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/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf -i ../../../trunk/examples/svcomp/list-properties/splice_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-26d9e06-m [2018-02-02 10:49:19,865 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 10:49:19,866 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 10:49:19,876 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 10:49:19,876 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 10:49:19,877 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 10:49:19,878 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 10:49:19,879 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 10:49:19,880 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 10:49:19,881 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 10:49:19,882 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 10:49:19,882 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 10:49:19,883 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 10:49:19,884 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 10:49:19,885 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 10:49:19,886 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 10:49:19,889 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 10:49:19,890 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 10:49:19,891 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 10:49:19,892 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 10:49:19,894 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-02 10:49:19,898 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 10:49:19,899 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 10:49:19,899 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cav18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf [2018-02-02 10:49:19,909 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 10:49:19,909 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 10:49:19,910 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 10:49:19,910 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 10:49:19,910 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 10:49:19,911 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 10:49:19,911 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 10:49:19,911 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 10:49:19,911 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 10:49:19,911 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 10:49:19,911 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 10:49:19,912 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 10:49:19,912 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 10:49:19,912 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 10:49:19,912 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 10:49:19,912 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 10:49:19,912 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 10:49:19,913 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 10:49:19,913 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 10:49:19,913 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 10:49:19,913 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 10:49:19,913 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 10:49:19,913 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_TreeInterpolation [2018-02-02 10:49:19,913 INFO L133 SettingsManager]: * SMT solver=Internal_SMTInterpol_NoArrayInterpol [2018-02-02 10:49:19,941 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 10:49:19,950 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 10:49:19,954 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 10:49:19,955 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 10:49:19,956 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 10:49:19,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice_true-unreach-call_false-valid-memtrack.i [2018-02-02 10:49:20,073 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 10:49:20,074 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 10:49:20,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 10:49:20,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 10:49:20,080 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 10:49:20,081 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 10:49:20" (1/1) ... [2018-02-02 10:49:20,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@708086ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:49:20, skipping insertion in model container [2018-02-02 10:49:20,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 10:49:20" (1/1) ... [2018-02-02 10:49:20,097 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 10:49:20,128 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 10:49:20,227 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 10:49:20,244 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 10:49:20,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:49:20 WrapperNode [2018-02-02 10:49:20,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 10:49:20,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 10:49:20,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 10:49:20,252 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 10:49:20,263 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:49:20" (1/1) ... [2018-02-02 10:49:20,263 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:49:20" (1/1) ... [2018-02-02 10:49:20,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:49:20" (1/1) ... [2018-02-02 10:49:20,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:49:20" (1/1) ... [2018-02-02 10:49:20,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:49:20" (1/1) ... [2018-02-02 10:49:20,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:49:20" (1/1) ... [2018-02-02 10:49:20,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:49:20" (1/1) ... [2018-02-02 10:49:20,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 10:49:20,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 10:49:20,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 10:49:20,283 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 10:49:20,284 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:49:20" (1/1) ... No working directory specified, using /home/ultimate/work/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 [2018-02-02 10:49:20,323 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 10:49:20,323 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 10:49:20,324 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-02-02 10:49:20,324 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 10:49:20,324 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 10:49:20,324 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 10:49:20,324 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-02 10:49:20,324 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-02 10:49:20,324 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 10:49:20,325 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 10:49:20,325 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 10:49:20,325 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-02-02 10:49:20,325 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 10:49:20,325 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-02 10:49:20,325 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-02-02 10:49:20,325 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 10:49:20,325 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 10:49:20,326 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 10:49:20,606 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 10:49:20,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 10:49:20 BoogieIcfgContainer [2018-02-02 10:49:20,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 10:49:20,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 10:49:20,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 10:49:20,610 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 10:49:20,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 10:49:20" (1/3) ... [2018-02-02 10:49:20,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b69ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 10:49:20, skipping insertion in model container [2018-02-02 10:49:20,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 10:49:20" (2/3) ... [2018-02-02 10:49:20,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67b69ab3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 10:49:20, skipping insertion in model container [2018-02-02 10:49:20,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 10:49:20" (3/3) ... [2018-02-02 10:49:20,613 INFO L107 eAbstractionObserver]: Analyzing ICFG splice_true-unreach-call_false-valid-memtrack.i [2018-02-02 10:49:20,620 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_TreeInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-02 10:49:20,625 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 29 error locations. [2018-02-02 10:49:20,657 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 10:49:20,657 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 10:49:20,658 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_TreeInterpolation [2018-02-02 10:49:20,658 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-02 10:49:20,658 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 10:49:20,658 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 10:49:20,658 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 10:49:20,659 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 10:49:20,660 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 10:49:20,676 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states. [2018-02-02 10:49:20,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-02-02 10:49:20,685 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:49:20,686 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:49:20,686 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-02-02 10:49:20,690 INFO L82 PathProgramCache]: Analyzing trace with hash 26423453, now seen corresponding path program 1 times [2018-02-02 10:49:20,740 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:49:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:49:20,785 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:49:20,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:49:20,815 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:49:20,816 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 10:49:20,816 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:49:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:49:20,818 INFO L182 omatonBuilderFactory]: Interpolants [93#true, 94#false] [2018-02-02 10:49:20,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:49:20,819 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-02-02 10:49:20,829 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-02-02 10:49:20,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-02-02 10:49:20,831 INFO L87 Difference]: Start difference. First operand 90 states. Second operand 2 states. [2018-02-02 10:49:20,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:49:20,849 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2018-02-02 10:49:20,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-02-02 10:49:20,850 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-02-02 10:49:20,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:49:20,855 INFO L225 Difference]: With dead ends: 90 [2018-02-02 10:49:20,856 INFO L226 Difference]: Without dead ends: 82 [2018-02-02 10:49:20,857 INFO L554 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 [2018-02-02 10:49:20,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-02-02 10:49:20,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2018-02-02 10:49:20,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-02-02 10:49:20,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 88 transitions. [2018-02-02 10:49:20,944 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 88 transitions. Word has length 12 [2018-02-02 10:49:20,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:49:20,944 INFO L432 AbstractCegarLoop]: Abstraction has 82 states and 88 transitions. [2018-02-02 10:49:20,945 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-02-02 10:49:20,945 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 88 transitions. [2018-02-02 10:49:20,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 10:49:20,945 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:49:20,945 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:49:20,945 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-02-02 10:49:20,946 INFO L82 PathProgramCache]: Analyzing trace with hash -378065087, now seen corresponding path program 1 times [2018-02-02 10:49:20,946 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:49:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:49:20,956 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:49:21,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:49:21,001 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:49:21,001 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 10:49:21,002 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:49:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:49:21,002 INFO L182 omatonBuilderFactory]: Interpolants [267#true, 268#false, 269#(= 1 (select |#valid| |main_#t~malloc0.base|)), 270#(= 1 (select |#valid| main_~a~0.base)), 271#(= 1 (select |#valid| main_~p~0.base))] [2018-02-02 10:49:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:49:21,004 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 10:49:21,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 10:49:21,005 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 10:49:21,005 INFO L87 Difference]: Start difference. First operand 82 states and 88 transitions. Second operand 5 states. [2018-02-02 10:49:21,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:49:21,173 INFO L93 Difference]: Finished difference Result 91 states and 98 transitions. [2018-02-02 10:49:21,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 10:49:21,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-02-02 10:49:21,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:49:21,174 INFO L225 Difference]: With dead ends: 91 [2018-02-02 10:49:21,175 INFO L226 Difference]: Without dead ends: 91 [2018-02-02 10:49:21,175 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-02-02 10:49:21,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-02-02 10:49:21,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2018-02-02 10:49:21,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-02-02 10:49:21,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2018-02-02 10:49:21,182 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 14 [2018-02-02 10:49:21,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:49:21,182 INFO L432 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2018-02-02 10:49:21,182 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 10:49:21,182 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2018-02-02 10:49:21,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 10:49:21,183 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:49:21,183 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:49:21,183 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-02-02 10:49:21,183 INFO L82 PathProgramCache]: Analyzing trace with hash -378065086, now seen corresponding path program 1 times [2018-02-02 10:49:21,184 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:49:21,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 10:49:21,202 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 10:49:21,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:49:21,266 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 10:49:21,266 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 10:49:21,266 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-02 10:49:21,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:49:21,266 INFO L182 omatonBuilderFactory]: Interpolants [452#true, 453#false, 454#(and (= 8 (select |#length| |main_#t~malloc0.base|)) (= 0 |main_#t~malloc0.offset|)), 455#(and (= 8 (select |#length| main_~a~0.base)) (= 0 main_~a~0.offset)), 456#(and (= (select |#length| main_~p~0.base) 8) (= main_~p~0.offset 0))] [2018-02-02 10:49:21,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 10:49:21,267 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 10:49:21,267 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 10:49:21,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 10:49:21,267 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand 5 states. [2018-02-02 10:49:21,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 10:49:21,405 INFO L93 Difference]: Finished difference Result 100 states and 109 transitions. [2018-02-02 10:49:21,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 10:49:21,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-02-02 10:49:21,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 10:49:21,406 INFO L225 Difference]: With dead ends: 100 [2018-02-02 10:49:21,406 INFO L226 Difference]: Without dead ends: 100 [2018-02-02 10:49:21,407 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-02-02 10:49:21,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-02-02 10:49:21,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2018-02-02 10:49:21,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-02-02 10:49:21,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2018-02-02 10:49:21,412 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 14 [2018-02-02 10:49:21,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 10:49:21,413 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2018-02-02 10:49:21,413 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 10:49:21,413 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2018-02-02 10:49:21,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-02 10:49:21,413 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 10:49:21,413 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 10:49:21,413 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr28EnsuresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-02-02 10:49:21,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1532728651, now seen corresponding path program 1 times [2018-02-02 10:49:21,414 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-02 10:49:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 10:49:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 10:49:21,453 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-02 10:49:21,461 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-02-02 10:49:21,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 10:49:21 BoogieIcfgContainer [2018-02-02 10:49:21,473 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 10:49:21,474 INFO L168 Benchmark]: Toolchain (without parser) took 1400.43 ms. Allocated memory was 402.1 MB in the beginning and 608.7 MB in the end (delta: 206.6 MB). Free memory was 359.0 MB in the beginning and 514.6 MB in the end (delta: -155.6 MB). Peak memory consumption was 50.9 MB. Max. memory is 5.3 GB. [2018-02-02 10:49:21,475 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 402.1 MB. Free memory is still 365.6 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 10:49:21,475 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.22 ms. Allocated memory is still 402.1 MB. Free memory was 359.0 MB in the beginning and 348.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. [2018-02-02 10:49:21,475 INFO L168 Benchmark]: Boogie Preprocessor took 30.05 ms. Allocated memory is still 402.1 MB. Free memory was 348.4 MB in the beginning and 345.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-02 10:49:21,476 INFO L168 Benchmark]: RCFGBuilder took 324.44 ms. Allocated memory is still 402.1 MB. Free memory was 345.8 MB in the beginning and 318.2 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 5.3 GB. [2018-02-02 10:49:21,476 INFO L168 Benchmark]: TraceAbstraction took 865.48 ms. Allocated memory was 402.1 MB in the beginning and 608.7 MB in the end (delta: 206.6 MB). Free memory was 318.2 MB in the beginning and 514.6 MB in the end (delta: -196.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-02-02 10:49:21,478 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 402.1 MB. Free memory is still 365.6 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 177.22 ms. Allocated memory is still 402.1 MB. Free memory was 359.0 MB in the beginning and 348.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.05 ms. Allocated memory is still 402.1 MB. Free memory was 348.4 MB in the beginning and 345.8 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 324.44 ms. Allocated memory is still 402.1 MB. Free memory was 345.8 MB in the beginning and 318.2 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 865.48 ms. Allocated memory was 402.1 MB in the beginning and 608.7 MB in the end (delta: 206.6 MB). Free memory was 318.2 MB in the beginning and 514.6 MB in the end (delta: -196.5 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] int flag = 1; VAL [flag=1] [L628] EXPR, FCALL malloc(sizeof(struct node)) VAL [flag=1, malloc(sizeof(struct node))={12:0}] [L628] List a = (List) malloc(sizeof(struct node)); VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}] [L629] COND FALSE !(a == 0) VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}] [L630] List t; [L631] List l1; [L632] List l2; [L633] List b; [L634] List u; [L635] List p = a; VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}] [L636] COND FALSE !(__VERIFIER_nondet_int()) [L649] FCALL p->h = 3 VAL [a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}] [L650] EXPR, FCALL a->h VAL [a={12:0}, a->h=3, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}] [L650] COND TRUE a->h == 3 [L650] return 0; VAL [\result=0, a={12:0}, flag=1, malloc(sizeof(struct node))={12:0}, p={12:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 92 locations, 29 error locations. UNSAFE Result, 0.8s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 189 SDtfs, 426 SDslu, 74 SDs, 0 SdLazy, 155 SolverSat, 38 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=3, 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, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 1551 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/splice_true-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_10-49-21-484.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/splice_true-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_10-49-21-484.csv Received shutdown request...