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_SmtInterpol_NoArray.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-circular_true-unreach-call_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-a74eeac-m [2018-02-02 21:11:08,182 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 21:11:08,183 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 21:11:08,196 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 21:11:08,196 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 21:11:08,197 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 21:11:08,198 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 21:11:08,199 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 21:11:08,201 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 21:11:08,201 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 21:11:08,202 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 21:11:08,202 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 21:11:08,203 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 21:11:08,204 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 21:11:08,205 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 21:11:08,207 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 21:11:08,208 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 21:11:08,210 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 21:11:08,211 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 21:11:08,212 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 21:11:08,214 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-02 21:11:08,214 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-02 21:11:08,214 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-02 21:11:08,215 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-02 21:11:08,216 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-02 21:11:08,217 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-02 21:11:08,217 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-02 21:11:08,217 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-02 21:11:08,218 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-02 21:11:08,218 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 21:11:08,218 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 21:11:08,218 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf [2018-02-02 21:11:08,227 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 21:11:08,227 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 21:11:08,228 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 21:11:08,228 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 21:11:08,228 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 21:11:08,229 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 21:11:08,229 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 21:11:08,229 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 21:11:08,229 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 21:11:08,229 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 21:11:08,229 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 21:11:08,229 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 21:11:08,229 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 21:11:08,229 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 21:11:08,230 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 21:11:08,230 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 21:11:08,230 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 21:11:08,230 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 21:11:08,230 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 21:11:08,230 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 21:11:08,230 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 21:11:08,230 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 21:11:08,230 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 21:11:08,231 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 21:11:08,231 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-02 21:11:08,258 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 21:11:08,266 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 21:11:08,268 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 21:11:08,269 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 21:11:08,270 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 21:11:08,270 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular_true-unreach-call_true-valid-memsafety.i [2018-02-02 21:11:08,388 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 21:11:08,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 21:11:08,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 21:11:08,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 21:11:08,394 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 21:11:08,394 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fabbcd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08, skipping insertion in model container [2018-02-02 21:11:08,397 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,407 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 21:11:08,435 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 21:11:08,526 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 21:11:08,543 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 21:11:08,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08 WrapperNode [2018-02-02 21:11:08,550 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 21:11:08,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 21:11:08,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 21:11:08,550 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 21:11:08,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,579 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (1/1) ... [2018-02-02 21:11:08,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 21:11:08,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 21:11:08,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 21:11:08,584 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 21:11:08,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (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 21:11:08,623 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 21:11:08,623 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 21:11:08,623 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 21:11:08,623 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-02 21:11:08,623 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-02 21:11:08,623 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 21:11:08,624 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 21:11:08,624 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 21:11:08,624 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 21:11:08,624 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 21:11:08,624 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-02 21:11:08,624 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-02-02 21:11:08,624 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 21:11:08,624 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-02-02 21:11:08,625 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 21:11:08,625 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 21:11:08,625 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 21:11:08,935 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 21:11:08,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:11:08 BoogieIcfgContainer [2018-02-02 21:11:08,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 21:11:08,936 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 21:11:08,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 21:11:08,938 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 21:11:08,938 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:11:08" (1/3) ... [2018-02-02 21:11:08,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56220544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:11:08, skipping insertion in model container [2018-02-02 21:11:08,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:11:08" (2/3) ... [2018-02-02 21:11:08,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56220544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:11:08, skipping insertion in model container [2018-02-02 21:11:08,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:11:08" (3/3) ... [2018-02-02 21:11:08,940 INFO L107 eAbstractionObserver]: Analyzing ICFG sll-circular_true-unreach-call_true-valid-memsafety.i [2018-02-02 21:11:08,947 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 21:11:08,953 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 41 error locations. [2018-02-02 21:11:08,981 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 21:11:08,981 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 21:11:08,981 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 21:11:08,981 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 21:11:08,981 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 21:11:08,982 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 21:11:08,982 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 21:11:08,982 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 21:11:08,983 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 21:11:08,994 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2018-02-02 21:11:09,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-02-02 21:11:09,003 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:11:09,004 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:11:09,004 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 21:11:09,007 INFO L82 PathProgramCache]: Analyzing trace with hash -414871971, now seen corresponding path program 1 times [2018-02-02 21:11:09,008 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:11:09,009 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:11:09,039 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:09,039 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:11:09,039 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:11:09,078 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:11:09,121 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 21:11:09,123 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:11:09,123 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 21:11:09,124 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 21:11:09,133 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 21:11:09,134 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 21:11:09,135 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2018-02-02 21:11:09,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:11:09,321 INFO L93 Difference]: Finished difference Result 114 states and 121 transitions. [2018-02-02 21:11:09,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 21:11:09,322 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-02-02 21:11:09,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:11:09,329 INFO L225 Difference]: With dead ends: 114 [2018-02-02 21:11:09,329 INFO L226 Difference]: Without dead ends: 111 [2018-02-02 21:11:09,330 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 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 21:11:09,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2018-02-02 21:11:09,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 96. [2018-02-02 21:11:09,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-02-02 21:11:09,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 102 transitions. [2018-02-02 21:11:09,358 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 102 transitions. Word has length 8 [2018-02-02 21:11:09,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:11:09,358 INFO L432 AbstractCegarLoop]: Abstraction has 96 states and 102 transitions. [2018-02-02 21:11:09,358 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 21:11:09,359 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 102 transitions. [2018-02-02 21:11:09,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-02-02 21:11:09,359 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:11:09,359 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:11:09,359 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 21:11:09,359 INFO L82 PathProgramCache]: Analyzing trace with hash -414871970, now seen corresponding path program 1 times [2018-02-02 21:11:09,359 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:11:09,359 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:11:09,360 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:09,360 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:11:09,360 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:09,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:11:09,374 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:11:09,433 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 21:11:09,433 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:11:09,434 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 21:11:09,434 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 21:11:09,435 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 21:11:09,435 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 21:11:09,435 INFO L87 Difference]: Start difference. First operand 96 states and 102 transitions. Second operand 4 states. [2018-02-02 21:11:09,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:11:09,542 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2018-02-02 21:11:09,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-02-02 21:11:09,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-02-02 21:11:09,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:11:09,545 INFO L225 Difference]: With dead ends: 103 [2018-02-02 21:11:09,545 INFO L226 Difference]: Without dead ends: 103 [2018-02-02 21:11:09,545 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 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 21:11:09,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2018-02-02 21:11:09,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 92. [2018-02-02 21:11:09,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-02-02 21:11:09,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 98 transitions. [2018-02-02 21:11:09,550 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 98 transitions. Word has length 8 [2018-02-02 21:11:09,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:11:09,550 INFO L432 AbstractCegarLoop]: Abstraction has 92 states and 98 transitions. [2018-02-02 21:11:09,550 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 21:11:09,550 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 98 transitions. [2018-02-02 21:11:09,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 21:11:09,550 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:11:09,550 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:11:09,550 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 21:11:09,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1612643290, now seen corresponding path program 1 times [2018-02-02 21:11:09,551 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:11:09,551 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:11:09,552 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:09,552 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:11:09,552 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:09,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:11:09,563 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:11:09,587 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 21:11:09,587 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:11:09,587 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 21:11:09,588 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-02-02 21:11:09,588 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-02-02 21:11:09,588 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-02-02 21:11:09,588 INFO L87 Difference]: Start difference. First operand 92 states and 98 transitions. Second operand 4 states. [2018-02-02 21:11:09,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:11:09,659 INFO L93 Difference]: Finished difference Result 88 states and 95 transitions. [2018-02-02 21:11:09,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 21:11:09,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-02-02 21:11:09,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:11:09,660 INFO L225 Difference]: With dead ends: 88 [2018-02-02 21:11:09,661 INFO L226 Difference]: Without dead ends: 88 [2018-02-02 21:11:09,661 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 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 21:11:09,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-02-02 21:11:09,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 81. [2018-02-02 21:11:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-02-02 21:11:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2018-02-02 21:11:09,669 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 14 [2018-02-02 21:11:09,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:11:09,669 INFO L432 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2018-02-02 21:11:09,669 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-02-02 21:11:09,669 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2018-02-02 21:11:09,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 21:11:09,670 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:11:09,670 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:11:09,670 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 21:11:09,670 INFO L82 PathProgramCache]: Analyzing trace with hash 1612643291, now seen corresponding path program 1 times [2018-02-02 21:11:09,671 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:11:09,671 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:11:09,672 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:09,672 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:11:09,672 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:11:09,687 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:11:09,746 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 21:11:09,746 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:11:09,746 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 21:11:09,746 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 21:11:09,747 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 21:11:09,747 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 21:11:09,747 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 5 states. [2018-02-02 21:11:09,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:11:09,882 INFO L93 Difference]: Finished difference Result 101 states and 108 transitions. [2018-02-02 21:11:09,883 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 21:11:09,883 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2018-02-02 21:11:09,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:11:09,883 INFO L225 Difference]: With dead ends: 101 [2018-02-02 21:11:09,883 INFO L226 Difference]: Without dead ends: 101 [2018-02-02 21:11:09,884 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-02-02 21:11:09,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-02-02 21:11:09,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 88. [2018-02-02 21:11:09,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-02-02 21:11:09,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2018-02-02 21:11:09,888 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 14 [2018-02-02 21:11:09,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:11:09,888 INFO L432 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2018-02-02 21:11:09,889 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 21:11:09,889 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2018-02-02 21:11:09,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-02 21:11:09,889 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:11:09,889 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:11:09,889 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 21:11:09,890 INFO L82 PathProgramCache]: Analyzing trace with hash -22797273, now seen corresponding path program 1 times [2018-02-02 21:11:09,890 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:11:09,890 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:11:09,891 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:09,891 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:11:09,891 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:11:09,904 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:11:09,948 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 21:11:09,948 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:11:09,948 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 21:11:09,948 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 21:11:09,948 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 21:11:09,949 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 21:11:09,949 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand 6 states. [2018-02-02 21:11:10,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:11:10,102 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2018-02-02 21:11:10,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 21:11:10,102 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-02-02 21:11:10,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:11:10,103 INFO L225 Difference]: With dead ends: 132 [2018-02-02 21:11:10,103 INFO L226 Difference]: Without dead ends: 132 [2018-02-02 21:11:10,103 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-02-02 21:11:10,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2018-02-02 21:11:10,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 87. [2018-02-02 21:11:10,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-02-02 21:11:10,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2018-02-02 21:11:10,106 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 18 [2018-02-02 21:11:10,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:11:10,106 INFO L432 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2018-02-02 21:11:10,106 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 21:11:10,107 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2018-02-02 21:11:10,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-02-02 21:11:10,107 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:11:10,107 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:11:10,107 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 21:11:10,107 INFO L82 PathProgramCache]: Analyzing trace with hash -22797272, now seen corresponding path program 1 times [2018-02-02 21:11:10,108 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:11:10,108 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:11:10,109 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:10,109 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:11:10,109 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:11:10,122 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:11:10,197 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 21:11:10,197 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:11:10,198 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 21:11:10,198 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 21:11:10,198 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 21:11:10,198 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 21:11:10,198 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand 6 states. [2018-02-02 21:11:10,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:11:10,410 INFO L93 Difference]: Finished difference Result 131 states and 140 transitions. [2018-02-02 21:11:10,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 21:11:10,410 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2018-02-02 21:11:10,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:11:10,410 INFO L225 Difference]: With dead ends: 131 [2018-02-02 21:11:10,411 INFO L226 Difference]: Without dead ends: 131 [2018-02-02 21:11:10,411 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-02-02 21:11:10,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2018-02-02 21:11:10,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 75. [2018-02-02 21:11:10,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-02-02 21:11:10,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 81 transitions. [2018-02-02 21:11:10,414 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 81 transitions. Word has length 18 [2018-02-02 21:11:10,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:11:10,414 INFO L432 AbstractCegarLoop]: Abstraction has 75 states and 81 transitions. [2018-02-02 21:11:10,414 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 21:11:10,414 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 81 transitions. [2018-02-02 21:11:10,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-02 21:11:10,414 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:11:10,415 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] [2018-02-02 21:11:10,415 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr36RequiresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr38RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr39RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr35RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr40EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr34RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation, mainErr37RequiresViolation]=== [2018-02-02 21:11:10,415 INFO L82 PathProgramCache]: Analyzing trace with hash -152886338, now seen corresponding path program 1 times [2018-02-02 21:11:10,415 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:11:10,415 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:11:10,416 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:10,416 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:11:10,416 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:11:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:11:10,429 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:11:10,435 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Unknown lemma type! at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:299) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:263) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:132) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:915) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:397) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-02-02 21:11:10,441 INFO L168 Benchmark]: Toolchain (without parser) took 2052.48 ms. Allocated memory was 399.0 MB in the beginning and 621.3 MB in the end (delta: 222.3 MB). Free memory was 355.7 MB in the beginning and 555.8 MB in the end (delta: -200.2 MB). Peak memory consumption was 22.1 MB. Max. memory is 5.3 GB. [2018-02-02 21:11:10,442 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 399.0 MB. Free memory is still 361.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 21:11:10,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.41 ms. Allocated memory is still 399.0 MB. Free memory was 355.7 MB in the beginning and 342.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 5.3 GB. [2018-02-02 21:11:10,442 INFO L168 Benchmark]: Boogie Preprocessor took 32.82 ms. Allocated memory is still 399.0 MB. Free memory is still 342.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 21:11:10,442 INFO L168 Benchmark]: RCFGBuilder took 352.29 ms. Allocated memory is still 399.0 MB. Free memory was 342.4 MB in the beginning and 309.3 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 5.3 GB. [2018-02-02 21:11:10,443 INFO L168 Benchmark]: TraceAbstraction took 1504.44 ms. Allocated memory was 399.0 MB in the beginning and 621.3 MB in the end (delta: 222.3 MB). Free memory was 309.3 MB in the beginning and 555.8 MB in the end (delta: -246.5 MB). There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 21:11:10,444 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 399.0 MB. Free memory is still 361.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 160.41 ms. Allocated memory is still 399.0 MB. Free memory was 355.7 MB in the beginning and 342.4 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 32.82 ms. Allocated memory is still 399.0 MB. Free memory is still 342.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * RCFGBuilder took 352.29 ms. Allocated memory is still 399.0 MB. Free memory was 342.4 MB in the beginning and 309.3 MB in the end (delta: 33.1 MB). Peak memory consumption was 33.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1504.44 ms. Allocated memory was 399.0 MB in the beginning and 621.3 MB in the end (delta: 222.3 MB). Free memory was 309.3 MB in the beginning and 555.8 MB in the end (delta: -246.5 MB). There was no memory consumed. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Unknown lemma type! de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Unknown lemma type!: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:299) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/sll-circular_true-unreach-call_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_21-11-10-448.csv Received shutdown request...