sizeof *node)={13:0}, node={13:0}] [L550] EXPR, FCALL head->last VAL [\old(input)=0, head={16:0}, head={16:0}, head->first={0:0}, head->first == ((void *)0) && head->last == ((void *)0)=1, head->last={0:0}, input=0, malloc(sizeof *node)={13:0}, node={13:0}] [L550] head->first == ((void *)0) && head->last == ((void *)0) VAL [\old(input)=0, head={16:0}, head={16:0}, head->first={0:0}, head->first == ((void *)0) && head->last == ((void *)0)=1, head->last={0:0}, input=0, malloc(sizeof *node)={13:0}, node={13:0}] [L550] COND TRUE head->first == ((void *)0) && head->last == ((void *)0) [L551] FCALL head->first = node VAL [\old(input)=0, head={16:0}, head={16:0}, input=0, malloc(sizeof *node)={13:0}, node={13:0}] [L552] FCALL head->last= node VAL [\old(input)=0, head={16:0}, head={16:0}, input=0, malloc(sizeof *node)={13:0}, node={13:0}] [L553] FCALL node->prev = ((void *)0) VAL [\old(input)=0, head={16:0}, head={16:0}, input=0, malloc(sizeof *node)={13:0}, node={13:0}] [L554] FCALL node->next = ((void *)0) VAL [\old(input)=0, head={16:0}, head={16:0}, input=0, malloc(sizeof *node)={13:0}, node={13:0}] - StatisticsResult: Ultimate Automizer benchmark data for error location: appendErr0EnsuresViolation CFG has 6 procedures, 197 locations, 6 error locations. UNSAFE Result, 0.1s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 314 SDtfs, 0 SDslu, 78 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=197occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 1278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/split_list_test05_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-23_14-32-00-364.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/split_list_test05_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-23_14-32-00-364.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/split_list_test05_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-23_14-32-00-364.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/split_list_test05_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-23_14-32-00-364.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/split_list_test05_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-23_14-32-00-364.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/split_list_test05_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-23_14-32-00-364.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/split_list_test05_false-valid-deref.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-5-2018-01-23_14-32-00-364.csv Received shutdown request...