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_imprecise.epf -i ../../../trunk/examples/svcomp/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2f49842 [2018-01-21 00:30:10,812 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-01-21 00:30:10,813 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-01-21 00:30:10,829 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-01-21 00:30:10,829 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-01-21 00:30:10,830 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-01-21 00:30:10,832 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-01-21 00:30:10,833 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-01-21 00:30:10,835 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-01-21 00:30:10,836 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-01-21 00:30:10,837 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-01-21 00:30:10,838 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-01-21 00:30:10,839 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-01-21 00:30:10,840 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-01-21 00:30:10,841 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-01-21 00:30:10,844 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-01-21 00:30:10,846 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-01-21 00:30:10,848 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-01-21 00:30:10,849 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-01-21 00:30:10,851 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-01-21 00:30:10,853 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-01-21 00:30:10,858 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-01-21 00:30:10,859 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-01-21 00:30:10,859 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_imprecise.epf [2018-01-21 00:30:10,868 INFO L110 SettingsManager]: Loading preferences was successful [2018-01-21 00:30:10,869 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-01-21 00:30:10,870 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-01-21 00:30:10,870 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-01-21 00:30:10,870 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-01-21 00:30:10,870 INFO L133 SettingsManager]: * Deactivate Weak Equivalences=true [2018-01-21 00:30:10,870 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-01-21 00:30:10,870 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-01-21 00:30:10,871 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-01-21 00:30:10,871 INFO L133 SettingsManager]: * sizeof long=4 [2018-01-21 00:30:10,871 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-01-21 00:30:10,871 INFO L133 SettingsManager]: * Check allocation purity=true [2018-01-21 00:30:10,871 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-01-21 00:30:10,871 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-01-21 00:30:10,872 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-01-21 00:30:10,872 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-01-21 00:30:10,872 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-01-21 00:30:10,872 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-01-21 00:30:10,872 INFO L133 SettingsManager]: * sizeof long double=12 [2018-01-21 00:30:10,872 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-01-21 00:30:10,872 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-01-21 00:30:10,872 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-01-21 00:30:10,873 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-01-21 00:30:10,873 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-01-21 00:30:10,873 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-01-21 00:30:10,873 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-01-21 00:30:10,873 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-01-21 00:30:10,874 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-01-21 00:30:10,874 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-01-21 00:30:10,874 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-01-21 00:30:10,874 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-01-21 00:30:10,874 INFO L133 SettingsManager]: * Stop after first violation was found=false [2018-01-21 00:30:10,874 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-01-21 00:30:10,874 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-01-21 00:30:10,874 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-01-21 00:30:10,875 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-01-21 00:30:10,875 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-01-21 00:30:10,875 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-01-21 00:30:10,876 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-01-21 00:30:10,909 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-01-21 00:30:10,920 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully initialized [2018-01-21 00:30:10,923 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-01-21 00:30:10,924 INFO L271 PluginConnector]: Initializing CDTParser... [2018-01-21 00:30:10,924 INFO L276 PluginConnector]: CDTParser initialized [2018-01-21 00:30:10,925 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/mult_array-alloca_true-valid-memsafety_true-termination.i [2018-01-21 00:30:11,086 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-01-21 00:30:11,091 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-01-21 00:30:11,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-01-21 00:30:11,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-01-21 00:30:11,097 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-01-21 00:30:11,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:30:11" (1/1) ... [2018-01-21 00:30:11,101 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b2fa6e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:11, skipping insertion in model container [2018-01-21 00:30:11,101 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.01 12:30:11" (1/1) ... [2018-01-21 00:30:11,115 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:30:11,153 INFO L153 Dispatcher]: Using SV-COMP mode [2018-01-21 00:30:11,279 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:30:11,297 INFO L450 PostProcessor]: Settings: Checked method=main [2018-01-21 00:30:11,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:11 WrapperNode [2018-01-21 00:30:11,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-01-21 00:30:11,306 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-01-21 00:30:11,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-01-21 00:30:11,306 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-01-21 00:30:11,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:11" (1/1) ... [2018-01-21 00:30:11,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:11" (1/1) ... [2018-01-21 00:30:11,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:11" (1/1) ... [2018-01-21 00:30:11,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:11" (1/1) ... [2018-01-21 00:30:11,336 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:11" (1/1) ... [2018-01-21 00:30:11,341 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:11" (1/1) ... [2018-01-21 00:30:11,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:11" (1/1) ... [2018-01-21 00:30:11,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-01-21 00:30:11,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-01-21 00:30:11,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-01-21 00:30:11,345 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-01-21 00:30:11,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:11" (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 [2018-01-21 00:30:11,400 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-01-21 00:30:11,400 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-01-21 00:30:11,401 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-01-21 00:30:11,401 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-01-21 00:30:11,401 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-01-21 00:30:11,401 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.free [2018-01-21 00:30:11,401 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-01-21 00:30:11,401 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-01-21 00:30:11,401 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-01-21 00:30:11,402 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-01-21 00:30:11,402 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-01-21 00:30:11,402 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-01-21 00:30:11,606 INFO L257 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-01-21 00:30:11,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:30:11 BoogieIcfgContainer [2018-01-21 00:30:11,607 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-01-21 00:30:11,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-01-21 00:30:11,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-01-21 00:30:11,609 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-01-21 00:30:11,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.01 12:30:11" (1/3) ... [2018-01-21 00:30:11,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c60ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:30:11, skipping insertion in model container [2018-01-21 00:30:11,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.01 12:30:11" (2/3) ... [2018-01-21 00:30:11,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c60ed9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.01 12:30:11, skipping insertion in model container [2018-01-21 00:30:11,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.01 12:30:11" (3/3) ... [2018-01-21 00:30:11,613 INFO L105 eAbstractionObserver]: Analyzing ICFG mult_array-alloca_true-valid-memsafety_true-termination.i [2018-01-21 00:30:11,619 INFO L130 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-01-21 00:30:11,625 INFO L142 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-01-21 00:30:11,663 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:30:11,663 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:30:11,663 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:30:11,663 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:30:11,664 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:30:11,664 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:30:11,664 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:30:11,664 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.initErr0EnsuresViolation======== [2018-01-21 00:30:11,665 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:30:11,683 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-21 00:30:11,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2018-01-21 00:30:11,688 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:11,689 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1] [2018-01-21 00:30:11,690 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.initErr0EnsuresViolation]=== [2018-01-21 00:30:11,694 INFO L82 PathProgramCache]: Analyzing trace with hash 100907, now seen corresponding path program 1 times [2018-01-21 00:30:11,696 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:11,738 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:11,739 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:11,739 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:11,739 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:30:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:30:11,796 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:30:11,802 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:30:11,809 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:30:11,809 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:30:11,809 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:30:11,810 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:30:11,810 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:30:11,810 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:30:11,810 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:30:11,810 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.startErr0EnsuresViolation======== [2018-01-21 00:30:11,810 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:30:11,812 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-21 00:30:11,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-01-21 00:30:11,814 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:11,814 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] [2018-01-21 00:30:11,814 INFO L371 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:30:11,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1756096489, now seen corresponding path program 1 times [2018-01-21 00:30:11,814 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:11,815 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:11,816 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:11,816 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:11,816 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:11,835 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:30:11,836 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:30:11,836 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 [2018-01-21 00:30:11,844 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:11,844 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:30:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:11,901 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-21 00:30:11,903 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 00:30:11,904 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:30:11,904 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 [2018-01-21 00:30:11,913 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:11,913 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:30:11,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:11,954 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:30:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:30:12,056 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:30:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:30:12,134 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:12,134 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2018-01-21 00:30:12,134 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:12,137 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 00:30:12,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 00:30:12,214 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-21 00:30:12,216 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2018-01-21 00:30:12,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:12,419 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-21 00:30:12,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 00:30:12,421 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2018-01-21 00:30:12,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:12,431 INFO L225 Difference]: With dead ends: 60 [2018-01-21 00:30:12,431 INFO L226 Difference]: Without dead ends: 35 [2018-01-21 00:30:12,434 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2018-01-21 00:30:12,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-01-21 00:30:12,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2018-01-21 00:30:12,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-21 00:30:12,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-21 00:30:12,465 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 21 [2018-01-21 00:30:12,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:12,466 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-21 00:30:12,466 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 00:30:12,466 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-21 00:30:12,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-01-21 00:30:12,467 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:12,467 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] [2018-01-21 00:30:12,467 INFO L371 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:30:12,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1252120768, now seen corresponding path program 1 times [2018-01-21 00:30:12,468 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:12,469 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:12,469 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:12,469 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:12,469 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:12,479 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:30:12,479 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:30:12,479 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 [2018-01-21 00:30:12,497 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:12,498 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:30:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:12,536 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-21 00:30:12,537 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 00:30:12,537 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:30:12,537 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 [2018-01-21 00:30:12,542 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:12,542 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:30:12,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:12,560 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:30:12,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:30:12,575 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:30:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:30:12,620 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:12,620 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-01-21 00:30:12,621 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:12,621 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 00:30:12,622 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 00:30:12,622 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-21 00:30:12,622 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 4 states. [2018-01-21 00:30:12,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:12,695 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2018-01-21 00:30:12,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 00:30:12,696 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-01-21 00:30:12,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:12,697 INFO L225 Difference]: With dead ends: 56 [2018-01-21 00:30:12,697 INFO L226 Difference]: Without dead ends: 40 [2018-01-21 00:30:12,698 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 [2018-01-21 00:30:12,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-01-21 00:30:12,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2018-01-21 00:30:12,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-01-21 00:30:12,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-01-21 00:30:12,705 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 27 [2018-01-21 00:30:12,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:12,705 INFO L432 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-01-21 00:30:12,706 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 00:30:12,706 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-01-21 00:30:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 00:30:12,707 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:12,707 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] [2018-01-21 00:30:12,707 INFO L371 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:30:12,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1880809997, now seen corresponding path program 1 times [2018-01-21 00:30:12,708 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:12,708 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:12,709 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:12,709 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:12,709 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:12,718 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:30:12,718 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:30:12,718 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) [2018-01-21 00:30:12,733 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:12,734 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-21 00:30:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:12,782 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-21 00:30:12,784 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] [2018-01-21 00:30:12,836 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:30:12,837 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 00:30:13,054 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 00:30:13,056 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. [2018-01-21 00:30:13,068 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 00:30:13,068 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:30:13,068 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 [2018-01-21 00:30:13,073 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:13,073 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:30:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:13,091 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:30:13,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:30:13,126 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:30:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:30:13,219 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:13,219 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-01-21 00:30:13,220 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:13,220 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:30:13,220 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:30:13,220 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:30:13,220 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 5 states. [2018-01-21 00:30:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:13,287 INFO L93 Difference]: Finished difference Result 102 states and 110 transitions. [2018-01-21 00:30:13,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 00:30:13,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-21 00:30:13,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:13,291 INFO L225 Difference]: With dead ends: 102 [2018-01-21 00:30:13,292 INFO L226 Difference]: Without dead ends: 93 [2018-01-21 00:30:13,292 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:30:13,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-01-21 00:30:13,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2018-01-21 00:30:13,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-21 00:30:13,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-21 00:30:13,299 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-21 00:30:13,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:13,299 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-21 00:30:13,299 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:30:13,299 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-21 00:30:13,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 00:30:13,300 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:13,300 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] [2018-01-21 00:30:13,300 INFO L371 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:30:13,301 INFO L82 PathProgramCache]: Analyzing trace with hash -2014823503, now seen corresponding path program 1 times [2018-01-21 00:30:13,301 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:13,301 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:13,301 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:13,302 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:13,302 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:13,309 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:30:13,309 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:30:13,309 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 [2018-01-21 00:30:13,315 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:13,315 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:30:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:13,368 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-21 00:30:13,369 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] [2018-01-21 00:30:13,371 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:30:13,371 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 00:30:13,508 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 00:30:13,508 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. [2018-01-21 00:30:13,512 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 00:30:13,513 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:30:13,513 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 [2018-01-21 00:30:13,524 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:13,525 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:30:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:13,547 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:30:13,572 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:30:13,573 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:30:13,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:30:13,678 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:13,679 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-01-21 00:30:13,679 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:13,679 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:30:13,680 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:30:13,680 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:30:13,680 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-21 00:30:13,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:13,753 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2018-01-21 00:30:13,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 00:30:13,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-21 00:30:13,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:13,755 INFO L225 Difference]: With dead ends: 95 [2018-01-21 00:30:13,755 INFO L226 Difference]: Without dead ends: 86 [2018-01-21 00:30:13,756 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:30:13,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-01-21 00:30:13,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 54. [2018-01-21 00:30:13,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-21 00:30:13,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-21 00:30:13,762 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-21 00:30:13,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:13,762 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-21 00:30:13,762 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:30:13,762 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-21 00:30:13,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 00:30:13,763 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:13,764 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] [2018-01-21 00:30:13,764 INFO L371 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:30:13,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1818770383, now seen corresponding path program 1 times [2018-01-21 00:30:13,764 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:13,765 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:13,765 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:13,765 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:13,765 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:13,772 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:30:13,772 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:30:13,772 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 [2018-01-21 00:30:13,787 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:13,787 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:30:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:13,824 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-21 00:30:13,824 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] [2018-01-21 00:30:13,826 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:30:13,826 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 00:30:13,931 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 00:30:13,931 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. [2018-01-21 00:30:13,933 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 00:30:13,934 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:30:13,934 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 [2018-01-21 00:30:13,946 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:13,946 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:30:13,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:13,967 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:30:14,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:30:14,017 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:30:14,066 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:30:14,087 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:14,087 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-01-21 00:30:14,087 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:14,087 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:30:14,088 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:30:14,088 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 00:30:14,088 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-21 00:30:14,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:14,180 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2018-01-21 00:30:14,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 00:30:14,180 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-21 00:30:14,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:14,182 INFO L225 Difference]: With dead ends: 110 [2018-01-21 00:30:14,182 INFO L226 Difference]: Without dead ends: 101 [2018-01-21 00:30:14,182 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 [2018-01-21 00:30:14,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-01-21 00:30:14,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 54. [2018-01-21 00:30:14,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-01-21 00:30:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2018-01-21 00:30:14,188 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2018-01-21 00:30:14,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:14,189 INFO L432 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2018-01-21 00:30:14,189 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:30:14,189 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2018-01-21 00:30:14,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-01-21 00:30:14,190 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:14,191 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] [2018-01-21 00:30:14,191 INFO L371 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:30:14,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1952783889, now seen corresponding path program 1 times [2018-01-21 00:30:14,191 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:14,192 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:14,192 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:14,192 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:14,192 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:14,199 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:30:14,199 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:30:14,199 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 [2018-01-21 00:30:14,212 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:14,212 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:30:14,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:14,241 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 33 with the following transitions: [2018-01-21 00:30:14,241 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] [2018-01-21 00:30:14,242 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:30:14,242 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 00:30:14,331 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 00:30:14,331 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. [2018-01-21 00:30:14,336 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 00:30:14,336 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:30:14,336 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 [2018-01-21 00:30:14,341 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:14,342 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:30:14,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:14,363 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:30:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:30:14,416 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:30:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:30:14,488 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:14,489 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-01-21 00:30:14,489 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:14,489 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:30:14,489 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:30:14,489 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 00:30:14,489 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 5 states. [2018-01-21 00:30:14,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:14,600 INFO L93 Difference]: Finished difference Result 69 states and 74 transitions. [2018-01-21 00:30:14,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 00:30:14,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-01-21 00:30:14,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:14,602 INFO L225 Difference]: With dead ends: 69 [2018-01-21 00:30:14,602 INFO L226 Difference]: Without dead ends: 60 [2018-01-21 00:30:14,602 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 [2018-01-21 00:30:14,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-01-21 00:30:14,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 39. [2018-01-21 00:30:14,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-01-21 00:30:14,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2018-01-21 00:30:14,609 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2018-01-21 00:30:14,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:14,609 INFO L432 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2018-01-21 00:30:14,609 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:30:14,609 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2018-01-21 00:30:14,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-01-21 00:30:14,616 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:14,617 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] [2018-01-21 00:30:14,617 INFO L371 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0EnsuresViolation]=== [2018-01-21 00:30:14,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1166525403, now seen corresponding path program 1 times [2018-01-21 00:30:14,618 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:14,619 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:14,619 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:14,620 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:14,620 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:14,626 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:30:14,627 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:30:14,627 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 [2018-01-21 00:30:14,643 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:14,643 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:30:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:30:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-01-21 00:30:14,722 INFO L381 BasicCegarLoop]: Counterexample might be feasible [2018-01-21 00:30:14,740 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:30:14,747 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:30:14,748 WARN L343 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2018-01-21 00:30:14,762 INFO L322 AbstractCegarLoop]: Interprodecural is true [2018-01-21 00:30:14,763 INFO L323 AbstractCegarLoop]: Hoare is true [2018-01-21 00:30:14,763 INFO L324 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-01-21 00:30:14,763 INFO L325 AbstractCegarLoop]: Backedges is TWOTRACK [2018-01-21 00:30:14,763 INFO L326 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-01-21 00:30:14,763 INFO L327 AbstractCegarLoop]: Difference is false [2018-01-21 00:30:14,763 INFO L328 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-01-21 00:30:14,763 INFO L333 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == mainErr0EnsuresViolation======== [2018-01-21 00:30:14,763 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-01-21 00:30:14,764 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-01-21 00:30:14,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-01-21 00:30:14,765 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:14,766 INFO L322 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-01-21 00:30:14,766 INFO L371 AbstractCegarLoop]: === Iteration 1 === [mainErr0EnsuresViolation]=== [2018-01-21 00:30:14,766 INFO L82 PathProgramCache]: Analyzing trace with hash 2112136767, now seen corresponding path program 1 times [2018-01-21 00:30:14,766 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:14,767 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:14,767 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:14,767 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:14,767 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:14,773 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:30:14,773 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:30:14,774 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 [2018-01-21 00:30:14,792 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:14,792 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:30:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:14,819 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-21 00:30:14,819 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 00:30:14,819 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:30:14,819 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 [2018-01-21 00:30:14,825 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:14,826 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:30:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:14,839 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:30:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:30:14,857 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:30:14,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:30:14,881 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:14,881 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2018-01-21 00:30:14,881 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:14,881 INFO L409 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-01-21 00:30:14,881 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-01-21 00:30:14,882 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-01-21 00:30:14,882 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2018-01-21 00:30:14,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:14,930 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2018-01-21 00:30:14,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-01-21 00:30:14,930 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2018-01-21 00:30:14,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:14,931 INFO L225 Difference]: With dead ends: 60 [2018-01-21 00:30:14,931 INFO L226 Difference]: Without dead ends: 33 [2018-01-21 00:30:14,932 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 [2018-01-21 00:30:14,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-01-21 00:30:14,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-01-21 00:30:14,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-01-21 00:30:14,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2018-01-21 00:30:14,935 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 19 [2018-01-21 00:30:14,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:14,936 INFO L432 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2018-01-21 00:30:14,936 INFO L433 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-01-21 00:30:14,936 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2018-01-21 00:30:14,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-01-21 00:30:14,937 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:14,937 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] [2018-01-21 00:30:14,937 INFO L371 AbstractCegarLoop]: === Iteration 2 === [mainErr0EnsuresViolation]=== [2018-01-21 00:30:14,937 INFO L82 PathProgramCache]: Analyzing trace with hash 197950760, now seen corresponding path program 1 times [2018-01-21 00:30:14,937 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:14,938 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:14,938 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:14,938 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:14,938 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:14,944 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:30:14,944 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:30:14,944 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 [2018-01-21 00:30:14,957 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:14,957 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:30:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:14,997 INFO L189 CegarAbsIntRunner]: Skipping current iteration for AI because the path program does not contain any loops [2018-01-21 00:30:14,997 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-01-21 00:30:14,997 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:30:14,997 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 [2018-01-21 00:30:15,003 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:15,003 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:30:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:15,020 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:30:15,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:30:15,046 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:30:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-01-21 00:30:15,093 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:15,094 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2018-01-21 00:30:15,094 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:15,094 INFO L409 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-01-21 00:30:15,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-01-21 00:30:15,095 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-01-21 00:30:15,095 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 4 states. [2018-01-21 00:30:15,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:15,150 INFO L93 Difference]: Finished difference Result 52 states and 56 transitions. [2018-01-21 00:30:15,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-01-21 00:30:15,150 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-01-21 00:30:15,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:15,151 INFO L225 Difference]: With dead ends: 52 [2018-01-21 00:30:15,151 INFO L226 Difference]: Without dead ends: 38 [2018-01-21 00:30:15,151 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 [2018-01-21 00:30:15,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-01-21 00:30:15,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2018-01-21 00:30:15,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-01-21 00:30:15,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2018-01-21 00:30:15,157 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 25 [2018-01-21 00:30:15,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:15,158 INFO L432 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2018-01-21 00:30:15,158 INFO L433 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-01-21 00:30:15,158 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2018-01-21 00:30:15,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 00:30:15,159 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:15,159 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] [2018-01-21 00:30:15,159 INFO L371 AbstractCegarLoop]: === Iteration 3 === [mainErr0EnsuresViolation]=== [2018-01-21 00:30:15,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1753910501, now seen corresponding path program 1 times [2018-01-21 00:30:15,159 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:15,160 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:15,160 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:15,160 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:15,160 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:15,166 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:30:15,167 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:30:15,167 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 [2018-01-21 00:30:15,174 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:15,174 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:30:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:15,200 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-21 00:30:15,201 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] [2018-01-21 00:30:15,202 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:30:15,202 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 00:30:15,272 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 00:30:15,272 INFO L268 AbstractInterpreter]: Visited 29 different actions 44 times. Merged at 15 different actions 15 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-01-21 00:30:15,285 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 00:30:15,286 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:30:15,286 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 00:30:15,292 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:15,293 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:30:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:15,305 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:30:15,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:30:15,322 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:30:15,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:30:15,380 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:15,381 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-01-21 00:30:15,381 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:15,381 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:30:15,381 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:30:15,381 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:30:15,381 INFO L87 Difference]: Start difference. First operand 35 states and 38 transitions. Second operand 5 states. [2018-01-21 00:30:15,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:15,434 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2018-01-21 00:30:15,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 00:30:15,434 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-21 00:30:15,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:15,435 INFO L225 Difference]: With dead ends: 98 [2018-01-21 00:30:15,436 INFO L226 Difference]: Without dead ends: 91 [2018-01-21 00:30:15,436 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:30:15,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2018-01-21 00:30:15,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 52. [2018-01-21 00:30:15,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-21 00:30:15,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-21 00:30:15,442 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-21 00:30:15,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:15,443 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-21 00:30:15,443 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:30:15,443 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-21 00:30:15,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 00:30:15,443 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:15,444 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] [2018-01-21 00:30:15,444 INFO L371 AbstractCegarLoop]: === Iteration 4 === [mainErr0EnsuresViolation]=== [2018-01-21 00:30:15,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1535055783, now seen corresponding path program 1 times [2018-01-21 00:30:15,444 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:15,445 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:15,445 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:15,445 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:15,446 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:15,451 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:30:15,451 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:30:15,451 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 [2018-01-21 00:30:15,459 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:15,459 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:30:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:15,499 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-21 00:30:15,499 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] [2018-01-21 00:30:15,501 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:30:15,501 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 00:30:15,576 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 00:30:15,577 INFO L268 AbstractInterpreter]: Visited 29 different actions 44 times. Merged at 15 different actions 15 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-01-21 00:30:15,578 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 00:30:15,578 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:30:15,579 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 00:30:15,591 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:15,591 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:30:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:15,610 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:30:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:30:15,651 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:30:15,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:30:15,773 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:15,774 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-01-21 00:30:15,774 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:15,774 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:30:15,775 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:30:15,775 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:30:15,775 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 5 states. [2018-01-21 00:30:15,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:15,842 INFO L93 Difference]: Finished difference Result 91 states and 97 transitions. [2018-01-21 00:30:15,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 00:30:15,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-21 00:30:15,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:15,843 INFO L225 Difference]: With dead ends: 91 [2018-01-21 00:30:15,843 INFO L226 Difference]: Without dead ends: 84 [2018-01-21 00:30:15,844 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-01-21 00:30:15,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-01-21 00:30:15,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 52. [2018-01-21 00:30:15,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-21 00:30:15,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-21 00:30:15,851 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-21 00:30:15,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:15,851 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-21 00:30:15,851 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:30:15,852 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-21 00:30:15,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 00:30:15,852 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:15,853 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] [2018-01-21 00:30:15,853 INFO L371 AbstractCegarLoop]: === Iteration 5 === [mainErr0EnsuresViolation]=== [2018-01-21 00:30:15,853 INFO L82 PathProgramCache]: Analyzing trace with hash -1887924007, now seen corresponding path program 1 times [2018-01-21 00:30:15,853 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:15,854 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:15,854 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:15,854 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:15,855 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:15,861 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:30:15,861 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:30:15,861 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 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-21 00:30:15,881 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:15,882 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:30:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:15,921 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-21 00:30:15,921 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] [2018-01-21 00:30:15,922 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:30:15,922 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 00:30:15,973 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 00:30:15,973 INFO L268 AbstractInterpreter]: Visited 29 different actions 44 times. Merged at 15 different actions 15 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-01-21 00:30:15,978 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 00:30:15,978 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:30:15,978 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 00:30:15,990 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:15,990 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:30:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:16,003 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:30:16,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:30:16,026 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:30:16,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:30:16,104 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:16,104 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-01-21 00:30:16,104 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:16,105 INFO L409 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-01-21 00:30:16,105 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-01-21 00:30:16,105 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 00:30:16,105 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 5 states. [2018-01-21 00:30:16,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:16,172 INFO L93 Difference]: Finished difference Result 106 states and 113 transitions. [2018-01-21 00:30:16,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-01-21 00:30:16,173 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2018-01-21 00:30:16,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:16,174 INFO L225 Difference]: With dead ends: 106 [2018-01-21 00:30:16,174 INFO L226 Difference]: Without dead ends: 99 [2018-01-21 00:30:16,175 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-01-21 00:30:16,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2018-01-21 00:30:16,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 52. [2018-01-21 00:30:16,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-01-21 00:30:16,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2018-01-21 00:30:16,182 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 30 [2018-01-21 00:30:16,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:16,182 INFO L432 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2018-01-21 00:30:16,182 INFO L433 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-01-21 00:30:16,182 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2018-01-21 00:30:16,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-01-21 00:30:16,183 INFO L314 BasicCegarLoop]: Found error trace [2018-01-21 00:30:16,183 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] [2018-01-21 00:30:16,183 INFO L371 AbstractCegarLoop]: === Iteration 6 === [mainErr0EnsuresViolation]=== [2018-01-21 00:30:16,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1669069289, now seen corresponding path program 1 times [2018-01-21 00:30:16,184 INFO L67 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-01-21 00:30:16,185 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:16,185 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:16,185 INFO L117 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-01-21 00:30:16,185 INFO L280 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-01-21 00:30:16,191 ERROR L243 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2018-01-21 00:30:16,191 INFO L266 seRefinementStrategy]: Advancing trace checker [2018-01-21 00:30:16,191 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 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2018-01-21 00:30:16,205 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:16,205 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_NO_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: null) [2018-01-21 00:30:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:16,247 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2018-01-21 00:30:16,247 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] [2018-01-21 00:30:16,249 INFO L147 AbstractInterpreter]: Using domain VPDomain [2018-01-21 00:30:16,249 INFO L101 FixpointEngine]: Starting fixpoint engine with domain VPDomain (maxUnwinding=3, maxParallelStates=2) [2018-01-21 00:30:16,308 INFO L259 AbstractInterpreter]: Some error location(s) were reachable [2018-01-21 00:30:16,308 INFO L268 AbstractInterpreter]: Visited 29 different actions 44 times. Merged at 15 different actions 15 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 27 variables. [2018-01-21 00:30:16,321 INFO L434 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-01-21 00:30:16,322 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-01-21 00:30:16,322 INFO L187 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-01-21 00:30:16,328 INFO L101 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-01-21 00:30:16,329 INFO L280 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-01-21 00:30:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-01-21 00:30:16,344 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-01-21 00:30:16,374 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc2.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc2.base| 1))) (and (= |c_#valid| (store (store .cse0 |c_main_#t~malloc3.base| 1) |main_#t~malloc2.base| 0)) (= (select |c_old(#valid)| |main_#t~malloc2.base|) 0) (= (select .cse0 |c_main_#t~malloc3.base|) 0)))) is different from true [2018-01-21 00:30:16,380 WARN L1029 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc2.base| Int) (|main_#t~malloc3.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc2.base| 1))) (and (= |c_#valid| (store (store (store .cse0 |main_#t~malloc3.base| 1) |main_#t~malloc2.base| 0) |main_#t~malloc3.base| 0)) (= (select |c_old(#valid)| |main_#t~malloc2.base|) 0) (= (select .cse0 |main_#t~malloc3.base|) 0)))) is different from true [2018-01-21 00:30:16,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:30:16,385 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-01-21 00:30:16,467 WARN L1007 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc3.base_70| Int)) (or (= |c_old(#valid)| (store (store (store |c_#valid| |v_main_#t~malloc3.base_70| 1) |c_main_#t~malloc2.base| 0) |v_main_#t~malloc3.base_70| 0)) (not (= (select |c_#valid| |v_main_#t~malloc3.base_70|) 0)))) is different from false [2018-01-21 00:30:16,472 WARN L1007 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc3.base_70| Int) (|v_main_#t~malloc2.base_70| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc2.base_70| 1))) (or (not (= (select |c_#valid| |v_main_#t~malloc2.base_70|) 0)) (= (store (store (store .cse0 |v_main_#t~malloc3.base_70| 1) |v_main_#t~malloc2.base_70| 0) |v_main_#t~malloc3.base_70| 0) |c_old(#valid)|) (not (= (select .cse0 |v_main_#t~malloc3.base_70|) 0))))) is different from false [2018-01-21 00:30:16,479 WARN L1007 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc3.base_70| Int) (|v_main_#t~malloc2.base_70| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc2.base_70| 1))) (or (not (= (select |c_#valid| |v_main_#t~malloc2.base_70|) 0)) (= |c_#valid| (store (store (store .cse0 |v_main_#t~malloc3.base_70| 1) |v_main_#t~malloc2.base_70| 0) |v_main_#t~malloc3.base_70| 0)) (not (= (select .cse0 |v_main_#t~malloc3.base_70|) 0))))) is different from false [2018-01-21 00:30:16,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-01-21 00:30:16,522 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-01-21 00:30:16,522 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2018-01-21 00:30:16,522 INFO L252 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-01-21 00:30:16,522 INFO L409 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-01-21 00:30:16,522 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-01-21 00:30:16,523 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=34, Unknown=4, NotChecked=52, Total=110 [2018-01-21 00:30:16,523 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand 7 states. [2018-01-21 00:30:16,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-01-21 00:30:16,551 INFO L93 Difference]: Finished difference Result 52 states and 57 transitions. [2018-01-21 00:30:16,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-01-21 00:30:16,551 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2018-01-21 00:30:16,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-01-21 00:30:16,551 INFO L225 Difference]: With dead ends: 52 [2018-01-21 00:30:16,552 INFO L226 Difference]: Without dead ends: 0 [2018-01-21 00:30:16,552 INFO L525 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=34, Unknown=4, NotChecked=52, Total=110 [2018-01-21 00:30:16,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-01-21 00:30:16,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-01-21 00:30:16,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-01-21 00:30:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-01-21 00:30:16,553 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2018-01-21 00:30:16,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-01-21 00:30:16,553 INFO L432 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-01-21 00:30:16,553 INFO L433 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-01-21 00:30:16,553 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-01-21 00:30:16,553 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-01-21 00:30:16,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.01 12:30:16 BoogieIcfgContainer [2018-01-21 00:30:16,556 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-01-21 00:30:16,557 INFO L168 Benchmark]: Toolchain (without parser) took 5469.77 ms. Allocated memory was 305.7 MB in the beginning and 518.5 MB in the end (delta: 212.9 MB). Free memory was 264.0 MB in the beginning and 379.5 MB in the end (delta: -115.6 MB). Peak memory consumption was 97.3 MB. Max. memory is 5.3 GB. [2018-01-21 00:30:16,557 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 305.7 MB. Free memory is still 270.0 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-01-21 00:30:16,557 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.98 ms. Allocated memory is still 305.7 MB. Free memory was 263.0 MB in the beginning and 253.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:30:16,558 INFO L168 Benchmark]: Boogie Preprocessor took 38.57 ms. Allocated memory is still 305.7 MB. Free memory was 253.0 MB in the beginning and 251.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-01-21 00:30:16,558 INFO L168 Benchmark]: RCFGBuilder took 261.76 ms. Allocated memory is still 305.7 MB. Free memory was 251.0 MB in the beginning and 235.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 5.3 GB. [2018-01-21 00:30:16,558 INFO L168 Benchmark]: TraceAbstraction took 4948.70 ms. Allocated memory was 305.7 MB in the beginning and 518.5 MB in the end (delta: 212.9 MB). Free memory was 235.5 MB in the beginning and 379.5 MB in the end (delta: -144.1 MB). Peak memory consumption was 68.8 MB. Max. memory is 5.3 GB. [2018-01-21 00:30:16,559 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 305.7 MB. Free memory is still 270.0 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 213.98 ms. Allocated memory is still 305.7 MB. Free memory was 263.0 MB in the beginning and 253.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 38.57 ms. Allocated memory is still 305.7 MB. Free memory was 253.0 MB in the beginning and 251.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 261.76 ms. Allocated memory is still 305.7 MB. Free memory was 251.0 MB in the beginning and 235.5 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 5.3 GB. * TraceAbstraction took 4948.70 ms. Allocated memory was 305.7 MB in the beginning and 518.5 MB in the end (delta: 212.9 MB). Free memory was 235.5 MB in the beginning and 379.5 MB in the end (delta: -144.1 MB). Peak memory consumption was 68.8 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 : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 337 LocStat_NO_SUPPORTING_DISEQUALITIES : 56 LocStat_NO_DISJUNCTIONS : -60 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 35 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 46 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 38 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 1.317425 RENAME_VARIABLES(MILLISECONDS) : 0.049248 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.813328 PROJECTAWAY(MILLISECONDS) : 2.448743 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001963 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.081726 ADD_EQUALITY(MILLISECONDS) : 0.049160 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.026722 #CONJOIN_DISJUNCTIVE : 63 #RENAME_VARIABLES : 110 #UNFREEZE : 0 #CONJOIN : 103 #PROJECTAWAY : 98 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 107 #ADD_EQUALITY : 44 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 30 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 357 LocStat_NO_SUPPORTING_DISEQUALITIES : 56 LocStat_NO_DISJUNCTIONS : -60 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 35 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 47 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 38 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.745466 RENAME_VARIABLES(MILLISECONDS) : 0.032687 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.469727 PROJECTAWAY(MILLISECONDS) : 1.437356 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002891 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.058531 ADD_EQUALITY(MILLISECONDS) : 0.032100 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.019680 #CONJOIN_DISJUNCTIVE : 63 #RENAME_VARIABLES : 110 #UNFREEZE : 0 #CONJOIN : 103 #PROJECTAWAY : 98 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 107 #ADD_EQUALITY : 45 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 30 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 359 LocStat_NO_SUPPORTING_DISEQUALITIES : 56 LocStat_NO_DISJUNCTIONS : -60 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 35 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 47 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 38 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.693388 RENAME_VARIABLES(MILLISECONDS) : 0.028229 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.430701 PROJECTAWAY(MILLISECONDS) : 1.175185 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002415 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.053127 ADD_EQUALITY(MILLISECONDS) : 0.024811 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.015076 #CONJOIN_DISJUNCTIVE : 63 #RENAME_VARIABLES : 110 #UNFREEZE : 0 #CONJOIN : 103 #PROJECTAWAY : 98 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 107 #ADD_EQUALITY : 45 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 30 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 379 LocStat_NO_SUPPORTING_DISEQUALITIES : 56 LocStat_NO_DISJUNCTIONS : -60 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 35 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 48 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 38 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.461936 RENAME_VARIABLES(MILLISECONDS) : 0.018072 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.276961 PROJECTAWAY(MILLISECONDS) : 1.000257 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001386 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.032634 ADD_EQUALITY(MILLISECONDS) : 0.017083 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.009653 #CONJOIN_DISJUNCTIVE : 63 #RENAME_VARIABLES : 110 #UNFREEZE : 0 #CONJOIN : 103 #PROJECTAWAY : 98 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 107 #ADD_EQUALITY : 46 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 28 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 328 LocStat_NO_SUPPORTING_DISEQUALITIES : 56 LocStat_NO_DISJUNCTIONS : -56 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 33 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 44 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 36 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.372419 RENAME_VARIABLES(MILLISECONDS) : 0.161296 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.342305 PROJECTAWAY(MILLISECONDS) : 0.118085 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.001874 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.186047 ADD_EQUALITY(MILLISECONDS) : 0.051506 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.037493 #CONJOIN_DISJUNCTIVE : 60 #RENAME_VARIABLES : 98 #UNFREEZE : 0 #CONJOIN : 92 #PROJECTAWAY : 83 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 95 #ADD_EQUALITY : 42 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 28 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 348 LocStat_NO_SUPPORTING_DISEQUALITIES : 56 LocStat_NO_DISJUNCTIONS : -56 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 33 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 45 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 36 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.410477 RENAME_VARIABLES(MILLISECONDS) : 0.169583 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.375373 PROJECTAWAY(MILLISECONDS) : 0.107728 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.003088 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.195829 ADD_EQUALITY(MILLISECONDS) : 0.054789 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.014318 #CONJOIN_DISJUNCTIVE : 60 #RENAME_VARIABLES : 98 #UNFREEZE : 0 #CONJOIN : 92 #PROJECTAWAY : 83 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 95 #ADD_EQUALITY : 43 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 28 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 350 LocStat_NO_SUPPORTING_DISEQUALITIES : 56 LocStat_NO_DISJUNCTIONS : -56 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 33 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 45 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 36 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.228606 RENAME_VARIABLES(MILLISECONDS) : 0.101370 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.204172 PROJECTAWAY(MILLISECONDS) : 0.083643 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002476 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.121976 ADD_EQUALITY(MILLISECONDS) : 0.038473 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.009786 #CONJOIN_DISJUNCTIVE : 60 #RENAME_VARIABLES : 98 #UNFREEZE : 0 #CONJOIN : 92 #PROJECTAWAY : 83 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 95 #ADD_EQUALITY : 43 #DISJOIN_DISJUNCTIVE : 0 #ADD_DISEQUALITY : 7 - StatisticsResult: ArrayEqualityDomainStatistics #Locations : 28 LocStat_MAX_WEQGRAPH_SIZE : 0 LocStat_MAX_SIZEOF_WEQEDGELABEL : 0 LocStat_NO_SUPPORTING_EQUALITIES : 370 LocStat_NO_SUPPORTING_DISEQUALITIES : 56 LocStat_NO_DISJUNCTIONS : -56 LocStat_MAX_NO_DISJUNCTIONS : -1 #Transitions : 33 TransStat_MAX_WEQGRAPH_SIZE : 0 TransStat_MAX_SIZEOF_WEQEDGELABEL : 0 TransStat_NO_SUPPORTING_EQUALITIES : 46 TransStat_NO_SUPPORTING_DISEQUALITIES : 13 TransStat_NO_DISJUNCTIONS : 36 TransStat_MAX_NO_DISJUNCTIONS : 4 - StatisticsResult: EqConstraintFactoryStatistics CONJOIN_DISJUNCTIVE(MILLISECONDS) : 0.232861 RENAME_VARIABLES(MILLISECONDS) : 0.123547 UNFREEZE(MILLISECONDS) : 0.000000 CONJOIN(MILLISECONDS) : 0.212479 PROJECTAWAY(MILLISECONDS) : 0.058807 ADD_WEAK_EQUALITY(MILLISECONDS) : 0.002463 DISJOIN(MILLISECONDS) : 0.000000 RENAME_VARIABLES_DISJUNCTIVE(MILLISECONDS) : 0.142004 ADD_EQUALITY(MILLISECONDS) : 0.037601 DISJOIN_DISJUNCTIVE(MILLISECONDS) : 0.000000 ADD_DISEQUALITY(MILLISECONDS) : 0.011249 #CONJOIN_DISJUNCTIVE : 60 #RENAME_VARIABLES : 98 #UNFREEZE : 0 #CONJOIN : 92 #PROJECTAWAY : 83 #ADD_WEAK_EQUALITY : 9 #DISJOIN : 0 #RENAME_VARIABLES_DISJUNCTIVE : 95 #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