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/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/list-ext-properties/list-ext_flag_false-unreach-call_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-acfac67 [2018-01-28 22:06:24,123 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-28 22:06:24,125 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-28 22:06:24,138 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-28 22:06:24,139 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-28 22:06:24,140 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-28 22:06:24,141 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-28 22:06:24,142 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-28 22:06:24,143 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-28 22:06:24,144 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-28 22:06:24,145 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-28 22:06:24,145 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-28 22:06:24,145 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-28 22:06:24,147 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-28 22:06:24,148 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-28 22:06:24,150 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-28 22:06:24,152 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-28 22:06:24,154 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-28 22:06:24,155 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-28 22:06:24,156 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-28 22:06:24,159 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-28 22:06:24,159 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-28 22:06:24,159 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-28 22:06:24,160 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-28 22:06:24,161 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-28 22:06:24,162 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-28 22:06:24,162 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-28 22:06:24,163 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-28 22:06:24,163 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-28 22:06:24,163 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-28 22:06:24,164 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-28 22:06:24,164 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-28 22:06:24,174 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-28 22:06:24,174 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-28 22:06:24,175 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-28 22:06:24,175 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-28 22:06:24,175 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-28 22:06:24,175 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-28 22:06:24,176 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-28 22:06:24,176 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-28 22:06:24,176 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-28 22:06:24,177 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-28 22:06:24,177 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-28 22:06:24,177 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-28 22:06:24,177 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-28 22:06:24,177 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-28 22:06:24,178 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-28 22:06:24,178 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-28 22:06:24,178 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-28 22:06:24,178 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-28 22:06:24,178 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-28 22:06:24,179 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-28 22:06:24,179 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-28 22:06:24,179 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-28 22:06:24,179 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-28 22:06:24,179 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-28 22:06:24,180 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-28 22:06:24,180 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-28 22:06:24,180 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-28 22:06:24,180 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-28 22:06:24,180 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-28 22:06:24,181 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-28 22:06:24,181 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-28 22:06:24,181 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-28 22:06:24,182 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-28 22:06:24,182 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-28 22:06:24,216 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-28 22:06:24,274 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-28 22:06:24,278 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-28 22:06:24,280 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-28 22:06:24,280 INFO L276 PluginConnector]: CDTParser initialized [2018-01-28 22:06:24,281 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/list-ext_flag_false-unreach-call_false-valid-deref.i [2018-01-28 22:06:24,455 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-28 22:06:24,461 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-28 22:06:24,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-28 22:06:24,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-28 22:06:24,467 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-28 22:06:24,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:06:24" (1/1) ... [2018-01-28 22:06:24,470 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5971d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:06:24, skipping insertion in model container [2018-01-28 22:06:24,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:06:24" (1/1) ... [2018-01-28 22:06:24,488 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 22:06:24,528 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-28 22:06:24,640 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 22:06:24,657 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-28 22:06:24,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:06:24 WrapperNode [2018-01-28 22:06:24,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-28 22:06:24,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-28 22:06:24,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-28 22:06:24,665 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-28 22:06:24,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:06:24" (1/1) ... [2018-01-28 22:06:24,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:06:24" (1/1) ... [2018-01-28 22:06:24,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:06:24" (1/1) ... [2018-01-28 22:06:24,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:06:24" (1/1) ... [2018-01-28 22:06:24,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:06:24" (1/1) ... [2018-01-28 22:06:24,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:06:24" (1/1) ... [2018-01-28 22:06:24,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:06:24" (1/1) ... [2018-01-28 22:06:24,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-28 22:06:24,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-28 22:06:24,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-28 22:06:24,701 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-28 22:06:24,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:06:24" (1/1) ... No working directory specified, using /storage/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 [2018-01-28 22:06:24,758 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-28 22:06:24,758 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-28 22:06:24,758 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-01-28 22:06:24,758 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-28 22:06:24,758 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-28 22:06:24,758 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-28 22:06:24,759 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-01-28 22:06:24,759 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-01-28 22:06:24,759 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-28 22:06:24,759 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-28 22:06:24,759 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-28 22:06:24,759 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-01-28 22:06:24,759 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-28 22:06:24,760 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-01-28 22:06:24,760 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-01-28 22:06:24,760 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-01-28 22:06:24,760 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-28 22:06:24,760 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-28 22:06:24,760 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-28 22:06:25,160 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-28 22:06:25,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:06:25 BoogieIcfgContainer [2018-01-28 22:06:25,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-28 22:06:25,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-28 22:06:25,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-28 22:06:25,164 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-28 22:06:25,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 10:06:24" (1/3) ... [2018-01-28 22:06:25,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6c11fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:06:25, skipping insertion in model container [2018-01-28 22:06:25,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:06:24" (2/3) ... [2018-01-28 22:06:25,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d6c11fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:06:25, skipping insertion in model container [2018-01-28 22:06:25,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:06:25" (3/3) ... [2018-01-28 22:06:25,168 INFO L107 eAbstractionObserver]: Analyzing ICFG list-ext_flag_false-unreach-call_false-valid-deref.i [2018-01-28 22:06:25,177 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-28 22:06:25,182 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 35 error locations. [2018-01-28 22:06:25,227 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-28 22:06:25,228 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-28 22:06:25,228 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-28 22:06:25,228 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-28 22:06:25,228 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-28 22:06:25,228 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-28 22:06:25,228 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-28 22:06:25,228 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-28 22:06:25,229 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-28 22:06:25,244 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2018-01-28 22:06:25,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-01-28 22:06:25,249 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:06:25,250 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:06:25,250 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr34EnsuresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-28 22:06:25,254 INFO L82 PathProgramCache]: Analyzing trace with hash -2079417659, now seen corresponding path program 1 times [2018-01-28 22:06:25,256 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:06:25,256 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:06:25,299 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:06:25,299 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:06:25,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:06:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:06:25,360 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:06:25,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:06:25,399 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:06:25,399 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-28 22:06:25,401 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-28 22:06:25,411 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-28 22:06:25,412 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-28 22:06:25,414 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 2 states. [2018-01-28 22:06:25,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:06:25,528 INFO L93 Difference]: Finished difference Result 199 states and 218 transitions. [2018-01-28 22:06:25,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-28 22:06:25,529 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2018-01-28 22:06:25,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:06:25,540 INFO L225 Difference]: With dead ends: 199 [2018-01-28 22:06:25,541 INFO L226 Difference]: Without dead ends: 118 [2018-01-28 22:06:25,545 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-28 22:06:25,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2018-01-28 22:06:25,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2018-01-28 22:06:25,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2018-01-28 22:06:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 123 transitions. [2018-01-28 22:06:25,579 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 123 transitions. Word has length 16 [2018-01-28 22:06:25,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:06:25,580 INFO L432 AbstractCegarLoop]: Abstraction has 118 states and 123 transitions. [2018-01-28 22:06:25,580 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-28 22:06:25,580 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 123 transitions. [2018-01-28 22:06:25,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-28 22:06:25,581 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:06:25,581 INFO L330 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-28 22:06:25,581 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr34EnsuresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-28 22:06:25,581 INFO L82 PathProgramCache]: Analyzing trace with hash 2127174250, now seen corresponding path program 1 times [2018-01-28 22:06:25,581 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:06:25,581 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:06:25,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:06:25,582 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:06:25,582 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:06:25,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:06:25,604 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:06:25,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:06:25,678 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:06:25,678 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:06:25,680 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-28 22:06:25,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-28 22:06:25,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-28 22:06:25,680 INFO L87 Difference]: Start difference. First operand 118 states and 123 transitions. Second operand 4 states. [2018-01-28 22:06:25,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:06:25,801 INFO L93 Difference]: Finished difference Result 296 states and 310 transitions. [2018-01-28 22:06:25,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 22:06:25,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-01-28 22:06:25,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:06:25,804 INFO L225 Difference]: With dead ends: 296 [2018-01-28 22:06:25,804 INFO L226 Difference]: Without dead ends: 192 [2018-01-28 22:06:25,807 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:06:25,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-28 22:06:25,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 121. [2018-01-28 22:06:25,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-01-28 22:06:25,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 126 transitions. [2018-01-28 22:06:25,819 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 126 transitions. Word has length 21 [2018-01-28 22:06:25,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:06:25,819 INFO L432 AbstractCegarLoop]: Abstraction has 121 states and 126 transitions. [2018-01-28 22:06:25,819 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-28 22:06:25,819 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 126 transitions. [2018-01-28 22:06:25,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-28 22:06:25,820 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:06:25,820 INFO L330 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] [2018-01-28 22:06:25,820 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr34EnsuresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-28 22:06:25,821 INFO L82 PathProgramCache]: Analyzing trace with hash 347996743, now seen corresponding path program 1 times [2018-01-28 22:06:25,821 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:06:25,821 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:06:25,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:06:25,822 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:06:25,822 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:06:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:06:25,836 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:06:25,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:06:25,898 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:06:25,898 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:06:25,899 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:06:25,899 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:06:25,899 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:06:25,899 INFO L87 Difference]: Start difference. First operand 121 states and 126 transitions. Second operand 5 states. [2018-01-28 22:06:26,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:06:26,120 INFO L93 Difference]: Finished difference Result 157 states and 167 transitions. [2018-01-28 22:06:26,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-28 22:06:26,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-28 22:06:26,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:06:26,121 INFO L225 Difference]: With dead ends: 157 [2018-01-28 22:06:26,122 INFO L226 Difference]: Without dead ends: 140 [2018-01-28 22:06:26,122 INFO L533 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 [2018-01-28 22:06:26,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2018-01-28 22:06:26,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 125. [2018-01-28 22:06:26,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-01-28 22:06:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 135 transitions. [2018-01-28 22:06:26,131 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 135 transitions. Word has length 23 [2018-01-28 22:06:26,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:06:26,131 INFO L432 AbstractCegarLoop]: Abstraction has 125 states and 135 transitions. [2018-01-28 22:06:26,131 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:06:26,131 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 135 transitions. [2018-01-28 22:06:26,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-28 22:06:26,132 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:06:26,132 INFO L330 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] [2018-01-28 22:06:26,132 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr34EnsuresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-28 22:06:26,132 INFO L82 PathProgramCache]: Analyzing trace with hash 347996744, now seen corresponding path program 1 times [2018-01-28 22:06:26,132 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:06:26,132 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:06:26,133 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:06:26,133 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:06:26,133 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:06:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:06:26,146 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:06:26,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:06:26,246 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:06:26,246 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-28 22:06:26,247 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-28 22:06:26,247 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-28 22:06:26,247 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-01-28 22:06:26,247 INFO L87 Difference]: Start difference. First operand 125 states and 135 transitions. Second operand 5 states. [2018-01-28 22:06:26,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:06:26,425 INFO L93 Difference]: Finished difference Result 187 states and 196 transitions. [2018-01-28 22:06:26,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-28 22:06:26,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2018-01-28 22:06:26,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:06:26,427 INFO L225 Difference]: With dead ends: 187 [2018-01-28 22:06:26,428 INFO L226 Difference]: Without dead ends: 170 [2018-01-28 22:06:26,428 INFO L533 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 [2018-01-28 22:06:26,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2018-01-28 22:06:26,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 160. [2018-01-28 22:06:26,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2018-01-28 22:06:26,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 170 transitions. [2018-01-28 22:06:26,443 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 170 transitions. Word has length 23 [2018-01-28 22:06:26,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:06:26,444 INFO L432 AbstractCegarLoop]: Abstraction has 160 states and 170 transitions. [2018-01-28 22:06:26,444 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-28 22:06:26,444 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 170 transitions. [2018-01-28 22:06:26,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-28 22:06:26,445 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:06:26,445 INFO L330 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] [2018-01-28 22:06:26,445 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr34EnsuresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-28 22:06:26,446 INFO L82 PathProgramCache]: Analyzing trace with hash -301132870, now seen corresponding path program 1 times [2018-01-28 22:06:26,446 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:06:26,446 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:06:26,447 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:06:26,447 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:06:26,447 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:06:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:06:26,468 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:06:26,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:06:26,593 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:06:26,593 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-28 22:06:26,593 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-28 22:06:26,593 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-28 22:06:26,594 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-01-28 22:06:26,594 INFO L87 Difference]: Start difference. First operand 160 states and 170 transitions. Second operand 6 states. [2018-01-28 22:06:26,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:06:26,866 INFO L93 Difference]: Finished difference Result 243 states and 258 transitions. [2018-01-28 22:06:26,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-28 22:06:26,867 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2018-01-28 22:06:26,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:06:26,868 INFO L225 Difference]: With dead ends: 243 [2018-01-28 22:06:26,868 INFO L226 Difference]: Without dead ends: 238 [2018-01-28 22:06:26,869 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-01-28 22:06:26,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2018-01-28 22:06:26,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 206. [2018-01-28 22:06:26,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2018-01-28 22:06:26,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 227 transitions. [2018-01-28 22:06:26,886 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 227 transitions. Word has length 39 [2018-01-28 22:06:26,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:06:26,887 INFO L432 AbstractCegarLoop]: Abstraction has 206 states and 227 transitions. [2018-01-28 22:06:26,887 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-28 22:06:26,887 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 227 transitions. [2018-01-28 22:06:26,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-01-28 22:06:26,889 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:06:26,889 INFO L330 BasicCegarLoop]: trace histogram [2, 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] [2018-01-28 22:06:26,889 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr34EnsuresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-28 22:06:26,890 INFO L82 PathProgramCache]: Analyzing trace with hash -2111474610, now seen corresponding path program 1 times [2018-01-28 22:06:26,890 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:06:26,890 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:06:26,891 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:06:26,891 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:06:26,891 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:06:26,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-28 22:06:26,906 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-28 22:06:26,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-28 22:06:26,968 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-28 22:06:26,968 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-28 22:06:26,968 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-28 22:06:26,969 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-28 22:06:26,969 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-28 22:06:26,970 INFO L87 Difference]: Start difference. First operand 206 states and 227 transitions. Second operand 6 states. [2018-01-28 22:06:27,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-28 22:06:27,123 INFO L93 Difference]: Finished difference Result 277 states and 290 transitions. [2018-01-28 22:06:27,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-28 22:06:27,124 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2018-01-28 22:06:27,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-28 22:06:27,125 INFO L225 Difference]: With dead ends: 277 [2018-01-28 22:06:27,125 INFO L226 Difference]: Without dead ends: 206 [2018-01-28 22:06:27,126 INFO L533 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-28 22:06:27,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2018-01-28 22:06:27,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 172. [2018-01-28 22:06:27,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2018-01-28 22:06:27,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 182 transitions. [2018-01-28 22:06:27,135 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 182 transitions. Word has length 42 [2018-01-28 22:06:27,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-28 22:06:27,135 INFO L432 AbstractCegarLoop]: Abstraction has 172 states and 182 transitions. [2018-01-28 22:06:27,135 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-28 22:06:27,135 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 182 transitions. [2018-01-28 22:06:27,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-01-28 22:06:27,136 INFO L322 BasicCegarLoop]: Found error trace [2018-01-28 22:06:27,136 INFO L330 BasicCegarLoop]: trace histogram [2, 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] [2018-01-28 22:06:27,136 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr34EnsuresViolation, mainErr28RequiresViolation, mainErr33RequiresViolation, mainErr26RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr31RequiresViolation, mainErr29RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr25RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr32RequiresViolation, mainErr27RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr30RequiresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr24RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-01-28 22:06:27,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1707014286, now seen corresponding path program 1 times [2018-01-28 22:06:27,136 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-28 22:06:27,136 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-28 22:06:27,137 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:06:27,137 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-28 22:06:27,137 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-28 22:06:27,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-28 22:06:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-28 22:06:27,193 INFO L389 BasicCegarLoop]: Counterexample might be feasible [2018-01-28 22:06:27,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 10:06:27 BoogieIcfgContainer [2018-01-28 22:06:27,233 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-28 22:06:27,234 INFO L168 Benchmark]: Toolchain (without parser) took 2778.81 ms. Allocated memory was 308.3 MB in the beginning and 467.7 MB in the end (delta: 159.4 MB). Free memory was 267.3 MB in the beginning and 437.9 MB in the end (delta: -170.6 MB). Peak memory consumption was 84.2 MB. Max. memory is 5.3 GB. [2018-01-28 22:06:27,236 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 308.3 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-28 22:06:27,236 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.87 ms. Allocated memory is still 308.3 MB. Free memory was 267.3 MB in the beginning and 255.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. [2018-01-28 22:06:27,236 INFO L168 Benchmark]: Boogie Preprocessor took 35.66 ms. Allocated memory is still 308.3 MB. Free memory was 255.4 MB in the beginning and 253.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-28 22:06:27,237 INFO L168 Benchmark]: RCFGBuilder took 459.92 ms. Allocated memory is still 308.3 MB. Free memory was 253.4 MB in the beginning and 224.8 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 5.3 GB. [2018-01-28 22:06:27,237 INFO L168 Benchmark]: TraceAbstraction took 2072.15 ms. Allocated memory was 308.3 MB in the beginning and 467.7 MB in the end (delta: 159.4 MB). Free memory was 222.8 MB in the beginning and 437.9 MB in the end (delta: -215.1 MB). Peak memory consumption was 39.7 MB. Max. memory is 5.3 GB. [2018-01-28 22:06:27,239 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 308.3 MB. Free memory is still 273.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 202.87 ms. Allocated memory is still 308.3 MB. Free memory was 267.3 MB in the beginning and 255.4 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 35.66 ms. Allocated memory is still 308.3 MB. Free memory was 255.4 MB in the beginning and 253.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 459.92 ms. Allocated memory is still 308.3 MB. Free memory was 253.4 MB in the beginning and 224.8 MB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2072.15 ms. Allocated memory was 308.3 MB in the beginning and 467.7 MB in the end (delta: 159.4 MB). Free memory was 222.8 MB in the beginning and 437.9 MB in the end (delta: -215.1 MB). Peak memory consumption was 39.7 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L628] List p, a, t; [L629] EXPR, FCALL malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={17:0}] [L629] a = (List) malloc(sizeof(struct node)) VAL [a={17:0}, malloc(sizeof(struct node))={17:0}] [L630] COND FALSE !(a == 0) VAL [a={17:0}, malloc(sizeof(struct node))={17:0}] [L631] p = a VAL [a={17:0}, malloc(sizeof(struct node))={17:0}, p={17:0}] [L632] int i = 0; VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}] [L633] i < 20 && __VERIFIER_nondet_int() VAL [a={17:0}, i=0, i < 20 && __VERIFIER_nondet_int()=1, malloc(sizeof(struct node))={17:0}, p={17:0}] [L633] i < 20 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={17:0}, i=0, i < 20 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={17:0}, p={17:0}] [L633] COND FALSE !(i < 20 && __VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, a={17:0}, i=0, i < 20 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={17:0}, p={17:0}] [L646] FCALL p->h = 3 VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}] [L647] p = a VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}] [L648] EXPR, FCALL p->h VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, p->h=3] [L648] COND FALSE !(p->h != 3) VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, p->h=3] [L659] EXPR, FCALL p->h VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, p->h=3] [L659] COND FALSE !(p->h != 3 || i > 20) VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, p->h=3] [L661] p = a VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}] [L662] EXPR, FCALL p->n VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, p->n={20:15}] [L662] COND TRUE p->n != 0 VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, p->n={20:15}] [L663] EXPR, FCALL p->n VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, p->n={20:15}] [L663] t = p->n VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, p->n={20:15}, t={20:15}] [L664] FCALL free(p) VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={17:0}, t={20:15}] [L665] p = t VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={20:15}, t={20:15}] [L662] FCALL p->n VAL [a={17:0}, i=0, malloc(sizeof(struct node))={17:0}, p={20:15}, t={20:15}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 131 locations, 35 error locations. UNSAFE Result, 2.0s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 1.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 583 SDtfs, 1147 SDslu, 890 SDs, 0 SdLazy, 493 SolverSat, 87 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=206occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 162 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 207 NumberOfCodeBlocks, 207 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 22718 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/list-ext_flag_false-unreach-call_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-28_22-06-27-247.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/list-ext_flag_false-unreach-call_false-valid-deref.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-28_22-06-27-247.csv Received shutdown request...