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_z3.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-ccafca9-m [2018-02-04 04:52:20,652 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 04:52:20,653 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 04:52:20,666 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 04:52:20,666 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 04:52:20,667 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 04:52:20,667 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 04:52:20,669 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 04:52:20,670 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 04:52:20,671 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 04:52:20,672 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 04:52:20,672 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 04:52:20,673 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 04:52:20,674 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 04:52:20,674 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 04:52:20,676 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 04:52:20,678 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 04:52:20,679 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 04:52:20,680 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 04:52:20,681 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 04:52:20,683 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 04:52:20,687 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 04:52:20,687 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 04:52:20,688 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf [2018-02-04 04:52:20,696 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 04:52:20,697 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 04:52:20,697 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 04:52:20,697 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 04:52:20,698 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 04:52:20,698 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 04:52:20,698 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 04:52:20,698 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 04:52:20,698 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 04:52:20,698 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 04:52:20,698 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 04:52:20,698 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 04:52:20,698 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 04:52:20,698 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-04 04:52:20,699 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 04:52:20,699 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 04:52:20,699 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 04:52:20,699 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 04:52:20,699 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 04:52:20,699 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 04:52:20,699 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 04:52:20,699 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 04:52:20,699 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 04:52:20,700 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 04:52:20,700 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:52:20,725 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 04:52:20,733 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 04:52:20,736 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 04:52:20,737 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 04:52:20,737 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 04:52:20,738 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test4_true-valid-memsafety_true-termination.i [2018-02-04 04:52:20,878 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 04:52:20,879 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 04:52:20,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 04:52:20,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 04:52:20,885 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 04:52:20,886 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:52:20" (1/1) ... [2018-02-04 04:52:20,889 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d135a4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:20, skipping insertion in model container [2018-02-04 04:52:20,889 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 04:52:20" (1/1) ... [2018-02-04 04:52:20,903 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:52:20,940 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 04:52:21,029 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:52:21,039 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 04:52:21,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:21 WrapperNode [2018-02-04 04:52:21,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 04:52:21,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 04:52:21,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 04:52:21,044 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 04:52:21,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:21" (1/1) ... [2018-02-04 04:52:21,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:21" (1/1) ... [2018-02-04 04:52:21,060 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:21" (1/1) ... [2018-02-04 04:52:21,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:21" (1/1) ... [2018-02-04 04:52:21,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:21" (1/1) ... [2018-02-04 04:52:21,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:21" (1/1) ... [2018-02-04 04:52:21,064 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:21" (1/1) ... [2018-02-04 04:52:21,065 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 04:52:21,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 04:52:21,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 04:52:21,066 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 04:52:21,067 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:21" (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 04:52:21,104 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 04:52:21,104 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 04:52:21,104 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-04 04:52:21,104 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-04 04:52:21,104 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 04:52:21,104 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 04:52:21,105 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 04:52:21,105 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 04:52:21,105 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 04:52:21,105 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 04:52:21,105 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 04:52:21,105 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-04 04:52:21,105 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-04 04:52:21,105 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 04:52:21,106 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 04:52:21,106 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 04:52:21,208 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 04:52:21,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:52:21 BoogieIcfgContainer [2018-02-04 04:52:21,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 04:52:21,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 04:52:21,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 04:52:21,211 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 04:52:21,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 04:52:20" (1/3) ... [2018-02-04 04:52:21,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3a30ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:52:21, skipping insertion in model container [2018-02-04 04:52:21,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 04:52:21" (2/3) ... [2018-02-04 04:52:21,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f3a30ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 04:52:21, skipping insertion in model container [2018-02-04 04:52:21,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 04:52:21" (3/3) ... [2018-02-04 04:52:21,214 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test4_true-valid-memsafety_true-termination.i [2018-02-04 04:52:21,220 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 04:52:21,226 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-02-04 04:52:21,252 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 04:52:21,252 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 04:52:21,252 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 04:52:21,252 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 04:52:21,252 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 04:52:21,252 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 04:52:21,253 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 04:52:21,253 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 04:52:21,253 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 04:52:21,262 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-02-04 04:52:21,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-02-04 04:52:21,271 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:21,272 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:52:21,272 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-02-04 04:52:21,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1042309263, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:52:21,292 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:21,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:21,406 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 04:52:21,428 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:21,429 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-04 04:52:21,429 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:21,430 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 04:52:21,430 INFO L182 omatonBuilderFactory]: Interpolants [48#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 33#true, 49#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 34#false, 38#(= |#valid| |old(#valid)|)] [2018-02-04 04:52:21,430 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 04:52:21,431 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-04 04:52:21,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-04 04:52:21,440 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-04 04:52:21,441 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2018-02-04 04:52:21,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:21,566 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2018-02-04 04:52:21,566 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 04:52:21,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2018-02-04 04:52:21,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:21,575 INFO L225 Difference]: With dead ends: 43 [2018-02-04 04:52:21,575 INFO L226 Difference]: Without dead ends: 36 [2018-02-04 04:52:21,577 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-02-04 04:52:21,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-02-04 04:52:21,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 31. [2018-02-04 04:52:21,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-02-04 04:52:21,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2018-02-04 04:52:21,609 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 16 [2018-02-04 04:52:21,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:21,609 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2018-02-04 04:52:21,609 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-04 04:52:21,609 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2018-02-04 04:52:21,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-04 04:52:21,611 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:21,611 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 04:52:21,611 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-02-04 04:52:21,611 INFO L82 PathProgramCache]: Analyzing trace with hash -96589069, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:52:21,615 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:21,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:21,737 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 04:52:21,766 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:21,766 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-04 04:52:21,767 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:21,767 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 04:52:21,767 INFO L182 omatonBuilderFactory]: Interpolants [130#true, 146#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 131#false, 147#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 154#(not (= 0 |entry_point_#t~ret2.base|)), 155#(not (= 0 entry_point_~p~0.base)), 156#(not (= 0 |ldv_malloc_#t~malloc1.base|)), 157#(not (= 0 |ldv_malloc_#res.base|))] [2018-02-04 04:52:21,767 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 04:52:21,769 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:52:21,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:52:21,769 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:52:21,769 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 8 states. [2018-02-04 04:52:21,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:21,905 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2018-02-04 04:52:21,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:52:21,905 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2018-02-04 04:52:21,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:21,906 INFO L225 Difference]: With dead ends: 44 [2018-02-04 04:52:21,906 INFO L226 Difference]: Without dead ends: 44 [2018-02-04 04:52:21,907 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-02-04 04:52:21,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-02-04 04:52:21,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 27. [2018-02-04 04:52:21,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2018-02-04 04:52:21,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2018-02-04 04:52:21,911 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 18 [2018-02-04 04:52:21,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:21,912 INFO L432 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2018-02-04 04:52:21,912 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:52:21,912 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2018-02-04 04:52:21,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:52:21,913 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:21,913 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 04:52:21,913 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-02-04 04:52:21,913 INFO L82 PathProgramCache]: Analyzing trace with hash 220833638, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:52:21,935 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:21,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:21,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:21,979 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 04:52:21,995 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:21,995 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 04:52:21,995 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:21,996 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 04:52:21,996 INFO L182 omatonBuilderFactory]: Interpolants [247#(= 0 |entry_point_#t~ret3.offset|), 248#(= 0 entry_point_~q~0.offset), 249#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 234#true, 250#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 235#false, 251#(= 0 |ldv_malloc_#res.offset|)] [2018-02-04 04:52:21,996 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 04:52:21,997 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:52:21,997 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:52:21,997 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:52:21,997 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 7 states. [2018-02-04 04:52:22,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:22,111 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2018-02-04 04:52:22,112 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:52:22,112 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-02-04 04:52:22,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:22,113 INFO L225 Difference]: With dead ends: 38 [2018-02-04 04:52:22,113 INFO L226 Difference]: Without dead ends: 38 [2018-02-04 04:52:22,113 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-02-04 04:52:22,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-02-04 04:52:22,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2018-02-04 04:52:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-02-04 04:52:22,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2018-02-04 04:52:22,117 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 20 [2018-02-04 04:52:22,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:22,117 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2018-02-04 04:52:22,118 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:52:22,118 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2018-02-04 04:52:22,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-02-04 04:52:22,118 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:22,118 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 04:52:22,118 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-02-04 04:52:22,119 INFO L82 PathProgramCache]: Analyzing trace with hash 220833639, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:52:22,124 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,170 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 04:52:22,201 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:22,201 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 04:52:22,202 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:22,202 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 04:52:22,202 INFO L182 omatonBuilderFactory]: Interpolants [343#(= 0 |entry_point_#t~ret3.base|), 344#(= 0 entry_point_~q~0.base), 345#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 330#true, 346#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 331#false, 347#(= 0 |ldv_malloc_#res.base|)] [2018-02-04 04:52:22,202 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 04:52:22,202 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:52:22,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:52:22,203 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:52:22,203 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 7 states. [2018-02-04 04:52:22,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:22,359 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-02-04 04:52:22,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:52:22,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-02-04 04:52:22,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:22,361 INFO L225 Difference]: With dead ends: 44 [2018-02-04 04:52:22,361 INFO L226 Difference]: Without dead ends: 44 [2018-02-04 04:52:22,361 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-02-04 04:52:22,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-02-04 04:52:22,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2018-02-04 04:52:22,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-02-04 04:52:22,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2018-02-04 04:52:22,366 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 20 [2018-02-04 04:52:22,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:22,366 INFO L432 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2018-02-04 04:52:22,366 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:52:22,367 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2018-02-04 04:52:22,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-04 04:52:22,367 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:22,367 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:52:22,367 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-02-04 04:52:22,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1744091818, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:52:22,373 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:22,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,423 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 04:52:22,438 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-04 04:52:22,438 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-02-04 04:52:22,439 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:22,439 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 04:52:22,439 INFO L182 omatonBuilderFactory]: Interpolants [432#true, 448#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 433#false, 449#(= 0 |ldv_malloc_#res.offset|), 441#(= 0 |entry_point_#t~ret2.offset|), 442#(= 0 entry_point_~p~0.offset), 447#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))] [2018-02-04 04:52:22,439 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 04:52:22,439 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:52:22,439 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:52:22,439 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:52:22,439 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 7 states. [2018-02-04 04:52:22,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:22,515 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2018-02-04 04:52:22,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:52:22,515 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-02-04 04:52:22,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:22,516 INFO L225 Difference]: With dead ends: 42 [2018-02-04 04:52:22,516 INFO L226 Difference]: Without dead ends: 42 [2018-02-04 04:52:22,516 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-02-04 04:52:22,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-02-04 04:52:22,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2018-02-04 04:52:22,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-02-04 04:52:22,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-02-04 04:52:22,519 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 21 [2018-02-04 04:52:22,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:22,519 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-02-04 04:52:22,519 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:52:22,519 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2018-02-04 04:52:22,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-04 04:52:22,519 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:22,519 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 04:52:22,519 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-02-04 04:52:22,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1744091817, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:52:22,522 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,561 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 04:52:22,577 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-04 04:52:22,577 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2018-02-04 04:52:22,577 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:22,578 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 04:52:22,578 INFO L182 omatonBuilderFactory]: Interpolants [549#(= 0 |entry_point_#t~ret2.base|), 550#(= 0 entry_point_~p~0.base), 555#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 540#true, 556#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 541#false, 557#(= 0 |ldv_malloc_#res.base|)] [2018-02-04 04:52:22,578 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 04:52:22,578 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:52:22,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:52:22,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:52:22,578 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 7 states. [2018-02-04 04:52:22,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:22,641 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2018-02-04 04:52:22,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-04 04:52:22,642 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-02-04 04:52:22,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:22,642 INFO L225 Difference]: With dead ends: 43 [2018-02-04 04:52:22,642 INFO L226 Difference]: Without dead ends: 43 [2018-02-04 04:52:22,642 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-02-04 04:52:22,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-02-04 04:52:22,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39. [2018-02-04 04:52:22,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-02-04 04:52:22,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2018-02-04 04:52:22,645 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 21 [2018-02-04 04:52:22,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:22,645 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2018-02-04 04:52:22,645 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:52:22,645 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2018-02-04 04:52:22,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 04:52:22,646 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:22,646 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 04:52:22,646 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-02-04 04:52:22,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1015269020, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:52:22,648 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,696 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 04:52:22,715 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 04:52:22,715 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 04:52:22,715 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:52:22,716 INFO L182 omatonBuilderFactory]: Interpolants [664#(= 0 |entry_point_#t~ret3.offset|), 649#true, 665#(= 0 entry_point_~q~0.offset), 650#false, 666#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 667#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 668#(= 0 |ldv_malloc_#t~malloc1.offset|), 669#(= 0 |ldv_malloc_#res.offset|)] [2018-02-04 04:52:22,716 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 04:52:22,716 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:52:22,716 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:52:22,716 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:52:22,716 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 8 states. [2018-02-04 04:52:22,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:22,810 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2018-02-04 04:52:22,810 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-04 04:52:22,810 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2018-02-04 04:52:22,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:22,811 INFO L225 Difference]: With dead ends: 38 [2018-02-04 04:52:22,811 INFO L226 Difference]: Without dead ends: 38 [2018-02-04 04:52:22,811 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-02-04 04:52:22,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-02-04 04:52:22,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-02-04 04:52:22,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-02-04 04:52:22,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2018-02-04 04:52:22,813 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 22 [2018-02-04 04:52:22,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:22,813 INFO L432 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2018-02-04 04:52:22,813 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:52:22,813 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2018-02-04 04:52:22,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-02-04 04:52:22,814 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:22,814 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 04:52:22,814 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-02-04 04:52:22,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1015269019, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:52:22,816 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,863 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 04:52:22,880 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-04 04:52:22,880 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-02-04 04:52:22,880 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:52:22,880 INFO L182 omatonBuilderFactory]: Interpolants [768#(and (= entry_point_~p~0.offset 0) (= entry_point_~p~0.base 0)), 758#true, 759#false, 775#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 776#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 777#(and (= 0 |ldv_malloc_#res.offset|) (= 0 |ldv_malloc_#res.base|)), 767#(and (= 0 |entry_point_#t~ret2.offset|) (= 0 |entry_point_#t~ret2.base|))] [2018-02-04 04:52:22,880 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 04:52:22,881 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 04:52:22,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 04:52:22,881 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-04 04:52:22,881 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 7 states. [2018-02-04 04:52:22,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:22,937 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2018-02-04 04:52:22,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 04:52:22,937 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-02-04 04:52:22,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:22,937 INFO L225 Difference]: With dead ends: 32 [2018-02-04 04:52:22,937 INFO L226 Difference]: Without dead ends: 30 [2018-02-04 04:52:22,938 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-02-04 04:52:22,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-02-04 04:52:22,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2018-02-04 04:52:22,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-02-04 04:52:22,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2018-02-04 04:52:22,941 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 22 [2018-02-04 04:52:22,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:22,941 INFO L432 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2018-02-04 04:52:22,941 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 04:52:22,941 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2018-02-04 04:52:22,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-04 04:52:22,941 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:22,942 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] [2018-02-04 04:52:22,942 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-02-04 04:52:22,942 INFO L82 PathProgramCache]: Analyzing trace with hash -102655212, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:52:22,944 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:22,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:22,975 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 04:52:22,992 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-02-04 04:52:22,992 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-02-04 04:52:22,992 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 04:52:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-02-04 04:52:22,992 INFO L182 omatonBuilderFactory]: Interpolants [850#true, 851#false, 867#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)), 868#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 869#(= 0 |ldv_malloc_#t~malloc1.offset|), 870#(= 0 |ldv_malloc_#res.offset|), 861#(= 0 |entry_point_#t~ret2.offset|), 862#(= 0 entry_point_~p~0.offset)] [2018-02-04 04:52:22,993 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 04:52:22,993 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 04:52:22,993 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 04:52:22,993 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-02-04 04:52:22,993 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 8 states. [2018-02-04 04:52:23,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 04:52:23,059 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2018-02-04 04:52:23,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 04:52:23,059 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-02-04 04:52:23,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 04:52:23,059 INFO L225 Difference]: With dead ends: 29 [2018-02-04 04:52:23,059 INFO L226 Difference]: Without dead ends: 29 [2018-02-04 04:52:23,060 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-02-04 04:52:23,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2018-02-04 04:52:23,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2018-02-04 04:52:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-02-04 04:52:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2018-02-04 04:52:23,062 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 23 [2018-02-04 04:52:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 04:52:23,062 INFO L432 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2018-02-04 04:52:23,062 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 04:52:23,062 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2018-02-04 04:52:23,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-04 04:52:23,062 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 04:52:23,062 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] [2018-02-04 04:52:23,062 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0EnsuresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, entry_pointErr2RequiresViolation, entry_pointErr3RequiresViolation]=== [2018-02-04 04:52:23,062 INFO L82 PathProgramCache]: Analyzing trace with hash -102655211, now seen corresponding path program 1 times No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 04:52:23,066 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 04:52:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 04:52:23,088 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier Unsupported proof rule: (rewrite (= (or false (= |old(#valid)_15| |#valid_21|)) (= |old(#valid)_15| |#valid_21|))) [2018-02-04 04:52:23,089 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: line 115 column 556: theory not supported by interpolation or bad proof at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:206) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseInterpolants(Executor.java:255) at de.uni_freiburg.informatik.ultimate.smtsolver.external.ScriptorWithGetInterpolants.readInterpolants(ScriptorWithGetInterpolants.java:136) at de.uni_freiburg.informatik.ultimate.smtsolver.external.ScriptorWithGetInterpolants.getInterpolants(ScriptorWithGetInterpolants.java:64) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.arrays.DiffWrapperScript.getInterpolants(DiffWrapperScript.java:260) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:186) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:196) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.FixedTraceAbstractionRefinementStrategy.getTraceCheck(FixedTraceAbstractionRefinementStrategy.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:397) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-02-04 04:52:23,091 INFO L168 Benchmark]: Toolchain (without parser) took 2212.45 ms. Allocated memory was 396.9 MB in the beginning and 607.1 MB in the end (delta: 210.2 MB). Free memory was 353.6 MB in the beginning and 400.6 MB in the end (delta: -47.0 MB). Peak memory consumption was 163.2 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:23,092 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 396.9 MB. Free memory is still 358.9 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 04:52:23,092 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.86 ms. Allocated memory is still 396.9 MB. Free memory was 353.6 MB in the beginning and 340.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:23,092 INFO L168 Benchmark]: Boogie Preprocessor took 21.07 ms. Allocated memory is still 396.9 MB. Free memory was 340.4 MB in the beginning and 337.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:23,092 INFO L168 Benchmark]: RCFGBuilder took 143.25 ms. Allocated memory is still 396.9 MB. Free memory was 337.7 MB in the beginning and 323.2 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:23,093 INFO L168 Benchmark]: TraceAbstraction took 1881.39 ms. Allocated memory was 396.9 MB in the beginning and 607.1 MB in the end (delta: 210.2 MB). Free memory was 323.2 MB in the beginning and 400.6 MB in the end (delta: -77.4 MB). Peak memory consumption was 132.8 MB. Max. memory is 5.3 GB. [2018-02-04 04:52:23,095 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 396.9 MB. Free memory is still 358.9 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 163.86 ms. Allocated memory is still 396.9 MB. Free memory was 353.6 MB in the beginning and 340.4 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 21.07 ms. Allocated memory is still 396.9 MB. Free memory was 340.4 MB in the beginning and 337.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 143.25 ms. Allocated memory is still 396.9 MB. Free memory was 337.7 MB in the beginning and 323.2 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1881.39 ms. Allocated memory was 396.9 MB in the beginning and 607.1 MB in the end (delta: 210.2 MB). Free memory was 323.2 MB in the beginning and 400.6 MB in the end (delta: -77.4 MB). Peak memory consumption was 132.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: line 115 column 556: theory not supported by interpolation or bad proof de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: line 115 column 556: theory not supported by interpolation or bad proof: de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1420) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test4_true-valid-memsafety_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_04-52-23-102.csv Received shutdown request...