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_Taipan+AI_EQ.epf -i ../../../trunk/examples/svcomp/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-20 23:24:42,932 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-20 23:24:42,934 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-20 23:24:42,951 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-20 23:24:42,951 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-20 23:24:42,952 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-20 23:24:42,953 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-20 23:24:42,955 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-20 23:24:42,957 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-20 23:24:42,958 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-20 23:24:42,959 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-20 23:24:42,959 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-20 23:24:42,960 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-20 23:24:42,961 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-20 23:24:42,962 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-20 23:24:42,965 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-20 23:24:42,967 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-20 23:24:42,969 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-20 23:24:42,971 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-20 23:24:42,972 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-20 23:24:42,975 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-01-20 23:24:42,975 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-01-20 23:24:42,975 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-01-20 23:24:42,976 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-01-20 23:24:42,977 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-01-20 23:24:42,979 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-01-20 23:24:42,979 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-01-20 23:24:42,980 INFO L177 SettingsManager]: PEA to Boogie provides no preferences, ignoring... [2018-01-20 23:24:42,980 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-01-20 23:24:42,980 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-20 23:24:42,981 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-20 23:24:42,981 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/mempurity-32bit-Automizer_Taipan+AI_EQ.epf [2018-01-20 23:24:42,989 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-20 23:24:42,990 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-20 23:24:42,990 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-20 23:24:42,991 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-20 23:24:42,991 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-20 23:24:42,991 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-20 23:24:42,991 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-20 23:24:42,991 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-20 23:24:42,992 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-20 23:24:42,992 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-20 23:24:42,992 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-20 23:24:42,992 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-20 23:24:42,992 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-20 23:24:42,992 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-20 23:24:42,992 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-20 23:24:42,993 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-20 23:24:42,993 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-20 23:24:42,993 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-20 23:24:42,993 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-20 23:24:42,993 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-20 23:24:42,993 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-20 23:24:42,993 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-20 23:24:42,994 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-20 23:24:42,994 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-20 23:24:42,994 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-20 23:24:42,994 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-20 23:24:42,994 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-20 23:24:42,994 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-20 23:24:42,995 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-20 23:24:42,995 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-20 23:24:42,995 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-20 23:24:42,995 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-20 23:24:42,995 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-20 23:24:42,995 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-20 23:24:42,995 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-20 23:24:42,995 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-20 23:24:42,996 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-20 23:24:42,996 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-20 23:24:43,029 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-20 23:24:43,039 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-20 23:24:43,042 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-20 23:24:43,044 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-20 23:24:43,044 INFO L276 PluginConnector]: CDTParser initialized [2018-01-20 23:24:43,045 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i [2018-01-20 23:24:43,194 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-20 23:24:43,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-20 23:24:43,227 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-20 23:24:43,228 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-20 23:24:43,232 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-20 23:24:43,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:24:43" (1/1) ... [2018-01-20 23:24:43,236 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@719878db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:24:43, skipping insertion in model container [2018-01-20 23:24:43,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.01 11:24:43" (1/1) ... [2018-01-20 23:24:43,248 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:24:43,284 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-20 23:24:43,408 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:24:43,426 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-20 23:24:43,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:24:43 WrapperNode [2018-01-20 23:24:43,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-20 23:24:43,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-20 23:24:43,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-20 23:24:43,435 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-20 23:24:43,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:24:43" (1/1) ... [2018-01-20 23:24:43,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:24:43" (1/1) ... [2018-01-20 23:24:43,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:24:43" (1/1) ... [2018-01-20 23:24:43,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:24:43" (1/1) ... [2018-01-20 23:24:43,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:24:43" (1/1) ... [2018-01-20 23:24:43,469 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:24:43" (1/1) ... [2018-01-20 23:24:43,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:24:43" (1/1) ... [2018-01-20 23:24:43,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-20 23:24:43,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-20 23:24:43,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-20 23:24:43,474 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-20 23:24:43,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:24:43" (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 23:24:43,530 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-20 23:24:43,530 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-20 23:24:43,530 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-20 23:24:43,531 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-20 23:24:43,531 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-20 23:24:43,531 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-20 23:24:43,531 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-20 23:24:43,531 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-20 23:24:43,531 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-20 23:24:43,531 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-20 23:24:43,532 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-20 23:24:43,532 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-20 23:24:43,719 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-20 23:24:43,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:24:43 BoogieIcfgContainer [2018-01-20 23:24:43,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-20 23:24:43,720 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-20 23:24:43,720 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-20 23:24:43,722 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-20 23:24:43,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.01 11:24:43" (1/3) ... [2018-01-20 23:24:43,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548ad49c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:24:43, skipping insertion in model container [2018-01-20 23:24:43,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.01 11:24:43" (2/3) ... [2018-01-20 23:24:43,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548ad49c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.01 11:24:43, skipping insertion in model container [2018-01-20 23:24:43,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.01 11:24:43" (3/3) ... [2018-01-20 23:24:43,725 INFO L105 eAbstractionObserver]: Analyzing ICFG mult_array-alloca_true-valid-memsafety_true-termination.i [2018-01-20 23:24:43,731 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-20 23:24:43,738 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-20 23:24:43,788 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:24:43,789 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:24:43,789 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:24:43,789 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:24:43,789 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:24:43,789 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:24:43,790 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:24:43,790 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-20 23:24:43,791 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:24:43,812 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-20 23:24:43,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-20 23:24:43,820 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:24:43,821 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-20 23:24:43,821 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-20 23:24:43,827 INFO L82 PathProgramCache]: Analyzing trace with hash 100907, now seen corresponding path program 1 times [2018-01-20 23:24:43,830 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:24:43,883 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:43,884 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:43,884 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:43,884 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:24:43,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:24:43,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:24:43,938 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:24:43,944 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:24:43,952 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:24:43,952 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:24:43,952 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:24:43,952 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:24:43,952 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:24:43,953 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:24:43,953 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:24:43,953 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-20 23:24:43,953 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:24:43,955 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-20 23:24:43,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-20 23:24:43,957 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:24:43,957 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 23:24:43,958 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:24:43,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1756096489, now seen corresponding path program 1 times [2018-01-20 23:24:43,958 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:24:43,959 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:43,960 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:43,960 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:43,960 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:24:43,979 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 23:24:43,979 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 23:24:43,979 INFO L164 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG 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 23:24:43,986 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:43,987 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-20 23:24:44,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:24:44,039 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-20 23:24:44,040 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-20 23:24:44,041 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 23:24:44,041 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-20 23:24:44,047 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:44,047 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-20 23:24:44,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:24:44,087 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 23:24:44,193 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 23:24:44,193 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-20 23:24:44,295 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 23:24:44,331 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:24:44,332 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2018-01-20 23:24:44,332 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:24:44,334 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-20 23:24:44,345 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-20 23:24:44,345 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-20 23:24:44,347 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2018-01-20 23:24:44,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:24:44,485 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-20 23:24:44,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-20 23:24:44,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-01-20 23:24:44,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:24:44,499 INFO L225 Difference]: With dead ends: 60 [2018-01-20 23:24:44,499 INFO L226 Difference]: Without dead ends: 35 [2018-01-20 23:24:44,502 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 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 23:24:44,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-20 23:24:44,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-01-20 23:24:44,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-20 23:24:44,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-20 23:24:44,537 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 21 [2018-01-20 23:24:44,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:24:44,537 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-20 23:24:44,537 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-20 23:24:44,538 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-20 23:24:44,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-20 23:24:44,538 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:24:44,539 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 23:24:44,539 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:24:44,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1252120768, now seen corresponding path program 1 times [2018-01-20 23:24:44,539 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:24:44,540 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:44,540 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:44,540 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:44,540 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:24:44,551 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 23:24:44,551 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 23:24:44,551 INFO L164 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG 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 23:24:44,563 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:44,563 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-20 23:24:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:24:44,603 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-20 23:24:44,603 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-20 23:24:44,603 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 23:24:44,603 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-20 23:24:44,609 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:44,609 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-20 23:24:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:24:44,627 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 23:24:44,644 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 23:24:44,644 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-20 23:24:44,676 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 23:24:44,698 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:24:44,699 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-01-20 23:24:44,699 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:24:44,699 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 23:24:44,700 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 23:24:44,700 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-20 23:24:44,700 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 4 states. [2018-01-20 23:24:44,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:24:44,757 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2018-01-20 23:24:44,757 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 23:24:44,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-20 23:24:44,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:24:44,759 INFO L225 Difference]: With dead ends: 56 [2018-01-20 23:24:44,759 INFO L226 Difference]: Without dead ends: 40 [2018-01-20 23:24:44,760 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-20 23:24:44,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-20 23:24:44,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-01-20 23:24:44,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-20 23:24:44,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-01-20 23:24:44,766 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 27 [2018-01-20 23:24:44,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:24:44,767 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-01-20 23:24:44,767 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 23:24:44,767 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-01-20 23:24:44,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-20 23:24:44,768 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:24:44,768 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 23:24:44,768 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:24:44,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1880809997, now seen corresponding path program 1 times [2018-01-20 23:24:44,769 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:24:44,770 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:44,770 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:44,770 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:44,770 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:24:44,778 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 23:24:44,778 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 23:24:44,779 INFO L164 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG 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 23:24:44,790 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:44,790 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-20 23:24:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:24:44,837 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-20 23:24:44,839 INFO L201 CegarAbsIntRunner]: [0], [1], [6], [7], [10], [14], [17], [21], [22], [23], [24], [32], [36], [39], [41], [42], [43], [45], [49], [53], [56], [67], [68], [69], [70], [71], [72], [74], [75], [76], [77] [2018-01-20 23:24:44,893 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-20 23:24:44,893 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-20 23:24:46,997 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-20 23:24:46,999 INFO L268 AbstractInterpreter]: Visited 31 different actions 47 times. Merged at 15 different actions 15 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 27 variables. [2018-01-20 23:24:47,006 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-20 23:24:47,006 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 23:24:47,006 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-20 23:24:47,015 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:47,015 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-20 23:24:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:24:47,046 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 23:24:47,110 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 23:24:47,111 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-20 23:24:47,197 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 23:24:47,233 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:24:47,233 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-01-20 23:24:47,233 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:24:47,234 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 23:24:47,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 23:24:47,234 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-20 23:24:47,235 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2018-01-20 23:24:47,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:24:47,344 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2018-01-20 23:24:47,344 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 23:24:47,345 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-20 23:24:47,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:24:47,349 INFO L225 Difference]: With dead ends: 102 [2018-01-20 23:24:47,349 INFO L226 Difference]: Without dead ends: 93 [2018-01-20 23:24:47,350 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-20 23:24:47,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-20 23:24:47,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2018-01-20 23:24:47,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-20 23:24:47,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-20 23:24:47,360 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-20 23:24:47,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:24:47,361 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-20 23:24:47,361 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 23:24:47,361 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-20 23:24:47,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-20 23:24:47,362 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:24:47,362 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 23:24:47,363 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:24:47,363 INFO L82 PathProgramCache]: Analyzing trace with hash -2014823503, now seen corresponding path program 1 times [2018-01-20 23:24:47,363 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:24:47,364 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:47,364 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:47,365 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:47,365 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:24:47,374 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 23:24:47,374 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 23:24:47,374 INFO L164 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG 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 23:24:47,384 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:47,384 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-20 23:24:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:24:47,428 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-20 23:24:47,428 INFO L201 CegarAbsIntRunner]: [0], [1], [6], [7], [10], [14], [19], [21], [22], [23], [24], [32], [36], [39], [41], [42], [43], [45], [49], [53], [56], [67], [68], [69], [70], [71], [72], [74], [75], [76], [77] [2018-01-20 23:24:47,430 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-20 23:24:47,430 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-20 23:24:49,060 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-20 23:24:49,060 INFO L268 AbstractInterpreter]: Visited 31 different actions 47 times. Merged at 15 different actions 15 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 27 variables. [2018-01-20 23:24:49,064 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-20 23:24:49,064 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 23:24:49,064 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-20 23:24:49,074 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:49,074 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-20 23:24:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:24:49,095 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 23:24:49,165 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 23:24:49,165 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-20 23:24:49,295 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 23:24:49,317 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:24:49,317 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-01-20 23:24:49,317 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:24:49,318 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 23:24:49,318 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 23:24:49,318 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-20 23:24:49,319 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-20 23:24:49,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:24:49,400 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2018-01-20 23:24:49,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 23:24:49,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-20 23:24:49,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:24:49,401 INFO L225 Difference]: With dead ends: 95 [2018-01-20 23:24:49,401 INFO L226 Difference]: Without dead ends: 86 [2018-01-20 23:24:49,402 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-20 23:24:49,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-01-20 23:24:49,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 54. [2018-01-20 23:24:49,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-20 23:24:49,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-20 23:24:49,408 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-20 23:24:49,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:24:49,408 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-20 23:24:49,408 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 23:24:49,408 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-20 23:24:49,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-20 23:24:49,409 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:24:49,409 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 23:24:49,409 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:24:49,409 INFO L82 PathProgramCache]: Analyzing trace with hash -1818770383, now seen corresponding path program 1 times [2018-01-20 23:24:49,409 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:24:49,410 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:49,410 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:49,410 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:49,410 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:24:49,418 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 23:24:49,418 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 23:24:49,418 INFO L164 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG 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 23:24:49,429 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:49,429 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-20 23:24:49,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:24:49,469 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-20 23:24:49,469 INFO L201 CegarAbsIntRunner]: [0], [1], [6], [7], [12], [14], [17], [21], [22], [23], [24], [32], [36], [39], [41], [42], [43], [45], [49], [53], [56], [67], [68], [69], [70], [71], [72], [74], [75], [76], [77] [2018-01-20 23:24:49,471 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-20 23:24:49,471 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-20 23:24:50,550 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-20 23:24:50,550 INFO L268 AbstractInterpreter]: Visited 31 different actions 47 times. Merged at 15 different actions 15 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 27 variables. [2018-01-20 23:24:50,552 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-20 23:24:50,552 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 23:24:50,552 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-20 23:24:50,558 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:50,558 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-20 23:24:50,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:24:50,574 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 23:24:50,594 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 23:24:50,594 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-20 23:24:50,692 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 23:24:50,714 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:24:50,714 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-01-20 23:24:50,714 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:24:50,715 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 23:24:50,715 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 23:24:50,715 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-20 23:24:50,715 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-20 23:24:50,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:24:50,816 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2018-01-20 23:24:50,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 23:24:50,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-20 23:24:50,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:24:50,819 INFO L225 Difference]: With dead ends: 110 [2018-01-20 23:24:50,819 INFO L226 Difference]: Without dead ends: 101 [2018-01-20 23:24:50,820 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-20 23:24:50,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-01-20 23:24:50,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 54. [2018-01-20 23:24:50,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-20 23:24:50,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-20 23:24:50,828 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-20 23:24:50,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:24:50,828 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-20 23:24:50,828 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 23:24:50,828 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-20 23:24:50,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-20 23:24:50,829 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:24:50,830 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 23:24:50,830 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:24:50,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1952783889, now seen corresponding path program 1 times [2018-01-20 23:24:50,830 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:24:50,831 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:50,831 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:50,831 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:50,831 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:24:50,838 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 23:24:50,838 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 23:24:50,838 INFO L164 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG 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 23:24:50,850 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:50,850 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-20 23:24:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:24:50,895 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-20 23:24:50,895 INFO L201 CegarAbsIntRunner]: [0], [1], [6], [7], [12], [14], [19], [21], [22], [23], [24], [32], [36], [39], [41], [42], [43], [45], [49], [53], [56], [67], [68], [69], [70], [71], [72], [74], [75], [76], [77] [2018-01-20 23:24:50,896 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-20 23:24:50,897 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-20 23:24:52,117 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-20 23:24:52,117 INFO L268 AbstractInterpreter]: Visited 31 different actions 47 times. Merged at 15 different actions 15 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 27 variables. [2018-01-20 23:24:52,119 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-20 23:24:52,119 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 23:24:52,119 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-20 23:24:52,124 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:52,124 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-20 23:24:52,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:24:52,143 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 23:24:52,170 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 23:24:52,170 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-20 23:24:52,217 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 23:24:52,237 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:24:52,237 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-01-20 23:24:52,237 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:24:52,238 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-20 23:24:52,238 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-20 23:24:52,238 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-20 23:24:52,238 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-20 23:24:52,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:24:52,292 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2018-01-20 23:24:52,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-20 23:24:52,293 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-20 23:24:52,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:24:52,294 INFO L225 Difference]: With dead ends: 69 [2018-01-20 23:24:52,294 INFO L226 Difference]: Without dead ends: 60 [2018-01-20 23:24:52,295 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-20 23:24:52,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-20 23:24:52,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2018-01-20 23:24:52,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-20 23:24:52,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-01-20 23:24:52,301 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2018-01-20 23:24:52,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:24:52,301 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-01-20 23:24:52,301 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-20 23:24:52,301 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-01-20 23:24:52,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-20 23:24:52,302 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:24:52,302 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 23:24:52,302 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-20 23:24:52,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1166525403, now seen corresponding path program 1 times [2018-01-20 23:24:52,302 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:24:52,303 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:52,303 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:52,303 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:52,303 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:24:52,308 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 23:24:52,308 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 23:24:52,308 INFO L164 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG 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 23:24:52,315 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:52,315 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-20 23:24:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:24:52,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-20 23:24:52,386 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-20 23:24:52,396 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:24:52,403 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:24:52,404 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-20 23:24:52,421 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-20 23:24:52,421 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-20 23:24:52,421 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-20 23:24:52,421 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-20 23:24:52,421 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-20 23:24:52,421 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-20 23:24:52,422 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-20 23:24:52,422 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-20 23:24:52,422 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-20 23:24:52,423 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-20 23:24:52,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-20 23:24:52,424 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:24:52,424 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 23:24:52,424 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-20 23:24:52,424 INFO L82 PathProgramCache]: Analyzing trace with hash 2112136767, now seen corresponding path program 1 times [2018-01-20 23:24:52,425 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:24:52,426 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:52,426 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:52,426 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:52,426 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:24:52,432 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 23:24:52,432 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 23:24:52,433 INFO L164 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-20 23:24:52,447 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:52,447 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-20 23:24:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:24:52,491 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-20 23:24:52,492 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-20 23:24:52,492 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 23:24:52,492 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-20 23:24:52,507 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:52,508 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-20 23:24:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:24:52,523 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 23:24:52,551 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 23:24:52,551 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-20 23:24:52,556 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 23:24:52,577 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:24:52,578 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2018-01-20 23:24:52,578 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:24:52,578 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-20 23:24:52,578 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-20 23:24:52,578 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-20 23:24:52,578 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2018-01-20 23:24:52,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:24:52,672 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-20 23:24:52,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-20 23:24:52,672 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-20 23:24:52,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:24:52,673 INFO L225 Difference]: With dead ends: 60 [2018-01-20 23:24:52,674 INFO L226 Difference]: Without dead ends: 33 [2018-01-20 23:24:52,674 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-01-20 23:24:52,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-01-20 23:24:52,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-01-20 23:24:52,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-01-20 23:24:52,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-01-20 23:24:52,678 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 19 [2018-01-20 23:24:52,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:24:52,679 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-01-20 23:24:52,679 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-20 23:24:52,679 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-01-20 23:24:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-20 23:24:52,680 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:24:52,680 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 23:24:52,680 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-20 23:24:52,680 INFO L82 PathProgramCache]: Analyzing trace with hash 197950760, now seen corresponding path program 1 times [2018-01-20 23:24:52,681 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:24:52,682 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:52,682 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:52,682 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:52,682 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:24:52,687 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 23:24:52,688 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 23:24:52,688 INFO L164 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-20 23:24:52,705 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:52,706 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-20 23:24:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:24:52,732 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-20 23:24:52,733 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-20 23:24:52,733 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-20 23:24:52,733 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-20 23:24:52,739 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:52,739 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-20 23:24:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:24:52,761 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-20 23:24:52,791 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 23:24:52,791 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-20 23:24:52,801 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 23:24:52,830 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:24:52,830 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-01-20 23:24:52,830 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:24:52,830 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-20 23:24:52,830 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-20 23:24:52,830 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-20 23:24:52,831 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 4 states. [2018-01-20 23:24:52,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:24:52,856 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2018-01-20 23:24:52,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-20 23:24:52,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-01-20 23:24:52,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:24:52,857 INFO L225 Difference]: With dead ends: 52 [2018-01-20 23:24:52,857 INFO L226 Difference]: Without dead ends: 38 [2018-01-20 23:24:52,858 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-20 23:24:52,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-20 23:24:52,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2018-01-20 23:24:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-20 23:24:52,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-20 23:24:52,861 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 25 [2018-01-20 23:24:52,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:24:52,862 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-20 23:24:52,862 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-20 23:24:52,862 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-20 23:24:52,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 23:24:52,863 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:24:52,863 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 23:24:52,863 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-20 23:24:52,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1753910501, now seen corresponding path program 1 times [2018-01-20 23:24:52,863 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:24:52,864 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:52,864 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:52,864 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:24:52,864 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:24:52,870 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 23:24:52,870 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 23:24:52,870 INFO L164 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-20 23:24:52,875 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:24:52,876 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-20 23:24:52,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:24:52,907 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-20 23:24:52,908 INFO L201 CegarAbsIntRunner]: [0], [1], [7], [10], [14], [17], [21], [22], [23], [24], [32], [36], [39], [41], [42], [43], [45], [49], [53], [56], [67], [68], [69], [70], [71], [73], [74], [75], [76] [2018-01-20 23:24:52,909 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-20 23:24:52,909 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-20 23:24:53,593 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-20 23:24:53,593 INFO L268 AbstractInterpreter]: Visited 29 different actions 44 times. Merged at 14 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-01-20 23:24:53,595 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-20 23:24:54,624 INFO L232 lantSequenceWeakener]: Weakened 29 states. On average, predicates are now at 64.25% of their original sizes. [2018-01-20 23:24:54,624 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-20 23:24:55,040 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-20 23:24:55,041 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:24:55,041 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-01-20 23:24:55,042 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:24:55,042 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-20 23:24:55,042 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-20 23:24:55,042 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-01-20 23:24:55,043 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 17 states. [2018-01-20 23:25:02,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:25:02,357 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2018-01-20 23:25:02,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-20 23:25:02,357 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2018-01-20 23:25:02,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:25:02,357 INFO L225 Difference]: With dead ends: 63 [2018-01-20 23:25:02,358 INFO L226 Difference]: Without dead ends: 56 [2018-01-20 23:25:02,358 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-01-20 23:25:02,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-01-20 23:25:02,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2018-01-20 23:25:02,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-20 23:25:02,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-20 23:25:02,366 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-20 23:25:02,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:25:02,366 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-20 23:25:02,366 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-20 23:25:02,367 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-20 23:25:02,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 23:25:02,367 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:02,367 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 23:25:02,368 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation]=== [2018-01-20 23:25:02,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1535055783, now seen corresponding path program 1 times [2018-01-20 23:25:02,368 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:02,369 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:02,369 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:02,369 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:02,369 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:02,375 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 23:25:02,375 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 23:25:02,375 INFO L164 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-20 23:25:02,382 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:02,382 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-20 23:25:02,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:25:02,419 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-20 23:25:02,419 INFO L201 CegarAbsIntRunner]: [0], [1], [7], [10], [14], [19], [21], [22], [23], [24], [32], [36], [39], [41], [42], [43], [45], [49], [53], [56], [67], [68], [69], [70], [71], [73], [74], [75], [76] [2018-01-20 23:25:02,420 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-20 23:25:02,421 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-20 23:25:03,080 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-20 23:25:03,080 INFO L268 AbstractInterpreter]: Visited 29 different actions 44 times. Merged at 14 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-01-20 23:25:03,085 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-20 23:25:04,246 INFO L232 lantSequenceWeakener]: Weakened 29 states. On average, predicates are now at 64.25% of their original sizes. [2018-01-20 23:25:04,246 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-20 23:25:04,600 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-20 23:25:04,601 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:25:04,601 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-01-20 23:25:04,601 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:25:04,601 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-20 23:25:04,602 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-20 23:25:04,602 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-01-20 23:25:04,602 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 17 states. [2018-01-20 23:25:12,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:25:12,209 INFO L93 Difference]: Finished difference Result 77 states and 83 transitions. [2018-01-20 23:25:12,209 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-20 23:25:12,209 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2018-01-20 23:25:12,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:25:12,210 INFO L225 Difference]: With dead ends: 77 [2018-01-20 23:25:12,210 INFO L226 Difference]: Without dead ends: 70 [2018-01-20 23:25:12,210 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-01-20 23:25:12,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-01-20 23:25:12,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2018-01-20 23:25:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-20 23:25:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-20 23:25:12,218 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-20 23:25:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:25:12,219 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-20 23:25:12,219 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-20 23:25:12,219 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-20 23:25:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 23:25:12,220 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:12,220 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 23:25:12,220 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation]=== [2018-01-20 23:25:12,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1887924007, now seen corresponding path program 1 times [2018-01-20 23:25:12,221 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:12,221 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:12,222 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:12,222 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:12,222 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:12,227 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 23:25:12,227 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 23:25:12,227 INFO L164 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-20 23:25:12,238 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:12,238 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-20 23:25:12,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:25:12,263 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-20 23:25:12,263 INFO L201 CegarAbsIntRunner]: [0], [1], [7], [12], [14], [17], [21], [22], [23], [24], [32], [36], [39], [41], [42], [43], [45], [49], [53], [56], [67], [68], [69], [70], [71], [73], [74], [75], [76] [2018-01-20 23:25:12,264 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-20 23:25:12,264 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-20 23:25:13,108 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-20 23:25:13,108 INFO L268 AbstractInterpreter]: Visited 29 different actions 44 times. Merged at 14 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-01-20 23:25:13,118 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-20 23:25:14,181 INFO L232 lantSequenceWeakener]: Weakened 29 states. On average, predicates are now at 64.25% of their original sizes. [2018-01-20 23:25:14,181 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-20 23:25:14,494 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-20 23:25:14,494 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:25:14,494 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-01-20 23:25:14,494 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:25:14,495 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-20 23:25:14,495 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-20 23:25:14,495 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-01-20 23:25:14,495 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 17 states. [2018-01-20 23:25:22,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-20 23:25:22,097 INFO L93 Difference]: Finished difference Result 92 states and 99 transitions. [2018-01-20 23:25:22,097 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-01-20 23:25:22,097 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2018-01-20 23:25:22,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-20 23:25:22,098 INFO L225 Difference]: With dead ends: 92 [2018-01-20 23:25:22,098 INFO L226 Difference]: Without dead ends: 85 [2018-01-20 23:25:22,098 INFO L525 BasicCegarLoop]: 2 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-01-20 23:25:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-01-20 23:25:22,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 52. [2018-01-20 23:25:22,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-20 23:25:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-20 23:25:22,109 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-20 23:25:22,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-20 23:25:22,109 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-20 23:25:22,109 INFO L433 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-01-20 23:25:22,109 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-20 23:25:22,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-20 23:25:22,110 INFO L314 BasicCegarLoop]: Found error trace [2018-01-20 23:25:22,110 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 23:25:22,110 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation]=== [2018-01-20 23:25:22,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1669069289, now seen corresponding path program 1 times [2018-01-20 23:25:22,111 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-20 23:25:22,111 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:22,112 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:22,112 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-20 23:25:22,112 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-20 23:25:22,117 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-20 23:25:22,117 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-20 23:25:22,117 INFO L164 anRefinementStrategy]: Switched to traceCheck mode Z3_NO_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-20 23:25:22,131 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-20 23:25:22,131 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-20 23:25:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-20 23:25:22,157 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-20 23:25:22,157 INFO L201 CegarAbsIntRunner]: [0], [1], [7], [12], [14], [19], [21], [22], [23], [24], [32], [36], [39], [41], [42], [43], [45], [49], [53], [56], [67], [68], [69], [70], [71], [73], [74], [75], [76] [2018-01-20 23:25:22,158 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-20 23:25:22,158 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-20 23:25:22,806 INFO L262 AbstractInterpreter]: Error location(s) were unreachable [2018-01-20 23:25:22,806 INFO L268 AbstractInterpreter]: Visited 29 different actions 44 times. Merged at 14 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-01-20 23:25:22,810 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-01-20 23:25:23,895 INFO L232 lantSequenceWeakener]: Weakened 29 states. On average, predicates are now at 64.25% of their original sizes. [2018-01-20 23:25:23,895 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-01-20 23:25:24,368 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-01-20 23:25:24,369 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-01-20 23:25:24,369 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2018-01-20 23:25:24,369 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-20 23:25:24,369 INFO L409 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-01-20 23:25:24,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-01-20 23:25:24,370 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2018-01-20 23:25:24,370 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 17 states. Received shutdown request... [2018-01-20 23:25:43,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-01-20 23:25:43,263 WARN L491 AbstractCegarLoop]: Verification canceled [2018-01-20 23:25:43,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.01 11:25:43 BoogieIcfgContainer [2018-01-20 23:25:43,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-20 23:25:43,266 INFO L168 Benchmark]: Toolchain (without parser) took 60071.73 ms. Allocated memory was 301.5 MB in the beginning and 1.3 GB in the end (delta: 950.5 MB). Free memory was 260.4 MB in the beginning and 513.5 MB in the end (delta: -253.2 MB). Peak memory consumption was 697.4 MB. Max. memory is 5.3 GB. [2018-01-20 23:25:43,267 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 301.5 MB. Free memory is still 266.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-20 23:25:43,267 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.80 ms. Allocated memory is still 301.5 MB. Free memory was 260.4 MB in the beginning and 250.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-20 23:25:43,267 INFO L168 Benchmark]: Boogie Preprocessor took 38.37 ms. Allocated memory is still 301.5 MB. Free memory was 250.4 MB in the beginning and 248.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-20 23:25:43,268 INFO L168 Benchmark]: RCFGBuilder took 246.14 ms. Allocated memory is still 301.5 MB. Free memory was 248.4 MB in the beginning and 231.5 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. [2018-01-20 23:25:43,268 INFO L168 Benchmark]: TraceAbstraction took 59545.77 ms. Allocated memory was 301.5 MB in the beginning and 1.3 GB in the end (delta: 950.5 MB). Free memory was 231.5 MB in the beginning and 513.5 MB in the end (delta: -282.1 MB). Peak memory consumption was 668.5 MB. Max. memory is 5.3 GB. [2018-01-20 23:25:43,269 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 301.5 MB. Free memory is still 266.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 206.80 ms. Allocated memory is still 301.5 MB. Free memory was 260.4 MB in the beginning and 250.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 38.37 ms. Allocated memory is still 301.5 MB. Free memory was 250.4 MB in the beginning and 248.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 246.14 ms. Allocated memory is still 301.5 MB. Free memory was 248.4 MB in the beginning and 231.5 MB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 5.3 GB. * TraceAbstraction took 59545.77 ms. Allocated memory was 301.5 MB in the beginning and 1.3 GB in the end (delta: 950.5 MB). Free memory was 231.5 MB in the beginning and 513.5 MB in the end (delta: -282.1 MB). Peak memory consumption was 668.5 MB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 30 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 403 LocStat_NO_SUPPORTING_DISEQUALITIES : 70 LocStat_NO_DISJUNCTIONS : -60 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 35 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 46 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 38 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 5.558143 RENAME_VARIABLES(MILLISECONDS) : 0.022975 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 5.288064 PROJECTAWAY(MILLISECONDS) : 47.296861 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.168063 DISJOIN(MILLISECONDS) : 2.807632 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.046194 ADD_EQUALITY(MILLISECONDS) : 0.033570 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.020122 #CONJOIN_DISJUNCTIVE : 77 #RENAME_VARIABLES : 141 #UNFREEZE : 0 #CONJOIN : 121 #PROJECTAWAY : 116 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 13 #RENAME_VARIABLES_DISJUNCTIVE : 138 #ADD_EQUALITY : 44 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 30 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 423 LocStat_NO_SUPPORTING_DISEQUALITIES : 70 LocStat_NO_DISJUNCTIONS : -60 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 35 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 47 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 38 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 4.749364 RENAME_VARIABLES(MILLISECONDS) : 0.019437 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 4.499724 PROJECTAWAY(MILLISECONDS) : 28.191307 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.115501 DISJOIN(MILLISECONDS) : 2.798870 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.040806 ADD_EQUALITY(MILLISECONDS) : 0.044368 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.044378 #CONJOIN_DISJUNCTIVE : 77 #RENAME_VARIABLES : 141 #UNFREEZE : 0 #CONJOIN : 121 #PROJECTAWAY : 116 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 13 #RENAME_VARIABLES_DISJUNCTIVE : 138 #ADD_EQUALITY : 45 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 30 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 425 LocStat_NO_SUPPORTING_DISEQUALITIES : 70 LocStat_NO_DISJUNCTIONS : -60 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 35 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 47 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 38 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 3.345266 RENAME_VARIABLES(MILLISECONDS) : 0.011218 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 3.164672 PROJECTAWAY(MILLISECONDS) : 19.202992 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.077720 DISJOIN(MILLISECONDS) : 1.656271 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.022443 ADD_EQUALITY(MILLISECONDS) : 0.024934 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.014958 #CONJOIN_DISJUNCTIVE : 77 #RENAME_VARIABLES : 141 #UNFREEZE : 0 #CONJOIN : 121 #PROJECTAWAY : 116 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 13 #RENAME_VARIABLES_DISJUNCTIVE : 138 #ADD_EQUALITY : 45 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 30 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 445 LocStat_NO_SUPPORTING_DISEQUALITIES : 70 LocStat_NO_DISJUNCTIONS : -60 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 35 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 48 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 38 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 2.811017 RENAME_VARIABLES(MILLISECONDS) : 0.016931 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 2.618592 PROJECTAWAY(MILLISECONDS) : 16.074497 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.064283 DISJOIN(MILLISECONDS) : 1.709452 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.033890 ADD_EQUALITY(MILLISECONDS) : 0.022579 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.009714 #CONJOIN_DISJUNCTIVE : 77 #RENAME_VARIABLES : 141 #UNFREEZE : 0 #CONJOIN : 121 #PROJECTAWAY : 116 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 13 #RENAME_VARIABLES_DISJUNCTIVE : 138 #ADD_EQUALITY : 46 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 27 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 364 LocStat_NO_SUPPORTING_DISEQUALITIES : 66 LocStat_NO_DISJUNCTIONS : -54 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 33 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 44 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 36 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.391358 RENAME_VARIABLES(MILLISECONDS) : 1.272536 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.360429 PROJECTAWAY(MILLISECONDS) : 5.739656 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.058186 DISJOIN(MILLISECONDS) : 1.496820 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 1.293949 ADD_EQUALITY(MILLISECONDS) : 0.124726 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.058156 #CONJOIN_DISJUNCTIVE : 73 #RENAME_VARIABLES : 124 #UNFREEZE : 0 #CONJOIN : 105 #PROJECTAWAY : 93 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 12 #RENAME_VARIABLES_DISJUNCTIVE : 121 #ADD_EQUALITY : 42 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 27 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 383 LocStat_NO_SUPPORTING_DISEQUALITIES : 66 LocStat_NO_DISJUNCTIONS : -54 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 33 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 45 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 36 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.404568 RENAME_VARIABLES(MILLISECONDS) : 1.265141 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.384904 PROJECTAWAY(MILLISECONDS) : 5.547554 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.072846 DISJOIN(MILLISECONDS) : 1.537007 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 1.289488 ADD_EQUALITY(MILLISECONDS) : 0.035904 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.009298 #CONJOIN_DISJUNCTIVE : 73 #RENAME_VARIABLES : 124 #UNFREEZE : 0 #CONJOIN : 105 #PROJECTAWAY : 93 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 12 #RENAME_VARIABLES_DISJUNCTIVE : 121 #ADD_EQUALITY : 43 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 27 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 399 LocStat_NO_SUPPORTING_DISEQUALITIES : 66 LocStat_NO_DISJUNCTIONS : -54 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 33 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 45 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 36 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.301475 RENAME_VARIABLES(MILLISECONDS) : 1.236489 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.279218 PROJECTAWAY(MILLISECONDS) : 5.245165 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.058792 DISJOIN(MILLISECONDS) : 1.595086 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 1.265324 ADD_EQUALITY(MILLISECONDS) : 0.025298 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.011301 #CONJOIN_DISJUNCTIVE : 73 #RENAME_VARIABLES : 124 #UNFREEZE : 0 #CONJOIN : 105 #PROJECTAWAY : 93 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 12 #RENAME_VARIABLES_DISJUNCTIVE : 121 #ADD_EQUALITY : 43 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 27 LocStat_MAX_WEQGRAPH_SIZE : 3 LocStat_MAX_SIZEOF_WEQEDGELABEL : 2 LocStat_NO_SUPPORTING_EQUALITIES : 404 LocStat_NO_SUPPORTING_DISEQUALITIES : 66 LocStat_NO_DISJUNCTIONS : -54 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 33 TransStat_MAX_WEQGRAPH_SIZE : 2 TransStat_MAX_SIZEOF_WEQEDGELABEL : 1 TransStat_NO_SUPPORTING_EQUALITIES : 46 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 36 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.350934 RENAME_VARIABLES(MILLISECONDS) : 1.321877 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.334176 PROJECTAWAY(MILLISECONDS) : 5.867549 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.074379 DISJOIN(MILLISECONDS) : 1.614124 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 1.339766 ADD_EQUALITY(MILLISECONDS) : 0.031085 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.010446 #CONJOIN_DISJUNCTIVE : 73 #RENAME_VARIABLES : 124 #UNFREEZE : 0 #CONJOIN : 105 #PROJECTAWAY : 93 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 12 #RENAME_VARIABLES_DISJUNCTIVE : 121 #ADD_EQUALITY : 44 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 * 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*sizeof(int)) VAL [__builtin_alloca (length*sizeof(int))={7:0}, fac=1, length=1] [L546] int *arr = __builtin_alloca (length*sizeof(int)); VAL [__builtin_alloca (length*sizeof(int))={7:0}, arr={7:0}, fac=1, length=1] [L547] EXPR, FCALL __builtin_alloca (fac*length*sizeof(int)) VAL [__builtin_alloca (fac*length*sizeof(int))={9:0}, __builtin_alloca (length*sizeof(int))={7:0}, arr={7:0}, fac=1, length=1] [L547] int *arr2 = __builtin_alloca (fac*length*sizeof(int)); VAL [__builtin_alloca (fac*length*sizeof(int))={9:0}, __builtin_alloca (length*sizeof(int))={7:0}, arr={7:0}, arr2={9:0}, fac=1, length=1] [L548] COND FALSE !(!arr || !arr2) [L549] i=0 VAL [__builtin_alloca (fac*length*sizeof(int))={9:0}, __builtin_alloca (length*sizeof(int))={7:0}, arr={7:0}, arr2={9:0}, fac=1, i=0, length=1] [L549] COND TRUE i