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/mempurity-32bit-Automizer_Camel+AI_EQ.epf -i ../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-47db877 [2018-01-23 14:37:30,105 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-23 14:37:30,107 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-23 14:37:30,120 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-23 14:37:30,120 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-23 14:37:30,121 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-23 14:37:30,122 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-23 14:37:30,124 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-23 14:37:30,126 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-23 14:37:30,127 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-23 14:37:30,128 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-23 14:37:30,128 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-23 14:37:30,129 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-23 14:37:30,130 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-23 14:37:30,131 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-23 14:37:30,134 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-23 14:37:30,136 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-23 14:37:30,138 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-23 14:37:30,139 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-23 14:37:30,140 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-23 14:37:30,142 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-23 14:37:30,143 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-23 14:37:30,143 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-23 14:37:30,144 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-23 14:37:30,145 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-23 14:37:30,146 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-23 14:37:30,146 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-23 14:37:30,147 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-23 14:37:30,147 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-23 14:37:30,147 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-23 14:37:30,148 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-23 14:37:30,148 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Camel+AI_EQ.epf [2018-01-23 14:37:30,158 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-23 14:37:30,158 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-23 14:37:30,159 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-23 14:37:30,159 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-23 14:37:30,159 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-23 14:37:30,160 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-23 14:37:30,160 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-23 14:37:30,160 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-23 14:37:30,161 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-23 14:37:30,161 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-23 14:37:30,161 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-23 14:37:30,161 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-23 14:37:30,161 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-23 14:37:30,162 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-23 14:37:30,162 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-23 14:37:30,162 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-23 14:37:30,162 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-23 14:37:30,162 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-23 14:37:30,163 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-23 14:37:30,163 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-23 14:37:30,163 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-23 14:37:30,163 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-23 14:37:30,163 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-23 14:37:30,164 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-23 14:37:30,164 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-23 14:37:30,164 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-23 14:37:30,164 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-23 14:37:30,164 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-23 14:37:30,165 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-23 14:37:30,165 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-23 14:37:30,165 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-23 14:37:30,165 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-23 14:37:30,165 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-23 14:37:30,166 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-23 14:37:30,166 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-23 14:37:30,167 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-23 14:37:30,167 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-23 14:37:30,202 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-23 14:37:30,215 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-23 14:37:30,219 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-23 14:37:30,220 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-23 14:37:30,221 INFO L276 PluginConnector]: CDTParser initialized [2018-01-23 14:37:30,221 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-memsafety/ArraysOfVariableLength2_false-valid-deref-write.c [2018-01-23 14:37:30,350 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-23 14:37:30,355 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-23 14:37:30,356 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-23 14:37:30,356 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-23 14:37:30,361 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-23 14:37:30,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:37:30" (1/1) ... [2018-01-23 14:37:30,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7af1f268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:37:30, skipping insertion in model container [2018-01-23 14:37:30,364 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:37:30" (1/1) ... [2018-01-23 14:37:30,378 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:37:30,397 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:37:30,507 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:37:30,526 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:37:30,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:37:30 WrapperNode [2018-01-23 14:37:30,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-23 14:37:30,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-23 14:37:30,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-23 14:37:30,534 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-23 14:37:30,545 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:37:30" (1/1) ... [2018-01-23 14:37:30,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:37:30" (1/1) ... [2018-01-23 14:37:30,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:37:30" (1/1) ... [2018-01-23 14:37:30,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:37:30" (1/1) ... [2018-01-23 14:37:30,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:37:30" (1/1) ... [2018-01-23 14:37:30,562 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:37:30" (1/1) ... [2018-01-23 14:37:30,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:37:30" (1/1) ... [2018-01-23 14:37:30,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-23 14:37:30,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-23 14:37:30,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-23 14:37:30,567 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-23 14:37:30,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:37:30" (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 [2018-01-23 14:37:30,631 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-23 14:37:30,631 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-23 14:37:30,631 INFO L136 BoogieDeclarations]: Found implementation of procedure bar [2018-01-23 14:37:30,631 INFO L136 BoogieDeclarations]: Found implementation of procedure foo [2018-01-23 14:37:30,631 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-23 14:37:30,632 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-23 14:37:30,632 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-23 14:37:30,632 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-23 14:37:30,632 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-23 14:37:30,632 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-23 14:37:30,633 INFO L128 BoogieDeclarations]: Found specification of procedure bar [2018-01-23 14:37:30,633 INFO L128 BoogieDeclarations]: Found specification of procedure foo [2018-01-23 14:37:30,633 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-23 14:37:30,633 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-23 14:37:30,633 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-23 14:37:30,875 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-23 14:37:30,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:37:30 BoogieIcfgContainer [2018-01-23 14:37:30,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-23 14:37:30,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-23 14:37:30,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-23 14:37:30,878 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-23 14:37:30,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 02:37:30" (1/3) ... [2018-01-23 14:37:30,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3391d338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:37:30, skipping insertion in model container [2018-01-23 14:37:30,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:37:30" (2/3) ... [2018-01-23 14:37:30,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3391d338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:37:30, skipping insertion in model container [2018-01-23 14:37:30,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:37:30" (3/3) ... [2018-01-23 14:37:30,882 INFO L105 eAbstractionObserver]: Analyzing ICFG ArraysOfVariableLength2_false-valid-deref-write.c [2018-01-23 14:37:30,890 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-23 14:37:30,895 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2018-01-23 14:37:30,932 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:37:30,932 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:37:30,932 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:37:30,932 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:37:30,932 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:37:30,933 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:37:30,933 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:37:30,933 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == barErr0EnsuresViolation======== [2018-01-23 14:37:30,934 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:37:30,955 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-01-23 14:37:30,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-01-23 14:37:30,963 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:30,964 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:30,964 INFO L371 AbstractCegarLoop]: === Iteration 1 === [barErr0EnsuresViolation]=== [2018-01-23 14:37:30,969 INFO L82 PathProgramCache]: Analyzing trace with hash -492377012, now seen corresponding path program 1 times [2018-01-23 14:37:30,972 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:30,972 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:31,022 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:31,022 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:37:31,022 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:31,073 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:31,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:37:31,115 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:37:31,115 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:37:31,117 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:37:31,128 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:37:31,128 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:37:31,130 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2018-01-23 14:37:31,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:31,153 INFO L93 Difference]: Finished difference Result 114 states and 135 transitions. [2018-01-23 14:37:31,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:37:31,154 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2018-01-23 14:37:31,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:31,159 INFO L225 Difference]: With dead ends: 114 [2018-01-23 14:37:31,160 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:37:31,163 INFO L525 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 [2018-01-23 14:37:31,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:37:31,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:37:31,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:37:31,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:37:31,184 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-01-23 14:37:31,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:31,184 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:37:31,184 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:37:31,184 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:37:31,184 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:37:31,188 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-01-23 14:37:31,294 INFO L404 ceAbstractionStarter]: At program point L13'''(lines 13 15) the Hoare annotation is: true [2018-01-23 14:37:31,294 INFO L401 ceAbstractionStarter]: For program point barErr0EnsuresViolation(lines 11 17) no Hoare annotation was computed. [2018-01-23 14:37:31,294 INFO L401 ceAbstractionStarter]: For program point L13''(lines 13 15) no Hoare annotation was computed. [2018-01-23 14:37:31,294 INFO L401 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-01-23 14:37:31,294 INFO L401 ceAbstractionStarter]: For program point L13(lines 13 15) no Hoare annotation was computed. [2018-01-23 14:37:31,295 INFO L404 ceAbstractionStarter]: At program point barENTRY(lines 11 17) the Hoare annotation is: true [2018-01-23 14:37:31,295 INFO L401 ceAbstractionStarter]: For program point L13''''(lines 13 15) no Hoare annotation was computed. [2018-01-23 14:37:31,295 INFO L401 ceAbstractionStarter]: For program point barFINAL(lines 11 17) no Hoare annotation was computed. [2018-01-23 14:37:31,295 INFO L401 ceAbstractionStarter]: For program point L14'(line 14) no Hoare annotation was computed. [2018-01-23 14:37:31,295 INFO L401 ceAbstractionStarter]: For program point barEXIT(lines 11 17) no Hoare annotation was computed. [2018-01-23 14:37:31,295 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initErr0EnsuresViolation(lines 1 43) no Hoare annotation was computed. [2018-01-23 14:37:31,295 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(lines 1 43) no Hoare annotation was computed. [2018-01-23 14:37:31,296 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(lines 1 43) the Hoare annotation is: true [2018-01-23 14:37:31,296 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(lines 1 43) no Hoare annotation was computed. [2018-01-23 14:37:31,296 INFO L401 ceAbstractionStarter]: For program point fooEXIT(lines 20 29) no Hoare annotation was computed. [2018-01-23 14:37:31,296 INFO L401 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-01-23 14:37:31,296 INFO L401 ceAbstractionStarter]: For program point L23(line 23) no Hoare annotation was computed. [2018-01-23 14:37:31,296 INFO L401 ceAbstractionStarter]: For program point L22(lines 22 24) no Hoare annotation was computed. [2018-01-23 14:37:31,296 INFO L401 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-01-23 14:37:31,297 INFO L401 ceAbstractionStarter]: For program point L23'(line 23) no Hoare annotation was computed. [2018-01-23 14:37:31,297 INFO L401 ceAbstractionStarter]: For program point L21'''''(line 21) no Hoare annotation was computed. [2018-01-23 14:37:31,297 INFO L401 ceAbstractionStarter]: For program point L25'(lines 25 27) no Hoare annotation was computed. [2018-01-23 14:37:31,297 INFO L401 ceAbstractionStarter]: For program point L21'''(line 21) no Hoare annotation was computed. [2018-01-23 14:37:31,297 INFO L401 ceAbstractionStarter]: For program point L21'(line 21) no Hoare annotation was computed. [2018-01-23 14:37:31,297 INFO L401 ceAbstractionStarter]: For program point fooFINAL(lines 20 29) no Hoare annotation was computed. [2018-01-23 14:37:31,298 INFO L404 ceAbstractionStarter]: At program point fooENTRY(lines 20 29) the Hoare annotation is: true [2018-01-23 14:37:31,298 INFO L401 ceAbstractionStarter]: For program point L22''(lines 22 24) no Hoare annotation was computed. [2018-01-23 14:37:31,298 INFO L401 ceAbstractionStarter]: For program point L23''(line 23) no Hoare annotation was computed. [2018-01-23 14:37:31,298 INFO L401 ceAbstractionStarter]: For program point L21''(line 21) no Hoare annotation was computed. [2018-01-23 14:37:31,298 INFO L404 ceAbstractionStarter]: At program point L22''''(lines 22 24) the Hoare annotation is: true [2018-01-23 14:37:31,298 INFO L404 ceAbstractionStarter]: At program point L22'''(lines 22 24) the Hoare annotation is: true [2018-01-23 14:37:31,298 INFO L401 ceAbstractionStarter]: For program point fooErr0EnsuresViolation(lines 20 29) no Hoare annotation was computed. [2018-01-23 14:37:31,299 INFO L401 ceAbstractionStarter]: For program point L21''''(line 21) no Hoare annotation was computed. [2018-01-23 14:37:31,299 INFO L404 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(lines 1 43) the Hoare annotation is: true [2018-01-23 14:37:31,299 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(lines 1 43) no Hoare annotation was computed. [2018-01-23 14:37:31,299 INFO L404 ceAbstractionStarter]: At program point L1(lines 1 43) the Hoare annotation is: true [2018-01-23 14:37:31,299 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startErr0EnsuresViolation(lines 1 43) no Hoare annotation was computed. [2018-01-23 14:37:31,299 INFO L401 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(lines 1 43) no Hoare annotation was computed. [2018-01-23 14:37:31,300 INFO L404 ceAbstractionStarter]: At program point L36''(lines 36 40) the Hoare annotation is: true [2018-01-23 14:37:31,300 INFO L401 ceAbstractionStarter]: For program point L33''(lines 33 35) no Hoare annotation was computed. [2018-01-23 14:37:31,300 INFO L401 ceAbstractionStarter]: For program point L34''(line 34) no Hoare annotation was computed. [2018-01-23 14:37:31,300 INFO L404 ceAbstractionStarter]: At program point L33'''(lines 33 35) the Hoare annotation is: true [2018-01-23 14:37:31,300 INFO L401 ceAbstractionStarter]: For program point L32''(line 32) no Hoare annotation was computed. [2018-01-23 14:37:31,300 INFO L401 ceAbstractionStarter]: For program point L37'(line 37) no Hoare annotation was computed. [2018-01-23 14:37:31,300 INFO L401 ceAbstractionStarter]: For program point L32''''(line 32) no Hoare annotation was computed. [2018-01-23 14:37:31,301 INFO L401 ceAbstractionStarter]: For program point L32'''''(line 32) no Hoare annotation was computed. [2018-01-23 14:37:31,301 INFO L401 ceAbstractionStarter]: For program point mainErr0EnsuresViolation(lines 31 42) no Hoare annotation was computed. [2018-01-23 14:37:31,301 INFO L401 ceAbstractionStarter]: For program point L36'''(lines 36 40) no Hoare annotation was computed. [2018-01-23 14:37:31,301 INFO L401 ceAbstractionStarter]: For program point mainFINAL(lines 31 42) no Hoare annotation was computed. [2018-01-23 14:37:31,301 INFO L401 ceAbstractionStarter]: For program point L32(line 32) no Hoare annotation was computed. [2018-01-23 14:37:31,301 INFO L401 ceAbstractionStarter]: For program point L32'''(line 32) no Hoare annotation was computed. [2018-01-23 14:37:31,301 INFO L404 ceAbstractionStarter]: At program point L34(line 34) the Hoare annotation is: true [2018-01-23 14:37:31,302 INFO L401 ceAbstractionStarter]: For program point L33(lines 33 35) no Hoare annotation was computed. [2018-01-23 14:37:31,302 INFO L401 ceAbstractionStarter]: For program point L34'''(line 34) no Hoare annotation was computed. [2018-01-23 14:37:31,302 INFO L401 ceAbstractionStarter]: For program point L33''''(lines 33 35) no Hoare annotation was computed. [2018-01-23 14:37:31,302 INFO L401 ceAbstractionStarter]: For program point L36(lines 36 40) no Hoare annotation was computed. [2018-01-23 14:37:31,302 INFO L401 ceAbstractionStarter]: For program point mainEXIT(lines 31 42) no Hoare annotation was computed. [2018-01-23 14:37:31,302 INFO L404 ceAbstractionStarter]: At program point mainENTRY(lines 31 42) the Hoare annotation is: true [2018-01-23 14:37:31,302 INFO L401 ceAbstractionStarter]: For program point L38(line 38) no Hoare annotation was computed. [2018-01-23 14:37:31,303 INFO L401 ceAbstractionStarter]: For program point L37(line 37) no Hoare annotation was computed. [2018-01-23 14:37:31,303 INFO L401 ceAbstractionStarter]: For program point L34'(line 34) no Hoare annotation was computed. [2018-01-23 14:37:31,303 INFO L401 ceAbstractionStarter]: For program point L32'(line 32) no Hoare annotation was computed. [2018-01-23 14:37:31,307 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:37:31,307 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:37:31,307 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:37:31,307 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:37:31,307 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:37:31,307 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:37:31,307 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:37:31,308 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-23 14:37:31,308 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:37:31,310 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-01-23 14:37:31,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-23 14:37:31,311 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:31,311 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-23 14:37:31,311 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-23 14:37:31,311 INFO L82 PathProgramCache]: Analyzing trace with hash 136143, now seen corresponding path program 1 times [2018-01-23 14:37:31,311 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:31,312 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:31,313 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:31,313 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:37:31,313 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:37:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:37:31,340 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:37:31,344 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:37:31,348 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:37:31,348 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:37:31,348 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:37:31,348 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:37:31,348 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:37:31,349 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:37:31,349 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:37:31,349 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == fooErr0EnsuresViolation======== [2018-01-23 14:37:31,349 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:37:31,350 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-01-23 14:37:31,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-01-23 14:37:31,352 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:31,352 INFO L322 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] [2018-01-23 14:37:31,352 INFO L371 AbstractCegarLoop]: === Iteration 1 === [fooErr0EnsuresViolation]=== [2018-01-23 14:37:31,352 INFO L82 PathProgramCache]: Analyzing trace with hash 1220349549, now seen corresponding path program 1 times [2018-01-23 14:37:31,352 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:31,352 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:31,353 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:31,353 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:37:31,353 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:31,370 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:31,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:37:31,392 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:37:31,392 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:37:31,393 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:37:31,393 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:37:31,393 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:37:31,393 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2018-01-23 14:37:31,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:31,402 INFO L93 Difference]: Finished difference Result 114 states and 135 transitions. [2018-01-23 14:37:31,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:37:31,402 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-01-23 14:37:31,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:31,405 INFO L225 Difference]: With dead ends: 114 [2018-01-23 14:37:31,405 INFO L226 Difference]: Without dead ends: 43 [2018-01-23 14:37:31,406 INFO L525 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 [2018-01-23 14:37:31,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-01-23 14:37:31,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-01-23 14:37:31,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-01-23 14:37:31,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2018-01-23 14:37:31,416 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 26 [2018-01-23 14:37:31,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:31,416 INFO L432 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2018-01-23 14:37:31,416 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:37:31,417 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2018-01-23 14:37:31,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-01-23 14:37:31,417 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:31,417 INFO L322 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] [2018-01-23 14:37:31,418 INFO L371 AbstractCegarLoop]: === Iteration 2 === [fooErr0EnsuresViolation]=== [2018-01-23 14:37:31,418 INFO L82 PathProgramCache]: Analyzing trace with hash 390316661, now seen corresponding path program 1 times [2018-01-23 14:37:31,418 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:31,418 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:31,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:31,419 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:37:31,419 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:31,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:31,445 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:31,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:37:31,550 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:37:31,550 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-01-23 14:37:31,552 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-23 14:37:31,552 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-23 14:37:31,552 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-01-23 14:37:31,553 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand 7 states. [2018-01-23 14:37:31,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:31,692 INFO L93 Difference]: Finished difference Result 112 states and 124 transitions. [2018-01-23 14:37:31,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-23 14:37:31,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2018-01-23 14:37:31,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:31,695 INFO L225 Difference]: With dead ends: 112 [2018-01-23 14:37:31,695 INFO L226 Difference]: Without dead ends: 77 [2018-01-23 14:37:31,696 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-01-23 14:37:31,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-01-23 14:37:31,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2018-01-23 14:37:31,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-01-23 14:37:31,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2018-01-23 14:37:31,712 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 28 [2018-01-23 14:37:31,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:31,712 INFO L432 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2018-01-23 14:37:31,712 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-23 14:37:31,712 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2018-01-23 14:37:31,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-01-23 14:37:31,714 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:31,714 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:31,714 INFO L371 AbstractCegarLoop]: === Iteration 3 === [fooErr0EnsuresViolation]=== [2018-01-23 14:37:31,714 INFO L82 PathProgramCache]: Analyzing trace with hash 2078164222, now seen corresponding path program 1 times [2018-01-23 14:37:31,714 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:31,715 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:31,715 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:31,715 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:37:31,716 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:31,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:31,732 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:31,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-23 14:37:31,800 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:37:31,800 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-23 14:37:31,801 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-23 14:37:31,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-23 14:37:31,801 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-01-23 14:37:31,802 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand 6 states. [2018-01-23 14:37:31,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:31,909 INFO L93 Difference]: Finished difference Result 129 states and 144 transitions. [2018-01-23 14:37:31,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-01-23 14:37:31,909 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2018-01-23 14:37:31,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:31,911 INFO L225 Difference]: With dead ends: 129 [2018-01-23 14:37:31,911 INFO L226 Difference]: Without dead ends: 80 [2018-01-23 14:37:31,912 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-01-23 14:37:31,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-01-23 14:37:31,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 71. [2018-01-23 14:37:31,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-01-23 14:37:31,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 79 transitions. [2018-01-23 14:37:31,922 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 79 transitions. Word has length 33 [2018-01-23 14:37:31,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:31,923 INFO L432 AbstractCegarLoop]: Abstraction has 71 states and 79 transitions. [2018-01-23 14:37:31,923 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-23 14:37:31,923 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 79 transitions. [2018-01-23 14:37:31,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-01-23 14:37:31,924 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:31,924 INFO L322 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:31,925 INFO L371 AbstractCegarLoop]: === Iteration 4 === [fooErr0EnsuresViolation]=== [2018-01-23 14:37:31,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1168283626, now seen corresponding path program 1 times [2018-01-23 14:37:31,925 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:31,925 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:31,926 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:31,926 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:37:31,926 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:31,951 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:32,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-01-23 14:37:32,037 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:37:32,037 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-23 14:37:32,037 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-23 14:37:32,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-23 14:37:32,037 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-01-23 14:37:32,038 INFO L87 Difference]: Start difference. First operand 71 states and 79 transitions. Second operand 4 states. [2018-01-23 14:37:32,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:32,116 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2018-01-23 14:37:32,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:37:32,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2018-01-23 14:37:32,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:32,118 INFO L225 Difference]: With dead ends: 71 [2018-01-23 14:37:32,118 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:37:32,119 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:37:32,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:37:32,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:37:32,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:37:32,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:37:32,120 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 39 [2018-01-23 14:37:32,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:32,120 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:37:32,120 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-23 14:37:32,120 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:37:32,120 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:37:32,122 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:37:32,123 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:37:32,123 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:37:32,123 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:37:32,123 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:37:32,123 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:37:32,123 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:37:32,123 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-23 14:37:32,123 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:37:32,125 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2018-01-23 14:37:32,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-01-23 14:37:32,126 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:32,126 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:32,126 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:37:32,126 INFO L82 PathProgramCache]: Analyzing trace with hash -851979775, now seen corresponding path program 1 times [2018-01-23 14:37:32,126 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:32,126 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:32,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:32,127 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:37:32,127 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:32,133 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:32,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:37:32,139 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:37:32,139 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-01-23 14:37:32,140 INFO L409 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-01-23 14:37:32,140 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-01-23 14:37:32,140 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-01-23 14:37:32,141 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 2 states. [2018-01-23 14:37:32,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:32,146 INFO L93 Difference]: Finished difference Result 114 states and 135 transitions. [2018-01-23 14:37:32,146 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-01-23 14:37:32,146 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2018-01-23 14:37:32,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:32,148 INFO L225 Difference]: With dead ends: 114 [2018-01-23 14:37:32,148 INFO L226 Difference]: Without dead ends: 57 [2018-01-23 14:37:32,148 INFO L525 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 [2018-01-23 14:37:32,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-01-23 14:37:32,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-01-23 14:37:32,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-01-23 14:37:32,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2018-01-23 14:37:32,154 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 17 [2018-01-23 14:37:32,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:32,155 INFO L432 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2018-01-23 14:37:32,155 INFO L433 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-01-23 14:37:32,155 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2018-01-23 14:37:32,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-23 14:37:32,156 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:32,156 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:32,157 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:37:32,157 INFO L82 PathProgramCache]: Analyzing trace with hash -178858898, now seen corresponding path program 1 times [2018-01-23 14:37:32,157 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:32,157 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:32,158 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:32,158 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:37:32,158 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:32,164 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:37:32,181 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:37:32,182 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-01-23 14:37:32,182 INFO L409 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-01-23 14:37:32,182 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-01-23 14:37:32,182 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-01-23 14:37:32,183 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 3 states. [2018-01-23 14:37:32,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:32,201 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2018-01-23 14:37:32,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-01-23 14:37:32,202 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2018-01-23 14:37:32,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:32,203 INFO L225 Difference]: With dead ends: 76 [2018-01-23 14:37:32,203 INFO L226 Difference]: Without dead ends: 61 [2018-01-23 14:37:32,203 INFO L525 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 [2018-01-23 14:37:32,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-01-23 14:37:32,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2018-01-23 14:37:32,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-01-23 14:37:32,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2018-01-23 14:37:32,209 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 19 [2018-01-23 14:37:32,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:32,209 INFO L432 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2018-01-23 14:37:32,209 INFO L433 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-01-23 14:37:32,210 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2018-01-23 14:37:32,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-01-23 14:37:32,211 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:32,211 INFO L322 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:32,211 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:37:32,212 INFO L82 PathProgramCache]: Analyzing trace with hash -853032378, now seen corresponding path program 1 times [2018-01-23 14:37:32,212 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:32,212 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:32,213 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:32,213 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:37:32,213 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:32,227 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:32,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:37:32,259 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:37:32,260 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:37:32,272 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:37:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:32,306 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:37:32,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-23 14:37:32,379 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:37:32,379 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 8 [2018-01-23 14:37:32,379 INFO L409 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-01-23 14:37:32,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-01-23 14:37:32,380 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-01-23 14:37:32,380 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 8 states. [2018-01-23 14:37:32,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:32,531 INFO L93 Difference]: Finished difference Result 129 states and 145 transitions. [2018-01-23 14:37:32,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-23 14:37:32,532 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2018-01-23 14:37:32,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:32,532 INFO L225 Difference]: With dead ends: 129 [2018-01-23 14:37:32,533 INFO L226 Difference]: Without dead ends: 74 [2018-01-23 14:37:32,533 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-01-23 14:37:32,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-01-23 14:37:32,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2018-01-23 14:37:32,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2018-01-23 14:37:32,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 70 transitions. [2018-01-23 14:37:32,539 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 70 transitions. Word has length 46 [2018-01-23 14:37:32,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:32,539 INFO L432 AbstractCegarLoop]: Abstraction has 65 states and 70 transitions. [2018-01-23 14:37:32,539 INFO L433 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-01-23 14:37:32,539 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 70 transitions. [2018-01-23 14:37:32,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2018-01-23 14:37:32,540 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:32,540 INFO L322 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:32,540 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:37:32,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1695061925, now seen corresponding path program 1 times [2018-01-23 14:37:32,540 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:32,541 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:32,541 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:32,541 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:37:32,541 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:32,569 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:32,664 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-01-23 14:37:32,665 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:37:32,665 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:37:32,674 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:37:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:32,725 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:37:32,843 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-01-23 14:37:32,866 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-01-23 14:37:32,866 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2018-01-23 14:37:32,867 INFO L409 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-01-23 14:37:32,867 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-01-23 14:37:32,867 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-01-23 14:37:32,868 INFO L87 Difference]: Start difference. First operand 65 states and 70 transitions. Second operand 10 states. [2018-01-23 14:37:33,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:33,188 INFO L93 Difference]: Finished difference Result 147 states and 164 transitions. [2018-01-23 14:37:33,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-01-23 14:37:33,189 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 83 [2018-01-23 14:37:33,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:33,191 INFO L225 Difference]: With dead ends: 147 [2018-01-23 14:37:33,191 INFO L226 Difference]: Without dead ends: 82 [2018-01-23 14:37:33,192 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-01-23 14:37:33,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-01-23 14:37:33,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 74. [2018-01-23 14:37:33,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-01-23 14:37:33,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 80 transitions. [2018-01-23 14:37:33,200 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 80 transitions. Word has length 83 [2018-01-23 14:37:33,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:33,201 INFO L432 AbstractCegarLoop]: Abstraction has 74 states and 80 transitions. [2018-01-23 14:37:33,201 INFO L433 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-01-23 14:37:33,201 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 80 transitions. [2018-01-23 14:37:33,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-01-23 14:37:33,203 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:33,204 INFO L322 BasicCegarLoop]: trace histogram [6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:33,204 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:37:33,204 INFO L82 PathProgramCache]: Analyzing trace with hash 2079106431, now seen corresponding path program 1 times [2018-01-23 14:37:33,204 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:33,204 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:33,205 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:33,205 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:37:33,205 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:33,240 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2018-01-23 14:37:33,369 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:37:33,369 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:37:33,376 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:37:33,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:33,446 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:37:33,560 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2018-01-23 14:37:33,594 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:37:33,594 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2018-01-23 14:37:33,595 INFO L409 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-01-23 14:37:33,595 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-01-23 14:37:33,595 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2018-01-23 14:37:33,595 INFO L87 Difference]: Start difference. First operand 74 states and 80 transitions. Second operand 12 states. [2018-01-23 14:37:33,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:33,784 INFO L93 Difference]: Finished difference Result 191 states and 214 transitions. [2018-01-23 14:37:33,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-23 14:37:33,784 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 129 [2018-01-23 14:37:33,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:33,786 INFO L225 Difference]: With dead ends: 191 [2018-01-23 14:37:33,786 INFO L226 Difference]: Without dead ends: 135 [2018-01-23 14:37:33,786 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2018-01-23 14:37:33,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2018-01-23 14:37:33,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 107. [2018-01-23 14:37:33,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2018-01-23 14:37:33,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 117 transitions. [2018-01-23 14:37:33,796 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 117 transitions. Word has length 129 [2018-01-23 14:37:33,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:33,796 INFO L432 AbstractCegarLoop]: Abstraction has 107 states and 117 transitions. [2018-01-23 14:37:33,796 INFO L433 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-01-23 14:37:33,796 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 117 transitions. [2018-01-23 14:37:33,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2018-01-23 14:37:33,798 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:33,798 INFO L322 BasicCegarLoop]: trace histogram [11, 8, 7, 7, 7, 7, 7, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:33,798 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:37:33,798 INFO L82 PathProgramCache]: Analyzing trace with hash -70463565, now seen corresponding path program 2 times [2018-01-23 14:37:33,798 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:33,799 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:33,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:33,799 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:37:33,799 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:33,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:33,843 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:33,984 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2018-01-23 14:37:33,984 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:37:33,984 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:37:33,992 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:37:34,016 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:34,056 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:34,063 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:37:34,072 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:37:34,238 INFO L134 CoverageAnalysis]: Checked inductivity of 402 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-01-23 14:37:34,271 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:37:34,272 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2018-01-23 14:37:34,272 INFO L409 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-01-23 14:37:34,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-01-23 14:37:34,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2018-01-23 14:37:34,273 INFO L87 Difference]: Start difference. First operand 107 states and 117 transitions. Second operand 14 states. [2018-01-23 14:37:34,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:34,556 INFO L93 Difference]: Finished difference Result 225 states and 254 transitions. [2018-01-23 14:37:34,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-23 14:37:34,556 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 183 [2018-01-23 14:37:34,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:34,558 INFO L225 Difference]: With dead ends: 225 [2018-01-23 14:37:34,558 INFO L226 Difference]: Without dead ends: 130 [2018-01-23 14:37:34,558 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-01-23 14:37:34,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2018-01-23 14:37:34,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 122. [2018-01-23 14:37:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-01-23 14:37:34,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 133 transitions. [2018-01-23 14:37:34,570 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 133 transitions. Word has length 183 [2018-01-23 14:37:34,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:34,570 INFO L432 AbstractCegarLoop]: Abstraction has 122 states and 133 transitions. [2018-01-23 14:37:34,570 INFO L433 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-01-23 14:37:34,570 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 133 transitions. [2018-01-23 14:37:34,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2018-01-23 14:37:34,572 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:34,572 INFO L322 BasicCegarLoop]: trace histogram [14, 14, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:34,572 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:37:34,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1753125657, now seen corresponding path program 3 times [2018-01-23 14:37:34,573 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:34,573 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:34,573 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:34,573 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:37:34,573 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:34,609 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2018-01-23 14:37:34,752 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:37:34,752 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:37:34,760 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-23 14:37:34,785 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:37:34,794 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:37:34,805 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:37:34,816 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:37:34,818 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:37:34,827 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:37:34,892 INFO L134 CoverageAnalysis]: Checked inductivity of 836 backedges. 184 proven. 10 refuted. 0 times theorem prover too weak. 642 trivial. 0 not checked. [2018-01-23 14:37:34,913 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:37:34,913 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2018-01-23 14:37:34,913 INFO L409 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-01-23 14:37:34,914 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-01-23 14:37:34,914 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-01-23 14:37:34,914 INFO L87 Difference]: Start difference. First operand 122 states and 133 transitions. Second operand 13 states. [2018-01-23 14:37:35,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:35,089 INFO L93 Difference]: Finished difference Result 274 states and 316 transitions. [2018-01-23 14:37:35,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-01-23 14:37:35,089 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 245 [2018-01-23 14:37:35,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:35,092 INFO L225 Difference]: With dead ends: 274 [2018-01-23 14:37:35,092 INFO L226 Difference]: Without dead ends: 262 [2018-01-23 14:37:35,093 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2018-01-23 14:37:35,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2018-01-23 14:37:35,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 176. [2018-01-23 14:37:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2018-01-23 14:37:35,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 198 transitions. [2018-01-23 14:37:35,123 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 198 transitions. Word has length 245 [2018-01-23 14:37:35,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:35,124 INFO L432 AbstractCegarLoop]: Abstraction has 176 states and 198 transitions. [2018-01-23 14:37:35,124 INFO L433 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-01-23 14:37:35,124 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 198 transitions. [2018-01-23 14:37:35,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-01-23 14:37:35,129 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:35,130 INFO L322 BasicCegarLoop]: trace histogram [21, 17, 15, 15, 15, 15, 15, 11, 11, 11, 11, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:35,130 INFO L371 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:37:35,130 INFO L82 PathProgramCache]: Analyzing trace with hash -969187446, now seen corresponding path program 4 times [2018-01-23 14:37:35,130 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:35,130 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:35,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:35,131 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:37:35,131 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:35,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:35,181 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:35,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1604 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 1487 trivial. 0 not checked. [2018-01-23 14:37:35,468 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:37:35,468 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:37:35,473 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-23 14:37:35,545 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:37:35,555 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:37:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1604 backedges. 1018 proven. 9 refuted. 0 times theorem prover too weak. 577 trivial. 0 not checked. [2018-01-23 14:37:35,819 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:37:35,820 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 18 [2018-01-23 14:37:35,820 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-23 14:37:35,821 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-23 14:37:35,821 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2018-01-23 14:37:35,821 INFO L87 Difference]: Start difference. First operand 176 states and 198 transitions. Second operand 18 states. [2018-01-23 14:37:36,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:36,138 INFO L93 Difference]: Finished difference Result 434 states and 540 transitions. [2018-01-23 14:37:36,139 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-01-23 14:37:36,139 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 316 [2018-01-23 14:37:36,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:36,142 INFO L225 Difference]: With dead ends: 434 [2018-01-23 14:37:36,142 INFO L226 Difference]: Without dead ends: 320 [2018-01-23 14:37:36,143 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=567, Unknown=0, NotChecked=0, Total=702 [2018-01-23 14:37:36,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2018-01-23 14:37:36,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 185. [2018-01-23 14:37:36,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-01-23 14:37:36,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 210 transitions. [2018-01-23 14:37:36,162 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 210 transitions. Word has length 316 [2018-01-23 14:37:36,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:36,162 INFO L432 AbstractCegarLoop]: Abstraction has 185 states and 210 transitions. [2018-01-23 14:37:36,162 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-23 14:37:36,162 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 210 transitions. [2018-01-23 14:37:36,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2018-01-23 14:37:36,164 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:36,164 INFO L322 BasicCegarLoop]: trace histogram [25, 24, 18, 18, 18, 18, 17, 17, 17, 17, 17, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:36,164 INFO L371 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:37:36,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1517871390, now seen corresponding path program 5 times [2018-01-23 14:37:36,164 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:36,165 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:36,165 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:36,166 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:37:36,166 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:36,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:36,203 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:36,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2610 backedges. 0 proven. 161 refuted. 0 times theorem prover too weak. 2449 trivial. 0 not checked. [2018-01-23 14:37:36,592 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:37:36,592 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:37:36,598 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-23 14:37:36,627 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:36,640 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:36,654 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:36,661 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:36,673 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:36,696 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:36,807 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:36,811 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:37:36,821 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:37:37,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2610 backedges. 1320 proven. 61 refuted. 0 times theorem prover too weak. 1229 trivial. 0 not checked. [2018-01-23 14:37:37,044 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:37:37,045 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2018-01-23 14:37:37,045 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-23 14:37:37,045 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-23 14:37:37,046 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2018-01-23 14:37:37,046 INFO L87 Difference]: Start difference. First operand 185 states and 210 transitions. Second operand 21 states. [2018-01-23 14:37:37,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:37,836 INFO L93 Difference]: Finished difference Result 370 states and 425 transitions. [2018-01-23 14:37:37,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-01-23 14:37:37,837 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 388 [2018-01-23 14:37:37,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:37,839 INFO L225 Difference]: With dead ends: 370 [2018-01-23 14:37:37,839 INFO L226 Difference]: Without dead ends: 192 [2018-01-23 14:37:37,841 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=280, Invalid=1360, Unknown=0, NotChecked=0, Total=1640 [2018-01-23 14:37:37,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2018-01-23 14:37:37,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 183. [2018-01-23 14:37:37,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-01-23 14:37:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 200 transitions. [2018-01-23 14:37:37,857 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 200 transitions. Word has length 388 [2018-01-23 14:37:37,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:37,858 INFO L432 AbstractCegarLoop]: Abstraction has 183 states and 200 transitions. [2018-01-23 14:37:37,858 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-23 14:37:37,858 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 200 transitions. [2018-01-23 14:37:37,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-01-23 14:37:37,861 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:37,862 INFO L322 BasicCegarLoop]: trace histogram [29, 29, 21, 21, 21, 21, 21, 21, 21, 21, 21, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:37,862 INFO L371 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:37:37,862 INFO L82 PathProgramCache]: Analyzing trace with hash -859303758, now seen corresponding path program 6 times [2018-01-23 14:37:37,862 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:37,862 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:37,863 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:37,863 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:37:37,864 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:37,925 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:38,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3698 backedges. 0 proven. 212 refuted. 0 times theorem prover too weak. 3486 trivial. 0 not checked. [2018-01-23 14:37:38,359 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:37:38,359 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:37:38,366 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-23 14:37:38,399 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:37:38,413 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:37:38,423 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:37:38,431 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:37:38,440 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:37:38,446 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:37:38,457 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:37:38,523 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:37:38,587 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:37:38,590 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:37:38,601 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:37:38,769 INFO L134 CoverageAnalysis]: Checked inductivity of 3698 backedges. 479 proven. 68 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2018-01-23 14:37:38,790 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:37:38,790 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2018-01-23 14:37:38,791 INFO L409 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-01-23 14:37:38,791 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-01-23 14:37:38,791 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2018-01-23 14:37:38,792 INFO L87 Difference]: Start difference. First operand 183 states and 200 transitions. Second operand 18 states. [2018-01-23 14:37:39,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:39,204 INFO L93 Difference]: Finished difference Result 402 states and 468 transitions. [2018-01-23 14:37:39,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-01-23 14:37:39,205 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 452 [2018-01-23 14:37:39,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:39,209 INFO L225 Difference]: With dead ends: 402 [2018-01-23 14:37:39,209 INFO L226 Difference]: Without dead ends: 390 [2018-01-23 14:37:39,210 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 480 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=765, Unknown=0, NotChecked=0, Total=992 [2018-01-23 14:37:39,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2018-01-23 14:37:39,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 243. [2018-01-23 14:37:39,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2018-01-23 14:37:39,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 273 transitions. [2018-01-23 14:37:39,237 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 273 transitions. Word has length 452 [2018-01-23 14:37:39,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:39,237 INFO L432 AbstractCegarLoop]: Abstraction has 243 states and 273 transitions. [2018-01-23 14:37:39,237 INFO L433 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-01-23 14:37:39,238 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 273 transitions. [2018-01-23 14:37:39,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2018-01-23 14:37:39,241 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:39,242 INFO L322 BasicCegarLoop]: trace histogram [39, 33, 30, 30, 30, 30, 30, 24, 24, 24, 24, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:39,242 INFO L371 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:37:39,242 INFO L82 PathProgramCache]: Analyzing trace with hash 2121513854, now seen corresponding path program 7 times [2018-01-23 14:37:39,243 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:39,243 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:39,244 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:39,244 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:37:39,244 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:39,320 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:39,881 INFO L134 CoverageAnalysis]: Checked inductivity of 5880 backedges. 0 proven. 270 refuted. 0 times theorem prover too weak. 5610 trivial. 0 not checked. [2018-01-23 14:37:39,881 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:37:39,881 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:37:39,886 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:37:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:40,029 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:37:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 5880 backedges. 3223 proven. 21 refuted. 0 times theorem prover too weak. 2636 trivial. 0 not checked. [2018-01-23 14:37:40,592 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:37:40,592 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 23 [2018-01-23 14:37:40,593 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-23 14:37:40,593 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-23 14:37:40,593 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2018-01-23 14:37:40,594 INFO L87 Difference]: Start difference. First operand 243 states and 273 transitions. Second operand 23 states. [2018-01-23 14:37:41,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:41,088 INFO L93 Difference]: Finished difference Result 628 states and 803 transitions. [2018-01-23 14:37:41,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-01-23 14:37:41,089 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 546 [2018-01-23 14:37:41,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:41,094 INFO L225 Difference]: With dead ends: 628 [2018-01-23 14:37:41,094 INFO L226 Difference]: Without dead ends: 486 [2018-01-23 14:37:41,097 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 571 GetRequests, 537 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=240, Invalid=1020, Unknown=0, NotChecked=0, Total=1260 [2018-01-23 14:37:41,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2018-01-23 14:37:41,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 252. [2018-01-23 14:37:41,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2018-01-23 14:37:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 286 transitions. [2018-01-23 14:37:41,130 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 286 transitions. Word has length 546 [2018-01-23 14:37:41,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:41,131 INFO L432 AbstractCegarLoop]: Abstraction has 252 states and 286 transitions. [2018-01-23 14:37:41,131 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-23 14:37:41,131 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 286 transitions. [2018-01-23 14:37:41,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 640 [2018-01-23 14:37:41,136 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:41,137 INFO L322 BasicCegarLoop]: trace histogram [44, 43, 34, 34, 34, 34, 33, 33, 33, 33, 33, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:41,137 INFO L371 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:37:41,137 INFO L82 PathProgramCache]: Analyzing trace with hash -659879117, now seen corresponding path program 8 times [2018-01-23 14:37:41,137 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:41,137 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:41,138 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:41,139 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:37:41,139 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:41,218 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 8458 backedges. 0 proven. 335 refuted. 0 times theorem prover too weak. 8123 trivial. 0 not checked. [2018-01-23 14:37:42,057 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:37:42,057 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:37:42,062 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-01-23 14:37:42,103 INFO L201 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:42,210 INFO L214 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:42,224 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:37:42,238 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:37:42,632 INFO L134 CoverageAnalysis]: Checked inductivity of 8458 backedges. 3905 proven. 24 refuted. 0 times theorem prover too weak. 4529 trivial. 0 not checked. [2018-01-23 14:37:42,655 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:37:42,656 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 23 [2018-01-23 14:37:42,656 INFO L409 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-01-23 14:37:42,657 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-01-23 14:37:42,657 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2018-01-23 14:37:42,657 INFO L87 Difference]: Start difference. First operand 252 states and 286 transitions. Second operand 23 states. [2018-01-23 14:37:43,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:43,421 INFO L93 Difference]: Finished difference Result 471 states and 542 transitions. [2018-01-23 14:37:43,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-01-23 14:37:43,421 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 639 [2018-01-23 14:37:43,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:43,424 INFO L225 Difference]: With dead ends: 471 [2018-01-23 14:37:43,424 INFO L226 Difference]: Without dead ends: 312 [2018-01-23 14:37:43,425 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 634 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=295, Invalid=1111, Unknown=0, NotChecked=0, Total=1406 [2018-01-23 14:37:43,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2018-01-23 14:37:43,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 250. [2018-01-23 14:37:43,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2018-01-23 14:37:43,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 275 transitions. [2018-01-23 14:37:43,442 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 275 transitions. Word has length 639 [2018-01-23 14:37:43,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:43,443 INFO L432 AbstractCegarLoop]: Abstraction has 250 states and 275 transitions. [2018-01-23 14:37:43,443 INFO L433 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-01-23 14:37:43,443 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 275 transitions. [2018-01-23 14:37:43,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 715 [2018-01-23 14:37:43,446 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:43,447 INFO L322 BasicCegarLoop]: trace histogram [49, 49, 38, 38, 38, 38, 38, 38, 38, 38, 38, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:43,447 INFO L371 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:37:43,447 INFO L82 PathProgramCache]: Analyzing trace with hash 22721670, now seen corresponding path program 9 times [2018-01-23 14:37:43,447 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:43,447 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:43,448 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:43,448 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:37:43,448 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:43,499 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:44,332 INFO L134 CoverageAnalysis]: Checked inductivity of 10802 backedges. 0 proven. 407 refuted. 0 times theorem prover too weak. 10395 trivial. 0 not checked. [2018-01-23 14:37:44,332 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:37:44,332 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:37:44,338 INFO L101 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-01-23 14:37:44,397 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:37:44,405 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:37:44,422 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:37:44,433 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:37:44,465 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:37:44,554 INFO L254 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued a check-sat command [2018-01-23 14:37:44,557 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:37:44,567 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:37:44,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10802 backedges. 1136 proven. 44 refuted. 0 times theorem prover too weak. 9622 trivial. 0 not checked. [2018-01-23 14:37:44,875 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:37:44,875 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 21 [2018-01-23 14:37:44,876 INFO L409 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-01-23 14:37:44,876 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-01-23 14:37:44,876 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2018-01-23 14:37:44,877 INFO L87 Difference]: Start difference. First operand 250 states and 275 transitions. Second operand 21 states. [2018-01-23 14:37:45,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:45,320 INFO L93 Difference]: Finished difference Result 613 states and 728 transitions. [2018-01-23 14:37:45,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-01-23 14:37:45,320 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 714 [2018-01-23 14:37:45,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:45,326 INFO L225 Difference]: With dead ends: 613 [2018-01-23 14:37:45,327 INFO L226 Difference]: Without dead ends: 601 [2018-01-23 14:37:45,328 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 713 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=174, Invalid=528, Unknown=0, NotChecked=0, Total=702 [2018-01-23 14:37:45,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2018-01-23 14:37:45,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 316. [2018-01-23 14:37:45,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2018-01-23 14:37:45,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 356 transitions. [2018-01-23 14:37:45,391 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 356 transitions. Word has length 714 [2018-01-23 14:37:45,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:45,393 INFO L432 AbstractCegarLoop]: Abstraction has 316 states and 356 transitions. [2018-01-23 14:37:45,393 INFO L433 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-01-23 14:37:45,393 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 356 transitions. [2018-01-23 14:37:45,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 832 [2018-01-23 14:37:45,400 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:45,401 INFO L322 BasicCegarLoop]: trace histogram [62, 54, 50, 50, 50, 50, 50, 42, 42, 42, 42, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:45,401 INFO L371 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:37:45,402 INFO L82 PathProgramCache]: Analyzing trace with hash -404037829, now seen corresponding path program 10 times [2018-01-23 14:37:45,402 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:45,402 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:45,403 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:45,403 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:37:45,403 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:45,488 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:46,470 INFO L134 CoverageAnalysis]: Checked inductivity of 15537 backedges. 0 proven. 486 refuted. 0 times theorem prover too weak. 15051 trivial. 0 not checked. [2018-01-23 14:37:46,470 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:37:46,470 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:37:46,475 INFO L101 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-01-23 14:37:46,622 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:37:46,632 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:37:47,061 INFO L134 CoverageAnalysis]: Checked inductivity of 15537 backedges. 7749 proven. 38 refuted. 0 times theorem prover too weak. 7750 trivial. 0 not checked. [2018-01-23 14:37:47,098 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:37:47,098 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2018-01-23 14:37:47,099 INFO L409 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-01-23 14:37:47,099 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-01-23 14:37:47,100 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2018-01-23 14:37:47,100 INFO L87 Difference]: Start difference. First operand 316 states and 356 transitions. Second operand 28 states. [2018-01-23 14:37:47,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:47,720 INFO L93 Difference]: Finished difference Result 856 states and 1118 transitions. [2018-01-23 14:37:47,720 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-01-23 14:37:47,721 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 831 [2018-01-23 14:37:47,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:47,727 INFO L225 Difference]: With dead ends: 856 [2018-01-23 14:37:47,727 INFO L226 Difference]: Without dead ends: 686 [2018-01-23 14:37:47,731 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 820 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=376, Invalid=1604, Unknown=0, NotChecked=0, Total=1980 [2018-01-23 14:37:47,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2018-01-23 14:37:47,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 325. [2018-01-23 14:37:47,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325 states. [2018-01-23 14:37:47,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 370 transitions. [2018-01-23 14:37:47,781 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 370 transitions. Word has length 831 [2018-01-23 14:37:47,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:47,783 INFO L432 AbstractCegarLoop]: Abstraction has 325 states and 370 transitions. [2018-01-23 14:37:47,783 INFO L433 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-01-23 14:37:47,783 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 370 transitions. [2018-01-23 14:37:47,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 946 [2018-01-23 14:37:47,792 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:47,793 INFO L322 BasicCegarLoop]: trace histogram [68, 67, 55, 55, 55, 55, 54, 54, 54, 54, 54, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:47,793 INFO L371 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:37:47,793 INFO L82 PathProgramCache]: Analyzing trace with hash 824439311, now seen corresponding path program 11 times [2018-01-23 14:37:47,793 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:47,793 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:47,794 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:47,794 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:37:47,794 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:47,891 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 20821 backedges. 0 proven. 572 refuted. 0 times theorem prover too weak. 20249 trivial. 0 not checked. [2018-01-23 14:37:49,162 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:37:49,162 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:37:49,184 INFO L101 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-01-23 14:37:49,253 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:49,259 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:49,276 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:49,331 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:49,373 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:49,398 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:49,422 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:49,496 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:49,978 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:51,117 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:55,456 INFO L278 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued a check-sat command [2018-01-23 14:37:55,463 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:37:55,482 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:37:56,188 INFO L134 CoverageAnalysis]: Checked inductivity of 20821 backedges. 8965 proven. 251 refuted. 0 times theorem prover too weak. 11605 trivial. 0 not checked. [2018-01-23 14:37:56,211 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:37:56,211 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 17] total 31 [2018-01-23 14:37:56,212 INFO L409 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-01-23 14:37:56,212 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-01-23 14:37:56,212 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=756, Unknown=0, NotChecked=0, Total=930 [2018-01-23 14:37:56,213 INFO L87 Difference]: Start difference. First operand 325 states and 370 transitions. Second operand 31 states. [2018-01-23 14:37:57,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:37:57,128 INFO L93 Difference]: Finished difference Result 564 states and 653 transitions. [2018-01-23 14:37:57,129 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-01-23 14:37:57,129 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 945 [2018-01-23 14:37:57,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:37:57,131 INFO L225 Difference]: With dead ends: 564 [2018-01-23 14:37:57,131 INFO L226 Difference]: Without dead ends: 377 [2018-01-23 14:37:57,134 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 995 GetRequests, 936 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=598, Invalid=3062, Unknown=0, NotChecked=0, Total=3660 [2018-01-23 14:37:57,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2018-01-23 14:37:57,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 323. [2018-01-23 14:37:57,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2018-01-23 14:37:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 357 transitions. [2018-01-23 14:37:57,178 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 357 transitions. Word has length 945 [2018-01-23 14:37:57,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:37:57,178 INFO L432 AbstractCegarLoop]: Abstraction has 323 states and 357 transitions. [2018-01-23 14:37:57,179 INFO L433 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-01-23 14:37:57,179 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 357 transitions. [2018-01-23 14:37:57,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1032 [2018-01-23 14:37:57,189 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:37:57,189 INFO L322 BasicCegarLoop]: trace histogram [74, 74, 60, 60, 60, 60, 60, 60, 60, 60, 60, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:37:57,190 INFO L371 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:37:57,190 INFO L82 PathProgramCache]: Analyzing trace with hash 611870515, now seen corresponding path program 12 times [2018-01-23 14:37:57,190 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:37:57,190 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:37:57,191 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:57,191 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:37:57,191 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:37:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:37:57,293 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:37:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 25133 backedges. 0 proven. 665 refuted. 0 times theorem prover too weak. 24468 trivial. 0 not checked. [2018-01-23 14:37:58,678 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:37:58,678 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:37:58,683 INFO L101 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-01-23 14:37:58,729 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:37:58,735 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:37:58,744 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:37:58,752 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:37:58,853 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:37:58,979 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:37:59,231 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:00,121 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:01,183 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:03,873 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:06,457 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:11,039 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:13,560 INFO L310 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued a check-sat command [2018-01-23 14:38:13,567 INFO L239 tOrderPrioritization]: Conjunction of SSA is unsat [2018-01-23 14:38:13,586 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 25133 backedges. 2113 proven. 70 refuted. 0 times theorem prover too weak. 22950 trivial. 0 not checked. [2018-01-23 14:38:14,142 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:14,142 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12] total 25 [2018-01-23 14:38:14,143 INFO L409 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-01-23 14:38:14,143 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-01-23 14:38:14,143 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2018-01-23 14:38:14,143 INFO L87 Difference]: Start difference. First operand 323 states and 357 transitions. Second operand 25 states. [2018-01-23 14:38:14,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:14,597 INFO L93 Difference]: Finished difference Result 873 states and 1055 transitions. [2018-01-23 14:38:14,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-01-23 14:38:14,597 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 1031 [2018-01-23 14:38:14,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:14,602 INFO L225 Difference]: With dead ends: 873 [2018-01-23 14:38:14,602 INFO L226 Difference]: Without dead ends: 861 [2018-01-23 14:38:14,603 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 1060 GetRequests, 1030 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=243, Invalid=749, Unknown=0, NotChecked=0, Total=992 [2018-01-23 14:38:14,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2018-01-23 14:38:14,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 395. [2018-01-23 14:38:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2018-01-23 14:38:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 446 transitions. [2018-01-23 14:38:14,645 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 446 transitions. Word has length 1031 [2018-01-23 14:38:14,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:14,646 INFO L432 AbstractCegarLoop]: Abstraction has 395 states and 446 transitions. [2018-01-23 14:38:14,646 INFO L433 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-01-23 14:38:14,646 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 446 transitions. [2018-01-23 14:38:14,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1172 [2018-01-23 14:38:14,655 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:14,655 INFO L322 BasicCegarLoop]: trace histogram [90, 80, 75, 75, 75, 75, 75, 65, 65, 65, 65, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:14,656 INFO L371 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:14,656 INFO L82 PathProgramCache]: Analyzing trace with hash 23922991, now seen corresponding path program 13 times [2018-01-23 14:38:14,656 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:14,656 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:14,657 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:14,657 INFO L99 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-01-23 14:38:14,657 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:14,730 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-01-23 14:38:16,350 INFO L134 CoverageAnalysis]: Checked inductivity of 33905 backedges. 0 proven. 765 refuted. 0 times theorem prover too weak. 33140 trivial. 0 not checked. [2018-01-23 14:38:16,351 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-23 14:38:16,351 INFO L209 onRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-23 14:38:16,356 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:38:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:16,615 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:38:17,470 INFO L134 CoverageAnalysis]: Checked inductivity of 33905 backedges. 15826 proven. 60 refuted. 0 times theorem prover too weak. 18019 trivial. 0 not checked. [2018-01-23 14:38:17,494 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-01-23 14:38:17,494 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 33 [2018-01-23 14:38:17,495 INFO L409 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-01-23 14:38:17,495 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-01-23 14:38:17,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=842, Unknown=0, NotChecked=0, Total=1056 [2018-01-23 14:38:17,496 INFO L87 Difference]: Start difference. First operand 395 states and 446 transitions. Second operand 33 states. [2018-01-23 14:38:18,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:38:18,350 INFO L93 Difference]: Finished difference Result 1118 states and 1484 transitions. [2018-01-23 14:38:18,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-01-23 14:38:18,351 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 1171 [2018-01-23 14:38:18,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:38:18,357 INFO L225 Difference]: With dead ends: 1118 [2018-01-23 14:38:18,357 INFO L226 Difference]: Without dead ends: 920 [2018-01-23 14:38:18,361 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 1210 GetRequests, 1158 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=543, Invalid=2319, Unknown=0, NotChecked=0, Total=2862 [2018-01-23 14:38:18,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2018-01-23 14:38:18,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 404. [2018-01-23 14:38:18,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2018-01-23 14:38:18,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 461 transitions. [2018-01-23 14:38:18,450 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 461 transitions. Word has length 1171 [2018-01-23 14:38:18,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:38:18,451 INFO L432 AbstractCegarLoop]: Abstraction has 404 states and 461 transitions. [2018-01-23 14:38:18,451 INFO L433 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-01-23 14:38:18,451 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 461 transitions. [2018-01-23 14:38:18,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1307 [2018-01-23 14:38:18,474 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:38:18,474 INFO L322 BasicCegarLoop]: trace histogram [97, 96, 81, 81, 81, 81, 80, 80, 80, 80, 80, 17, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-23 14:38:18,474 INFO L371 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:38:18,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1951046782, now seen corresponding path program 14 times [2018-01-23 14:38:18,475 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:38:18,475 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:38:18,476 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:18,477 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:38:18,477 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:38:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:38:18,613 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. Received shutdown request... [2018-01-23 14:38:19,569 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Timeout exceeded at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:264) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.access$1(Interpolator.java:262) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator$ProofTreeWalker.walk(Interpolator.java:131) 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:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:200) 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:279) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:162) 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:218) 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:368) 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:294) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:157) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:113) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:117) 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) [2018-01-23 14:38:19,572 INFO L168 Benchmark]: Toolchain (without parser) took 49221.01 ms. Allocated memory was 293.1 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 254.0 MB in the beginning and 1.2 GB in the end (delta: -961.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 5.3 GB. [2018-01-23 14:38:19,574 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 293.1 MB. Free memory is still 259.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-23 14:38:19,574 INFO L168 Benchmark]: CACSL2BoogieTranslator took 177.27 ms. Allocated memory is still 293.1 MB. Free memory was 254.0 MB in the beginning and 244.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. [2018-01-23 14:38:19,574 INFO L168 Benchmark]: Boogie Preprocessor took 32.66 ms. Allocated memory is still 293.1 MB. Free memory was 244.9 MB in the beginning and 243.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:38:19,575 INFO L168 Benchmark]: RCFGBuilder took 308.97 ms. Allocated memory is still 293.1 MB. Free memory was 243.0 MB in the beginning and 225.0 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:38:19,575 INFO L168 Benchmark]: TraceAbstraction took 48694.74 ms. Allocated memory was 293.1 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 225.0 MB in the beginning and 1.2 GB in the end (delta: -990.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 5.3 GB. [2018-01-23 14:38:19,576 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 293.1 MB. Free memory is still 259.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 177.27 ms. Allocated memory is still 293.1 MB. Free memory was 254.0 MB in the beginning and 244.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 32.66 ms. Allocated memory is still 293.1 MB. Free memory was 244.9 MB in the beginning and 243.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 308.97 ms. Allocated memory is still 293.1 MB. Free memory was 243.0 MB in the beginning and 225.0 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 48694.74 ms. Allocated memory was 293.1 MB in the beginning and 2.3 GB in the end (delta: 2.0 GB). Free memory was 225.0 MB in the beginning and 1.2 GB in the end (delta: -990.3 MB). Peak memory consumption was 1.8 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: barErr0EnsuresViolation CFG has 5 procedures, 62 locations, 5 error locations. SAFE Result, 0.3s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 66 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 17 PreInvPairs, 21 NumberOfFragments, 12 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 361 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: - StatisticsResult: Ultimate Automizer benchmark data for error location: ULTIMATE.initErr0EnsuresViolation CFG has 5 procedures, 62 locations, 5 error locations. UNSAFE Result, 0.0s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - PositiveResult [Line: 20]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data for error location: fooErr0EnsuresViolation CFG has 5 procedures, 62 locations, 5 error locations. SAFE Result, 0.7s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 175 SDtfs, 104 SDslu, 345 SDs, 0 SdLazy, 164 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 17 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 10806 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, REUSE_STATISTICS: No data available - ExceptionOrErrorResult: SMTLIBException: Timeout exceeded de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Timeout exceeded: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.walkLeafNode(Interpolator.java:264) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-write.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-Benchmark-0-2018-01-23_14-38-19-583.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-write.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-0-2018-01-23_14-38-19-583.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-write.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-1-2018-01-23_14-38-19-583.csv Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/ArraysOfVariableLength2_false-valid-deref-write.c_mempurity-32bit-Automizer_Camel+AI_EQ.epf_AutomizerC.xml/Csv-TraceAbstractionBenchmarks-2-2018-01-23_14-38-19-583.csv Completed graceful shutdown