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/ldv-memsafety/ArraysOfVariableLength2_true-valid-memsafety.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-a74eeac-m [2018-02-02 21:05:53,828 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-02-02 21:05:53,830 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-02-02 21:05:53,842 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-02-02 21:05:53,842 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-02-02 21:05:53,843 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-02-02 21:05:53,844 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-02-02 21:05:53,845 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-02-02 21:05:53,847 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-02-02 21:05:53,847 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-02-02 21:05:53,848 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-02-02 21:05:53,848 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-02-02 21:05:53,849 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-02-02 21:05:53,850 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-02-02 21:05:53,851 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-02-02 21:05:53,853 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-02-02 21:05:53,855 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-02-02 21:05:53,856 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-02-02 21:05:53,857 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-02-02 21:05:53,858 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-02-02 21:05:53,860 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-02-02 21:05:53,860 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-02-02 21:05:53,860 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-02-02 21:05:53,861 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-02-02 21:05:53,862 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-02-02 21:05:53,863 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-02-02 21:05:53,863 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-02-02 21:05:53,863 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-02-02 21:05:53,864 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-02-02 21:05:53,864 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-02-02 21:05:53,864 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-02-02 21:05:53,865 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 21:05:53,874 INFO L110 SettingsManager]: Loading preferences was successful [2018-02-02 21:05:53,874 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-02-02 21:05:53,875 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-02-02 21:05:53,875 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-02-02 21:05:53,875 INFO L133 SettingsManager]: * Use SBE=true [2018-02-02 21:05:53,875 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-02-02 21:05:53,876 INFO L133 SettingsManager]: * sizeof long=4 [2018-02-02 21:05:53,876 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-02-02 21:05:53,876 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-02-02 21:05:53,876 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-02-02 21:05:53,876 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-02-02 21:05:53,876 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-02-02 21:05:53,876 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-02-02 21:05:53,876 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-02-02 21:05:53,877 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-02-02 21:05:53,877 INFO L133 SettingsManager]: * sizeof long double=12 [2018-02-02 21:05:53,877 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-02-02 21:05:53,877 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-02-02 21:05:53,877 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-02-02 21:05:53,877 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-02-02 21:05:53,877 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-02-02 21:05:53,878 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-02-02 21:05:53,878 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-02-02 21:05:53,878 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-02-02 21:05:53,878 INFO L133 SettingsManager]: * Trace refinement strategy=SMTINTERPOL [2018-02-02 21:05:53,906 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-02-02 21:05:53,919 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-02-02 21:05:53,924 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-02-02 21:05:53,926 INFO L271 PluginConnector]: Initializing CDTParser... [2018-02-02 21:05:53,926 INFO L276 PluginConnector]: CDTParser initialized [2018-02-02 21:05:53,927 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_true-valid-memsafety.c [2018-02-02 21:05:54,009 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-02-02 21:05:54,010 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-02-02 21:05:54,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-02-02 21:05:54,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-02-02 21:05:54,017 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-02-02 21:05:54,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:05:54" (1/1) ... [2018-02-02 21:05:54,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46cef2b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:05:54, skipping insertion in model container [2018-02-02 21:05:54,020 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.02 09:05:54" (1/1) ... [2018-02-02 21:05:54,034 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 21:05:54,050 INFO L153 Dispatcher]: Using SV-COMP mode [2018-02-02 21:05:54,138 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 21:05:54,150 INFO L450 PostProcessor]: Settings: Checked method=main [2018-02-02 21:05:54,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:05:54 WrapperNode [2018-02-02 21:05:54,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-02-02 21:05:54,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-02-02 21:05:54,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-02-02 21:05:54,155 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-02-02 21:05:54,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:05:54" (1/1) ... [2018-02-02 21:05:54,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:05:54" (1/1) ... [2018-02-02 21:05:54,170 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:05:54" (1/1) ... [2018-02-02 21:05:54,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:05:54" (1/1) ... [2018-02-02 21:05:54,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:05:54" (1/1) ... [2018-02-02 21:05:54,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:05:54" (1/1) ... [2018-02-02 21:05:54,175 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:05:54" (1/1) ... [2018-02-02 21:05:54,176 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-02-02 21:05:54,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-02-02 21:05:54,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-02-02 21:05:54,176 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-02-02 21:05:54,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:05:54" (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 21:05:54,220 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-02-02 21:05:54,220 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-02-02 21:05:54,220 INFO L136 BoogieDeclarations]: Found implementation of procedure bar [2018-02-02 21:05:54,220 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-02-02 21:05:54,220 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-02-02 21:05:54,220 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-02-02 21:05:54,220 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-02-02 21:05:54,220 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-02-02 21:05:54,220 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-02-02 21:05:54,221 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-02-02 21:05:54,221 INFO L128 BoogieDeclarations]: Found specification of procedure bar [2018-02-02 21:05:54,221 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-02-02 21:05:54,221 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-02-02 21:05:54,221 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-02-02 21:05:54,221 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-02-02 21:05:54,407 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-02-02 21:05:54,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:05:54 BoogieIcfgContainer [2018-02-02 21:05:54,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-02-02 21:05:54,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-02-02 21:05:54,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-02-02 21:05:54,411 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-02-02 21:05:54,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.02 09:05:54" (1/3) ... [2018-02-02 21:05:54,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524d0b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:05:54, skipping insertion in model container [2018-02-02 21:05:54,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.02 09:05:54" (2/3) ... [2018-02-02 21:05:54,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@524d0b29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.02 09:05:54, skipping insertion in model container [2018-02-02 21:05:54,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.02 09:05:54" (3/3) ... [2018-02-02 21:05:54,413 INFO L107 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_true-valid-memsafety.c [2018-02-02 21:05:54,423 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-02-02 21:05:54,428 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-02-02 21:05:54,455 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-02-02 21:05:54,455 INFO L323 AbstractCegarLoop]: Hoare is false [2018-02-02 21:05:54,455 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-02-02 21:05:54,455 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-02-02 21:05:54,455 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-02-02 21:05:54,455 INFO L327 AbstractCegarLoop]: Difference is false [2018-02-02 21:05:54,455 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-02-02 21:05:54,456 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-02-02 21:05:54,456 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-02-02 21:05:54,465 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states. [2018-02-02 21:05:54,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-02-02 21:05:54,473 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:05:54,473 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:05:54,474 INFO L371 AbstractCegarLoop]: === Iteration 1 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 21:05:54,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1613294992, now seen corresponding path program 1 times [2018-02-02 21:05:54,477 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:05:54,477 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:05:54,505 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:05:54,506 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:05:54,506 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:05:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:05:54,532 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:05:54,555 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 21:05:54,557 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:05:54,557 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-02-02 21:05:54,558 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-02-02 21:05:54,565 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-02-02 21:05:54,565 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-02-02 21:05:54,567 INFO L87 Difference]: Start difference. First operand 68 states. Second operand 2 states. [2018-02-02 21:05:54,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:05:54,582 INFO L93 Difference]: Finished difference Result 68 states and 73 transitions. [2018-02-02 21:05:54,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-02-02 21:05:54,582 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2018-02-02 21:05:54,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:05:54,589 INFO L225 Difference]: With dead ends: 68 [2018-02-02 21:05:54,589 INFO L226 Difference]: Without dead ends: 65 [2018-02-02 21:05:54,591 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 21:05:54,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-02-02 21:05:54,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2018-02-02 21:05:54,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-02-02 21:05:54,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-02-02 21:05:54,617 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 13 [2018-02-02 21:05:54,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:05:54,617 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-02-02 21:05:54,617 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-02-02 21:05:54,617 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-02-02 21:05:54,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-02-02 21:05:54,618 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:05:54,618 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:05:54,618 INFO L371 AbstractCegarLoop]: === Iteration 2 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 21:05:54,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1969953325, now seen corresponding path program 1 times [2018-02-02 21:05:54,619 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:05:54,619 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:05:54,620 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:05:54,620 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:05:54,620 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:05:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:05:54,631 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:05:54,716 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 21:05:54,716 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:05:54,716 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-02-02 21:05:54,717 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-02-02 21:05:54,717 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-02-02 21:05:54,717 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 21:05:54,717 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 3 states. [2018-02-02 21:05:54,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:05:54,764 INFO L93 Difference]: Finished difference Result 71 states and 76 transitions. [2018-02-02 21:05:54,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-02-02 21:05:54,764 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-02-02 21:05:54,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:05:54,766 INFO L225 Difference]: With dead ends: 71 [2018-02-02 21:05:54,767 INFO L226 Difference]: Without dead ends: 71 [2018-02-02 21:05:54,767 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-02-02 21:05:54,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-02-02 21:05:54,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2018-02-02 21:05:54,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-02-02 21:05:54,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2018-02-02 21:05:54,777 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 14 [2018-02-02 21:05:54,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:05:54,777 INFO L432 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2018-02-02 21:05:54,777 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-02-02 21:05:54,777 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2018-02-02 21:05:54,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-02-02 21:05:54,778 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:05:54,778 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:05:54,778 INFO L371 AbstractCegarLoop]: === Iteration 3 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 21:05:54,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1297061679, now seen corresponding path program 1 times [2018-02-02 21:05:54,778 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:05:54,779 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:05:54,779 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:05:54,780 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:05:54,780 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:05:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:05:54,797 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:05:54,866 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 21:05:54,866 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:05:54,866 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-02-02 21:05:54,866 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-02-02 21:05:54,866 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-02-02 21:05:54,866 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-02-02 21:05:54,866 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 6 states. [2018-02-02 21:05:54,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:05:54,967 INFO L93 Difference]: Finished difference Result 85 states and 91 transitions. [2018-02-02 21:05:54,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-02-02 21:05:54,968 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-02-02 21:05:54,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:05:54,969 INFO L225 Difference]: With dead ends: 85 [2018-02-02 21:05:54,969 INFO L226 Difference]: Without dead ends: 85 [2018-02-02 21:05:54,969 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-02-02 21:05:54,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-02-02 21:05:54,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2018-02-02 21:05:54,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-02-02 21:05:54,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 85 transitions. [2018-02-02 21:05:54,975 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 85 transitions. Word has length 17 [2018-02-02 21:05:54,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:05:54,975 INFO L432 AbstractCegarLoop]: Abstraction has 79 states and 85 transitions. [2018-02-02 21:05:54,975 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-02-02 21:05:54,976 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 85 transitions. [2018-02-02 21:05:54,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-02 21:05:54,976 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:05:54,976 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:05:54,976 INFO L371 AbstractCegarLoop]: === Iteration 4 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 21:05:54,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1600184185, now seen corresponding path program 1 times [2018-02-02 21:05:54,977 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:05:54,977 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:05:54,978 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:05:54,978 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:05:54,978 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:05:54,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:05:54,989 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:05:55,034 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 21:05:55,034 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:05:55,034 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-02-02 21:05:55,035 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 21:05:55,035 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 21:05:55,035 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 21:05:55,035 INFO L87 Difference]: Start difference. First operand 79 states and 85 transitions. Second operand 5 states. [2018-02-02 21:05:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:05:55,084 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2018-02-02 21:05:55,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 21:05:55,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2018-02-02 21:05:55,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:05:55,086 INFO L225 Difference]: With dead ends: 77 [2018-02-02 21:05:55,086 INFO L226 Difference]: Without dead ends: 77 [2018-02-02 21:05:55,086 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-02 21:05:55,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-02-02 21:05:55,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2018-02-02 21:05:55,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2018-02-02 21:05:55,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2018-02-02 21:05:55,091 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 21 [2018-02-02 21:05:55,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:05:55,092 INFO L432 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2018-02-02 21:05:55,092 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 21:05:55,092 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2018-02-02 21:05:55,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-02-02 21:05:55,092 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:05:55,093 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:05:55,093 INFO L371 AbstractCegarLoop]: === Iteration 5 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 21:05:55,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1600184184, now seen corresponding path program 1 times [2018-02-02 21:05:55,093 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:05:55,093 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:05:55,094 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:05:55,094 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:05:55,094 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:05:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:05:55,106 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:05:55,151 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 21:05:55,151 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:05:55,151 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-02-02 21:05:55,151 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-02-02 21:05:55,151 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-02-02 21:05:55,152 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-02-02 21:05:55,152 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 7 states. [2018-02-02 21:05:55,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:05:55,219 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2018-02-02 21:05:55,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-02-02 21:05:55,219 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-02-02 21:05:55,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:05:55,220 INFO L225 Difference]: With dead ends: 89 [2018-02-02 21:05:55,220 INFO L226 Difference]: Without dead ends: 89 [2018-02-02 21:05:55,221 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-02-02 21:05:55,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-02-02 21:05:55,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2018-02-02 21:05:55,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-02-02 21:05:55,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2018-02-02 21:05:55,226 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 21 [2018-02-02 21:05:55,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:05:55,226 INFO L432 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2018-02-02 21:05:55,226 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-02-02 21:05:55,227 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2018-02-02 21:05:55,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-02-02 21:05:55,227 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:05:55,227 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:05:55,227 INFO L371 AbstractCegarLoop]: === Iteration 6 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 21:05:55,228 INFO L82 PathProgramCache]: Analyzing trace with hash 1759981910, now seen corresponding path program 1 times [2018-02-02 21:05:55,228 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:05:55,228 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:05:55,228 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:05:55,229 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:05:55,229 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:05:55,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:05:55,240 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:05:55,266 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 21:05:55,266 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-02-02 21:05:55,266 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-02-02 21:05:55,266 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-02-02 21:05:55,266 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-02-02 21:05:55,267 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-02-02 21:05:55,267 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 5 states. [2018-02-02 21:05:55,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-02-02 21:05:55,287 INFO L93 Difference]: Finished difference Result 91 states and 96 transitions. [2018-02-02 21:05:55,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-02-02 21:05:55,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-02-02 21:05:55,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-02-02 21:05:55,288 INFO L225 Difference]: With dead ends: 91 [2018-02-02 21:05:55,288 INFO L226 Difference]: Without dead ends: 91 [2018-02-02 21:05:55,289 INFO L554 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-02-02 21:05:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-02-02 21:05:55,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 88. [2018-02-02 21:05:55,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2018-02-02 21:05:55,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2018-02-02 21:05:55,292 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 31 [2018-02-02 21:05:55,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-02-02 21:05:55,292 INFO L432 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2018-02-02 21:05:55,292 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-02-02 21:05:55,292 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2018-02-02 21:05:55,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-02-02 21:05:55,293 INFO L343 BasicCegarLoop]: Found error trace [2018-02-02 21:05:55,293 INFO L351 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-02-02 21:05:55,293 INFO L371 AbstractCegarLoop]: === Iteration 7 === [barErr1RequiresViolation, barErr0RequiresViolation, fooErr1RequiresViolation, fooErr0RequiresViolation, fooErr2RequiresViolation, fooErr3RequiresViolation, mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr0RequiresViolation, mainErr4EnsuresViolation]=== [2018-02-02 21:05:55,293 INFO L82 PathProgramCache]: Analyzing trace with hash 216183673, now seen corresponding path program 1 times [2018-02-02 21:05:55,293 INFO L213 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS_NO_ARRAY [2018-02-02 21:05:55,293 INFO L67 tionRefinementEngine]: Using refinement strategy SmtInterpolRefinementStrategy [2018-02-02 21:05:55,294 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:05:55,294 INFO L109 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-02-02 21:05:55,294 INFO L125 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-02-02 21:05:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-02-02 21:05:55,301 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-02-02 21:05:55,306 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: Unknown lemma type! at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:299) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:263) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:132) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.interpolate(Interpolator.java:220) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:201) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:915) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:192) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:164) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:199) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.MultiTrackTraceAbstractionRefinementStrategy.getTraceCheck(MultiTrackTraceAbstractionRefinementStrategy.java:222) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:397) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:381) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:316) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:115) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-02-02 21:05:55,308 INFO L168 Benchmark]: Toolchain (without parser) took 1298.68 ms. Allocated memory was 403.2 MB in the beginning and 618.1 MB in the end (delta: 215.0 MB). Free memory was 359.9 MB in the beginning and 504.9 MB in the end (delta: -145.0 MB). Peak memory consumption was 69.9 MB. Max. memory is 5.3 GB. [2018-02-02 21:05:55,309 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 403.2 MB. Free memory is still 365.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-02-02 21:05:55,309 INFO L168 Benchmark]: CACSL2BoogieTranslator took 143.91 ms. Allocated memory is still 403.2 MB. Free memory was 359.9 MB in the beginning and 351.9 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. [2018-02-02 21:05:55,309 INFO L168 Benchmark]: Boogie Preprocessor took 20.79 ms. Allocated memory is still 403.2 MB. Free memory was 351.9 MB in the beginning and 349.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. [2018-02-02 21:05:55,309 INFO L168 Benchmark]: RCFGBuilder took 231.50 ms. Allocated memory is still 403.2 MB. Free memory was 349.3 MB in the beginning and 329.4 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 5.3 GB. [2018-02-02 21:05:55,309 INFO L168 Benchmark]: TraceAbstraction took 899.48 ms. Allocated memory was 403.2 MB in the beginning and 618.1 MB in the end (delta: 215.0 MB). Free memory was 329.4 MB in the beginning and 504.9 MB in the end (delta: -175.4 MB). Peak memory consumption was 39.5 MB. Max. memory is 5.3 GB. [2018-02-02 21:05:55,310 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 403.2 MB. Free memory is still 365.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 143.91 ms. Allocated memory is still 403.2 MB. Free memory was 359.9 MB in the beginning and 351.9 MB in the end (delta: 7.9 MB). Peak memory consumption was 7.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 20.79 ms. Allocated memory is still 403.2 MB. Free memory was 351.9 MB in the beginning and 349.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 5.3 GB. * RCFGBuilder took 231.50 ms. Allocated memory is still 403.2 MB. Free memory was 349.3 MB in the beginning and 329.4 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 5.3 GB. * TraceAbstraction took 899.48 ms. Allocated memory was 403.2 MB in the beginning and 618.1 MB in the end (delta: 215.0 MB). Free memory was 329.4 MB in the beginning and 504.9 MB in the end (delta: -175.4 MB). Peak memory consumption was 39.5 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: Unknown lemma type! de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: Unknown lemma type!: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:299) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_true-valid-memsafety.c_svcomp-DerefFreeMemtrack-32bit-Automizer_SmtInterpol_NoArray.epf_AutomizerC.xml/Csv-Benchmark-0-2018-02-02_21-05-55-314.csv Received shutdown request...