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 0.1.23-2f49842 [2018-01-20 21:54:39,667 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 21:54:39,669 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 21:54:39,683 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 21:54:39,683 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 21:54:39,684 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 21:54:39,685 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 21:54:39,687 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 21:54:39,689 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 21:54:39,689 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 21:54:39,690 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 21:54:39,691 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 21:54:39,691 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 21:54:39,693 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 21:54:39,693 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 21:54:39,696 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 21:54:39,698 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 21:54:39,700 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 21:54:39,701 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 21:54:39,702 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 21:54:39,704 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-20 21:54:39,704 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-20 21:54:39,705 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-20 21:54:39,706 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-20 21:54:39,706 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-20 21:54:39,707 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-20 21:54:39,708 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-20 21:54:39,708 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-20 21:54:39,709 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-20 21:54:39,709 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 21:54:39,709 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 21:54:39,710 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 [2018-01-20 21:54:39,717 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 21:54:39,718 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 21:54:39,718 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 21:54:39,718 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 21:54:39,719 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 21:54:39,719 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 21:54:39,719 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 21:54:39,719 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 21:54:39,719 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 21:54:39,719 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 21:54:39,719 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 21:54:39,720 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 21:54:39,720 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 21:54:39,720 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 21:54:39,720 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 21:54:39,720 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 21:54:39,720 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 21:54:39,720 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 21:54:39,720 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 21:54:39,721 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 21:54:39,721 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 21:54:39,721 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 21:54:39,721 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 21:54:39,721 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 21:54:39,721 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 21:54:39,722 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 21:54:39,722 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 21:54:39,722 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 21:54:39,722 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 21:54:39,722 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 21:54:39,722 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 21:54:39,722 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-01-20 21:54:39,723 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 21:54:39,723 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 21:54:39,723 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 21:54:39,723 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 21:54:39,723 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 21:54:39,756 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 21:54:39,767 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 21:54:39,770 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 21:54:39,771 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 21:54:39,771 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 21:54:39,772 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/mult_array_unsafe_false-valid-deref.i [2018-01-20 21:54:39,942 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 21:54:39,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 21:54:39,946 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 21:54:39,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 21:54:39,952 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 21:54:39,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:54:39" (1/1) ... [2018-01-20 21:54:39,955 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a9c6c05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:39, skipping insertion in model container [2018-01-20 21:54:39,956 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 09:54:39" (1/1) ... [2018-01-20 21:54:39,969 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 21:54:40,005 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 21:54:40,132 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 21:54:40,149 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 21:54:40,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:40 WrapperNode [2018-01-20 21:54:40,157 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 21:54:40,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 21:54:40,158 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 21:54:40,158 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 21:54:40,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:40" (1/1) ... [2018-01-20 21:54:40,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:40" (1/1) ... [2018-01-20 21:54:40,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:40" (1/1) ... [2018-01-20 21:54:40,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:40" (1/1) ... [2018-01-20 21:54:40,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:40" (1/1) ... [2018-01-20 21:54:40,191 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:40" (1/1) ... [2018-01-20 21:54:40,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:40" (1/1) ... [2018-01-20 21:54:40,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 21:54:40,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 21:54:40,195 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 21:54:40,195 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 21:54:40,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:40" (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 [2018-01-20 21:54:40,240 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 21:54:40,240 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 21:54:40,240 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 21:54:40,240 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 21:54:40,240 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 21:54:40,241 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 21:54:40,241 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 21:54:40,241 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 21:54:40,241 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 21:54:40,241 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 21:54:40,241 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 21:54:40,242 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 21:54:40,450 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 21:54:40,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:54:40 BoogieIcfgContainer [2018-01-20 21:54:40,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 21:54:40,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 21:54:40,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 21:54:40,453 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 21:54:40,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 09:54:39" (1/3) ... [2018-01-20 21:54:40,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29271b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:54:40, skipping insertion in model container [2018-01-20 21:54:40,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 09:54:40" (2/3) ... [2018-01-20 21:54:40,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29271b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 09:54:40, skipping insertion in model container [2018-01-20 21:54:40,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 09:54:40" (3/3) ... [2018-01-20 21:54:40,456 INFO L105 eAbstractionObserver]: Analyzing ICFG mult_array_unsafe_false-valid-deref.i [2018-01-20 21:54:40,462 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 21:54:40,468 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-20 21:54:40,510 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:54:40,510 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:54:40,511 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:54:40,511 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:54:40,511 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:54:40,511 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:54:40,511 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:54:40,511 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 21:54:40,512 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:54:40,526 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-20 21:54:40,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 21:54:40,531 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:40,532 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 21:54:40,532 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 21:54:40,538 INFO L82 PathProgramCache]: Analyzing trace with hash 100907, now seen corresponding path program 1 times [2018-01-20 21:54:40,540 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:40,541 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:40,585 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:40,586 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:40,586 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:54:40,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:54:40,637 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 21:54:40,643 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:54:40,649 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:54:40,649 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:54:40,649 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:54:40,649 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:54:40,649 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:54:40,649 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:54:40,649 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:54:40,649 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 21:54:40,649 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:54:40,651 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-20 21:54:40,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-20 21:54:40,652 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:40,652 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] [2018-01-20 21:54:40,652 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:54:40,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1756096489, now seen corresponding path program 1 times [2018-01-20 21:54:40,652 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:40,653 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:40,653 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:40,654 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:40,654 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:40,672 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:54:40,672 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:54:40,672 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 [2018-01-20 21:54:40,678 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:40,713 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:54:40,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 21:54:40,886 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:54:40,886 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-20 21:54:40,888 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-20 21:54:40,960 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-20 21:54:40,960 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-20 21:54:40,962 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2018-01-20 21:54:41,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:41,069 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-20 21:54:41,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-20 21:54:41,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-01-20 21:54:41,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:41,083 INFO L225 Difference]: With dead ends: 60 [2018-01-20 21:54:41,083 INFO L226 Difference]: Without dead ends: 35 [2018-01-20 21:54:41,087 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 [2018-01-20 21:54:41,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-20 21:54:41,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-01-20 21:54:41,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-20 21:54:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-20 21:54:41,128 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 21 [2018-01-20 21:54:41,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:41,129 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-20 21:54:41,129 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-20 21:54:41,129 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-20 21:54:41,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-20 21:54:41,130 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:41,131 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] [2018-01-20 21:54:41,131 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:54:41,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1252120768, now seen corresponding path program 1 times [2018-01-20 21:54:41,131 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:41,131 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:41,132 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:41,133 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:41,133 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:41,142 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:54:41,143 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:54:41,143 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 [2018-01-20 21:54:41,154 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:41,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:41,180 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:54:41,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 21:54:41,233 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:54:41,233 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-20 21:54:41,235 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 21:54:41,235 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 21:54:41,235 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-20 21:54:41,236 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 4 states. [2018-01-20 21:54:41,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:41,286 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2018-01-20 21:54:41,286 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 21:54:41,286 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-20 21:54:41,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:41,288 INFO L225 Difference]: With dead ends: 56 [2018-01-20 21:54:41,288 INFO L226 Difference]: Without dead ends: 40 [2018-01-20 21:54:41,289 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 [2018-01-20 21:54:41,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-20 21:54:41,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-01-20 21:54:41,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-20 21:54:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-01-20 21:54:41,295 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 27 [2018-01-20 21:54:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:41,296 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-01-20 21:54:41,296 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 21:54:41,296 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-01-20 21:54:41,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-20 21:54:41,297 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:41,297 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] [2018-01-20 21:54:41,297 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:54:41,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1880809997, now seen corresponding path program 1 times [2018-01-20 21:54:41,298 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:41,298 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:41,299 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:41,299 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:41,300 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:41,308 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:54:41,308 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:54:41,308 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 [2018-01-20 21:54:41,316 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:41,339 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:54:41,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-20 21:54:41,435 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:54:41,435 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-20 21:54:41,435 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 21:54:41,436 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 21:54:41,436 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:54:41,436 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2018-01-20 21:54:41,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:41,526 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2018-01-20 21:54:41,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 21:54:41,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-20 21:54:41,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:41,531 INFO L225 Difference]: With dead ends: 102 [2018-01-20 21:54:41,532 INFO L226 Difference]: Without dead ends: 93 [2018-01-20 21:54:41,532 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 [2018-01-20 21:54:41,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-20 21:54:41,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2018-01-20 21:54:41,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-20 21:54:41,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-20 21:54:41,543 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-20 21:54:41,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:41,544 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-20 21:54:41,544 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 21:54:41,544 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-20 21:54:41,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-20 21:54:41,545 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:41,545 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] [2018-01-20 21:54:41,545 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:54:41,546 INFO L82 PathProgramCache]: Analyzing trace with hash -2014823503, now seen corresponding path program 1 times [2018-01-20 21:54:41,546 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:41,546 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:41,547 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:41,547 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:41,547 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:41,557 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:54:41,558 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:54:41,558 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 [2018-01-20 21:54:41,565 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:41,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:41,584 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:54:41,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-20 21:54:41,651 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:54:41,651 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-20 21:54:41,652 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 21:54:41,652 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 21:54:41,652 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:54:41,652 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-20 21:54:41,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:41,778 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2018-01-20 21:54:41,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 21:54:41,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-20 21:54:41,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:41,780 INFO L225 Difference]: With dead ends: 95 [2018-01-20 21:54:41,780 INFO L226 Difference]: Without dead ends: 86 [2018-01-20 21:54:41,780 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 [2018-01-20 21:54:41,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-01-20 21:54:41,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 54. [2018-01-20 21:54:41,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-20 21:54:41,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-20 21:54:41,787 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-20 21:54:41,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:41,787 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-20 21:54:41,787 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 21:54:41,787 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-20 21:54:41,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-20 21:54:41,788 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:41,788 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] [2018-01-20 21:54:41,788 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:54:41,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1818770383, now seen corresponding path program 1 times [2018-01-20 21:54:41,788 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:41,788 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:41,789 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:41,789 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:41,789 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:41,797 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:54:41,797 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:54:41,798 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 [2018-01-20 21:54:41,806 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:41,828 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:54:41,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-20 21:54:41,886 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:54:41,886 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-20 21:54:41,887 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 21:54:41,887 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 21:54:41,887 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:54:41,887 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-20 21:54:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:41,974 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2018-01-20 21:54:41,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 21:54:41,975 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-20 21:54:41,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:41,976 INFO L225 Difference]: With dead ends: 110 [2018-01-20 21:54:41,977 INFO L226 Difference]: Without dead ends: 101 [2018-01-20 21:54:41,977 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 [2018-01-20 21:54:41,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-01-20 21:54:41,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 54. [2018-01-20 21:54:41,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-20 21:54:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-20 21:54:41,987 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-20 21:54:41,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:41,987 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-20 21:54:41,987 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 21:54:41,988 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-20 21:54:41,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-20 21:54:41,989 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:41,989 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] [2018-01-20 21:54:41,989 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:54:41,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1952783889, now seen corresponding path program 1 times [2018-01-20 21:54:41,990 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:41,990 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:41,991 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:41,991 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:41,991 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:41,998 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:54:41,998 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:54:41,998 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 [2018-01-20 21:54:42,008 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:42,029 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:54:42,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-20 21:54:42,122 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:54:42,122 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-20 21:54:42,122 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 21:54:42,122 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 21:54:42,123 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:54:42,123 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-20 21:54:42,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:42,164 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2018-01-20 21:54:42,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 21:54:42,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-20 21:54:42,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:42,166 INFO L225 Difference]: With dead ends: 69 [2018-01-20 21:54:42,166 INFO L226 Difference]: Without dead ends: 60 [2018-01-20 21:54:42,167 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 [2018-01-20 21:54:42,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-20 21:54:42,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2018-01-20 21:54:42,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-20 21:54:42,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-01-20 21:54:42,172 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2018-01-20 21:54:42,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:42,172 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-01-20 21:54:42,172 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 21:54:42,172 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-01-20 21:54:42,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-20 21:54:42,173 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:42,173 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] [2018-01-20 21:54:42,173 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 21:54:42,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1166525403, now seen corresponding path program 1 times [2018-01-20 21:54:42,174 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:42,174 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:42,175 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:42,175 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:42,175 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:42,180 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:54:42,180 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:54:42,180 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 [2018-01-20 21:54:42,185 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:54:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 21:54:42,264 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 21:54:42,286 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:54:42,294 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:54:42,294 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 21:54:42,309 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 21:54:42,309 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 21:54:42,309 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 21:54:42,309 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 21:54:42,309 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 21:54:42,309 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 21:54:42,310 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 21:54:42,310 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 21:54:42,310 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 21:54:42,310 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-20 21:54:42,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-20 21:54:42,311 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:42,311 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-20 21:54:42,312 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-20 21:54:42,312 INFO L82 PathProgramCache]: Analyzing trace with hash 2112136767, now seen corresponding path program 1 times [2018-01-20 21:54:42,312 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:42,312 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:42,313 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:42,313 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:42,313 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:42,319 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:54:42,320 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:54:42,320 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 [2018-01-20 21:54:42,332 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:42,346 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:54:42,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 21:54:42,460 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:54:42,460 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-20 21:54:42,460 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-20 21:54:42,461 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-20 21:54:42,461 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-20 21:54:42,461 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2018-01-20 21:54:42,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:42,540 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-20 21:54:42,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-20 21:54:42,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-20 21:54:42,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:42,542 INFO L225 Difference]: With dead ends: 60 [2018-01-20 21:54:42,542 INFO L226 Difference]: Without dead ends: 33 [2018-01-20 21:54:42,543 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 [2018-01-20 21:54:42,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-01-20 21:54:42,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-01-20 21:54:42,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-01-20 21:54:42,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-01-20 21:54:42,546 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 19 [2018-01-20 21:54:42,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:42,546 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-01-20 21:54:42,546 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-20 21:54:42,547 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-01-20 21:54:42,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-20 21:54:42,547 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:42,547 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] [2018-01-20 21:54:42,548 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-20 21:54:42,548 INFO L82 PathProgramCache]: Analyzing trace with hash 197950760, now seen corresponding path program 1 times [2018-01-20 21:54:42,548 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:42,548 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:42,549 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:42,549 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:42,549 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:42,555 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:54:42,555 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:54:42,555 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 [2018-01-20 21:54:42,566 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:42,582 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:54:42,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-20 21:54:42,640 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:54:42,641 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-01-20 21:54:42,641 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 21:54:42,641 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 21:54:42,641 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-01-20 21:54:42,641 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 4 states. [2018-01-20 21:54:42,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:42,668 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2018-01-20 21:54:42,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 21:54:42,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-01-20 21:54:42,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:42,668 INFO L225 Difference]: With dead ends: 52 [2018-01-20 21:54:42,669 INFO L226 Difference]: Without dead ends: 38 [2018-01-20 21:54:42,669 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 [2018-01-20 21:54:42,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-20 21:54:42,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2018-01-20 21:54:42,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-20 21:54:42,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-20 21:54:42,672 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 25 [2018-01-20 21:54:42,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:42,672 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-20 21:54:42,672 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 21:54:42,672 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-20 21:54:42,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 21:54:42,673 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:42,673 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] [2018-01-20 21:54:42,673 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-20 21:54:42,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1753910501, now seen corresponding path program 1 times [2018-01-20 21:54:42,673 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:42,673 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:42,674 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:42,674 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:42,674 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:42,679 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:54:42,679 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:54:42,679 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 [2018-01-20 21:54:42,688 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:42,705 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:54:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-20 21:54:42,755 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:54:42,756 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-20 21:54:42,756 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 21:54:42,756 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 21:54:42,756 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:54:42,756 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 5 states. [2018-01-20 21:54:42,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:42,850 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2018-01-20 21:54:42,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 21:54:42,851 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-20 21:54:42,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:42,852 INFO L225 Difference]: With dead ends: 98 [2018-01-20 21:54:42,852 INFO L226 Difference]: Without dead ends: 91 [2018-01-20 21:54:42,853 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 [2018-01-20 21:54:42,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-01-20 21:54:42,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 52. [2018-01-20 21:54:42,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-20 21:54:42,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-20 21:54:42,860 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-20 21:54:42,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:42,860 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-20 21:54:42,860 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 21:54:42,861 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-20 21:54:42,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 21:54:42,861 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:42,862 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] [2018-01-20 21:54:42,862 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation]=== [2018-01-20 21:54:42,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1535055783, now seen corresponding path program 1 times [2018-01-20 21:54:42,862 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:42,862 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:42,863 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:42,863 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:42,863 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:42,869 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:54:42,869 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:54:42,869 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 [2018-01-20 21:54:42,877 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:42,892 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:54:42,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-20 21:54:42,975 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:54:42,975 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-20 21:54:42,975 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 21:54:42,975 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 21:54:42,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:54:42,976 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 5 states. [2018-01-20 21:54:43,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:43,048 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2018-01-20 21:54:43,049 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 21:54:43,049 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-20 21:54:43,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:43,050 INFO L225 Difference]: With dead ends: 91 [2018-01-20 21:54:43,050 INFO L226 Difference]: Without dead ends: 84 [2018-01-20 21:54:43,050 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 [2018-01-20 21:54:43,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-01-20 21:54:43,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 52. [2018-01-20 21:54:43,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-20 21:54:43,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-20 21:54:43,056 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-20 21:54:43,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:43,056 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-20 21:54:43,056 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 21:54:43,057 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-20 21:54:43,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 21:54:43,057 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:43,058 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] [2018-01-20 21:54:43,058 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation]=== [2018-01-20 21:54:43,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1887924007, now seen corresponding path program 1 times [2018-01-20 21:54:43,058 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:43,058 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:43,059 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:43,059 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:43,060 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:43,066 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:54:43,066 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:54:43,066 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 [2018-01-20 21:54:43,076 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:43,091 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:54:43,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-20 21:54:43,154 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:54:43,154 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-01-20 21:54:43,155 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 21:54:43,155 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 21:54:43,155 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-01-20 21:54:43,155 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 5 states. [2018-01-20 21:54:43,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:43,209 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2018-01-20 21:54:43,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 21:54:43,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-20 21:54:43,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:43,210 INFO L225 Difference]: With dead ends: 106 [2018-01-20 21:54:43,210 INFO L226 Difference]: Without dead ends: 99 [2018-01-20 21:54:43,211 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 [2018-01-20 21:54:43,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-01-20 21:54:43,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 52. [2018-01-20 21:54:43,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-20 21:54:43,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-20 21:54:43,216 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-20 21:54:43,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:43,217 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-20 21:54:43,217 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 21:54:43,217 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-20 21:54:43,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 21:54:43,218 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 21:54:43,218 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] [2018-01-20 21:54:43,218 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation]=== [2018-01-20 21:54:43,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1669069289, now seen corresponding path program 1 times [2018-01-20 21:54:43,219 INFO L209 onRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-01-20 21:54:43,219 INFO L67 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-01-20 21:54:43,220 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:43,220 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:43,220 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 21:54:43,226 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 21:54:43,226 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 21:54:43,227 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 [2018-01-20 21:54:43,242 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 21:54:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 21:54:43,262 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 21:54:43,309 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 [2018-01-20 21:54:43,321 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 [2018-01-20 21:54:43,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-20 21:54:43,350 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 21:54:43,351 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-01-20 21:54:43,351 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-20 21:54:43,351 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-20 21:54:43,351 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=15, Unknown=2, NotChecked=14, Total=42 [2018-01-20 21:54:43,352 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 7 states. [2018-01-20 21:54:43,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 21:54:43,392 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2018-01-20 21:54:43,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-20 21:54:43,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-01-20 21:54:43,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 21:54:43,393 INFO L225 Difference]: With dead ends: 52 [2018-01-20 21:54:43,394 INFO L226 Difference]: Without dead ends: 0 [2018-01-20 21:54:43,394 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 [2018-01-20 21:54:43,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-20 21:54:43,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-20 21:54:43,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-20 21:54:43,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-20 21:54:43,395 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-01-20 21:54:43,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 21:54:43,395 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-20 21:54:43,395 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-20 21:54:43,396 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-20 21:54:43,396 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-20 21:54:43,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 09:54:43 BoogieIcfgContainer [2018-01-20 21:54:43,399 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 21:54:43,400 INFO L168 Benchmark]: Toolchain (without parser) took 3458.11 ms. Allocated memory was 307.8 MB in the beginning and 481.3 MB in the end (delta: 173.5 MB). Free memory was 265.7 MB in the beginning and 335.4 MB in the end (delta: -69.7 MB). Peak memory consumption was 103.8 MB. Max. memory is 5.3 GB. [2018-01-20 21:54:43,402 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 307.8 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 21:54:43,402 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.67 ms. Allocated memory is still 307.8 MB. Free memory was 264.7 MB in the beginning and 254.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-20 21:54:43,403 INFO L168 Benchmark]: Boogie Preprocessor took 36.15 ms. Allocated memory is still 307.8 MB. Free memory was 254.7 MB in the beginning and 253.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. [2018-01-20 21:54:43,403 INFO L168 Benchmark]: RCFGBuilder took 256.34 ms. Allocated memory is still 307.8 MB. Free memory was 252.7 MB in the beginning and 236.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 5.3 GB. [2018-01-20 21:54:43,404 INFO L168 Benchmark]: TraceAbstraction took 2948.04 ms. Allocated memory was 307.8 MB in the beginning and 481.3 MB in the end (delta: 173.5 MB). Free memory was 236.6 MB in the beginning and 335.4 MB in the end (delta: -98.8 MB). Peak memory consumption was 74.7 MB. Max. memory is 5.3 GB. [2018-01-20 21:54:43,407 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 307.8 MB. Free memory is still 271.7 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 211.67 ms. Allocated memory is still 307.8 MB. Free memory was 264.7 MB in the beginning and 254.7 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 36.15 ms. Allocated memory is still 307.8 MB. Free memory was 254.7 MB in the beginning and 253.7 MB in the end (delta: 996.1 kB). Peak memory consumption was 996.1 kB. Max. memory is 5.3 GB. * RCFGBuilder took 256.34 ms. Allocated memory is still 307.8 MB. Free memory was 252.7 MB in the beginning and 236.6 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 5.3 GB. * TraceAbstraction took 2948.04 ms. Allocated memory was 307.8 MB in the beginning and 481.3 MB in the end (delta: 173.5 MB). Free memory was 236.6 MB in the beginning and 335.4 MB in the end (delta: -98.8 MB). Peak memory consumption was 74.7 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