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_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 22:07:32,725 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 22:07:32,726 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 22:07:32,741 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 22:07:32,741 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 22:07:32,742 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 22:07:32,743 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 22:07:32,745 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 22:07:32,747 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 22:07:32,748 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 22:07:32,749 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2018-01-20 22:07:32,768 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 22:07:32,768 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 22:07:32,769 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 [2018-01-20 22:07:32,778 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 22:07:32,778 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 22:07:32,779 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 22:07:32,779 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 22:07:32,779 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 22:07:32,779 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 22:07:32,779 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 22:07:32,780 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 22:07:32,780 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 22:07:32,780 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 22:07:32,780 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 22:07:32,780 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 22:07:32,780 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 22:07:32,780 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 22:07:32,781 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 22:07:32,781 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 22:07:32,781 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 22:07:32,781 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 22:07:32,781 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 22:07:32,781 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 22:07:32,781 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 22:07:32,782 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 22:07:32,782 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 22:07:32,782 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 22:07:32,782 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 22:07:32,782 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 22:07:32,783 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 22:07:32,783 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 22:07:32,783 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 22:07:32,783 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 22:07:32,783 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 22:07:32,783 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-20 22:07:32,783 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 22:07:32,783 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 22:07:32,783 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 22:07:32,784 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 22:07:32,784 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 22:07:32,816 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 22:07:32,827 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 22:07:32,830 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 22:07:32,831 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 22:07:32,831 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 22:07:32,832 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety-ext2/split_list_test05_true-valid-memsafety.i [2018-01-20 22:07:33,004 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 22:07:33,008 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 22:07:33,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 22:07:33,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 22:07:33,014 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 22:07:33,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 10:07:32" (1/1) ... [2018-01-20 22:07:33,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31d50c5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:33, skipping insertion in model container [2018-01-20 22:07:33,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 10:07:32" (1/1) ... [2018-01-20 22:07:33,030 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 22:07:33,069 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 22:07:33,199 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 22:07:33,229 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 22:07:33,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:33 WrapperNode [2018-01-20 22:07:33,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 22:07:33,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 22:07:33,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 22:07:33,245 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 22:07:33,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:33" (1/1) ... [2018-01-20 22:07:33,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:33" (1/1) ... [2018-01-20 22:07:33,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:33" (1/1) ... [2018-01-20 22:07:33,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:33" (1/1) ... [2018-01-20 22:07:33,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:33" (1/1) ... [2018-01-20 22:07:33,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:33" (1/1) ... [2018-01-20 22:07:33,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:33" (1/1) ... [2018-01-20 22:07:33,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 22:07:33,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 22:07:33,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 22:07:33,296 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 22:07:33,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:33" (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 [2018-01-20 22:07:33,357 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 22:07:33,358 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 22:07:33,358 INFO L136 BoogieDeclarations]: Found implementation of procedure containsHead [2018-01-20 22:07:33,358 INFO L136 BoogieDeclarations]: Found implementation of procedure containsBody [2018-01-20 22:07:33,358 INFO L136 BoogieDeclarations]: Found implementation of procedure append [2018-01-20 22:07:33,358 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 22:07:33,359 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-20 22:07:33,359 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-20 22:07:33,359 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 22:07:33,359 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 22:07:33,359 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 22:07:33,359 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 22:07:33,359 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 22:07:33,360 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-20 22:07:33,360 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2018-01-20 22:07:33,360 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 22:07:33,360 INFO L128 BoogieDeclarations]: Found specification of procedure containsHead [2018-01-20 22:07:33,360 INFO L128 BoogieDeclarations]: Found specification of procedure containsBody [2018-01-20 22:07:33,360 INFO L128 BoogieDeclarations]: Found specification of procedure append [2018-01-20 22:07:33,361 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 22:07:33,361 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 22:07:33,361 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 22:07:33,944 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 22:07:33,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 10:07:33 BoogieIcfgContainer [2018-01-20 22:07:33,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 22:07:33,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 22:07:33,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 22:07:33,949 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 22:07:33,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 10:07:32" (1/3) ... [2018-01-20 22:07:33,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416d962a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 10:07:33, skipping insertion in model container [2018-01-20 22:07:33,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 10:07:33" (2/3) ... [2018-01-20 22:07:33,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@416d962a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 10:07:33, skipping insertion in model container [2018-01-20 22:07:33,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 10:07:33" (3/3) ... [2018-01-20 22:07:33,954 INFO L105 eAbstractionObserver]: Analyzing ICFG split_list_test05_true-valid-memsafety.i [2018-01-20 22:07:33,963 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 22:07:33,972 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-01-20 22:07:34,022 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:07:34,022 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:07:34,023 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:07:34,023 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:07:34,023 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:07:34,023 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:07:34,023 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:07:34,023 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 22:07:34,024 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:07:34,049 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2018-01-20 22:07:34,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 22:07:34,055 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:34,056 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 22:07:34,056 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 22:07:34,061 INFO L82 PathProgramCache]: Analyzing trace with hash 425556, now seen corresponding path program 1 times [2018-01-20 22:07:34,062 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:34,063 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:34,115 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:34,115 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:34,115 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 22:07:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 22:07:34,183 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 22:07:34,191 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 22:07:34,200 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:07:34,200 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:07:34,201 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:07:34,201 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:07:34,201 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:07:34,217 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:07:34,218 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:07:34,218 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == containsHeadErr0EnsuresViolation======== [2018-01-20 22:07:34,218 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:07:34,224 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2018-01-20 22:07:34,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2018-01-20 22:07:34,244 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:34,244 INFO L322 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:34,244 INFO L371 AbstractCegarLoop]: === Iteration 1 === [containsHeadErr0EnsuresViolation]=== [2018-01-20 22:07:34,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1454005036, now seen corresponding path program 1 times [2018-01-20 22:07:34,245 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:34,245 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:34,246 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:34,246 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:34,246 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:34,380 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:34,614 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2018-01-20 22:07:34,617 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:34,617 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 22:07:34,619 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 22:07:34,633 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 22:07:34,634 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 22:07:34,637 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 2 states. [2018-01-20 22:07:34,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:34,682 INFO L93 Difference]: Finished difference Result 383 states and 479 transitions. [2018-01-20 22:07:34,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 22:07:34,684 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 213 [2018-01-20 22:07:34,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:34,692 INFO L225 Difference]: With dead ends: 383 [2018-01-20 22:07:34,692 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 22:07:34,700 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 [2018-01-20 22:07:34,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 22:07:34,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 22:07:34,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 22:07:34,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 22:07:34,727 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 213 [2018-01-20 22:07:34,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:34,727 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 22:07:34,727 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 22:07:34,727 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 22:07:34,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 22:07:34,730 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:07:34,731 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:07:34,731 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:07:34,731 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:07:34,731 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:07:34,731 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:07:34,731 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:07:34,731 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == containsBodyErr0EnsuresViolation======== [2018-01-20 22:07:34,732 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:07:34,735 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2018-01-20 22:07:34,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2018-01-20 22:07:34,743 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:34,743 INFO L322 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:34,743 INFO L371 AbstractCegarLoop]: === Iteration 1 === [containsBodyErr0EnsuresViolation]=== [2018-01-20 22:07:34,744 INFO L82 PathProgramCache]: Analyzing trace with hash -2074036853, now seen corresponding path program 1 times [2018-01-20 22:07:34,744 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:34,744 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:34,745 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:34,745 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:34,745 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:34,773 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:34,898 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2018-01-20 22:07:34,898 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:34,898 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 22:07:34,899 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 22:07:34,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 22:07:34,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 22:07:34,900 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 2 states. [2018-01-20 22:07:34,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:34,922 INFO L93 Difference]: Finished difference Result 383 states and 479 transitions. [2018-01-20 22:07:34,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 22:07:34,922 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 216 [2018-01-20 22:07:34,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:34,922 INFO L225 Difference]: With dead ends: 383 [2018-01-20 22:07:34,923 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 22:07:34,925 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 [2018-01-20 22:07:34,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 22:07:34,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 22:07:34,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 22:07:34,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 22:07:34,926 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 216 [2018-01-20 22:07:34,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:34,927 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 22:07:34,927 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 22:07:34,927 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 22:07:34,927 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 22:07:34,929 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:07:34,929 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:07:34,930 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:07:34,930 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:07:34,930 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:07:34,930 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:07:34,930 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:07:34,930 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 22:07:34,930 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:07:34,933 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2018-01-20 22:07:34,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-01-20 22:07:34,938 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:34,938 INFO L322 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:34,939 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:07:34,939 INFO L82 PathProgramCache]: Analyzing trace with hash -1555624233, now seen corresponding path program 1 times [2018-01-20 22:07:34,939 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:34,939 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:34,940 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:34,940 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:34,941 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:34,963 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:35,083 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2018-01-20 22:07:35,083 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:35,083 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 22:07:35,084 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 22:07:35,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 22:07:35,084 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 22:07:35,084 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 2 states. [2018-01-20 22:07:35,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:35,099 INFO L93 Difference]: Finished difference Result 383 states and 479 transitions. [2018-01-20 22:07:35,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 22:07:35,100 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 209 [2018-01-20 22:07:35,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:35,107 INFO L225 Difference]: With dead ends: 383 [2018-01-20 22:07:35,108 INFO L226 Difference]: Without dead ends: 192 [2018-01-20 22:07:35,109 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 [2018-01-20 22:07:35,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-20 22:07:35,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2018-01-20 22:07:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2018-01-20 22:07:35,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 228 transitions. [2018-01-20 22:07:35,140 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 228 transitions. Word has length 209 [2018-01-20 22:07:35,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:35,140 INFO L432 AbstractCegarLoop]: Abstraction has 192 states and 228 transitions. [2018-01-20 22:07:35,140 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 22:07:35,140 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 228 transitions. [2018-01-20 22:07:35,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-01-20 22:07:35,148 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:35,148 INFO L322 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:35,148 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:07:35,149 INFO L82 PathProgramCache]: Analyzing trace with hash -258479386, now seen corresponding path program 1 times [2018-01-20 22:07:35,149 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:35,149 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:35,150 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:35,150 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:35,150 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:35,178 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:35,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1470 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 1372 trivial. 0 not checked. [2018-01-20 22:07:35,330 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:35,330 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 [2018-01-20 22:07:35,351 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:35,629 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:35,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1470 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2018-01-20 22:07:35,711 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-20 22:07:35,711 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2018-01-20 22:07:35,713 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 22:07:35,713 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 22:07:35,713 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 22:07:35,714 INFO L87 Difference]: Start difference. First operand 192 states and 228 transitions. Second operand 3 states. [2018-01-20 22:07:35,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:35,743 INFO L93 Difference]: Finished difference Result 375 states and 463 transitions. [2018-01-20 22:07:35,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 22:07:35,744 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 305 [2018-01-20 22:07:35,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:35,747 INFO L225 Difference]: With dead ends: 375 [2018-01-20 22:07:35,747 INFO L226 Difference]: Without dead ends: 193 [2018-01-20 22:07:35,749 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 306 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 22:07:35,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2018-01-20 22:07:35,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2018-01-20 22:07:35,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2018-01-20 22:07:35,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 229 transitions. [2018-01-20 22:07:35,767 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 229 transitions. Word has length 305 [2018-01-20 22:07:35,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:35,768 INFO L432 AbstractCegarLoop]: Abstraction has 193 states and 229 transitions. [2018-01-20 22:07:35,768 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 22:07:35,768 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 229 transitions. [2018-01-20 22:07:35,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2018-01-20 22:07:35,770 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:35,770 INFO L322 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:35,771 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 22:07:35,771 INFO L82 PathProgramCache]: Analyzing trace with hash 111351389, now seen corresponding path program 1 times [2018-01-20 22:07:35,771 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:35,771 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:35,772 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:35,772 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:35,772 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:35,808 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 1456 trivial. 0 not checked. [2018-01-20 22:07:36,055 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:36,083 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 [2018-01-20 22:07:36,089 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:36,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:36,306 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:36,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1680 trivial. 0 not checked. [2018-01-20 22:07:36,507 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-20 22:07:36,507 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-01-20 22:07:36,508 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 22:07:36,508 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 22:07:36,508 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-20 22:07:36,509 INFO L87 Difference]: Start difference. First operand 193 states and 229 transitions. Second operand 5 states. [2018-01-20 22:07:36,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:36,543 INFO L93 Difference]: Finished difference Result 221 states and 261 transitions. [2018-01-20 22:07:36,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 22:07:36,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 335 [2018-01-20 22:07:36,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:36,544 INFO L225 Difference]: With dead ends: 221 [2018-01-20 22:07:36,544 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 22:07:36,545 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-20 22:07:36,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 22:07:36,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 22:07:36,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 22:07:36,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 22:07:36,546 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 335 [2018-01-20 22:07:36,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:36,547 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 22:07:36,547 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 22:07:36,547 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 22:07:36,547 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 22:07:36,549 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:07:36,549 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:07:36,549 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:07:36,549 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:07:36,549 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:07:36,550 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:07:36,550 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:07:36,550 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 22:07:36,550 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:07:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2018-01-20 22:07:36,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-01-20 22:07:36,555 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:36,556 INFO L322 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:36,556 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-20 22:07:36,556 INFO L82 PathProgramCache]: Analyzing trace with hash 2031898526, now seen corresponding path program 1 times [2018-01-20 22:07:36,556 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:36,557 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:36,558 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:36,558 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:36,558 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:36,577 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:36,649 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2018-01-20 22:07:36,649 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:36,649 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 22:07:36,649 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 22:07:36,650 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 22:07:36,650 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 22:07:36,650 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 2 states. [2018-01-20 22:07:36,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:36,662 INFO L93 Difference]: Finished difference Result 383 states and 479 transitions. [2018-01-20 22:07:36,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 22:07:36,662 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 207 [2018-01-20 22:07:36,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:36,664 INFO L225 Difference]: With dead ends: 383 [2018-01-20 22:07:36,664 INFO L226 Difference]: Without dead ends: 190 [2018-01-20 22:07:36,666 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 [2018-01-20 22:07:36,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2018-01-20 22:07:36,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2018-01-20 22:07:36,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2018-01-20 22:07:36,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 226 transitions. [2018-01-20 22:07:36,679 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 226 transitions. Word has length 207 [2018-01-20 22:07:36,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:36,679 INFO L432 AbstractCegarLoop]: Abstraction has 190 states and 226 transitions. [2018-01-20 22:07:36,680 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 22:07:36,680 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 226 transitions. [2018-01-20 22:07:36,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2018-01-20 22:07:36,683 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:36,683 INFO L322 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:36,683 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-20 22:07:36,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1438835565, now seen corresponding path program 1 times [2018-01-20 22:07:36,684 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:36,684 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:36,684 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:36,685 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:36,685 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:36,710 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:36,831 INFO L134 CoverageAnalysis]: Checked inductivity of 1470 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 1372 trivial. 0 not checked. [2018-01-20 22:07:36,832 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:36,832 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 [2018-01-20 22:07:36,839 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:37,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:37,042 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:37,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1470 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2018-01-20 22:07:37,145 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-20 22:07:37,145 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2018-01-20 22:07:37,146 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 22:07:37,146 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 22:07:37,146 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 22:07:37,146 INFO L87 Difference]: Start difference. First operand 190 states and 226 transitions. Second operand 3 states. [2018-01-20 22:07:37,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:37,185 INFO L93 Difference]: Finished difference Result 371 states and 459 transitions. [2018-01-20 22:07:37,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 22:07:37,185 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 303 [2018-01-20 22:07:37,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:37,187 INFO L225 Difference]: With dead ends: 371 [2018-01-20 22:07:37,187 INFO L226 Difference]: Without dead ends: 191 [2018-01-20 22:07:37,188 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 22:07:37,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2018-01-20 22:07:37,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2018-01-20 22:07:37,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2018-01-20 22:07:37,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 227 transitions. [2018-01-20 22:07:37,200 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 227 transitions. Word has length 303 [2018-01-20 22:07:37,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:37,200 INFO L432 AbstractCegarLoop]: Abstraction has 191 states and 227 transitions. [2018-01-20 22:07:37,200 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 22:07:37,200 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 227 transitions. [2018-01-20 22:07:37,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2018-01-20 22:07:37,203 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:37,204 INFO L322 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 22:07:37,204 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-20 22:07:37,204 INFO L82 PathProgramCache]: Analyzing trace with hash 885031076, now seen corresponding path program 1 times [2018-01-20 22:07:37,204 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:37,204 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:37,205 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:37,205 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:37,205 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:37,236 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:37,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 0 proven. 224 refuted. 0 times theorem prover too weak. 1456 trivial. 0 not checked. [2018-01-20 22:07:37,466 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 22:07:37,466 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 [2018-01-20 22:07:37,474 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:37,695 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 22:07:37,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1680 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1680 trivial. 0 not checked. [2018-01-20 22:07:37,848 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-20 22:07:37,849 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-01-20 22:07:37,850 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 22:07:37,850 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 22:07:37,850 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-20 22:07:37,850 INFO L87 Difference]: Start difference. First operand 191 states and 227 transitions. Second operand 5 states. [2018-01-20 22:07:37,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:37,904 INFO L93 Difference]: Finished difference Result 219 states and 259 transitions. [2018-01-20 22:07:37,904 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 22:07:37,905 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2018-01-20 22:07:37,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:37,905 INFO L225 Difference]: With dead ends: 219 [2018-01-20 22:07:37,905 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 22:07:37,906 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 333 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-20 22:07:37,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 22:07:37,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 22:07:37,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 22:07:37,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 22:07:37,907 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 333 [2018-01-20 22:07:37,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:37,907 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 22:07:37,908 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 22:07:37,908 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 22:07:37,908 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 22:07:37,909 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 22:07:37,910 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 22:07:37,910 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 22:07:37,910 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 22:07:37,910 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 22:07:37,910 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 22:07:37,910 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 22:07:37,910 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == appendErr0EnsuresViolation======== [2018-01-20 22:07:37,910 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 22:07:37,912 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states. [2018-01-20 22:07:37,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-20 22:07:37,913 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:37,913 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] [2018-01-20 22:07:37,913 INFO L371 AbstractCegarLoop]: === Iteration 1 === [appendErr0EnsuresViolation]=== [2018-01-20 22:07:37,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1646960005, now seen corresponding path program 1 times [2018-01-20 22:07:37,913 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:37,914 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:37,914 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:37,915 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:37,915 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:37,920 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:37,925 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:37,925 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-20 22:07:37,925 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-20 22:07:37,926 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-20 22:07:37,926 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-20 22:07:37,926 INFO L87 Difference]: Start difference. First operand 198 states. Second operand 2 states. [2018-01-20 22:07:37,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:37,936 INFO L93 Difference]: Finished difference Result 383 states and 479 transitions. [2018-01-20 22:07:37,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-20 22:07:37,936 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2018-01-20 22:07:37,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:37,937 INFO L225 Difference]: With dead ends: 383 [2018-01-20 22:07:37,937 INFO L226 Difference]: Without dead ends: 65 [2018-01-20 22:07:37,938 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 [2018-01-20 22:07:37,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-01-20 22:07:37,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-01-20 22:07:37,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-20 22:07:37,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 86 transitions. [2018-01-20 22:07:37,945 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 86 transitions. Word has length 25 [2018-01-20 22:07:37,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:37,945 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 86 transitions. [2018-01-20 22:07:37,945 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-20 22:07:37,945 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 86 transitions. [2018-01-20 22:07:37,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-20 22:07:37,946 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:37,946 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] [2018-01-20 22:07:37,946 INFO L371 AbstractCegarLoop]: === Iteration 2 === [appendErr0EnsuresViolation]=== [2018-01-20 22:07:37,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1878605164, now seen corresponding path program 1 times [2018-01-20 22:07:37,946 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:37,946 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:37,947 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:37,947 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:37,947 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 22:07:37,955 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-20 22:07:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 22:07:37,991 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 22:07:37,991 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-20 22:07:37,992 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-20 22:07:37,992 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-20 22:07:37,992 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-20 22:07:37,992 INFO L87 Difference]: Start difference. First operand 65 states and 86 transitions. Second operand 3 states. [2018-01-20 22:07:38,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 22:07:38,024 INFO L93 Difference]: Finished difference Result 121 states and 179 transitions. [2018-01-20 22:07:38,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-20 22:07:38,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-01-20 22:07:38,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 22:07:38,025 INFO L225 Difference]: With dead ends: 121 [2018-01-20 22:07:38,026 INFO L226 Difference]: Without dead ends: 66 [2018-01-20 22:07:38,027 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 [2018-01-20 22:07:38,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-01-20 22:07:38,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2018-01-20 22:07:38,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-01-20 22:07:38,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 87 transitions. [2018-01-20 22:07:38,032 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 87 transitions. Word has length 27 [2018-01-20 22:07:38,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 22:07:38,032 INFO L432 AbstractCegarLoop]: Abstraction has 66 states and 87 transitions. [2018-01-20 22:07:38,033 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-20 22:07:38,033 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 87 transitions. [2018-01-20 22:07:38,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-01-20 22:07:38,033 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 22:07:38,033 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] [2018-01-20 22:07:38,033 INFO L371 AbstractCegarLoop]: === Iteration 3 === [appendErr0EnsuresViolation]=== [2018-01-20 22:07:38,034 INFO L82 PathProgramCache]: Analyzing trace with hash 190058321, now seen corresponding path program 1 times [2018-01-20 22:07:38,034 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 22:07:38,034 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 22:07:38,034 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:38,035 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 22:07:38,035 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 22:07:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 22:07:38,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 22:07:38,075 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 22:07:38,083 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 22:07:38,088 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 22:07:38,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 10:07:38 BoogieIcfgContainer [2018-01-20 22:07:38,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 22:07:38,104 INFO L168 Benchmark]: Toolchain (without parser) took 5099.08 ms. Allocated memory was 305.1 MB in the beginning and 718.3 MB in the end (delta: 413.1 MB). Free memory was 262.5 MB in the beginning and 646.5 MB in the end (delta: -384.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 5.3 GB. [2018-01-20 22:07:38,105 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 305.1 MB. Free memory is still 268.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 22:07:38,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.84 ms. Allocated memory is still 305.1 MB. Free memory was 262.5 MB in the beginning and 250.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-20 22:07:38,106 INFO L168 Benchmark]: Boogie Preprocessor took 50.63 ms. Allocated memory is still 305.1 MB. Free memory was 250.5 MB in the beginning and 246.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 5.3 GB. [2018-01-20 22:07:38,106 INFO L168 Benchmark]: RCFGBuilder took 650.27 ms. Allocated memory is still 305.1 MB. Free memory was 246.5 MB in the beginning and 199.6 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 5.3 GB. [2018-01-20 22:07:38,106 INFO L168 Benchmark]: TraceAbstraction took 4156.29 ms. Allocated memory was 305.1 MB in the beginning and 718.3 MB in the end (delta: 413.1 MB). Free memory was 199.6 MB in the beginning and 646.5 MB in the end (delta: -446.9 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 22:07:38,108 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 305.1 MB. Free memory is still 268.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 234.84 ms. Allocated memory is still 305.1 MB. Free memory was 262.5 MB in the beginning and 250.5 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 50.63 ms. Allocated memory is still 305.1 MB. Free memory was 250.5 MB in the beginning and 246.5 MB in the end (delta: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 650.27 ms. Allocated memory is still 305.1 MB. Free memory was 246.5 MB in the beginning and 199.6 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 4156.29 ms. Allocated memory was 305.1 MB in the beginning and 718.3 MB in the end (delta: 413.1 MB). Free memory was 199.6 MB in the beginning and 646.5 MB in the end (delta: -446.9 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - 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, 198 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=198occurred 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, 198 locations, 6 error locations. SAFE Result, 0.5s OverallTime, 1 OverallIterations, 12 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 232 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=198occurred 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, 213 NumberOfCodeBlocks, 213 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 212 ConstructedInterpolants, 0 QuantifiedInterpolants, 44944 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 924/924 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, 198 locations, 6 error locations. SAFE Result, 0.1s OverallTime, 1 OverallIterations, 12 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 232 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=198occurred 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, 216 NumberOfCodeBlocks, 216 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 215 ConstructedInterpolants, 0 QuantifiedInterpolants, 46225 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 924/924 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, 198 locations, 6 error locations. SAFE Result, 1.6s OverallTime, 3 OverallIterations, 15 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 495 SDtfs, 18 SDslu, 289 SDs, 0 SdLazy, 22 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 647 GetRequests, 643 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred 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, 1489 NumberOfCodeBlocks, 1489 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1484 ConstructedInterpolants, 0 QuantifiedInterpolants, 467514 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2169 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 6902/7224 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, 198 locations, 6 error locations. SAFE Result, 1.3s OverallTime, 3 OverallIterations, 15 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 493 SDtfs, 18 SDslu, 287 SDs, 0 SdLazy, 22 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 643 GetRequests, 639 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred 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, 0.5s InterpolantComputationTime, 1479 NumberOfCodeBlocks, 1479 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1474 ConstructedInterpolants, 0 QuantifiedInterpolants, 461500 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2163 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 6902/7224 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, 198 locations, 6 error locations. UNSAFE Result, 0.1s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 317 SDtfs, 0 SDslu, 80 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=198occurred 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_true-valid-memsafety.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-20_22-07-38-118.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/split_list_test05_true-valid-memsafety.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-20_22-07-38-118.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/split_list_test05_true-valid-memsafety.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-20_22-07-38-118.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/split_list_test05_true-valid-memsafety.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-20_22-07-38-118.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/split_list_test05_true-valid-memsafety.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-3-2018-01-20_22-07-38-118.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/split_list_test05_true-valid-memsafety.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-4-2018-01-20_22-07-38-118.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/split_list_test05_true-valid-memsafety.i_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-5-2018-01-20_22-07-38-118.csv Received shutdown request...