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/array-memsafety/mult_array_unsafe_false-valid-deref.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-47db877 [2018-01-23 14:20:44,312 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-23 14:20:44,313 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-23 14:20:44,326 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-23 14:20:44,327 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-23 14:20:44,328 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-23 14:20:44,329 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-23 14:20:44,330 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-23 14:20:44,333 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-23 14:20:44,333 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-23 14:20:44,334 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-23 14:20:44,334 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-23 14:20:44,335 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-23 14:20:44,335 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-23 14:20:44,336 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-23 14:20:44,339 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-23 14:20:44,341 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-23 14:20:44,343 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-23 14:20:44,344 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-23 14:20:44,345 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-23 14:20:44,348 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-23 14:20:44,348 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-23 14:20:44,348 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-23 14:20:44,349 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-23 14:20:44,350 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-23 14:20:44,351 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-23 14:20:44,351 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-23 14:20:44,352 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-23 14:20:44,352 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-23 14:20:44,352 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-23 14:20:44,353 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-23 14:20:44,353 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 14:20:44,363 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-23 14:20:44,364 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-23 14:20:44,364 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-23 14:20:44,365 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-23 14:20:44,365 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-23 14:20:44,365 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-23 14:20:44,365 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-23 14:20:44,366 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-23 14:20:44,366 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-23 14:20:44,366 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-23 14:20:44,367 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-23 14:20:44,367 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-23 14:20:44,367 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-23 14:20:44,367 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-23 14:20:44,367 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-23 14:20:44,367 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-23 14:20:44,368 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-23 14:20:44,368 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-23 14:20:44,368 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-23 14:20:44,368 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-23 14:20:44,369 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-23 14:20:44,369 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-23 14:20:44,369 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-23 14:20:44,369 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-23 14:20:44,369 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-23 14:20:44,370 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-23 14:20:44,370 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-23 14:20:44,370 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-23 14:20:44,370 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-23 14:20:44,370 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-23 14:20:44,371 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-23 14:20:44,371 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-23 14:20:44,371 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-23 14:20:44,371 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-23 14:20:44,371 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-23 14:20:44,372 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-23 14:20:44,372 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-23 14:20:44,406 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-23 14:20:44,419 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-23 14:20:44,423 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-23 14:20:44,425 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-23 14:20:44,426 INFO L276 PluginConnector]: CDTParser initialized [2018-01-23 14:20:44,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/mult_array_unsafe_false-valid-deref.i [2018-01-23 14:20:44,613 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-23 14:20:44,616 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-23 14:20:44,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-23 14:20:44,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-23 14:20:44,622 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-23 14:20:44,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:20:44" (1/1) ... [2018-01-23 14:20:44,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1266e3d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:44, skipping insertion in model container [2018-01-23 14:20:44,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.01 02:20:44" (1/1) ... [2018-01-23 14:20:44,638 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:20:44,676 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-23 14:20:44,792 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:20:44,809 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-23 14:20:44,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:44 WrapperNode [2018-01-23 14:20:44,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-23 14:20:44,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-23 14:20:44,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-23 14:20:44,818 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-23 14:20:44,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:44" (1/1) ... [2018-01-23 14:20:44,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:44" (1/1) ... [2018-01-23 14:20:44,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:44" (1/1) ... [2018-01-23 14:20:44,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:44" (1/1) ... [2018-01-23 14:20:44,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:44" (1/1) ... [2018-01-23 14:20:44,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:44" (1/1) ... [2018-01-23 14:20:44,853 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:44" (1/1) ... [2018-01-23 14:20:44,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-23 14:20:44,855 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-23 14:20:44,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-23 14:20:44,856 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-23 14:20:44,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:44" (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 14:20:44,900 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-23 14:20:44,900 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-23 14:20:44,900 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-23 14:20:44,900 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-23 14:20:44,900 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-23 14:20:44,901 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-23 14:20:44,901 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-23 14:20:44,901 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-23 14:20:44,901 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-23 14:20:44,901 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-23 14:20:44,901 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-23 14:20:44,901 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-23 14:20:45,093 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-23 14:20:45,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:20:45 BoogieIcfgContainer [2018-01-23 14:20:45,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-23 14:20:45,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-23 14:20:45,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-23 14:20:45,096 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-23 14:20:45,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.01 02:20:44" (1/3) ... [2018-01-23 14:20:45,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633afcd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:20:45, skipping insertion in model container [2018-01-23 14:20:45,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.01 02:20:44" (2/3) ... [2018-01-23 14:20:45,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@633afcd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.01 02:20:45, skipping insertion in model container [2018-01-23 14:20:45,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.01 02:20:45" (3/3) ... [2018-01-23 14:20:45,101 INFO L105 eAbstractionObserver]: Analyzing ICFG mult_array_unsafe_false-valid-deref.i [2018-01-23 14:20:45,108 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-23 14:20:45,113 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-23 14:20:45,160 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:20:45,160 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:20:45,160 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:20:45,160 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:20:45,160 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:20:45,160 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:20:45,161 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:20:45,161 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-23 14:20:45,162 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:20:45,182 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-23 14:20:45,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-23 14:20:45,189 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:45,190 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-23 14:20:45,190 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-23 14:20:45,195 INFO L82 PathProgramCache]: Analyzing trace with hash 100907, now seen corresponding path program 1 times [2018-01-23 14:20:45,198 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:45,198 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:45,253 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:45,253 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:45,253 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:20:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:20:45,308 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:20:45,313 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:20:45,319 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:20:45,319 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:20:45,319 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:20:45,319 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:20:45,319 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:20:45,320 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:20:45,320 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:20:45,320 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-23 14:20:45,320 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:20:45,321 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-23 14:20:45,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-23 14:20:45,323 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:45,323 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] [2018-01-23 14:20:45,323 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:20:45,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1756096489, now seen corresponding path program 1 times [2018-01-23 14:20:45,323 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:45,323 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:45,324 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:45,325 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:45,325 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:45,342 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:20:45,342 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:20:45,342 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-23 14:20:45,351 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:45,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:45,392 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:20:45,524 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 14:20:45,548 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:45,549 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-23 14:20:45,550 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-23 14:20:45,565 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-23 14:20:45,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-23 14:20:45,569 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2018-01-23 14:20:45,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:45,736 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-23 14:20:45,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-23 14:20:45,739 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-01-23 14:20:45,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:45,748 INFO L225 Difference]: With dead ends: 60 [2018-01-23 14:20:45,748 INFO L226 Difference]: Without dead ends: 35 [2018-01-23 14:20:45,752 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-01-23 14:20:45,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-23 14:20:45,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-01-23 14:20:45,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-23 14:20:45,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-23 14:20:45,792 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 21 [2018-01-23 14:20:45,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:45,793 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-23 14:20:45,793 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-23 14:20:45,793 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-23 14:20:45,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-23 14:20:45,794 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:45,794 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] [2018-01-23 14:20:45,794 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:20:45,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1252120768, now seen corresponding path program 1 times [2018-01-23 14:20:45,794 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:45,794 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:45,795 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:45,795 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:45,795 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:45,806 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:20:45,806 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:20:45,807 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-23 14:20:45,813 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:45,835 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:20:45,883 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 14:20:45,904 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:45,904 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-23 14:20:45,906 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-23 14:20:45,906 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-23 14:20:45,906 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-23 14:20:45,906 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 4 states. [2018-01-23 14:20:45,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:45,962 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2018-01-23 14:20:45,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-23 14:20:45,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-23 14:20:45,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:45,964 INFO L225 Difference]: With dead ends: 56 [2018-01-23 14:20:45,964 INFO L226 Difference]: Without dead ends: 40 [2018-01-23 14:20:45,965 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-23 14:20:45,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-23 14:20:45,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-01-23 14:20:45,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-23 14:20:45,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-01-23 14:20:45,971 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 27 [2018-01-23 14:20:45,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:45,972 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-01-23 14:20:45,972 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-23 14:20:45,972 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-01-23 14:20:45,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-23 14:20:45,973 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:45,973 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] [2018-01-23 14:20:45,973 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:20:45,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1880809997, now seen corresponding path program 1 times [2018-01-23 14:20:45,974 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:45,974 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:45,975 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:45,975 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:45,975 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:45,982 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:20:45,982 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:20:45,983 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-23 14:20:45,992 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:46,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:46,013 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:20:46,056 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 14:20:46,091 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:46,091 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-23 14:20:46,091 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:20:46,092 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:20:46,092 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:20:46,092 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2018-01-23 14:20:46,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:46,198 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2018-01-23 14:20:46,199 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:20:46,199 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-23 14:20:46,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:46,203 INFO L225 Difference]: With dead ends: 102 [2018-01-23 14:20:46,204 INFO L226 Difference]: Without dead ends: 93 [2018-01-23 14:20:46,204 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:20:46,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-23 14:20:46,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2018-01-23 14:20:46,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-23 14:20:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-23 14:20:46,215 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-23 14:20:46,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:46,215 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-23 14:20:46,215 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:20:46,216 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-23 14:20:46,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-23 14:20:46,217 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:46,217 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] [2018-01-23 14:20:46,217 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:20:46,217 INFO L82 PathProgramCache]: Analyzing trace with hash -2014823503, now seen corresponding path program 1 times [2018-01-23 14:20:46,217 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:46,217 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:46,218 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:46,219 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:46,219 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:46,228 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:20:46,229 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:20:46,229 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-23 14:20:46,238 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:46,263 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:20:46,314 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 14:20:46,348 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:46,349 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-23 14:20:46,349 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:20:46,349 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:20:46,350 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:20:46,350 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-23 14:20:46,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:46,459 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2018-01-23 14:20:46,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:20:46,460 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-23 14:20:46,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:46,461 INFO L225 Difference]: With dead ends: 95 [2018-01-23 14:20:46,462 INFO L226 Difference]: Without dead ends: 86 [2018-01-23 14:20:46,462 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:20:46,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-01-23 14:20:46,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 54. [2018-01-23 14:20:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-23 14:20:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-23 14:20:46,471 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-23 14:20:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:46,471 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-23 14:20:46,471 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:20:46,472 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-23 14:20:46,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-23 14:20:46,473 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:46,473 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] [2018-01-23 14:20:46,473 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:20:46,473 INFO L82 PathProgramCache]: Analyzing trace with hash -1818770383, now seen corresponding path program 1 times [2018-01-23 14:20:46,473 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:46,473 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:46,474 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:46,475 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:46,475 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:46,483 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:20:46,483 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:20:46,484 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-23 14:20:46,498 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:46,524 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:20:46,551 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 14:20:46,582 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:46,582 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-23 14:20:46,582 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:20:46,583 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:20:46,583 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:20:46,583 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-23 14:20:46,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:46,642 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2018-01-23 14:20:46,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:20:46,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-23 14:20:46,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:46,645 INFO L225 Difference]: With dead ends: 110 [2018-01-23 14:20:46,645 INFO L226 Difference]: Without dead ends: 101 [2018-01-23 14:20:46,646 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:20:46,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-01-23 14:20:46,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 54. [2018-01-23 14:20:46,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-23 14:20:46,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-23 14:20:46,656 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-23 14:20:46,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:46,657 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-23 14:20:46,657 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:20:46,657 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-23 14:20:46,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-23 14:20:46,658 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:46,659 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] [2018-01-23 14:20:46,659 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:20:46,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1952783889, now seen corresponding path program 1 times [2018-01-23 14:20:46,659 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:46,660 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:46,661 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:46,661 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:46,661 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:46,669 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:20:46,669 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:20:46,670 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-23 14:20:46,687 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:46,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:46,706 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:20:46,753 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 14:20:46,774 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:46,774 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-23 14:20:46,774 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:20:46,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:20:46,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:20:46,775 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-23 14:20:46,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:46,812 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2018-01-23 14:20:46,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:20:46,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-23 14:20:46,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:46,814 INFO L225 Difference]: With dead ends: 69 [2018-01-23 14:20:46,814 INFO L226 Difference]: Without dead ends: 60 [2018-01-23 14:20:46,814 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:20:46,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-23 14:20:46,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2018-01-23 14:20:46,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-23 14:20:46,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-01-23 14:20:46,821 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2018-01-23 14:20:46,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:46,822 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-01-23 14:20:46,822 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:20:46,822 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-01-23 14:20:46,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-23 14:20:46,823 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:46,823 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] [2018-01-23 14:20:46,823 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-23 14:20:46,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1166525403, now seen corresponding path program 1 times [2018-01-23 14:20:46,823 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:46,824 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:46,825 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:46,825 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:46,825 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:46,832 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:20:46,832 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:20:46,832 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-23 14:20:46,838 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:20:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-23 14:20:46,923 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-23 14:20:46,936 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:20:46,943 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:20:46,944 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-23 14:20:46,961 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-23 14:20:46,961 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-23 14:20:46,962 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-23 14:20:46,962 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-23 14:20:46,962 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-23 14:20:46,962 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-23 14:20:46,962 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-23 14:20:46,962 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-23 14:20:46,962 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-23 14:20:46,964 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-23 14:20:46,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-23 14:20:46,965 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:46,966 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 14:20:46,966 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-23 14:20:46,966 INFO L82 PathProgramCache]: Analyzing trace with hash 2112136767, now seen corresponding path program 1 times [2018-01-23 14:20:46,966 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:46,967 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:46,968 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:46,969 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:46,969 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:46,975 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:20:46,975 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:20:46,976 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-23 14:20:46,986 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:47,042 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:20:47,126 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 14:20:47,148 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:47,149 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-23 14:20:47,149 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-23 14:20:47,149 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-23 14:20:47,149 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-23 14:20:47,149 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2018-01-23 14:20:47,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:47,242 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-23 14:20:47,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-23 14:20:47,243 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-23 14:20:47,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:47,244 INFO L225 Difference]: With dead ends: 60 [2018-01-23 14:20:47,245 INFO L226 Difference]: Without dead ends: 33 [2018-01-23 14:20:47,245 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-01-23 14:20:47,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-01-23 14:20:47,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-01-23 14:20:47,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-01-23 14:20:47,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-01-23 14:20:47,251 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 19 [2018-01-23 14:20:47,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:47,251 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-01-23 14:20:47,251 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-23 14:20:47,251 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-01-23 14:20:47,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-23 14:20:47,252 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:47,252 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] [2018-01-23 14:20:47,252 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-23 14:20:47,252 INFO L82 PathProgramCache]: Analyzing trace with hash 197950760, now seen corresponding path program 1 times [2018-01-23 14:20:47,252 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:47,253 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:47,253 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:47,254 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:47,254 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:47,260 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:20:47,260 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:20:47,260 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-23 14:20:47,271 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:47,284 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:20:47,321 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 14:20:47,355 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:47,355 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-23 14:20:47,355 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-23 14:20:47,356 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-23 14:20:47,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-23 14:20:47,356 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 4 states. [2018-01-23 14:20:47,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:47,385 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2018-01-23 14:20:47,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-23 14:20:47,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-01-23 14:20:47,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:47,386 INFO L225 Difference]: With dead ends: 52 [2018-01-23 14:20:47,386 INFO L226 Difference]: Without dead ends: 38 [2018-01-23 14:20:47,387 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-23 14:20:47,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-23 14:20:47,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2018-01-23 14:20:47,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-23 14:20:47,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-23 14:20:47,390 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 25 [2018-01-23 14:20:47,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:47,390 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-23 14:20:47,390 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-23 14:20:47,390 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-23 14:20:47,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-23 14:20:47,391 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:47,391 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] [2018-01-23 14:20:47,391 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-23 14:20:47,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1753910501, now seen corresponding path program 1 times [2018-01-23 14:20:47,391 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:47,391 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:47,392 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:47,392 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:47,393 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:47,397 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:20:47,398 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:20:47,398 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-23 14:20:47,408 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:47,424 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:20:47,448 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 14:20:47,469 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:47,469 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-23 14:20:47,469 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:20:47,469 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:20:47,469 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:20:47,469 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 5 states. [2018-01-23 14:20:47,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:47,519 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2018-01-23 14:20:47,519 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:20:47,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-23 14:20:47,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:47,520 INFO L225 Difference]: With dead ends: 98 [2018-01-23 14:20:47,520 INFO L226 Difference]: Without dead ends: 91 [2018-01-23 14:20:47,520 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:20:47,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-01-23 14:20:47,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 52. [2018-01-23 14:20:47,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-23 14:20:47,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-23 14:20:47,526 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-23 14:20:47,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:47,526 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-23 14:20:47,526 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:20:47,526 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-23 14:20:47,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-23 14:20:47,527 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:47,527 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] [2018-01-23 14:20:47,527 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation]=== [2018-01-23 14:20:47,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1535055783, now seen corresponding path program 1 times [2018-01-23 14:20:47,527 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:47,527 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:47,528 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:47,528 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:47,528 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:47,532 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:20:47,532 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:20:47,533 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-23 14:20:47,538 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:47,550 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:20:47,584 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 14:20:47,605 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:47,605 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-23 14:20:47,606 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:20:47,606 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:20:47,606 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:20:47,606 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 5 states. [2018-01-23 14:20:47,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:47,676 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2018-01-23 14:20:47,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:20:47,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-23 14:20:47,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:47,677 INFO L225 Difference]: With dead ends: 91 [2018-01-23 14:20:47,677 INFO L226 Difference]: Without dead ends: 84 [2018-01-23 14:20:47,678 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:20:47,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-01-23 14:20:47,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 52. [2018-01-23 14:20:47,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-23 14:20:47,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-23 14:20:47,684 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-23 14:20:47,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:47,685 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-23 14:20:47,685 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:20:47,685 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-23 14:20:47,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-23 14:20:47,686 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:47,686 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] [2018-01-23 14:20:47,686 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation]=== [2018-01-23 14:20:47,686 INFO L82 PathProgramCache]: Analyzing trace with hash -1887924007, now seen corresponding path program 1 times [2018-01-23 14:20:47,686 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:47,687 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:47,687 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:47,688 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:47,688 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:47,694 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:20:47,694 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:20:47,694 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-23 14:20:47,704 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:47,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:47,719 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:20:47,799 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 14:20:47,822 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:47,822 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-23 14:20:47,823 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-23 14:20:47,823 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-23 14:20:47,823 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:20:47,823 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 5 states. [2018-01-23 14:20:47,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:47,874 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2018-01-23 14:20:47,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-23 14:20:47,874 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-23 14:20:47,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:47,875 INFO L225 Difference]: With dead ends: 106 [2018-01-23 14:20:47,875 INFO L226 Difference]: Without dead ends: 99 [2018-01-23 14:20:47,875 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-23 14:20:47,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-01-23 14:20:47,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 52. [2018-01-23 14:20:47,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-23 14:20:47,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-23 14:20:47,883 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-23 14:20:47,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:47,883 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-23 14:20:47,883 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-23 14:20:47,883 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-23 14:20:47,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-23 14:20:47,884 INFO L314 BasicCegarLoop]: Found error trace [2018-01-23 14:20:47,884 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] [2018-01-23 14:20:47,885 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation]=== [2018-01-23 14:20:47,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1669069289, now seen corresponding path program 1 times [2018-01-23 14:20:47,885 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-23 14:20:47,885 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-23 14:20:47,886 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:47,886 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:47,886 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-23 14:20:47,893 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-23 14:20:47,893 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-23 14:20:47,893 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 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-23 14:20:47,905 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-23 14:20:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-23 14:20:47,924 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-23 14:20:47,987 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc2.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc2.base| 1))) (and (= |c_#valid| (store (store .cse0 |c_main_#t~malloc3.base| 1) |main_#t~malloc2.base| 0)) (= (select |c_old(#valid)| |main_#t~malloc2.base|) 0) (= (select .cse0 |c_main_#t~malloc3.base|) 0)))) is different from true [2018-01-23 14:20:47,997 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc2.base| Int) (|main_#t~malloc3.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc2.base| 1))) (and (= |c_#valid| (store (store (store .cse0 |main_#t~malloc3.base| 1) |main_#t~malloc2.base| 0) |main_#t~malloc3.base| 0)) (= (select |c_old(#valid)| |main_#t~malloc2.base|) 0) (= (select .cse0 |main_#t~malloc3.base|) 0)))) is different from true [2018-01-23 14:20:48,004 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 14:20:48,025 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-23 14:20:48,025 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-23 14:20:48,026 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-23 14:20:48,026 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-23 14:20:48,026 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=15, Unknown=2, NotChecked=14, Total=42 [2018-01-23 14:20:48,026 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 7 states. [2018-01-23 14:20:48,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-23 14:20:48,060 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2018-01-23 14:20:48,061 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-23 14:20:48,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-01-23 14:20:48,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-23 14:20:48,061 INFO L225 Difference]: With dead ends: 52 [2018-01-23 14:20:48,061 INFO L226 Difference]: Without dead ends: 0 [2018-01-23 14:20:48,062 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=15, Unknown=2, NotChecked=14, Total=42 [2018-01-23 14:20:48,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-23 14:20:48,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-23 14:20:48,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-23 14:20:48,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-23 14:20:48,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-01-23 14:20:48,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-23 14:20:48,063 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-23 14:20:48,063 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-23 14:20:48,063 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-23 14:20:48,064 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-23 14:20:48,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.01 02:20:48 BoogieIcfgContainer [2018-01-23 14:20:48,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-23 14:20:48,068 INFO L168 Benchmark]: Toolchain (without parser) took 3454.58 ms. Allocated memory was 299.4 MB in the beginning and 470.3 MB in the end (delta: 170.9 MB). Free memory was 259.3 MB in the beginning and 329.8 MB in the end (delta: -70.5 MB). Peak memory consumption was 100.4 MB. Max. memory is 5.3 GB. [2018-01-23 14:20:48,070 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 299.4 MB. Free memory is still 265.3 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-23 14:20:48,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 200.14 ms. Allocated memory is still 299.4 MB. Free memory was 258.3 MB in the beginning and 248.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. [2018-01-23 14:20:48,071 INFO L168 Benchmark]: Boogie Preprocessor took 37.28 ms. Allocated memory is still 299.4 MB. Free memory was 248.2 MB in the beginning and 247.2 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. [2018-01-23 14:20:48,071 INFO L168 Benchmark]: RCFGBuilder took 238.85 ms. Allocated memory is still 299.4 MB. Free memory was 247.2 MB in the beginning and 230.2 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. [2018-01-23 14:20:48,072 INFO L168 Benchmark]: TraceAbstraction took 2972.74 ms. Allocated memory was 299.4 MB in the beginning and 470.3 MB in the end (delta: 170.9 MB). Free memory was 230.2 MB in the beginning and 329.8 MB in the end (delta: -99.6 MB). Peak memory consumption was 71.3 MB. Max. memory is 5.3 GB. [2018-01-23 14:20:48,075 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 299.4 MB. Free memory is still 265.3 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 200.14 ms. Allocated memory is still 299.4 MB. Free memory was 258.3 MB in the beginning and 248.2 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 37.28 ms. Allocated memory is still 299.4 MB. Free memory was 248.2 MB in the beginning and 247.2 MB in the end (delta: 996.2 kB). Peak memory consumption was 996.2 kB. Max. memory is 5.3 GB. * RCFGBuilder took 238.85 ms. Allocated memory is still 299.4 MB. Free memory was 247.2 MB in the beginning and 230.2 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2972.74 ms. Allocated memory was 299.4 MB in the beginning and 470.3 MB in the end (delta: 170.9 MB). Free memory was 230.2 MB in the beginning and 329.8 MB in the end (delta: -99.6 MB). Peak memory consumption was 71.3 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 3 procedures, 42 locations, 3 error locations. UNSAFE Result, 0.1s 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=42occurred 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 - CounterExampleResult [Line: 1]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L541] int i, j; [L542] int length = __VERIFIER_nondet_int(); [L543] COND TRUE length < 1 || length >= 2147483647 / sizeof(int) [L543] length = 1 VAL [length=1] [L544] int fac = __VERIFIER_nondet_int(); [L545] COND TRUE fac < 1 || fac >= 2147483647 / (sizeof(int) * length) [L545] fac = 1 VAL [fac=1, length=1] [L546] EXPR, FCALL __builtin_alloca (length) VAL [__builtin_alloca (length)={9:0}, fac=1, length=1] [L546] int *arr = __builtin_alloca (length); VAL [__builtin_alloca (length)={9:0}, arr={9:0}, fac=1, length=1] [L547] EXPR, FCALL __builtin_alloca (fac*length) VAL [__builtin_alloca (fac*length)={7:0}, __builtin_alloca (length)={9:0}, arr={9:0}, fac=1, length=1] [L547] int *arr2 = __builtin_alloca (fac*length); VAL [__builtin_alloca (fac*length)={7:0}, __builtin_alloca (length)={9:0}, arr={9:0}, arr2={7:0}, fac=1, length=1] [L548] COND FALSE !(!arr || !arr2) [L549] i=0 VAL [__builtin_alloca (fac*length)={7:0}, __builtin_alloca (length)={9:0}, arr={9:0}, arr2={7:0}, fac=1, i=0, length=1] [L549] COND TRUE i