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/list-properties/list_true-unreach-call_false-valid-memtrack.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-a74eeac-m [2018-02-02 21:10:30,919 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 21:10:30,921 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 21:10:30,933 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 21:10:30,933 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 21:10:30,933 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 21:10:30,934 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 21:10:30,936 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 21:10:30,937 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 21:10:30,938 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 21:10:30,939 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 21:10:30,939 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 21:10:30,940 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 21:10:30,941 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 21:10:30,941 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 21:10:30,943 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 21:10:30,944 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 21:10:30,946 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 21:10:30,947 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 21:10:30,948 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 21:10:30,950 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-02 21:10:30,950 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-02 21:10:30,950 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-02 21:10:30,951 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-02 21:10:30,951 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-02 21:10:30,952 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-02 21:10:30,953 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-02 21:10:30,953 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-02 21:10:30,953 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-02 21:10:30,953 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 21:10:30,953 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 21:10:30,954 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 21:10:30,962 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 21:10:30,963 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 21:10:30,963 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 21:10:30,964 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 21:10:30,964 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 21:10:30,964 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 21:10:30,964 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 21:10:30,964 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 21:10:30,964 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 21:10:30,964 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 21:10:30,965 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 21:10:30,965 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 21:10:30,965 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 21:10:30,965 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 21:10:30,965 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 21:10:30,965 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 21:10:30,965 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 21:10:30,965 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 21:10:30,965 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 21:10:30,965 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 21:10:30,966 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 21:10:30,966 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 21:10:30,966 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 21:10:30,966 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 21:10:30,966 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-02 21:10:30,999 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 21:10:31,009 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 21:10:31,012 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 21:10:31,013 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 21:10:31,013 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 21:10:31,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_true-unreach-call_false-valid-memtrack.i [2018-02-02 21:10:31,131 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 21:10:31,132 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 21:10:31,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 21:10:31,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 21:10:31,137 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 21:10:31,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:10:31" (1/1) ... [2018-02-02 21:10:31,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f415149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:31, skipping insertion in model container [2018-02-02 21:10:31,140 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:10:31" (1/1) ... [2018-02-02 21:10:31,153 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 21:10:31,184 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 21:10:31,270 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 21:10:31,283 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 21:10:31,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:31 WrapperNode [2018-02-02 21:10:31,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 21:10:31,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 21:10:31,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 21:10:31,289 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 21:10:31,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:31" (1/1) ... [2018-02-02 21:10:31,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:31" (1/1) ... [2018-02-02 21:10:31,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:31" (1/1) ... [2018-02-02 21:10:31,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:31" (1/1) ... [2018-02-02 21:10:31,316 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:31" (1/1) ... [2018-02-02 21:10:31,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:31" (1/1) ... [2018-02-02 21:10:31,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:31" (1/1) ... [2018-02-02 21:10:31,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 21:10:31,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 21:10:31,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 21:10:31,323 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 21:10:31,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:31" (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 21:10:31,371 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 21:10:31,371 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 21:10:31,371 INFO L136 BoogieDeclarations]: Found implementation of procedure exit [2018-02-02 21:10:31,372 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 21:10:31,372 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-02-02 21:10:31,372 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-02-02 21:10:31,372 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 21:10:31,372 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 21:10:31,372 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 21:10:31,372 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 21:10:31,372 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 21:10:31,373 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-02-02 21:10:31,373 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-02-02 21:10:31,373 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-02-02 21:10:31,373 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-02-02 21:10:31,373 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 21:10:31,373 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 21:10:31,373 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 21:10:31,617 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 21:10:31,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:10:31 BoogieIcfgContainer [2018-02-02 21:10:31,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 21:10:31,619 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 21:10:31,619 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 21:10:31,621 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 21:10:31,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:10:31" (1/3) ... [2018-02-02 21:10:31,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bcc595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:10:31, skipping insertion in model container [2018-02-02 21:10:31,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:10:31" (2/3) ... [2018-02-02 21:10:31,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bcc595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:10:31, skipping insertion in model container [2018-02-02 21:10:31,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:10:31" (3/3) ... [2018-02-02 21:10:31,625 INFO L107 eAbstractionObserver]: Analyzing ICFG list_true-unreach-call_false-valid-memtrack.i [2018-02-02 21:10:31,632 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 21:10:31,639 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 25 error locations. [2018-02-02 21:10:31,673 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 21:10:31,674 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 21:10:31,674 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 21:10:31,674 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 21:10:31,674 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 21:10:31,674 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 21:10:31,674 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 21:10:31,675 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 21:10:31,675 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 21:10:31,688 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-02-02 21:10:31,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-02-02 21:10:31,697 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:10:31,697 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:10:31,698 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-02-02 21:10:31,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1577909781, now seen corresponding path program 1 times [2018-02-02 21:10:31,703 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:10:31,704 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:10:31,747 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:31,748 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:10:31,748 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:31,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:10:31,786 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:10:31,819 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 21:10:31,821 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:10:31,821 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 21:10:31,822 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-02-02 21:10:31,831 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-02-02 21:10:31,832 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-02-02 21:10:31,833 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 2 states. [2018-02-02 21:10:31,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:10:31,850 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2018-02-02 21:10:31,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-02-02 21:10:31,906 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2018-02-02 21:10:31,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:10:31,912 INFO L225 Difference]: With dead ends: 79 [2018-02-02 21:10:31,912 INFO L226 Difference]: Without dead ends: 70 [2018-02-02 21:10:31,913 INFO L554 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 [2018-02-02 21:10:31,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-02-02 21:10:31,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2018-02-02 21:10:31,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-02-02 21:10:31,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 73 transitions. [2018-02-02 21:10:31,940 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 73 transitions. Word has length 12 [2018-02-02 21:10:31,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:10:31,941 INFO L432 AbstractCegarLoop]: Abstraction has 70 states and 73 transitions. [2018-02-02 21:10:31,941 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-02-02 21:10:31,941 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 73 transitions. [2018-02-02 21:10:31,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-02 21:10:31,941 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:10:31,941 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:10:31,941 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-02-02 21:10:31,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1669671355, now seen corresponding path program 1 times [2018-02-02 21:10:31,942 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:10:31,942 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:10:31,943 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:31,943 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:10:31,943 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:31,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:10:31,958 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:10:32,011 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 21:10:32,011 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:10:32,011 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 21:10:32,013 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 21:10:32,013 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 21:10:32,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 21:10:32,013 INFO L87 Difference]: Start difference. First operand 70 states and 73 transitions. Second operand 5 states. [2018-02-02 21:10:32,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:10:32,133 INFO L93 Difference]: Finished difference Result 81 states and 86 transitions. [2018-02-02 21:10:32,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 21:10:32,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-02-02 21:10:32,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:10:32,134 INFO L225 Difference]: With dead ends: 81 [2018-02-02 21:10:32,134 INFO L226 Difference]: Without dead ends: 81 [2018-02-02 21:10:32,135 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 21:10:32,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-02-02 21:10:32,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 76. [2018-02-02 21:10:32,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-02-02 21:10:32,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 86 transitions. [2018-02-02 21:10:32,140 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 86 transitions. Word has length 13 [2018-02-02 21:10:32,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:10:32,140 INFO L432 AbstractCegarLoop]: Abstraction has 76 states and 86 transitions. [2018-02-02 21:10:32,140 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 21:10:32,140 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 86 transitions. [2018-02-02 21:10:32,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-02 21:10:32,140 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:10:32,140 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:10:32,140 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-02-02 21:10:32,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1669671356, now seen corresponding path program 1 times [2018-02-02 21:10:32,141 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:10:32,141 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:10:32,141 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:32,141 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:10:32,142 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:10:32,154 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:10:32,215 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 21:10:32,215 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:10:32,215 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 21:10:32,215 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 21:10:32,216 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 21:10:32,216 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 21:10:32,216 INFO L87 Difference]: Start difference. First operand 76 states and 86 transitions. Second operand 5 states. [2018-02-02 21:10:32,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:10:32,344 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2018-02-02 21:10:32,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 21:10:32,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-02-02 21:10:32,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:10:32,346 INFO L225 Difference]: With dead ends: 102 [2018-02-02 21:10:32,346 INFO L226 Difference]: Without dead ends: 102 [2018-02-02 21:10:32,346 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 21:10:32,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-02-02 21:10:32,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 93. [2018-02-02 21:10:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-02-02 21:10:32,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2018-02-02 21:10:32,352 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 13 [2018-02-02 21:10:32,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:10:32,352 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2018-02-02 21:10:32,352 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 21:10:32,353 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2018-02-02 21:10:32,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-02 21:10:32,353 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:10:32,353 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:10:32,353 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-02-02 21:10:32,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1462598724, now seen corresponding path program 1 times [2018-02-02 21:10:32,354 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:10:32,354 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:10:32,355 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:32,355 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:10:32,355 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:10:32,370 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:10:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 21:10:32,424 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:10:32,424 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 21:10:32,424 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 21:10:32,424 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 21:10:32,425 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-02 21:10:32,425 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand 7 states. [2018-02-02 21:10:32,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:10:32,673 INFO L93 Difference]: Finished difference Result 189 states and 204 transitions. [2018-02-02 21:10:32,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 21:10:32,675 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-02-02 21:10:32,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:10:32,679 INFO L225 Difference]: With dead ends: 189 [2018-02-02 21:10:32,679 INFO L226 Difference]: Without dead ends: 189 [2018-02-02 21:10:32,679 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-02-02 21:10:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-02-02 21:10:32,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 97. [2018-02-02 21:10:32,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-02-02 21:10:32,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2018-02-02 21:10:32,684 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 23 [2018-02-02 21:10:32,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:10:32,685 INFO L432 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2018-02-02 21:10:32,685 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 21:10:32,685 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2018-02-02 21:10:32,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-02-02 21:10:32,685 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:10:32,685 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:10:32,685 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-02-02 21:10:32,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1462598725, now seen corresponding path program 1 times [2018-02-02 21:10:32,686 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:10:32,686 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:10:32,686 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:32,686 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:10:32,687 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:32,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:10:32,700 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:10:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 21:10:32,776 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:10:32,776 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 21:10:32,776 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 21:10:32,776 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 21:10:32,776 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-02 21:10:32,776 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand 7 states. [2018-02-02 21:10:33,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:10:33,107 INFO L93 Difference]: Finished difference Result 186 states and 204 transitions. [2018-02-02 21:10:33,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-02-02 21:10:33,107 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-02-02 21:10:33,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:10:33,108 INFO L225 Difference]: With dead ends: 186 [2018-02-02 21:10:33,108 INFO L226 Difference]: Without dead ends: 186 [2018-02-02 21:10:33,109 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2018-02-02 21:10:33,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2018-02-02 21:10:33,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 80. [2018-02-02 21:10:33,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2018-02-02 21:10:33,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2018-02-02 21:10:33,119 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 23 [2018-02-02 21:10:33,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:10:33,120 INFO L432 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2018-02-02 21:10:33,120 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 21:10:33,120 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2018-02-02 21:10:33,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-02-02 21:10:33,120 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:10:33,120 INFO L351 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] [2018-02-02 21:10:33,120 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-02-02 21:10:33,120 INFO L82 PathProgramCache]: Analyzing trace with hash 919312261, now seen corresponding path program 1 times [2018-02-02 21:10:33,121 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:10:33,121 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:10:33,121 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:33,121 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:10:33,121 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:33,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:10:33,131 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:10:33,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 21:10:33,165 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:10:33,165 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 21:10:33,165 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 21:10:33,166 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 21:10:33,166 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-02-02 21:10:33,166 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand 6 states. [2018-02-02 21:10:33,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:10:33,325 INFO L93 Difference]: Finished difference Result 135 states and 143 transitions. [2018-02-02 21:10:33,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 21:10:33,325 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-02-02 21:10:33,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:10:33,326 INFO L225 Difference]: With dead ends: 135 [2018-02-02 21:10:33,326 INFO L226 Difference]: Without dead ends: 135 [2018-02-02 21:10:33,327 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-02-02 21:10:33,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-02-02 21:10:33,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 91. [2018-02-02 21:10:33,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-02-02 21:10:33,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2018-02-02 21:10:33,330 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 24 [2018-02-02 21:10:33,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:10:33,331 INFO L432 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2018-02-02 21:10:33,331 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 21:10:33,331 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2018-02-02 21:10:33,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-02 21:10:33,332 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:10:33,332 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:10:33,332 INFO L371 AbstractCegarLoop]: === Iteration 7 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-02-02 21:10:33,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1842256062, now seen corresponding path program 1 times [2018-02-02 21:10:33,332 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:10:33,333 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:10:33,334 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:33,334 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:10:33,334 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:10:33,344 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:10:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 21:10:33,400 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:10:33,400 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 21:10:33,400 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 21:10:33,400 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 21:10:33,400 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-02 21:10:33,400 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 7 states. [2018-02-02 21:10:33,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:10:33,547 INFO L93 Difference]: Finished difference Result 125 states and 136 transitions. [2018-02-02 21:10:33,547 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-02-02 21:10:33,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-02-02 21:10:33,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:10:33,548 INFO L225 Difference]: With dead ends: 125 [2018-02-02 21:10:33,548 INFO L226 Difference]: Without dead ends: 125 [2018-02-02 21:10:33,548 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-02-02 21:10:33,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-02-02 21:10:33,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 89. [2018-02-02 21:10:33,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-02-02 21:10:33,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2018-02-02 21:10:33,552 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 26 [2018-02-02 21:10:33,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:10:33,553 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2018-02-02 21:10:33,553 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 21:10:33,553 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2018-02-02 21:10:33,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-02-02 21:10:33,553 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:10:33,554 INFO L351 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:10:33,554 INFO L371 AbstractCegarLoop]: === Iteration 8 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-02-02 21:10:33,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1842256063, now seen corresponding path program 1 times [2018-02-02 21:10:33,554 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:10:33,554 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:10:33,555 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:33,555 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:10:33,555 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:10:33,566 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:10:33,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-02-02 21:10:33,627 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:10:33,627 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 21:10:33,627 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 21:10:33,628 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 21:10:33,628 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-02 21:10:33,628 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand 7 states. [2018-02-02 21:10:33,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:10:33,771 INFO L93 Difference]: Finished difference Result 120 states and 133 transitions. [2018-02-02 21:10:33,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-02-02 21:10:33,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2018-02-02 21:10:33,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:10:33,771 INFO L225 Difference]: With dead ends: 120 [2018-02-02 21:10:33,772 INFO L226 Difference]: Without dead ends: 120 [2018-02-02 21:10:33,772 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2018-02-02 21:10:33,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-02-02 21:10:33,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 75. [2018-02-02 21:10:33,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-02-02 21:10:33,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 83 transitions. [2018-02-02 21:10:33,775 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 83 transitions. Word has length 26 [2018-02-02 21:10:33,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:10:33,775 INFO L432 AbstractCegarLoop]: Abstraction has 75 states and 83 transitions. [2018-02-02 21:10:33,775 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 21:10:33,775 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 83 transitions. [2018-02-02 21:10:33,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-02-02 21:10:33,776 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:10:33,776 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:10:33,776 INFO L371 AbstractCegarLoop]: === Iteration 9 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr18RequiresViolation, mainErr23RequiresViolation, mainErr0RequiresViolation, mainErr21RequiresViolation, mainErr3RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr19RequiresViolation, mainErr22RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr9RequiresViolation, mainErr24EnsuresViolation, mainErr7RequiresViolation, mainErr20RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr4RequiresViolation, mainErr14RequiresViolation]=== [2018-02-02 21:10:33,776 INFO L82 PathProgramCache]: Analyzing trace with hash -1313779944, now seen corresponding path program 1 times [2018-02-02 21:10:33,776 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:10:33,776 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:10:33,777 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:33,777 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:10:33,777 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:10:33,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 21:10:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-02-02 21:10:33,808 INFO L410 BasicCegarLoop]: Counterexample might be feasible [2018-02-02 21:10:33,816 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-02-02 21:10:33,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.02 09:10:33 BoogieIcfgContainer [2018-02-02 21:10:33,826 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-02-02 21:10:33,827 INFO L168 Benchmark]: Toolchain (without parser) took 2695.58 ms. Allocated memory was 398.5 MB in the beginning and 622.3 MB in the end (delta: 223.9 MB). Free memory was 355.1 MB in the beginning and 422.1 MB in the end (delta: -67.0 MB). Peak memory consumption was 156.9 MB. Max. memory is 5.3 GB. [2018-02-02 21:10:33,827 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 398.5 MB. Free memory is still 361.8 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 21:10:33,828 INFO L168 Benchmark]: CACSL2BoogieTranslator took 155.88 ms. Allocated memory is still 398.5 MB. Free memory was 355.1 MB in the beginning and 344.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 5.3 GB. [2018-02-02 21:10:33,828 INFO L168 Benchmark]: Boogie Preprocessor took 33.09 ms. Allocated memory is still 398.5 MB. Free memory was 344.4 MB in the beginning and 343.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. [2018-02-02 21:10:33,828 INFO L168 Benchmark]: RCFGBuilder took 295.70 ms. Allocated memory is still 398.5 MB. Free memory was 343.1 MB in the beginning and 316.6 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 5.3 GB. [2018-02-02 21:10:33,829 INFO L168 Benchmark]: TraceAbstraction took 2207.33 ms. Allocated memory was 398.5 MB in the beginning and 622.3 MB in the end (delta: 223.9 MB). Free memory was 316.6 MB in the beginning and 422.1 MB in the end (delta: -105.5 MB). Peak memory consumption was 118.4 MB. Max. memory is 5.3 GB. [2018-02-02 21:10:33,830 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 398.5 MB. Free memory is still 361.8 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 155.88 ms. Allocated memory is still 398.5 MB. Free memory was 355.1 MB in the beginning and 344.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 33.09 ms. Allocated memory is still 398.5 MB. Free memory was 344.4 MB in the beginning and 343.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 5.3 GB. * RCFGBuilder took 295.70 ms. Allocated memory is still 398.5 MB. Free memory was 343.1 MB in the beginning and 316.6 MB in the end (delta: 26.5 MB). Peak memory consumption was 26.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2207.33 ms. Allocated memory was 398.5 MB in the beginning and 622.3 MB in the end (delta: 223.9 MB). Free memory was 316.6 MB in the beginning and 422.1 MB in the end (delta: -105.5 MB). Peak memory consumption was 118.4 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 626]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 626. Possible FailurePath: [L627] EXPR, FCALL malloc(sizeof(struct node)) VAL [malloc(sizeof(struct node))={11:0}] [L627] List a = (List) malloc(sizeof(struct node)); VAL [a={11:0}, malloc(sizeof(struct node))={11:0}] [L628] COND FALSE !(a == 0) VAL [a={11:0}, malloc(sizeof(struct node))={11:0}] [L629] List t; [L630] List p = a; VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}] [L631] COND FALSE !(__VERIFIER_nondet_int()) [L638] COND FALSE !(__VERIFIER_nondet_int()) [L645] FCALL p->h = 3 VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}] [L646] p = a VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}] [L647] EXPR, FCALL p->h VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}, p->h=3] [L647] COND FALSE !(p->h == 1) [L649] EXPR, FCALL p->h VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}, p->h=3] [L649] COND FALSE !(p->h == 2) [L651] EXPR, FCALL p->h VAL [a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}, p->h=3] [L651] COND FALSE !(p->h != 3) [L653] return 0; VAL [\result=0, a={11:0}, malloc(sizeof(struct node))={11:0}, p={11:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 81 locations, 25 error locations. UNSAFE Result, 2.1s OverallTime, 9 OverallIterations, 2 TraceHistogramMax, 1.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 464 SDtfs, 984 SDslu, 997 SDs, 0 SdLazy, 1156 SolverSat, 107 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=4, 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, 8 MinimizatonAttempts, 337 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 187 NumberOfCodeBlocks, 187 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 152 ConstructedInterpolants, 0 QuantifiedInterpolants, 11512 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 16/16 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/list_true-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_21-10-33-836.csv Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/list_true-unreach-call_false-valid-memtrack.i_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-02-02_21-10-33-836.csv Received shutdown request...