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/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i
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This is Ultimate 0.1.23-ccafca9-m
[2018-02-04 00:41:27,165 INFO L170 SettingsManager]: Resetting all preferences to default values...
[2018-02-04 00:41:27,167 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values
[2018-02-04 00:41:27,178 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-02-04 00:41:27,178 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-02-04 00:41:27,179 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-02-04 00:41:27,180 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-02-04 00:41:27,181 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values
[2018-02-04 00:41:27,182 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-02-04 00:41:27,183 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-02-04 00:41:27,184 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-02-04 00:41:27,184 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-02-04 00:41:27,185 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-02-04 00:41:27,186 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-02-04 00:41:27,186 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-02-04 00:41:27,188 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-02-04 00:41:27,190 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values
[2018-02-04 00:41:27,191 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-02-04 00:41:27,192 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-02-04 00:41:27,193 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-02-04 00:41:27,194 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-02-04 00:41:27,195 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-02-04 00:41:27,195 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-02-04 00:41:27,196 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values
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[2018-02-04 00:41:27,197 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-02-04 00:41:27,198 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values
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[2018-02-04 00:41:27,199 INFO L181 SettingsManager]: Finished resetting all preferences to default values...
[2018-02-04 00:41:27,199 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf
[2018-02-04 00:41:27,209 INFO L110 SettingsManager]: Loading preferences was successful
[2018-02-04 00:41:27,209 INFO L112 SettingsManager]: Preferences different from defaults after loading the file:
[2018-02-04 00:41:27,210 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-02-04 00:41:27,210 INFO L133 SettingsManager]: * Create parallel compositions if possible=false
[2018-02-04 00:41:27,211 INFO L133 SettingsManager]: * Use SBE=true
[2018-02-04 00:41:27,211 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-02-04 00:41:27,211 INFO L133 SettingsManager]: * sizeof long=4
[2018-02-04 00:41:27,211 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2018-02-04 00:41:27,211 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true
[2018-02-04 00:41:27,211 INFO L133 SettingsManager]: * sizeof POINTER=4
[2018-02-04 00:41:27,212 INFO L133 SettingsManager]: * Check division by zero=IGNORE
[2018-02-04 00:41:27,212 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2018-02-04 00:41:27,212 INFO L133 SettingsManager]: * Bitprecise bitfields=true
[2018-02-04 00:41:27,212 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2018-02-04 00:41:27,212 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-02-04 00:41:27,212 INFO L133 SettingsManager]: * sizeof long double=12
[2018-02-04 00:41:27,212 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-02-04 00:41:27,213 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements
[2018-02-04 00:41:27,213 INFO L133 SettingsManager]: * To the following directory=./dump/
[2018-02-04 00:41:27,213 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode
[2018-02-04 00:41:27,213 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-02-04 00:41:27,213 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-02-04 00:41:27,213 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK
[2018-02-04 00:41:27,214 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2018-02-04 00:41:27,214 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL
[2018-02-04 00:41:27,242 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2018-02-04 00:41:27,252 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized
[2018-02-04 00:41:27,255 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected.
[2018-02-04 00:41:27,256 INFO L271 PluginConnector]: Initializing CDTParser...
[2018-02-04 00:41:27,256 INFO L276 PluginConnector]: CDTParser initialized
[2018-02-04 00:41:27,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_false-valid-memtrack_true-termination.i
[2018-02-04 00:41:27,410 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-02-04 00:41:27,411 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2018-02-04 00:41:27,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-02-04 00:41:27,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-02-04 00:41:27,418 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized
[2018-02-04 00:41:27,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 12:41:27" (1/1) ...
[2018-02-04 00:41:27,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@581e1694 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:41:27, skipping insertion in model container
[2018-02-04 00:41:27,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 12:41:27" (1/1) ...
[2018-02-04 00:41:27,436 INFO L153 Dispatcher]: Using SV-COMP mode
[2018-02-04 00:41:27,472 INFO L153 Dispatcher]: Using SV-COMP mode
[2018-02-04 00:41:27,550 INFO L450 PostProcessor]: Settings: Checked method=main
[2018-02-04 00:41:27,560 INFO L450 PostProcessor]: Settings: Checked method=main
[2018-02-04 00:41:27,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:41:27 WrapperNode
[2018-02-04 00:41:27,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-02-04 00:41:27,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-02-04 00:41:27,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2018-02-04 00:41:27,565 INFO L276 PluginConnector]: Boogie Preprocessor initialized
[2018-02-04 00:41:27,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:41:27" (1/1) ...
[2018-02-04 00:41:27,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:41:27" (1/1) ...
[2018-02-04 00:41:27,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:41:27" (1/1) ...
[2018-02-04 00:41:27,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:41:27" (1/1) ...
[2018-02-04 00:41:27,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:41:27" (1/1) ...
[2018-02-04 00:41:27,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:41:27" (1/1) ...
[2018-02-04 00:41:27,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:41:27" (1/1) ...
[2018-02-04 00:41:27,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-02-04 00:41:27,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-02-04 00:41:27,588 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2018-02-04 00:41:27,589 INFO L276 PluginConnector]: RCFGBuilder initialized
[2018-02-04 00:41:27,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:41:27" (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
[2018-02-04 00:41:27,624 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-02-04 00:41:27,625 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-02-04 00:41:27,625 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc
[2018-02-04 00:41:27,625 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point
[2018-02-04 00:41:27,625 INFO L136 BoogieDeclarations]: Found implementation of procedure main
[2018-02-04 00:41:27,625 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free
[2018-02-04 00:41:27,625 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2018-02-04 00:41:27,625 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc
[2018-02-04 00:41:27,625 INFO L128 BoogieDeclarations]: Found specification of procedure malloc
[2018-02-04 00:41:27,625 INFO L128 BoogieDeclarations]: Found specification of procedure free
[2018-02-04 00:41:27,625 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2018-02-04 00:41:27,625 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc
[2018-02-04 00:41:27,625 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point
[2018-02-04 00:41:27,625 INFO L128 BoogieDeclarations]: Found specification of procedure main
[2018-02-04 00:41:27,626 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-02-04 00:41:27,626 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-02-04 00:41:27,715 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-02-04 00:41:27,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 12:41:27 BoogieIcfgContainer
[2018-02-04 00:41:27,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-02-04 00:41:27,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-02-04 00:41:27,716 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2018-02-04 00:41:27,718 INFO L276 PluginConnector]: TraceAbstraction initialized
[2018-02-04 00:41:27,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 12:41:27" (1/3) ...
[2018-02-04 00:41:27,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b5e358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 12:41:27, skipping insertion in model container
[2018-02-04 00:41:27,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 12:41:27" (2/3) ...
[2018-02-04 00:41:27,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b5e358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 12:41:27, skipping insertion in model container
[2018-02-04 00:41:27,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 12:41:27" (3/3) ...
[2018-02-04 00:41:27,720 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test4_false-valid-memtrack_true-termination.i
[2018-02-04 00:41:27,726 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-02-04 00:41:27,731 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations.
[2018-02-04 00:41:27,764 INFO L322 AbstractCegarLoop]: Interprodecural is true
[2018-02-04 00:41:27,765 INFO L323 AbstractCegarLoop]: Hoare is false
[2018-02-04 00:41:27,765 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-02-04 00:41:27,765 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK
[2018-02-04 00:41:27,765 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-02-04 00:41:27,765 INFO L327 AbstractCegarLoop]: Difference is false
[2018-02-04 00:41:27,765 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-02-04 00:41:27,766 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-02-04 00:41:27,766 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure
[2018-02-04 00:41:27,777 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states.
[2018-02-04 00:41:27,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2018-02-04 00:41:27,786 INFO L343 BasicCegarLoop]: Found error trace
[2018-02-04 00:41:27,787 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-02-04 00:41:27,787 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]===
[2018-02-04 00:41:27,791 INFO L82 PathProgramCache]: Analyzing trace with hash -1713265670, now seen corresponding path program 1 times
[2018-02-04 00:41:27,793 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-02-04 00:41:27,793 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-02-04 00:41:27,844 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-02-04 00:41:27,844 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-02-04 00:41:27,845 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-02-04 00:41:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-02-04 00:41:27,889 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-02-04 00:41:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-02-04 00:41:27,946 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-02-04 00:41:27,946 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-02-04 00:41:27,948 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-02-04 00:41:27,958 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-02-04 00:41:27,959 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-02-04 00:41:27,961 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 3 states.
[2018-02-04 00:41:28,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-02-04 00:41:28,046 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions.
[2018-02-04 00:41:28,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2018-02-04 00:41:28,087 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16
[2018-02-04 00:41:28,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-02-04 00:41:28,095 INFO L225 Difference]: With dead ends: 39
[2018-02-04 00:41:28,095 INFO L226 Difference]: Without dead ends: 33
[2018-02-04 00:41:28,096 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-02-04 00:41:28,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2018-02-04 00:41:28,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28.
[2018-02-04 00:41:28,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-02-04 00:41:28,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions.
[2018-02-04 00:41:28,122 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 16
[2018-02-04 00:41:28,122 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-02-04 00:41:28,122 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions.
[2018-02-04 00:41:28,122 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-02-04 00:41:28,122 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions.
[2018-02-04 00:41:28,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2018-02-04 00:41:28,123 INFO L343 BasicCegarLoop]: Found error trace
[2018-02-04 00:41:28,123 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-02-04 00:41:28,123 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]===
[2018-02-04 00:41:28,123 INFO L82 PathProgramCache]: Analyzing trace with hash 295629500, now seen corresponding path program 1 times
[2018-02-04 00:41:28,124 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-02-04 00:41:28,124 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-02-04 00:41:28,125 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-02-04 00:41:28,125 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-02-04 00:41:28,125 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-02-04 00:41:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-02-04 00:41:28,138 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-02-04 00:41:28,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-02-04 00:41:28,180 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-02-04 00:41:28,180 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2018-02-04 00:41:28,182 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-02-04 00:41:28,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-02-04 00:41:28,182 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2018-02-04 00:41:28,182 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 6 states.
[2018-02-04 00:41:28,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-02-04 00:41:28,203 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions.
[2018-02-04 00:41:28,203 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2018-02-04 00:41:28,203 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18
[2018-02-04 00:41:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-02-04 00:41:28,204 INFO L225 Difference]: With dead ends: 35
[2018-02-04 00:41:28,204 INFO L226 Difference]: Without dead ends: 35
[2018-02-04 00:41:28,205 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2018-02-04 00:41:28,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-02-04 00:41:28,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24.
[2018-02-04 00:41:28,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-02-04 00:41:28,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions.
[2018-02-04 00:41:28,209 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 18
[2018-02-04 00:41:28,209 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-02-04 00:41:28,209 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions.
[2018-02-04 00:41:28,209 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-02-04 00:41:28,209 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions.
[2018-02-04 00:41:28,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2018-02-04 00:41:28,210 INFO L343 BasicCegarLoop]: Found error trace
[2018-02-04 00:41:28,210 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-02-04 00:41:28,210 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]===
[2018-02-04 00:41:28,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1865005914, now seen corresponding path program 1 times
[2018-02-04 00:41:28,210 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-02-04 00:41:28,210 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-02-04 00:41:28,211 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-02-04 00:41:28,212 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-02-04 00:41:28,212 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-02-04 00:41:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-02-04 00:41:28,223 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-02-04 00:41:28,253 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2018-02-04 00:41:28,253 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-02-04 00:41:28,254 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-02-04 00:41:28,254 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-02-04 00:41:28,254 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-02-04 00:41:28,254 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-02-04 00:41:28,254 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states.
[2018-02-04 00:41:28,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-02-04 00:41:28,271 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions.
[2018-02-04 00:41:28,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2018-02-04 00:41:28,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20
[2018-02-04 00:41:28,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-02-04 00:41:28,272 INFO L225 Difference]: With dead ends: 29
[2018-02-04 00:41:28,272 INFO L226 Difference]: Without dead ends: 29
[2018-02-04 00:41:28,273 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-02-04 00:41:28,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2018-02-04 00:41:28,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28.
[2018-02-04 00:41:28,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-02-04 00:41:28,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions.
[2018-02-04 00:41:28,277 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 20
[2018-02-04 00:41:28,277 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-02-04 00:41:28,277 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions.
[2018-02-04 00:41:28,277 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-02-04 00:41:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions.
[2018-02-04 00:41:28,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2018-02-04 00:41:28,278 INFO L343 BasicCegarLoop]: Found error trace
[2018-02-04 00:41:28,278 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-02-04 00:41:28,278 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]===
[2018-02-04 00:41:28,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1865005913, now seen corresponding path program 1 times
[2018-02-04 00:41:28,278 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-02-04 00:41:28,278 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-02-04 00:41:28,280 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-02-04 00:41:28,280 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-02-04 00:41:28,280 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-02-04 00:41:28,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-02-04 00:41:28,291 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-02-04 00:41:28,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2018-02-04 00:41:28,322 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-02-04 00:41:28,322 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-02-04 00:41:28,322 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-02-04 00:41:28,322 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-02-04 00:41:28,322 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-02-04 00:41:28,323 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states.
[2018-02-04 00:41:28,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-02-04 00:41:28,336 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions.
[2018-02-04 00:41:28,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2018-02-04 00:41:28,336 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20
[2018-02-04 00:41:28,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-02-04 00:41:28,337 INFO L225 Difference]: With dead ends: 30
[2018-02-04 00:41:28,337 INFO L226 Difference]: Without dead ends: 30
[2018-02-04 00:41:28,338 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-02-04 00:41:28,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2018-02-04 00:41:28,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28.
[2018-02-04 00:41:28,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-02-04 00:41:28,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions.
[2018-02-04 00:41:28,341 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20
[2018-02-04 00:41:28,341 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-02-04 00:41:28,341 INFO L432 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions.
[2018-02-04 00:41:28,341 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-02-04 00:41:28,342 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions.
[2018-02-04 00:41:28,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2018-02-04 00:41:28,342 INFO L343 BasicCegarLoop]: Found error trace
[2018-02-04 00:41:28,342 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-02-04 00:41:28,342 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]===
[2018-02-04 00:41:28,343 INFO L82 PathProgramCache]: Analyzing trace with hash 245416420, now seen corresponding path program 1 times
[2018-02-04 00:41:28,343 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-02-04 00:41:28,343 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-02-04 00:41:28,344 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-02-04 00:41:28,344 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-02-04 00:41:28,344 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-02-04 00:41:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-02-04 00:41:28,356 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-02-04 00:41:28,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2018-02-04 00:41:28,394 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-02-04 00:41:28,395 INFO L213 onRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /home/ultimate/work/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
[2018-02-04 00:41:28,404 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-02-04 00:41:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-02-04 00:41:28,435 INFO L270 TraceCheckSpWp]: Computing forward predicates...
[2018-02-04 00:41:28,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2018-02-04 00:41:28,514 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2018-02-04 00:41:28,514 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9
[2018-02-04 00:41:28,515 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-02-04 00:41:28,515 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-02-04 00:41:28,515 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72
[2018-02-04 00:41:28,515 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 9 states.
[2018-02-04 00:41:28,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-02-04 00:41:28,544 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions.
[2018-02-04 00:41:28,546 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2018-02-04 00:41:28,546 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22
[2018-02-04 00:41:28,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-02-04 00:41:28,546 INFO L225 Difference]: With dead ends: 29
[2018-02-04 00:41:28,546 INFO L226 Difference]: Without dead ends: 27
[2018-02-04 00:41:28,547 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90
[2018-02-04 00:41:28,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2018-02-04 00:41:28,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27.
[2018-02-04 00:41:28,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2018-02-04 00:41:28,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions.
[2018-02-04 00:41:28,549 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 22
[2018-02-04 00:41:28,549 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-02-04 00:41:28,549 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions.
[2018-02-04 00:41:28,549 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-02-04 00:41:28,549 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions.
[2018-02-04 00:41:28,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2018-02-04 00:41:28,550 INFO L343 BasicCegarLoop]: Found error trace
[2018-02-04 00:41:28,550 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-02-04 00:41:28,550 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]===
[2018-02-04 00:41:28,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1092908839, now seen corresponding path program 1 times
[2018-02-04 00:41:28,550 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-02-04 00:41:28,550 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-02-04 00:41:28,551 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-02-04 00:41:28,551 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-02-04 00:41:28,551 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-02-04 00:41:28,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-02-04 00:41:28,559 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs.
[2018-02-04 00:41:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2018-02-04 00:41:28,593 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-02-04 00:41:28,593 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-02-04 00:41:28,593 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-02-04 00:41:28,593 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-02-04 00:41:28,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2018-02-04 00:41:28,593 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 6 states.
[2018-02-04 00:41:28,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-02-04 00:41:28,617 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions.
[2018-02-04 00:41:28,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2018-02-04 00:41:28,617 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24
[2018-02-04 00:41:28,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-02-04 00:41:28,618 INFO L225 Difference]: With dead ends: 26
[2018-02-04 00:41:28,618 INFO L226 Difference]: Without dead ends: 26
[2018-02-04 00:41:28,618 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2018-02-04 00:41:28,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2018-02-04 00:41:28,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24.
[2018-02-04 00:41:28,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-02-04 00:41:28,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions.
[2018-02-04 00:41:28,620 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 24
[2018-02-04 00:41:28,621 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-02-04 00:41:28,621 INFO L432 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions.
[2018-02-04 00:41:28,621 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-02-04 00:41:28,621 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions.
[2018-02-04 00:41:28,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2018-02-04 00:41:28,621 INFO L343 BasicCegarLoop]: Found error trace
[2018-02-04 00:41:28,622 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-02-04 00:41:28,622 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation]===
[2018-02-04 00:41:28,622 INFO L82 PathProgramCache]: Analyzing trace with hash -191782558, now seen corresponding path program 1 times
[2018-02-04 00:41:28,622 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-02-04 00:41:28,622 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-02-04 00:41:28,623 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-02-04 00:41:28,623 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-02-04 00:41:28,623 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order
[2018-02-04 00:41:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-02-04 00:41:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2018-02-04 00:41:28,657 INFO L410 BasicCegarLoop]: Counterexample might be feasible
[2018-02-04 00:41:28,665 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true)
[2018-02-04 00:41:28,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 12:41:28 BoogieIcfgContainer
[2018-02-04 00:41:28,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-02-04 00:41:28,674 INFO L168 Benchmark]: Toolchain (without parser) took 1263.39 ms. Allocated memory was 397.9 MB in the beginning and 596.1 MB in the end (delta: 198.2 MB). Free memory was 354.8 MB in the beginning and 488.0 MB in the end (delta: -133.2 MB). Peak memory consumption was 65.0 MB. Max. memory is 5.3 GB.
[2018-02-04 00:41:28,675 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 397.9 MB. Free memory is still 361.4 MB. There was no memory consumed. Max. memory is 5.3 GB.
[2018-02-04 00:41:28,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 152.70 ms. Allocated memory is still 397.9 MB. Free memory was 354.8 MB in the beginning and 341.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB.
[2018-02-04 00:41:28,675 INFO L168 Benchmark]: Boogie Preprocessor took 23.11 ms. Allocated memory is still 397.9 MB. Free memory was 341.6 MB in the beginning and 340.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB.
[2018-02-04 00:41:28,675 INFO L168 Benchmark]: RCFGBuilder took 127.03 ms. Allocated memory is still 397.9 MB. Free memory was 340.3 MB in the beginning and 326.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB.
[2018-02-04 00:41:28,675 INFO L168 Benchmark]: TraceAbstraction took 957.68 ms. Allocated memory was 397.9 MB in the beginning and 596.1 MB in the end (delta: 198.2 MB). Free memory was 326.3 MB in the beginning and 488.0 MB in the end (delta: -161.7 MB). Peak memory consumption was 36.5 MB. Max. memory is 5.3 GB.
[2018-02-04 00:41:28,676 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.15 ms. Allocated memory is still 397.9 MB. Free memory is still 361.4 MB. There was no memory consumed. Max. memory is 5.3 GB.
* CACSL2BoogieTranslator took 152.70 ms. Allocated memory is still 397.9 MB. Free memory was 354.8 MB in the beginning and 341.6 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB.
* Boogie Preprocessor took 23.11 ms. Allocated memory is still 397.9 MB. Free memory was 341.6 MB in the beginning and 340.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB.
* RCFGBuilder took 127.03 ms. Allocated memory is still 397.9 MB. Free memory was 340.3 MB in the beginning and 326.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 5.3 GB.
* TraceAbstraction took 957.68 ms. Allocated memory was 397.9 MB in the beginning and 596.1 MB in the end (delta: 198.2 MB). Free memory was 326.3 MB in the beginning and 488.0 MB in the end (delta: -161.7 MB). Peak memory consumption was 36.5 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: 1443]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: overapproximation of memtrack at line 1443.
Possible FailurePath:
[L1444] CALL entry_point()
[L1435] CALL, EXPR ldv_malloc(sizeof(int))
VAL [\old(size)=4]
[L1073] COND TRUE __VERIFIER_nondet_int()
[L1074] EXPR, FCALL malloc(size)
VAL [\old(size)=4, malloc(size)={6:0}, size=4]
[L1074] RET return malloc(size);
VAL [\old(size)=4, \result={6:0}, malloc(size)={6:0}, size=4]
[L1435] EXPR ldv_malloc(sizeof(int))
VAL [ldv_malloc(sizeof(int))={6:0}]
[L1435] int *p = (int *)ldv_malloc(sizeof(int));
[L1436] COND TRUE \read(*p)
VAL [p={6:0}]
[L1437] CALL, EXPR ldv_malloc(sizeof(int))
VAL [\old(size)=4]
[L1073] COND FALSE !(__VERIFIER_nondet_int())
[L1076] RET return 0;
VAL [\old(size)=4, \result={0:0}, size=4]
[L1437] EXPR ldv_malloc(sizeof(int))
VAL [ldv_malloc(sizeof(int))={0:0}, p={6:0}]
[L1437] int *q = (int *)ldv_malloc(sizeof(int));
[L1438] FCALL free(q)
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 5 procedures, 27 locations, 3 error locations. UNSAFE Result, 0.9s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 145 SDtfs, 26 SDslu, 446 SDs, 0 SdLazy, 116 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=1, 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, 6 MinimizatonAttempts, 21 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 167 NumberOfCodeBlocks, 167 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 135 ConstructedInterpolants, 0 QuantifiedInterpolants, 4710 SizeOfPredicates, 1 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 20/22 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/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_00-41-28-682.csv
Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_00-41-28-682.csv
Received shutdown request...