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_test6_1_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-c17473d-m [2018-02-04 20:46:22,161 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-04 20:46:22,163 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-04 20:46:22,172 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-04 20:46:22,173 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-04 20:46:22,173 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-04 20:46:22,174 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-04 20:46:22,176 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-04 20:46:22,177 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-04 20:46:22,177 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-04 20:46:22,178 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-04 20:46:22,178 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-04 20:46:22,178 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-04 20:46:22,179 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-04 20:46:22,180 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-04 20:46:22,182 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-04 20:46:22,183 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-04 20:46:22,185 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-04 20:46:22,186 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-04 20:46:22,186 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-04 20:46:22,188 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-02-04 20:46:22,192 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-04 20:46:22,192 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-04 20:46:22,192 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 20:46:22,202 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-04 20:46:22,202 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-04 20:46:22,203 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-04 20:46:22,203 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-04 20:46:22,203 INFO L133 SettingsManager]: * Use SBE=true [2018-02-04 20:46:22,203 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-04 20:46:22,203 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-04 20:46:22,204 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-04 20:46:22,204 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-04 20:46:22,204 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-04 20:46:22,204 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-04 20:46:22,204 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-04 20:46:22,204 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-04 20:46:22,204 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-04 20:46:22,205 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-04 20:46:22,205 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-04 20:46:22,205 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-04 20:46:22,205 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-04 20:46:22,205 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-04 20:46:22,205 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-04 20:46:22,206 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-04 20:46:22,206 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2018-02-04 20:46:22,206 INFO L133 SettingsManager]: * SMT solver=External_Z3InterpolationMode [2018-02-04 20:46:22,206 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-02-04 20:46:22,234 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-04 20:46:22,245 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-04 20:46:22,249 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-04 20:46:22,250 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-04 20:46:22,251 INFO L276 PluginConnector]: CDTParser initialized [2018-02-04 20:46:22,251 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test6_1_false-valid-memtrack_true-termination.i [2018-02-04 20:46:22,411 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-04 20:46:22,412 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-04 20:46:22,413 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-04 20:46:22,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-04 20:46:22,418 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-04 20:46:22,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 08:46:22" (1/1) ... [2018-02-04 20:46:22,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fb72e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:46:22, skipping insertion in model container [2018-02-04 20:46:22,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.02 08:46:22" (1/1) ... [2018-02-04 20:46:22,436 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 20:46:22,474 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-04 20:46:22,566 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 20:46:22,577 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-04 20:46:22,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:46:22 WrapperNode [2018-02-04 20:46:22,583 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-04 20:46:22,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-04 20:46:22,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-04 20:46:22,584 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-04 20:46:22,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:46:22" (1/1) ... [2018-02-04 20:46:22,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:46:22" (1/1) ... [2018-02-04 20:46:22,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:46:22" (1/1) ... [2018-02-04 20:46:22,602 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:46:22" (1/1) ... [2018-02-04 20:46:22,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:46:22" (1/1) ... [2018-02-04 20:46:22,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:46:22" (1/1) ... [2018-02-04 20:46:22,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:46:22" (1/1) ... [2018-02-04 20:46:22,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-04 20:46:22,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-04 20:46:22,608 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-04 20:46:22,608 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-04 20:46:22,609 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:46:22" (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 20:46:22,644 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-04 20:46:22,645 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-04 20:46:22,645 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-04 20:46:22,645 INFO L136 BoogieDeclarations]: Found implementation of procedure f6 [2018-02-04 20:46:22,645 INFO L136 BoogieDeclarations]: Found implementation of procedure g6 [2018-02-04 20:46:22,645 INFO L136 BoogieDeclarations]: Found implementation of procedure probe2_6 [2018-02-04 20:46:22,645 INFO L136 BoogieDeclarations]: Found implementation of procedure disconnect_6 [2018-02-04 20:46:22,645 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-04 20:46:22,645 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-04 20:46:22,645 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-04 20:46:22,645 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-04 20:46:22,645 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-04 20:46:22,646 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-04 20:46:22,646 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-04 20:46:22,646 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-04 20:46:22,646 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-04 20:46:22,646 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-04 20:46:22,646 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-04 20:46:22,646 INFO L128 BoogieDeclarations]: Found specification of procedure f6 [2018-02-04 20:46:22,646 INFO L128 BoogieDeclarations]: Found specification of procedure g6 [2018-02-04 20:46:22,646 INFO L128 BoogieDeclarations]: Found specification of procedure probe2_6 [2018-02-04 20:46:22,646 INFO L128 BoogieDeclarations]: Found specification of procedure disconnect_6 [2018-02-04 20:46:22,646 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-04 20:46:22,646 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-04 20:46:22,646 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-04 20:46:22,646 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-04 20:46:22,822 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-04 20:46:22,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 08:46:22 BoogieIcfgContainer [2018-02-04 20:46:22,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-04 20:46:22,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-04 20:46:22,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-04 20:46:22,826 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-04 20:46:22,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.02 08:46:22" (1/3) ... [2018-02-04 20:46:22,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ecd96df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 08:46:22, skipping insertion in model container [2018-02-04 20:46:22,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.02 08:46:22" (2/3) ... [2018-02-04 20:46:22,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ecd96df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.02 08:46:22, skipping insertion in model container [2018-02-04 20:46:22,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.02 08:46:22" (3/3) ... [2018-02-04 20:46:22,828 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test6_1_false-valid-memtrack_true-termination.i [2018-02-04 20:46:22,833 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2018-02-04 20:46:22,837 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2018-02-04 20:46:22,866 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-04 20:46:22,866 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-04 20:46:22,866 INFO L324 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2018-02-04 20:46:22,866 INFO L325 AbstractCegarLoop]: Backedges is CANONICAL [2018-02-04 20:46:22,866 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-04 20:46:22,866 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-04 20:46:22,866 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-04 20:46:22,867 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-04 20:46:22,867 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-04 20:46:22,878 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2018-02-04 20:46:22,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-02-04 20:46:22,885 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:46:22,886 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-02-04 20:46:22,887 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-02-04 20:46:22,891 INFO L82 PathProgramCache]: Analyzing trace with hash 3232357, 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 20:46:22,901 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:46:22,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:22,967 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 20:46:22,985 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:46:22,985 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 20:46:22,986 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:46:22,987 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 20:46:22,987 INFO L182 omatonBuilderFactory]: Interpolants [69#true, 70#false, 71#(= 1 (select |#valid| |~#a6.base|))] [2018-02-04 20:46:22,987 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 20:46:22,988 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-04 20:46:22,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-04 20:46:22,999 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-04 20:46:23,001 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 3 states. [2018-02-04 20:46:23,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:46:23,070 INFO L93 Difference]: Finished difference Result 79 states and 85 transitions. [2018-02-04 20:46:23,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-04 20:46:23,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2018-02-04 20:46:23,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:46:23,082 INFO L225 Difference]: With dead ends: 79 [2018-02-04 20:46:23,082 INFO L226 Difference]: Without dead ends: 76 [2018-02-04 20:46:23,084 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 20:46:23,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-02-04 20:46:23,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2018-02-04 20:46:23,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-02-04 20:46:23,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 73 transitions. [2018-02-04 20:46:23,120 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 73 transitions. Word has length 4 [2018-02-04 20:46:23,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:46:23,120 INFO L432 AbstractCegarLoop]: Abstraction has 67 states and 73 transitions. [2018-02-04 20:46:23,120 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-04 20:46:23,120 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 73 transitions. [2018-02-04 20:46:23,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2018-02-04 20:46:23,120 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:46:23,121 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2018-02-04 20:46:23,121 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-02-04 20:46:23,121 INFO L82 PathProgramCache]: Analyzing trace with hash 3232358, 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 20:46:23,125 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:46:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:23,137 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 20:46:23,141 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:46:23,141 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:46:23,142 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:46:23,143 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:46:23,213 WARN L1033 $PredicateComparison]: unable to prove that (exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store %0 %1 4) (store |c_#length| %1 4)) :qid itp)) :qid itp)) is different from true [2018-02-04 20:46:23,246 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 20:46:23,277 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:46:23,277 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-04 20:46:23,277 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:46:23,277 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 20:46:23,278 INFO L182 omatonBuilderFactory]: Interpolants [218#true, 219#false, 220#(exists ((%0 (Array Int Int))) (! (forall ((%1 Int)) (! (= (store %0 %1 4) (store |#length| %1 4)) :qid itp)) :qid itp)), 221#(and (= 4 (select |#length| |~#a6.base|)) (<= (+ |~#a6.offset| 4) (select |#length| |~#a6.base|)) (<= 0 |~#a6.offset|))] [2018-02-04 20:46:23,278 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 20:46:23,279 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-04 20:46:23,280 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-04 20:46:23,280 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2018-02-04 20:46:23,280 INFO L87 Difference]: Start difference. First operand 67 states and 73 transitions. Second operand 4 states. [2018-02-04 20:46:23,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:46:23,332 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2018-02-04 20:46:23,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-04 20:46:23,332 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2018-02-04 20:46:23,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:46:23,334 INFO L225 Difference]: With dead ends: 116 [2018-02-04 20:46:23,334 INFO L226 Difference]: Without dead ends: 116 [2018-02-04 20:46:23,335 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2018-02-04 20:46:23,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2018-02-04 20:46:23,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 103. [2018-02-04 20:46:23,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-02-04 20:46:23,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 123 transitions. [2018-02-04 20:46:23,343 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 123 transitions. Word has length 4 [2018-02-04 20:46:23,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:46:23,344 INFO L432 AbstractCegarLoop]: Abstraction has 103 states and 123 transitions. [2018-02-04 20:46:23,344 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-04 20:46:23,344 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 123 transitions. [2018-02-04 20:46:23,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-04 20:46:23,345 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:46:23,345 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:46:23,345 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-02-04 20:46:23,345 INFO L82 PathProgramCache]: Analyzing trace with hash -293037669, 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 20:46:23,349 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:46:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:23,452 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 20:46:23,470 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:46:23,470 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-02-04 20:46:23,470 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:46:23,470 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 20:46:23,471 INFO L182 omatonBuilderFactory]: Interpolants [467#(= |probe2_6_#res| 3), 468#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 441#true, 442#false, 458#(= 3 |entry_point_#t~ret9|), 459#(not (= 0 entry_point_~ret~1)), 460#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |~#a6.offset| |old(~#a6.offset)|) (= |old(#length)| |#length|) (= |~#a6.base| |old(~#a6.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)), 461#(and (= |#valid| |old(#valid)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)), 462#(= 3 probe2_6_~ret~0)] [2018-02-04 20:46:23,471 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 20:46:23,471 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 20:46:23,471 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 20:46:23,471 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-02-04 20:46:23,472 INFO L87 Difference]: Start difference. First operand 103 states and 123 transitions. Second operand 9 states. [2018-02-04 20:46:23,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:46:23,820 INFO L93 Difference]: Finished difference Result 131 states and 150 transitions. [2018-02-04 20:46:23,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-02-04 20:46:23,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-02-04 20:46:23,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:46:23,823 INFO L225 Difference]: With dead ends: 131 [2018-02-04 20:46:23,823 INFO L226 Difference]: Without dead ends: 122 [2018-02-04 20:46:23,823 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2018-02-04 20:46:23,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-02-04 20:46:23,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 106. [2018-02-04 20:46:23,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-02-04 20:46:23,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 124 transitions. [2018-02-04 20:46:23,833 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 124 transitions. Word has length 24 [2018-02-04 20:46:23,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:46:23,833 INFO L432 AbstractCegarLoop]: Abstraction has 106 states and 124 transitions. [2018-02-04 20:46:23,833 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 20:46:23,834 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 124 transitions. [2018-02-04 20:46:23,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-04 20:46:23,834 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:46:23,834 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:46:23,835 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-02-04 20:46:23,835 INFO L82 PathProgramCache]: Analyzing trace with hash -2126392044, 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 20:46:23,839 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:46:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:23,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:23,910 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 20:46:23,939 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:46:23,939 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 20:46:23,939 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:46:23,939 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 20:46:23,939 INFO L182 omatonBuilderFactory]: Interpolants [736#(= 0 |ldv_malloc_#res.offset|), 729#(= 0 |probe2_6_#t~ret4.offset|), 730#(= 0 probe2_6_~p~0.offset), 718#true, 734#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |~#a6.offset| |old(~#a6.offset)|) (= |old(#length)| |#length|) (= |~#a6.base| |old(~#a6.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)), 719#false, 735#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|))] [2018-02-04 20:46:23,940 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 20:46:23,940 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 20:46:23,940 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 20:46:23,940 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-02-04 20:46:23,941 INFO L87 Difference]: Start difference. First operand 106 states and 124 transitions. Second operand 7 states. [2018-02-04 20:46:24,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:46:24,200 INFO L93 Difference]: Finished difference Result 115 states and 131 transitions. [2018-02-04 20:46:24,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-04 20:46:24,200 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-02-04 20:46:24,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:46:24,201 INFO L225 Difference]: With dead ends: 115 [2018-02-04 20:46:24,201 INFO L226 Difference]: Without dead ends: 115 [2018-02-04 20:46:24,202 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-02-04 20:46:24,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-02-04 20:46:24,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 106. [2018-02-04 20:46:24,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-02-04 20:46:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 123 transitions. [2018-02-04 20:46:24,209 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 123 transitions. Word has length 24 [2018-02-04 20:46:24,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:46:24,209 INFO L432 AbstractCegarLoop]: Abstraction has 106 states and 123 transitions. [2018-02-04 20:46:24,209 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 20:46:24,209 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 123 transitions. [2018-02-04 20:46:24,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-04 20:46:24,210 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:46:24,210 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:46:24,210 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-02-04 20:46:24,210 INFO L82 PathProgramCache]: Analyzing trace with hash -2126392043, 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 20:46:24,215 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:46:24,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:24,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:24,271 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 20:46:24,288 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:46:24,288 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-04 20:46:24,288 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:46:24,289 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 20:46:24,289 INFO L182 omatonBuilderFactory]: Interpolants [977#(= 0 |probe2_6_#t~ret4.base|), 978#(= 0 probe2_6_~p~0.base), 966#true, 982#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |~#a6.offset| |old(~#a6.offset)|) (= |old(#length)| |#length|) (= |~#a6.base| |old(~#a6.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)), 967#false, 983#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 984#(= 0 |ldv_malloc_#res.base|)] [2018-02-04 20:46:24,289 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 20:46:24,289 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 20:46:24,289 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 20:46:24,289 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-02-04 20:46:24,289 INFO L87 Difference]: Start difference. First operand 106 states and 123 transitions. Second operand 7 states. [2018-02-04 20:46:24,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:46:24,454 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2018-02-04 20:46:24,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-04 20:46:24,455 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2018-02-04 20:46:24,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:46:24,455 INFO L225 Difference]: With dead ends: 118 [2018-02-04 20:46:24,455 INFO L226 Difference]: Without dead ends: 115 [2018-02-04 20:46:24,456 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-02-04 20:46:24,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-02-04 20:46:24,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 107. [2018-02-04 20:46:24,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-02-04 20:46:24,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 123 transitions. [2018-02-04 20:46:24,462 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 123 transitions. Word has length 24 [2018-02-04 20:46:24,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:46:24,462 INFO L432 AbstractCegarLoop]: Abstraction has 107 states and 123 transitions. [2018-02-04 20:46:24,463 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 20:46:24,463 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 123 transitions. [2018-02-04 20:46:24,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-04 20:46:24,463 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:46:24,463 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:46:24,464 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-02-04 20:46:24,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1815899569, 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 20:46:24,466 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:46:24,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:24,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:24,518 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 20:46:24,535 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:46:24,535 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-02-04 20:46:24,535 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:46:24,535 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 20:46:24,535 INFO L182 omatonBuilderFactory]: Interpolants [1248#(not (= 0 |ldv_malloc_#t~malloc1.base|)), 1249#(not (= 0 |ldv_malloc_#res.base|)), 1218#true, 1219#false, 1237#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |~#a6.offset| |old(~#a6.offset)|) (= |old(#length)| |#length|) (= |~#a6.base| |old(~#a6.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)), 1238#(and (= |#valid| |old(#valid)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)), 1245#(not (= 0 |probe2_6_#t~ret4.base|)), 1246#(not (= 0 probe2_6_~p~0.base)), 1247#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|))] [2018-02-04 20:46:24,535 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 20:46:24,535 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 20:46:24,536 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 20:46:24,536 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-02-04 20:46:24,536 INFO L87 Difference]: Start difference. First operand 107 states and 123 transitions. Second operand 9 states. [2018-02-04 20:46:24,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:46:24,690 INFO L93 Difference]: Finished difference Result 111 states and 126 transitions. [2018-02-04 20:46:24,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 20:46:24,690 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-02-04 20:46:24,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:46:24,691 INFO L225 Difference]: With dead ends: 111 [2018-02-04 20:46:24,691 INFO L226 Difference]: Without dead ends: 111 [2018-02-04 20:46:24,691 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-02-04 20:46:24,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-02-04 20:46:24,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 103. [2018-02-04 20:46:24,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2018-02-04 20:46:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2018-02-04 20:46:24,694 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 24 [2018-02-04 20:46:24,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:46:24,694 INFO L432 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2018-02-04 20:46:24,695 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 20:46:24,695 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2018-02-04 20:46:24,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-04 20:46:24,695 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:46:24,695 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:46:24,695 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-02-04 20:46:24,695 INFO L82 PathProgramCache]: Analyzing trace with hash -510641866, 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 20:46:24,698 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:46:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:24,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:24,747 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 20:46:24,766 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:46:24,766 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 20:46:24,766 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:46:24,766 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 20:46:24,766 INFO L182 omatonBuilderFactory]: Interpolants [1479#(= 0 |probe2_6_#t~ret4.offset|), 1480#(= 0 probe2_6_~p~0.offset), 1466#true, 1467#false, 1484#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |~#a6.offset| |old(~#a6.offset)|) (= |old(#length)| |#length|) (= |~#a6.base| |old(~#a6.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)), 1485#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 1486#(= 0 |ldv_malloc_#t~malloc1.offset|), 1487#(= 0 |ldv_malloc_#res.offset|)] [2018-02-04 20:46:24,767 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 20:46:24,767 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-04 20:46:24,767 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-04 20:46:24,767 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2018-02-04 20:46:24,767 INFO L87 Difference]: Start difference. First operand 103 states and 118 transitions. Second operand 8 states. [2018-02-04 20:46:24,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:46:24,924 INFO L93 Difference]: Finished difference Result 110 states and 125 transitions. [2018-02-04 20:46:24,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-02-04 20:46:24,924 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2018-02-04 20:46:24,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:46:24,925 INFO L225 Difference]: With dead ends: 110 [2018-02-04 20:46:24,925 INFO L226 Difference]: Without dead ends: 110 [2018-02-04 20:46:24,925 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-02-04 20:46:24,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-02-04 20:46:24,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 102. [2018-02-04 20:46:24,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-02-04 20:46:24,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2018-02-04 20:46:24,929 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 26 [2018-02-04 20:46:24,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:46:24,929 INFO L432 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2018-02-04 20:46:24,929 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-04 20:46:24,929 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2018-02-04 20:46:24,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-04 20:46:24,930 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:46:24,930 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:46:24,930 INFO L371 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-02-04 20:46:24,930 INFO L82 PathProgramCache]: Analyzing trace with hash -510641865, 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 20:46:24,932 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:46:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:24,947 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 20:46:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:25,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:25,009 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 20:46:25,025 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:46:25,026 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-04 20:46:25,026 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:46:25,026 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 20:46:25,026 INFO L182 omatonBuilderFactory]: Interpolants [1728#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |~#a6.offset| |old(~#a6.offset)|) (= |old(#length)| |#length|) (= |~#a6.base| |old(~#a6.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)), 1729#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 1730#(= |#valid| |old(#valid)|), 1731#(= |#valid| (store |old(#valid)| |ldv_malloc_#t~malloc1.base| 1)), 1732#(= |#valid| (store |old(#valid)| |ldv_malloc_#res.base| 1)), 1723#(= 1 (select |#valid| |probe2_6_#t~ret4.base|)), 1724#(= 1 (select |#valid| probe2_6_~p~0.base)), 1710#true, 1711#false] [2018-02-04 20:46:25,026 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 20:46:25,026 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-04 20:46:25,027 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-04 20:46:25,027 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-02-04 20:46:25,027 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand 9 states. [2018-02-04 20:46:25,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:46:25,192 INFO L93 Difference]: Finished difference Result 109 states and 124 transitions. [2018-02-04 20:46:25,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-04 20:46:25,193 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2018-02-04 20:46:25,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:46:25,193 INFO L225 Difference]: With dead ends: 109 [2018-02-04 20:46:25,193 INFO L226 Difference]: Without dead ends: 109 [2018-02-04 20:46:25,194 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2018-02-04 20:46:25,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-02-04 20:46:25,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2018-02-04 20:46:25,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-02-04 20:46:25,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2018-02-04 20:46:25,197 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 26 [2018-02-04 20:46:25,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:46:25,197 INFO L432 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2018-02-04 20:46:25,197 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-04 20:46:25,197 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2018-02-04 20:46:25,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-02-04 20:46:25,197 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:46:25,198 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:46:25,198 INFO L371 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-02-04 20:46:25,198 INFO L82 PathProgramCache]: Analyzing trace with hash 188610762, 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 20:46:25,200 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:46:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:25,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:25,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:25,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:25,238 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 20:46:25,254 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-04 20:46:25,254 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-04 20:46:25,254 INFO L142 lantAutomatonBuilder]: Constructing canonical interpolant automaton, with selfloop in false state [2018-02-04 20:46:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:46:25,255 INFO L182 omatonBuilderFactory]: Interpolants [1956#(and (= 0 |probe2_6_#t~ret4.offset|) (= 0 |probe2_6_#t~ret4.base|)), 1957#(and (= probe2_6_~p~0.base 0) (= probe2_6_~p~0.offset 0)), 1945#true, 1946#false, 1964#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |~#a6.offset| |old(~#a6.offset)|) (= |old(#length)| |#length|) (= |~#a6.base| |old(~#a6.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)), 1965#(and (= |#valid| |old(#valid)|) (= |old(#length)| |#length|)), 1966#(and (= 0 |ldv_malloc_#res.offset|) (= 0 |ldv_malloc_#res.base|))] [2018-02-04 20:46:25,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-04 20:46:25,255 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-04 20:46:25,255 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-04 20:46:25,255 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-02-04 20:46:25,255 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand 7 states. [2018-02-04 20:46:25,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-04 20:46:25,352 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2018-02-04 20:46:25,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-04 20:46:25,353 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-02-04 20:46:25,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-04 20:46:25,353 INFO L225 Difference]: With dead ends: 68 [2018-02-04 20:46:25,353 INFO L226 Difference]: Without dead ends: 64 [2018-02-04 20:46:25,354 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-02-04 20:46:25,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2018-02-04 20:46:25,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2018-02-04 20:46:25,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-02-04 20:46:25,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2018-02-04 20:46:25,355 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 30 [2018-02-04 20:46:25,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-04 20:46:25,356 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2018-02-04 20:46:25,356 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-04 20:46:25,356 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2018-02-04 20:46:25,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-02-04 20:46:25,356 INFO L343 BasicCegarLoop]: Found error trace [2018-02-04 20:46:25,356 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-04 20:46:25,357 INFO L371 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.initErr1RequiresViolation, ULTIMATE.initErr0RequiresViolation, mainErr0EnsuresViolation, disconnect_6Err0RequiresViolation, disconnect_6Err2RequiresViolation, disconnect_6Err1RequiresViolation, disconnect_6Err3RequiresViolation, entry_pointErr0RequiresViolation, entry_pointErr1RequiresViolation, probe2_6Err1RequiresViolation, probe2_6Err0RequiresViolation, probe2_6Err2RequiresViolation, probe2_6Err3RequiresViolation]=== [2018-02-04 20:46:25,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1858419564, 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 20:46:25,363 INFO L67 tionRefinementEngine]: Using refinement strategy FixedTraceAbstractionRefinementStrategy [2018-02-04 20:46:25,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:25,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-04 20:46:25,415 WARN L195 Executor]: ExternalInterpolator (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in) stderr output: WARNING: array quantifier [2018-02-04 20:46:25,437 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:46:25,437 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:46:25,437 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:46:25,438 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:46:25,438 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:46:25,438 WARN L251 NnfTransformerHelper]: thrown away annotations [(:qid itp)] [2018-02-04 20:46:25,452 WARN L130 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2018-02-04 20:50:01,969 WARN L143 SmtUtils]: Spent 216504ms on a formula simplification that was a NOOP. DAG size: 76 [2018-02-04 20:50:05,980 WARN L669 Elim1Store]: solver failed to check if following equality is implied: (= %0 v_prenex_5) [2018-02-04 20:50:07,981 WARN L686 Elim1Store]: solver failed to check if following not equals relation is implied: (= %0 v_prenex_5) [2018-02-04 20:50:09,988 WARN L669 Elim1Store]: solver failed to check if following equality is implied: (= 1 (select v_prenex_1 v_prenex_5)) [2018-02-04 20:50:11,991 WARN L686 Elim1Store]: solver failed to check if following not equals relation is implied: (= 1 (select v_prenex_1 v_prenex_5)) [2018-02-04 20:50:11,991 INFO L303 Elim1Store]: Index analysis took 10020 ms Received shutdown request... [2018-02-04 20:50:15,995 WARN L491 AbstractCegarLoop]: Verification canceled [2018-02-04 20:50:15,999 WARN L185 ceAbstractionStarter]: Timeout [2018-02-04 20:50:15,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.02 08:50:15 BoogieIcfgContainer [2018-02-04 20:50:15,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-04 20:50:15,999 INFO L168 Benchmark]: Toolchain (without parser) took 233588.49 ms. Allocated memory was 407.9 MB in the beginning and 654.8 MB in the end (delta: 246.9 MB). Free memory was 361.9 MB in the beginning and 618.4 MB in the end (delta: -256.4 MB). Peak memory consumption was 189.1 MB. Max. memory is 5.3 GB. [2018-02-04 20:50:16,000 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 407.9 MB. Free memory is still 367.2 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-04 20:50:16,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.93 ms. Allocated memory is still 407.9 MB. Free memory was 361.9 MB in the beginning and 348.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-04 20:50:16,001 INFO L168 Benchmark]: Boogie Preprocessor took 24.02 ms. Allocated memory is still 407.9 MB. Free memory was 348.7 MB in the beginning and 346.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-04 20:50:16,001 INFO L168 Benchmark]: RCFGBuilder took 215.86 ms. Allocated memory is still 407.9 MB. Free memory was 346.1 MB in the beginning and 323.6 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 5.3 GB. [2018-02-04 20:50:16,001 INFO L168 Benchmark]: TraceAbstraction took 233174.85 ms. Allocated memory was 407.9 MB in the beginning and 654.8 MB in the end (delta: 246.9 MB). Free memory was 323.6 MB in the beginning and 618.4 MB in the end (delta: -294.8 MB). Peak memory consumption was 150.8 MB. Max. memory is 5.3 GB. [2018-02-04 20:50:16,003 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 407.9 MB. Free memory is still 367.2 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 170.93 ms. Allocated memory is still 407.9 MB. Free memory was 361.9 MB in the beginning and 348.7 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 24.02 ms. Allocated memory is still 407.9 MB. Free memory was 348.7 MB in the beginning and 346.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 215.86 ms. Allocated memory is still 407.9 MB. Free memory was 346.1 MB in the beginning and 323.6 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 233174.85 ms. Allocated memory was 407.9 MB in the beginning and 654.8 MB in the end (delta: 246.9 MB). Free memory was 323.6 MB in the beginning and 618.4 MB in the end (delta: -294.8 MB). Peak memory consumption was 150.8 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 1467). Cancelled while BasicCegarLoop was analyzing trace of length 33 with TraceHistMax 1, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PartialQuantifierElimination was eliminating quantifiers from formula with 2 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 13. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 1467). Cancelled while BasicCegarLoop was analyzing trace of length 33 with TraceHistMax 1, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PartialQuantifierElimination was eliminating quantifiers from formula with 2 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 13. - TimeoutResultAtElement [Line: 1478]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed (line 1478). Cancelled while BasicCegarLoop was analyzing trace of length 33 with TraceHistMax 1, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PartialQuantifierElimination was eliminating quantifiers from formula with 2 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 13. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 1463). Cancelled while BasicCegarLoop was analyzing trace of length 33 with TraceHistMax 1, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PartialQuantifierElimination was eliminating quantifiers from formula with 2 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 13. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that free always succeeds (line 1463). Cancelled while BasicCegarLoop was analyzing trace of length 33 with TraceHistMax 1, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PartialQuantifierElimination was eliminating quantifiers from formula with 2 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 13. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 1463). Cancelled while BasicCegarLoop was analyzing trace of length 33 with TraceHistMax 1, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PartialQuantifierElimination was eliminating quantifiers from formula with 2 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 13. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that free always succeeds (line 1463). Cancelled while BasicCegarLoop was analyzing trace of length 33 with TraceHistMax 1, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PartialQuantifierElimination was eliminating quantifiers from formula with 2 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 13. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 1475). Cancelled while BasicCegarLoop was analyzing trace of length 33 with TraceHistMax 1, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PartialQuantifierElimination was eliminating quantifiers from formula with 2 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 13. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 1475). Cancelled while BasicCegarLoop was analyzing trace of length 33 with TraceHistMax 1, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PartialQuantifierElimination was eliminating quantifiers from formula with 2 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 13. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 1454). Cancelled while BasicCegarLoop was analyzing trace of length 33 with TraceHistMax 1, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PartialQuantifierElimination was eliminating quantifiers from formula with 2 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 13. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds (line 1454). Cancelled while BasicCegarLoop was analyzing trace of length 33 with TraceHistMax 1, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PartialQuantifierElimination was eliminating quantifiers from formula with 2 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 13. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that free always succeeds (line 1458). Cancelled while BasicCegarLoop was analyzing trace of length 33 with TraceHistMax 1, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PartialQuantifierElimination was eliminating quantifiers from formula with 2 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 13. - TimeoutResultAtElement [Line: 1]: Timeout (TraceAbstraction) Unable to prove that free always succeeds (line 1458). Cancelled while BasicCegarLoop was analyzing trace of length 33 with TraceHistMax 1, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while InterpolatingTraceCheckCraig was constructing Craig interpolants, while PartialQuantifierElimination was eliminating quantifiers from formula with 2 quantifier alternations, while SimplifyDDAWithTimeout was simplifying term of DAG size 13. - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 66 locations, 13 error locations. TIMEOUT Result, 233.1s OverallTime, 10 OverallIterations, 1 TraceHistogramMax, 1.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 523 SDtfs, 451 SDslu, 1134 SDs, 0 SdLazy, 1672 SolverSat, 149 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred in iteration=5, 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, 9 MinimizatonAttempts, 79 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 186 NumberOfCodeBlocks, 186 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 177 ConstructedInterpolants, 2 QuantifiedInterpolants, 13683 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test6_1_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-04_20-50-16-011.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test6_1_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_z3.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-04_20-50-16-011.csv Completed graceful shutdown