java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test7_false-valid-memtrack_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-a74eeac-m [2018-02-02 19:21:19,173 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 19:21:19,175 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 19:21:19,185 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 19:21:19,186 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 19:21:19,186 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 19:21:19,187 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 19:21:19,188 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 19:21:19,189 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 19:21:19,190 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 19:21:19,191 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 19:21:19,191 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 19:21:19,192 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 19:21:19,193 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 19:21:19,193 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 19:21:19,195 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 19:21:19,197 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 19:21:19,198 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 19:21:19,199 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 19:21:19,200 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 19:21:19,202 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-02 19:21:19,202 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-02 19:21:19,202 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-02 19:21:19,203 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-02 19:21:19,204 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-02 19:21:19,205 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-02 19:21:19,205 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-02 19:21:19,205 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-02 19:21:19,206 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-02 19:21:19,206 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 19:21:19,206 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 19:21:19,206 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-02-02 19:21:19,216 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 19:21:19,216 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 19:21:19,217 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 19:21:19,217 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 19:21:19,218 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 19:21:19,218 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 19:21:19,218 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 19:21:19,218 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 19:21:19,218 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 19:21:19,218 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 19:21:19,219 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 19:21:19,219 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 19:21:19,219 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 19:21:19,219 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 19:21:19,219 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 19:21:19,219 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 19:21:19,220 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 19:21:19,220 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 19:21:19,220 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 19:21:19,220 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 19:21:19,220 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 19:21:19,220 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 19:21:19,220 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 19:21:19,221 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 19:21:19,221 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-02-02 19:21:19,249 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 19:21:19,256 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 19:21:19,259 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 19:21:19,260 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 19:21:19,260 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 19:21:19,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/memleaks_test7_false-valid-memtrack_true-termination.i [2018-02-02 19:21:19,397 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 19:21:19,398 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 19:21:19,399 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 19:21:19,399 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 19:21:19,405 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 19:21:19,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 07:21:19" (1/1) ... [2018-02-02 19:21:19,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fc89e21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:21:19, skipping insertion in model container [2018-02-02 19:21:19,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 07:21:19" (1/1) ... [2018-02-02 19:21:19,423 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 19:21:19,457 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 19:21:19,536 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 19:21:19,549 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 19:21:19,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:21:19 WrapperNode [2018-02-02 19:21:19,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 19:21:19,556 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 19:21:19,556 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 19:21:19,556 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 19:21:19,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:21:19" (1/1) ... [2018-02-02 19:21:19,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:21:19" (1/1) ... [2018-02-02 19:21:19,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:21:19" (1/1) ... [2018-02-02 19:21:19,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:21:19" (1/1) ... [2018-02-02 19:21:19,581 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:21:19" (1/1) ... [2018-02-02 19:21:19,582 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:21:19" (1/1) ... [2018-02-02 19:21:19,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:21:19" (1/1) ... [2018-02-02 19:21:19,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 19:21:19,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 19:21:19,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 19:21:19,584 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 19:21:19,585 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:21:19" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 19:21:19,619 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 19:21:19,619 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 19:21:19,619 INFO L136 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-02-02 19:21:19,619 INFO L136 BoogieDeclarations]: Found implementation of procedure f6 [2018-02-02 19:21:19,619 INFO L136 BoogieDeclarations]: Found implementation of procedure g6 [2018-02-02 19:21:19,619 INFO L136 BoogieDeclarations]: Found implementation of procedure probe1_6 [2018-02-02 19:21:19,620 INFO L136 BoogieDeclarations]: Found implementation of procedure disconnect_2_6 [2018-02-02 19:21:19,620 INFO L136 BoogieDeclarations]: Found implementation of procedure entry_point [2018-02-02 19:21:19,620 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 19:21:19,620 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-02 19:21:19,620 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-02 19:21:19,620 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 19:21:19,620 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 19:21:19,620 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 19:21:19,620 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-02 19:21:19,620 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-02 19:21:19,621 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 19:21:19,621 INFO L128 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-02-02 19:21:19,621 INFO L128 BoogieDeclarations]: Found specification of procedure f6 [2018-02-02 19:21:19,621 INFO L128 BoogieDeclarations]: Found specification of procedure g6 [2018-02-02 19:21:19,621 INFO L128 BoogieDeclarations]: Found specification of procedure probe1_6 [2018-02-02 19:21:19,621 INFO L128 BoogieDeclarations]: Found specification of procedure disconnect_2_6 [2018-02-02 19:21:19,621 INFO L128 BoogieDeclarations]: Found specification of procedure entry_point [2018-02-02 19:21:19,621 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 19:21:19,621 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 19:21:19,622 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 19:21:19,747 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 19:21:19,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 07:21:19 BoogieIcfgContainer [2018-02-02 19:21:19,747 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 19:21:19,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 19:21:19,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 19:21:19,750 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 19:21:19,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 07:21:19" (1/3) ... [2018-02-02 19:21:19,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e42dfef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 07:21:19, skipping insertion in model container [2018-02-02 19:21:19,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 07:21:19" (2/3) ... [2018-02-02 19:21:19,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e42dfef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 07:21:19, skipping insertion in model container [2018-02-02 19:21:19,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 07:21:19" (3/3) ... [2018-02-02 19:21:19,752 INFO L107 eAbstractionObserver]: Analyzing ICFG memleaks_test7_false-valid-memtrack_true-termination.i [2018-02-02 19:21:19,758 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 19:21:19,762 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-02-02 19:21:19,793 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 19:21:19,793 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 19:21:19,794 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 19:21:19,794 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 19:21:19,794 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 19:21:19,794 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 19:21:19,794 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 19:21:19,794 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 19:21:19,795 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 19:21:19,807 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2018-02-02 19:21:19,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-02 19:21:19,815 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:21:19,816 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] [2018-02-02 19:21:19,817 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-02-02 19:21:19,822 INFO L82 PathProgramCache]: Analyzing trace with hash 2071706780, now seen corresponding path program 1 times [2018-02-02 19:21:19,823 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:21:19,824 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:21:19,867 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:19,867 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:21:19,867 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:21:19,910 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:21:20,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:21:20,036 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:21:20,036 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 19:21:20,038 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 19:21:20,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 19:21:20,091 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 19:21:20,093 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 5 states. [2018-02-02 19:21:20,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:21:20,131 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2018-02-02 19:21:20,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 19:21:20,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-02-02 19:21:20,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:21:20,143 INFO L225 Difference]: With dead ends: 61 [2018-02-02 19:21:20,143 INFO L226 Difference]: Without dead ends: 58 [2018-02-02 19:21:20,144 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 19:21:20,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-02-02 19:21:20,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2018-02-02 19:21:20,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-02-02 19:21:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2018-02-02 19:21:20,176 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 23 [2018-02-02 19:21:20,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:21:20,176 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2018-02-02 19:21:20,176 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 19:21:20,177 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2018-02-02 19:21:20,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-02 19:21:20,177 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:21:20,177 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] [2018-02-02 19:21:20,178 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-02-02 19:21:20,178 INFO L82 PathProgramCache]: Analyzing trace with hash -776458562, now seen corresponding path program 1 times [2018-02-02 19:21:20,178 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:21:20,178 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:21:20,180 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:20,180 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:21:20,180 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:21:20,201 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:21:20,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:21:20,244 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:21:20,244 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 19:21:20,245 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 19:21:20,245 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 19:21:20,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 19:21:20,245 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 6 states. [2018-02-02 19:21:20,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:21:20,275 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2018-02-02 19:21:20,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 19:21:20,276 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-02-02 19:21:20,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:21:20,277 INFO L225 Difference]: With dead ends: 55 [2018-02-02 19:21:20,277 INFO L226 Difference]: Without dead ends: 55 [2018-02-02 19:21:20,278 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-02 19:21:20,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-02-02 19:21:20,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-02-02 19:21:20,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-02-02 19:21:20,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2018-02-02 19:21:20,284 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 25 [2018-02-02 19:21:20,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:21:20,284 INFO L432 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2018-02-02 19:21:20,285 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 19:21:20,285 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2018-02-02 19:21:20,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-02 19:21:20,285 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:21:20,285 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] [2018-02-02 19:21:20,286 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-02-02 19:21:20,286 INFO L82 PathProgramCache]: Analyzing trace with hash -776458561, now seen corresponding path program 1 times [2018-02-02 19:21:20,286 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:21:20,286 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:21:20,287 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:20,287 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:21:20,287 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:20,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:21:20,303 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:21:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:21:20,350 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:21:20,350 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 19:21:20,351 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 19:21:20,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 19:21:20,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 19:21:20,351 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 6 states. [2018-02-02 19:21:20,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:21:20,412 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2018-02-02 19:21:20,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 19:21:20,413 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2018-02-02 19:21:20,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:21:20,413 INFO L225 Difference]: With dead ends: 56 [2018-02-02 19:21:20,413 INFO L226 Difference]: Without dead ends: 56 [2018-02-02 19:21:20,413 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-02 19:21:20,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-02-02 19:21:20,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2018-02-02 19:21:20,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-02-02 19:21:20,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2018-02-02 19:21:20,416 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 25 [2018-02-02 19:21:20,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:21:20,416 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2018-02-02 19:21:20,416 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 19:21:20,416 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2018-02-02 19:21:20,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-02-02 19:21:20,417 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:21:20,417 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] [2018-02-02 19:21:20,417 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-02-02 19:21:20,417 INFO L82 PathProgramCache]: Analyzing trace with hash -1521421354, now seen corresponding path program 1 times [2018-02-02 19:21:20,417 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:21:20,417 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:21:20,418 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:20,418 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:21:20,418 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:21:20,431 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:21:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:21:20,508 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:21:20,508 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 19:21:20,508 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 19:21:20,509 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 19:21:20,509 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 19:21:20,509 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 4 states. [2018-02-02 19:21:20,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:21:20,582 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2018-02-02 19:21:20,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 19:21:20,582 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-02-02 19:21:20,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:21:20,583 INFO L225 Difference]: With dead ends: 64 [2018-02-02 19:21:20,583 INFO L226 Difference]: Without dead ends: 50 [2018-02-02 19:21:20,583 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-02-02 19:21:20,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-02-02 19:21:20,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-02-02 19:21:20,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-02 19:21:20,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 53 transitions. [2018-02-02 19:21:20,588 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 53 transitions. Word has length 25 [2018-02-02 19:21:20,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:21:20,588 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 53 transitions. [2018-02-02 19:21:20,588 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 19:21:20,588 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 53 transitions. [2018-02-02 19:21:20,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-02 19:21:20,589 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:21:20,589 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] [2018-02-02 19:21:20,589 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-02-02 19:21:20,589 INFO L82 PathProgramCache]: Analyzing trace with hash 1580819832, now seen corresponding path program 1 times [2018-02-02 19:21:20,589 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:21:20,590 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:21:20,593 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:20,593 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:21:20,593 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:21:20,602 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:21:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:21:20,647 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:21:20,647 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 19:21:20,648 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 19:21:20,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 19:21:20,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 19:21:20,648 INFO L87 Difference]: Start difference. First operand 50 states and 53 transitions. Second operand 6 states. [2018-02-02 19:21:20,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:21:20,675 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-02-02 19:21:20,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 19:21:20,676 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2018-02-02 19:21:20,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:21:20,676 INFO L225 Difference]: With dead ends: 50 [2018-02-02 19:21:20,676 INFO L226 Difference]: Without dead ends: 50 [2018-02-02 19:21:20,677 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-02-02 19:21:20,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-02-02 19:21:20,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2018-02-02 19:21:20,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2018-02-02 19:21:20,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2018-02-02 19:21:20,680 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 27 [2018-02-02 19:21:20,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:21:20,680 INFO L432 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2018-02-02 19:21:20,680 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 19:21:20,681 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2018-02-02 19:21:20,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-02-02 19:21:20,681 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:21:20,681 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] [2018-02-02 19:21:20,681 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-02-02 19:21:20,682 INFO L82 PathProgramCache]: Analyzing trace with hash -693357389, now seen corresponding path program 1 times [2018-02-02 19:21:20,682 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:21:20,682 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:21:20,683 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:20,683 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:21:20,683 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:21:20,694 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:21:20,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:21:20,776 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:21:20,776 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 19:21:20,776 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-02-02 19:21:20,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-02-02 19:21:20,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-02-02 19:21:20,777 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 8 states. [2018-02-02 19:21:20,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:21:20,932 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2018-02-02 19:21:20,932 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 19:21:20,932 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-02-02 19:21:20,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:21:20,933 INFO L225 Difference]: With dead ends: 55 [2018-02-02 19:21:20,933 INFO L226 Difference]: Without dead ends: 55 [2018-02-02 19:21:20,933 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2018-02-02 19:21:20,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-02-02 19:21:20,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2018-02-02 19:21:20,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-02-02 19:21:20,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 51 transitions. [2018-02-02 19:21:20,937 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 51 transitions. Word has length 31 [2018-02-02 19:21:20,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:21:20,937 INFO L432 AbstractCegarLoop]: Abstraction has 49 states and 51 transitions. [2018-02-02 19:21:20,937 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-02-02 19:21:20,937 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 51 transitions. [2018-02-02 19:21:20,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-02-02 19:21:20,938 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:21:20,938 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] [2018-02-02 19:21:20,938 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr0EnsuresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-02-02 19:21:20,938 INFO L82 PathProgramCache]: Analyzing trace with hash -693357388, now seen corresponding path program 1 times [2018-02-02 19:21:20,938 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:21:20,938 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:21:20,939 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:20,939 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:21:20,939 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:20,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:21:20,950 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:21:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:21:21,066 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:21:21,066 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-02 19:21:21,067 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 19:21:21,067 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 19:21:21,067 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-02-02 19:21:21,067 INFO L87 Difference]: Start difference. First operand 49 states and 51 transitions. Second operand 9 states. [2018-02-02 19:21:21,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:21:21,285 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2018-02-02 19:21:21,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 19:21:21,285 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2018-02-02 19:21:21,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:21:21,286 INFO L225 Difference]: With dead ends: 50 [2018-02-02 19:21:21,286 INFO L226 Difference]: Without dead ends: 50 [2018-02-02 19:21:21,286 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-02-02 19:21:21,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-02-02 19:21:21,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2018-02-02 19:21:21,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-02-02 19:21:21,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2018-02-02 19:21:21,291 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 31 [2018-02-02 19:21:21,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:21:21,291 INFO L432 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2018-02-02 19:21:21,291 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 19:21:21,291 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2018-02-02 19:21:21,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-02-02 19:21:21,292 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:21:21,292 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, 1, 1, 1] [2018-02-02 19:21:21,292 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr0EnsuresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-02-02 19:21:21,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1580514095, now seen corresponding path program 1 times [2018-02-02 19:21:21,292 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:21:21,293 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:21:21,294 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:21,294 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:21:21,294 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:21:21,305 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:21:21,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:21:21,482 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:21:21,482 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-02-02 19:21:21,482 INFO L409 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-02-02 19:21:21,482 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-02-02 19:21:21,483 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2018-02-02 19:21:21,483 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 9 states. [2018-02-02 19:21:21,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:21:21,630 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2018-02-02 19:21:21,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 19:21:21,632 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2018-02-02 19:21:21,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:21:21,632 INFO L225 Difference]: With dead ends: 58 [2018-02-02 19:21:21,632 INFO L226 Difference]: Without dead ends: 46 [2018-02-02 19:21:21,633 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2018-02-02 19:21:21,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-02-02 19:21:21,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-02-02 19:21:21,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-02-02 19:21:21,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-02-02 19:21:21,638 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 35 [2018-02-02 19:21:21,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:21:21,639 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-02-02 19:21:21,639 INFO L433 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-02-02 19:21:21,639 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-02-02 19:21:21,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-02-02 19:21:21,640 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:21:21,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:21:21,640 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr0EnsuresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-02-02 19:21:21,640 INFO L82 PathProgramCache]: Analyzing trace with hash 720787466, now seen corresponding path program 1 times [2018-02-02 19:21:21,640 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:21:21,640 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:21:21,642 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:21,642 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:21:21,642 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 19:21:21,651 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 19:21:21,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 19:21:21,680 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 19:21:21,680 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 19:21:21,680 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 19:21:21,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 19:21:21,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 19:21:21,680 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 5 states. [2018-02-02 19:21:21,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 19:21:21,685 INFO L93 Difference]: Finished difference Result 46 states and 45 transitions. [2018-02-02 19:21:21,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 19:21:21,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2018-02-02 19:21:21,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 19:21:21,687 INFO L225 Difference]: With dead ends: 46 [2018-02-02 19:21:21,688 INFO L226 Difference]: Without dead ends: 46 [2018-02-02 19:21:21,688 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 19:21:21,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-02-02 19:21:21,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2018-02-02 19:21:21,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-02-02 19:21:21,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 45 transitions. [2018-02-02 19:21:21,692 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 45 transitions. Word has length 41 [2018-02-02 19:21:21,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 19:21:21,693 INFO L432 AbstractCegarLoop]: Abstraction has 46 states and 45 transitions. [2018-02-02 19:21:21,693 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 19:21:21,693 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 45 transitions. [2018-02-02 19:21:21,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-02-02 19:21:21,694 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 19:21:21,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 19:21:21,694 INFO L371 AbstractCegarLoop]: === Iteration 10 === [mainErr0EnsuresViolation, probe1_6Err1RequiresViolation, probe1_6Err2RequiresViolation, probe1_6Err3RequiresViolation, probe1_6Err0RequiresViolation]=== [2018-02-02 19:21:21,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1114160435, now seen corresponding path program 1 times [2018-02-02 19:21:21,694 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-02-02 19:21:21,694 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-02-02 19:21:21,695 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:21,695 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 19:21:21,696 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 19:21:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 19:21:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 19:21:21,734 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-02 19:21:21,746 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-02-02 19:21:21,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 07:21:21 BoogieIcfgContainer [2018-02-02 19:21:21,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 19:21:21,761 INFO L168 Benchmark]: Toolchain (without parser) took 2363.97 ms. Allocated memory was 401.6 MB in the beginning and 626.0 MB in the end (delta: 224.4 MB). Free memory was 358.4 MB in the beginning and 438.8 MB in the end (delta: -80.4 MB). Peak memory consumption was 144.0 MB. Max. memory is 5.3 GB. [2018-02-02 19:21:21,762 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 401.6 MB. Free memory is still 365.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 19:21:21,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 156.82 ms. Allocated memory is still 401.6 MB. Free memory was 358.4 MB in the beginning and 345.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. [2018-02-02 19:21:21,763 INFO L168 Benchmark]: Boogie Preprocessor took 28.08 ms. Allocated memory is still 401.6 MB. Free memory was 345.2 MB in the beginning and 343.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-02 19:21:21,763 INFO L168 Benchmark]: RCFGBuilder took 163.26 ms. Allocated memory is still 401.6 MB. Free memory was 343.9 MB in the beginning and 324.6 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 5.3 GB. [2018-02-02 19:21:21,763 INFO L168 Benchmark]: TraceAbstraction took 2012.42 ms. Allocated memory was 401.6 MB in the beginning and 626.0 MB in the end (delta: 224.4 MB). Free memory was 324.6 MB in the beginning and 438.8 MB in the end (delta: -114.2 MB). Peak memory consumption was 110.2 MB. Max. memory is 5.3 GB. [2018-02-02 19:21:21,765 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 401.6 MB. Free memory is still 365.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 156.82 ms. Allocated memory is still 401.6 MB. Free memory was 358.4 MB in the beginning and 345.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 28.08 ms. Allocated memory is still 401.6 MB. Free memory was 345.2 MB in the beginning and 343.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 163.26 ms. Allocated memory is still 401.6 MB. Free memory was 343.9 MB in the beginning and 324.6 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2012.42 ms. Allocated memory was 401.6 MB in the beginning and 626.0 MB in the end (delta: 224.4 MB). Free memory was 324.6 MB in the beginning and 438.8 MB in the end (delta: -114.2 MB). Peak memory consumption was 110.2 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1473]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1473. Possible FailurePath: [L1474] CALL entry_point() [L1466] FCALL struct A a7; VAL [a7={7:0}] [L1467] CALL, EXPR probe1_6(&a7) VAL [a={7:0}] [L1443] int ret = - -3; VAL [a={7:0}, a={7:0}, ret=3] [L1444] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4] [L1073] COND TRUE __VERIFIER_nondet_int() [L1074] EXPR, FCALL malloc(size) VAL [\old(size)=4, malloc(size)={6:0}, size=4] [L1074] RET return malloc(size); VAL [\old(size)=4, \result={6:0}, malloc(size)={6:0}, size=4] [L1444] EXPR ldv_malloc(sizeof(int)) VAL [a={7:0}, a={7:0}, ldv_malloc(sizeof(int))={6:0}, ret=3] [L1444] int *p = (int *)ldv_malloc(sizeof(int)); [L1445] COND FALSE !(p==0) VAL [a={7:0}, a={7:0}, p={6:0}, ret=3] [L1447] CALL, EXPR f6() [L1435] RET return __VERIFIER_nondet_int(); [L1447] EXPR f6() VAL [a={7:0}, a={7:0}, f6()=0, p={6:0}, ret=3] [L1447] ret = f6() [L1448] COND FALSE !(ret<0) VAL [a={7:0}, a={7:0}, p={6:0}, ret=0] [L1450] CALL, EXPR g6() [L1439] RET return __VERIFIER_nondet_int(); [L1450] EXPR g6() VAL [a={7:0}, a={7:0}, g6()=0, p={6:0}, ret=0] [L1450] ret = g6() [L1451] COND FALSE !(ret<0) VAL [a={7:0}, a={7:0}, p={6:0}, ret=0] [L1453] FCALL a->p = p VAL [a={7:0}, a={7:0}, p={6:0}, ret=0] [L1454] RET return 0; VAL [\result=0, a={7:0}, a={7:0}, p={6:0}, ret=0] [L1467] EXPR probe1_6(&a7) VAL [a7={7:0}, probe1_6(&a7)=0] [L1467] int ret = probe1_6(&a7); [L1468] COND TRUE ret==0 VAL [a7={7:0}, ret=0] [L1469] RET, FCALL disconnect_2_6(&a7) VAL [a7={7:0}, ret=0] [L1474] entry_point() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 55 locations, 5 error locations. UNSAFE Result, 1.9s OverallTime, 10 OverallIterations, 1 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 420 SDtfs, 155 SDslu, 1215 SDs, 0 SdLazy, 698 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 21 SyntacticMatches, 6 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=56occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 9 MinimizatonAttempts, 12 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 308 NumberOfCodeBlocks, 308 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 254 ConstructedInterpolants, 0 QuantifiedInterpolants, 28198 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: unable to determine feasibility of some traces Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test7_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_19-21-21-770.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/memleaks_test7_false-valid-memtrack_true-termination.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_19-21-21-770.csv Received shutdown request...