java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1cceb4a [2018-01-29 22:33:34,660 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-29 22:33:34,662 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-29 22:33:34,677 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-29 22:33:34,677 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-29 22:33:34,678 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-29 22:33:34,679 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-29 22:33:34,680 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-29 22:33:34,682 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-29 22:33:34,683 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-29 22:33:34,683 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-29 22:33:34,684 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-29 22:33:34,685 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-29 22:33:34,686 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-29 22:33:34,687 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-29 22:33:34,690 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-29 22:33:34,692 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-29 22:33:34,694 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-29 22:33:34,695 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-29 22:33:34,696 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-29 22:33:34,699 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-29 22:33:34,699 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-29 22:33:34,699 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-29 22:33:34,700 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-29 22:33:34,701 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-29 22:33:34,702 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-29 22:33:34,703 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-29 22:33:34,703 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-29 22:33:34,704 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-29 22:33:34,704 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-29 22:33:34,704 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-29 22:33:34,705 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel+AI_EQ_SS.epf [2018-01-29 22:33:34,714 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-29 22:33:34,714 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-29 22:33:34,715 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-29 22:33:34,715 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-29 22:33:34,715 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-29 22:33:34,716 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-29 22:33:34,716 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-29 22:33:34,716 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-29 22:33:34,716 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-29 22:33:34,717 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-29 22:33:34,717 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-29 22:33:34,717 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-29 22:33:34,717 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-29 22:33:34,717 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-01-29 22:33:34,718 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-01-29 22:33:34,718 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-01-29 22:33:34,718 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-29 22:33:34,718 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-29 22:33:34,718 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-29 22:33:34,719 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-01-29 22:33:34,719 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-29 22:33:34,719 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-29 22:33:34,719 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-29 22:33:34,719 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-29 22:33:34,720 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-29 22:33:34,720 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-29 22:33:34,720 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-29 22:33:34,720 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-29 22:33:34,720 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-29 22:33:34,721 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-29 22:33:34,721 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-29 22:33:34,721 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-29 22:33:34,722 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-29 22:33:34,722 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-29 22:33:34,757 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-29 22:33:34,769 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-29 22:33:34,773 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-29 22:33:34,775 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-29 22:33:34,775 INFO L276 PluginConnector]: CDTParser initialized [2018-01-29 22:33:34,776 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/reverse_array_alloca_unsafe_false-valid-deref.i [2018-01-29 22:33:34,955 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-29 22:33:34,961 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-29 22:33:34,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-29 22:33:34,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-29 22:33:34,967 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-29 22:33:34,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:33:34" (1/1) ... [2018-01-29 22:33:34,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f35a96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:34, skipping insertion in model container [2018-01-29 22:33:34,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.01 10:33:34" (1/1) ... [2018-01-29 22:33:34,989 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 22:33:35,029 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-29 22:33:35,152 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 22:33:35,174 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-29 22:33:35,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:35 WrapperNode [2018-01-29 22:33:35,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-29 22:33:35,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-29 22:33:35,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-29 22:33:35,182 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-29 22:33:35,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:35" (1/1) ... [2018-01-29 22:33:35,194 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:35" (1/1) ... [2018-01-29 22:33:35,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:35" (1/1) ... [2018-01-29 22:33:35,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:35" (1/1) ... [2018-01-29 22:33:35,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:35" (1/1) ... [2018-01-29 22:33:35,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:35" (1/1) ... [2018-01-29 22:33:35,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:35" (1/1) ... [2018-01-29 22:33:35,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-29 22:33:35,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-29 22:33:35,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-29 22:33:35,213 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-29 22:33:35,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:35" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-29 22:33:35,260 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-29 22:33:35,261 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-29 22:33:35,261 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-29 22:33:35,261 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-29 22:33:35,261 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-29 22:33:35,261 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-29 22:33:35,261 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-29 22:33:35,261 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-29 22:33:35,262 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-29 22:33:35,262 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-29 22:33:35,262 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-29 22:33:35,262 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-29 22:33:35,551 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-29 22:33:35,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:33:35 BoogieIcfgContainer [2018-01-29 22:33:35,553 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-29 22:33:35,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-29 22:33:35,554 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-29 22:33:35,557 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-29 22:33:35,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.01 10:33:34" (1/3) ... [2018-01-29 22:33:35,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a5663a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:33:35, skipping insertion in model container [2018-01-29 22:33:35,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.01 10:33:35" (2/3) ... [2018-01-29 22:33:35,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a5663a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.01 10:33:35, skipping insertion in model container [2018-01-29 22:33:35,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.01 10:33:35" (3/3) ... [2018-01-29 22:33:35,560 INFO L107 eAbstractionObserver]: Analyzing ICFG reverse_array_alloca_unsafe_false-valid-deref.i [2018-01-29 22:33:35,567 INFO L128 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-29 22:33:35,574 INFO L140 ceAbstractionStarter]: Appying trace abstraction to program that has 21 error locations. [2018-01-29 22:33:35,614 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-29 22:33:35,614 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-29 22:33:35,614 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-29 22:33:35,615 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-29 22:33:35,615 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-29 22:33:35,615 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-29 22:33:35,615 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-29 22:33:35,615 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-01-29 22:33:35,616 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-29 22:33:35,634 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2018-01-29 22:33:35,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-29 22:33:35,641 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:33:35,642 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:33:35,643 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-01-29 22:33:35,647 INFO L82 PathProgramCache]: Analyzing trace with hash -623242573, now seen corresponding path program 1 times [2018-01-29 22:33:35,649 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:33:35,649 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:33:35,690 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:35,690 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:33:35,691 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:35,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:33:35,743 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:33:35,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 22:33:35,790 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 22:33:35,790 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-29 22:33:35,792 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-29 22:33:35,808 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-29 22:33:35,809 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-29 22:33:35,810 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 2 states. [2018-01-29 22:33:35,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:33:35,836 INFO L93 Difference]: Finished difference Result 143 states and 152 transitions. [2018-01-29 22:33:35,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-29 22:33:35,837 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-01-29 22:33:35,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:33:35,930 INFO L225 Difference]: With dead ends: 143 [2018-01-29 22:33:35,930 INFO L226 Difference]: Without dead ends: 89 [2018-01-29 22:33:35,934 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-29 22:33:35,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2018-01-29 22:33:35,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2018-01-29 22:33:35,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-01-29 22:33:35,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2018-01-29 22:33:35,972 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 19 [2018-01-29 22:33:35,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:33:35,972 INFO L432 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2018-01-29 22:33:35,972 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-29 22:33:35,973 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2018-01-29 22:33:35,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-29 22:33:35,973 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:33:35,973 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:33:35,974 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-01-29 22:33:35,974 INFO L82 PathProgramCache]: Analyzing trace with hash -2140680272, now seen corresponding path program 1 times [2018-01-29 22:33:35,974 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:33:35,974 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:33:35,975 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:35,975 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:33:35,975 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:33:35,996 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:33:36,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 22:33:36,078 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 22:33:36,078 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-29 22:33:36,080 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-29 22:33:36,080 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-29 22:33:36,080 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-29 22:33:36,081 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand 4 states. [2018-01-29 22:33:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:33:36,177 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2018-01-29 22:33:36,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-29 22:33:36,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-01-29 22:33:36,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:33:36,179 INFO L225 Difference]: With dead ends: 89 [2018-01-29 22:33:36,179 INFO L226 Difference]: Without dead ends: 85 [2018-01-29 22:33:36,181 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-29 22:33:36,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-01-29 22:33:36,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2018-01-29 22:33:36,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-01-29 22:33:36,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2018-01-29 22:33:36,190 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 20 [2018-01-29 22:33:36,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:33:36,191 INFO L432 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2018-01-29 22:33:36,191 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-29 22:33:36,191 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2018-01-29 22:33:36,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-29 22:33:36,192 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:33:36,192 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:33:36,192 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-01-29 22:33:36,192 INFO L82 PathProgramCache]: Analyzing trace with hash -2140680271, now seen corresponding path program 1 times [2018-01-29 22:33:36,193 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:33:36,193 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:33:36,194 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:36,194 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:33:36,194 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:33:36,211 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:33:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 22:33:36,278 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 22:33:36,278 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-29 22:33:36,278 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-29 22:33:36,279 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-29 22:33:36,279 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-29 22:33:36,279 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand 4 states. [2018-01-29 22:33:36,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:33:36,393 INFO L93 Difference]: Finished difference Result 215 states and 226 transitions. [2018-01-29 22:33:36,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-29 22:33:36,393 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-01-29 22:33:36,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:33:36,395 INFO L225 Difference]: With dead ends: 215 [2018-01-29 22:33:36,395 INFO L226 Difference]: Without dead ends: 168 [2018-01-29 22:33:36,396 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-29 22:33:36,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-01-29 22:33:36,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 90. [2018-01-29 22:33:36,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-01-29 22:33:36,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 95 transitions. [2018-01-29 22:33:36,408 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 95 transitions. Word has length 20 [2018-01-29 22:33:36,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:33:36,408 INFO L432 AbstractCegarLoop]: Abstraction has 90 states and 95 transitions. [2018-01-29 22:33:36,408 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-29 22:33:36,409 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 95 transitions. [2018-01-29 22:33:36,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-29 22:33:36,409 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:33:36,410 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:33:36,410 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-01-29 22:33:36,410 INFO L82 PathProgramCache]: Analyzing trace with hash -2140680235, now seen corresponding path program 1 times [2018-01-29 22:33:36,410 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:33:36,410 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:33:36,411 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:36,411 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:33:36,412 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:33:36,426 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:33:36,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 22:33:36,555 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 22:33:36,606 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-29 22:33:36,607 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-29 22:33:36,607 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-29 22:33:36,607 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-29 22:33:36,607 INFO L87 Difference]: Start difference. First operand 90 states and 95 transitions. Second operand 6 states. [2018-01-29 22:33:36,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:33:36,848 INFO L93 Difference]: Finished difference Result 153 states and 161 transitions. [2018-01-29 22:33:36,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-29 22:33:36,848 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-01-29 22:33:36,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:33:36,850 INFO L225 Difference]: With dead ends: 153 [2018-01-29 22:33:36,850 INFO L226 Difference]: Without dead ends: 150 [2018-01-29 22:33:36,851 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2018-01-29 22:33:36,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2018-01-29 22:33:36,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 98. [2018-01-29 22:33:36,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2018-01-29 22:33:36,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 105 transitions. [2018-01-29 22:33:36,862 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 105 transitions. Word has length 20 [2018-01-29 22:33:36,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:33:36,863 INFO L432 AbstractCegarLoop]: Abstraction has 98 states and 105 transitions. [2018-01-29 22:33:36,863 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-29 22:33:36,863 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 105 transitions. [2018-01-29 22:33:36,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-01-29 22:33:36,863 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:33:36,864 INFO L350 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:33:36,864 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-01-29 22:33:36,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1171426093, now seen corresponding path program 1 times [2018-01-29 22:33:36,864 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:33:36,864 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:33:36,865 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:36,865 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:33:36,865 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-29 22:33:36,878 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-29 22:33:36,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-29 22:33:36,934 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-29 22:33:36,934 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-29 22:33:36,935 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-29 22:33:36,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-29 22:33:36,935 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-01-29 22:33:36,935 INFO L87 Difference]: Start difference. First operand 98 states and 105 transitions. Second operand 6 states. [2018-01-29 22:33:37,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-29 22:33:37,065 INFO L93 Difference]: Finished difference Result 220 states and 232 transitions. [2018-01-29 22:33:37,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-29 22:33:37,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-01-29 22:33:37,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-29 22:33:37,068 INFO L225 Difference]: With dead ends: 220 [2018-01-29 22:33:37,068 INFO L226 Difference]: Without dead ends: 173 [2018-01-29 22:33:37,068 INFO L553 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-29 22:33:37,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2018-01-29 22:33:37,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 93. [2018-01-29 22:33:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2018-01-29 22:33:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 99 transitions. [2018-01-29 22:33:37,079 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 99 transitions. Word has length 23 [2018-01-29 22:33:37,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-29 22:33:37,079 INFO L432 AbstractCegarLoop]: Abstraction has 93 states and 99 transitions. [2018-01-29 22:33:37,079 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-29 22:33:37,079 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 99 transitions. [2018-01-29 22:33:37,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-29 22:33:37,080 INFO L342 BasicCegarLoop]: Found error trace [2018-01-29 22:33:37,081 INFO L350 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-29 22:33:37,081 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr5RequiresViolation, mainErr13RequiresViolation, mainErr1RequiresViolation, mainErr17RequiresViolation, mainErr20EnsuresViolation, mainErr9RequiresViolation, mainErr18RequiresViolation, mainErr0RequiresViolation, mainErr3RequiresViolation, mainErr7RequiresViolation, mainErr11RequiresViolation, mainErr8RequiresViolation, mainErr10RequiresViolation, mainErr15RequiresViolation, mainErr16RequiresViolation, mainErr2RequiresViolation, mainErr4RequiresViolation, mainErr12RequiresViolation, mainErr6RequiresViolation, mainErr14RequiresViolation, mainErr19RequiresViolation]=== [2018-01-29 22:33:37,081 INFO L82 PathProgramCache]: Analyzing trace with hash 985123224, now seen corresponding path program 1 times [2018-01-29 22:33:37,081 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-29 22:33:37,081 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-29 22:33:37,082 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:37,082 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-29 22:33:37,083 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-29 22:33:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-29 22:33:37,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-29 22:33:37,143 INFO L409 BasicCegarLoop]: Counterexample might be feasible [2018-01-29 22:33:37,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.01 10:33:37 BoogieIcfgContainer [2018-01-29 22:33:37,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-29 22:33:37,164 INFO L168 Benchmark]: Toolchain (without parser) took 2208.15 ms. Allocated memory was 304.1 MB in the beginning and 468.2 MB in the end (delta: 164.1 MB). Free memory was 263.1 MB in the beginning and 337.1 MB in the end (delta: -73.9 MB). Peak memory consumption was 90.2 MB. Max. memory is 5.3 GB. [2018-01-29 22:33:37,165 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 304.1 MB. Free memory is still 269.1 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-29 22:33:37,165 INFO L168 Benchmark]: CACSL2BoogieTranslator took 219.26 ms. Allocated memory is still 304.1 MB. Free memory was 263.1 MB in the beginning and 253.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-29 22:33:37,165 INFO L168 Benchmark]: Boogie Preprocessor took 30.34 ms. Allocated memory is still 304.1 MB. Free memory was 253.2 MB in the beginning and 251.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-29 22:33:37,166 INFO L168 Benchmark]: RCFGBuilder took 340.35 ms. Allocated memory is still 304.1 MB. Free memory was 251.2 MB in the beginning and 228.6 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 5.3 GB. [2018-01-29 22:33:37,166 INFO L168 Benchmark]: TraceAbstraction took 1609.72 ms. Allocated memory was 304.1 MB in the beginning and 468.2 MB in the end (delta: 164.1 MB). Free memory was 228.6 MB in the beginning and 337.1 MB in the end (delta: -108.4 MB). Peak memory consumption was 55.7 MB. Max. memory is 5.3 GB. [2018-01-29 22:33:37,167 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 304.1 MB. Free memory is still 269.1 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 219.26 ms. Allocated memory is still 304.1 MB. Free memory was 263.1 MB in the beginning and 253.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 30.34 ms. Allocated memory is still 304.1 MB. Free memory was 253.2 MB in the beginning and 251.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 340.35 ms. Allocated memory is still 304.1 MB. Free memory was 251.2 MB in the beginning and 228.6 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 5.3 GB. * TraceAbstraction took 1609.72 ms. Allocated memory was 304.1 MB in the beginning and 468.2 MB in the end (delta: 164.1 MB). Free memory was 228.6 MB in the beginning and 337.1 MB in the end (delta: -108.4 MB). Peak memory consumption was 55.7 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L541] int i, j, tmp; [L542] int length = __VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=1, length=1] [L543] COND FALSE !(length < 1) VAL [length=1] [L544] COND FALSE !(length % 2 == 0) VAL [length=1] [L545] EXPR, FCALL __builtin_alloca (length*sizeof(int)) VAL [__builtin_alloca (length*sizeof(int))={7:0}, length=1] [L545] int *arr = __builtin_alloca (length*sizeof(int)); VAL [__builtin_alloca (length*sizeof(int))={7:0}, arr={7:0}, length=1] [L546] i=0 VAL [__builtin_alloca (length*sizeof(int))={7:0}, arr={7:0}, i=0, length=1] [L546] COND TRUE i