java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/array-crafted/mapavg5.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:51:43,846 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:51:43,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:51:43,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:51:43,861 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:51:43,862 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:51:43,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:51:43,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:51:43,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:51:43,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:51:43,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:51:43,870 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:51:43,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:51:43,871 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:51:43,872 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:51:43,874 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:51:43,874 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:51:43,875 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:51:43,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:51:43,879 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:51:43,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:51:43,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:51:43,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:51:43,883 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:51:43,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:51:43,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:51:43,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:51:43,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:51:43,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:51:43,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:51:43,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:51:43,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:51:43,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:51:43,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:51:43,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:51:43,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:51:43,895 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:51:43,908 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:51:43,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:51:43,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:51:43,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:51:43,911 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:51:43,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:51:43,911 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:51:43,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:51:43,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:51:43,912 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:51:43,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:51:43,912 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:51:43,912 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:51:43,912 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:51:43,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:51:43,913 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:51:43,913 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:51:43,913 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:51:43,913 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:51:43,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:51:43,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:51:43,914 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:51:43,914 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:51:43,914 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:51:43,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:51:43,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:51:43,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:51:43,915 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:51:43,915 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-14 23:51:44,208 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:51:44,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:51:44,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:51:44,226 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:51:44,226 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:51:44,227 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/mapavg5.i [2019-10-14 23:51:44,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb81e6c12/5e91f4b82043487fa517113f32fbe245/FLAG083499a8a [2019-10-14 23:51:44,750 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:51:44,751 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-crafted/mapavg5.i [2019-10-14 23:51:44,758 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb81e6c12/5e91f4b82043487fa517113f32fbe245/FLAG083499a8a [2019-10-14 23:51:45,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb81e6c12/5e91f4b82043487fa517113f32fbe245 [2019-10-14 23:51:45,162 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:51:45,165 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:51:45,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:51:45,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:51:45,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:51:45,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:51:45" (1/1) ... [2019-10-14 23:51:45,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@209cf8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45, skipping insertion in model container [2019-10-14 23:51:45,173 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:51:45" (1/1) ... [2019-10-14 23:51:45,180 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:51:45,200 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:51:45,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:51:45,494 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:51:45,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:51:45,712 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:51:45,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45 WrapperNode [2019-10-14 23:51:45,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:51:45,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:51:45,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:51:45,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:51:45,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2019-10-14 23:51:45,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2019-10-14 23:51:45,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2019-10-14 23:51:45,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2019-10-14 23:51:45,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2019-10-14 23:51:45,785 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2019-10-14 23:51:45,787 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... [2019-10-14 23:51:45,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:51:45,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:51:45,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:51:45,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:51:45,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (1/1) ... No working directory specified, using /storage/repos/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 [2019-10-14 23:51:45,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:51:45,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:51:45,872 INFO L138 BoogieDeclarations]: Found implementation of procedure mapavg [2019-10-14 23:51:45,872 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:51:45,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:51:45,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:51:45,873 INFO L130 BoogieDeclarations]: Found specification of procedure mapavg [2019-10-14 23:51:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:51:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:51:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:51:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:51:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:51:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:51:45,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:51:46,229 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:51:46,230 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-14 23:51:46,231 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:51:46 BoogieIcfgContainer [2019-10-14 23:51:46,231 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:51:46,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:51:46,233 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:51:46,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:51:46,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:51:45" (1/3) ... [2019-10-14 23:51:46,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce58a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:51:46, skipping insertion in model container [2019-10-14 23:51:46,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:51:45" (2/3) ... [2019-10-14 23:51:46,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce58a1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:51:46, skipping insertion in model container [2019-10-14 23:51:46,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:51:46" (3/3) ... [2019-10-14 23:51:46,243 INFO L109 eAbstractionObserver]: Analyzing ICFG mapavg5.i [2019-10-14 23:51:46,253 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:51:46,261 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:51:46,273 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:51:46,298 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:51:46,298 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:51:46,299 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:51:46,299 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:51:46,299 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:51:46,299 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:51:46,299 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:51:46,299 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:51:46,318 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2019-10-14 23:51:46,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-14 23:51:46,326 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:46,327 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:51:46,329 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:46,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:46,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1453772458, now seen corresponding path program 1 times [2019-10-14 23:51:46,345 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:46,345 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479440073] [2019-10-14 23:51:46,346 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:46,346 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:46,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:46,466 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479440073] [2019-10-14 23:51:46,467 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-10-14 23:51:46,467 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664333527] [2019-10-14 23:51:46,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/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 [2019-10-14 23:51:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:46,555 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-14 23:51:46,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:51:46,603 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:51:46,604 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:51:46,655 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:51:46,657 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:51:46,657 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-14 23:51:46,657 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469994486] [2019-10-14 23:51:46,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:51:46,669 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:46,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:51:46,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:51:46,687 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2019-10-14 23:51:46,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:46,726 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2019-10-14 23:51:46,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:51:46,728 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 33 [2019-10-14 23:51:46,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:46,742 INFO L225 Difference]: With dead ends: 57 [2019-10-14 23:51:46,742 INFO L226 Difference]: Without dead ends: 27 [2019-10-14 23:51:46,748 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:51:46,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-14 23:51:46,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-10-14 23:51:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-14 23:51:46,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2019-10-14 23:51:46,805 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 33 [2019-10-14 23:51:46,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:46,806 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2019-10-14 23:51:46,806 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:51:46,806 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2019-10-14 23:51:46,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-14 23:51:46,808 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:46,809 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:51:47,010 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:51:47,013 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:47,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:47,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1976009436, now seen corresponding path program 1 times [2019-10-14 23:51:47,014 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:47,014 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115410011] [2019-10-14 23:51:47,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:47,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:47,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:47,040 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:51:47,041 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [137751091] [2019-10-14 23:51:47,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:51:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:47,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:51:47,105 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:51:47,134 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:51:47,134 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:51:47,176 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:51:47,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115410011] [2019-10-14 23:51:47,177 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:51:47,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [137751091] [2019-10-14 23:51:47,178 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:51:47,178 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-14 23:51:47,178 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647468790] [2019-10-14 23:51:47,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:51:47,180 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:47,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:51:47,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:51:47,181 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2019-10-14 23:51:47,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:47,245 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2019-10-14 23:51:47,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:51:47,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2019-10-14 23:51:47,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:47,247 INFO L225 Difference]: With dead ends: 48 [2019-10-14 23:51:47,247 INFO L226 Difference]: Without dead ends: 30 [2019-10-14 23:51:47,248 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:51:47,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-10-14 23:51:47,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-10-14 23:51:47,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-14 23:51:47,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-10-14 23:51:47,268 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2019-10-14 23:51:47,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:47,269 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-10-14 23:51:47,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:51:47,272 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-10-14 23:51:47,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-14 23:51:47,274 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:47,274 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:51:47,478 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:51:47,478 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:47,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:47,479 INFO L82 PathProgramCache]: Analyzing trace with hash -1480690264, now seen corresponding path program 1 times [2019-10-14 23:51:47,480 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:47,480 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342267919] [2019-10-14 23:51:47,481 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:47,481 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:47,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:47,517 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:51:47,517 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1665808266] [2019-10-14 23:51:47,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/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 [2019-10-14 23:51:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:47,639 INFO L256 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 23:51:47,643 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:51:47,667 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-14 23:51:47,667 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:51:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-14 23:51:47,765 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342267919] [2019-10-14 23:51:47,765 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:51:47,766 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665808266] [2019-10-14 23:51:47,766 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:51:47,766 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-10-14 23:51:47,766 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103868623] [2019-10-14 23:51:47,767 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:51:47,767 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:47,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:51:47,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:51:47,768 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 4 states. [2019-10-14 23:51:47,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:47,833 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2019-10-14 23:51:47,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:51:47,834 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2019-10-14 23:51:47,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:47,836 INFO L225 Difference]: With dead ends: 49 [2019-10-14 23:51:47,836 INFO L226 Difference]: Without dead ends: 32 [2019-10-14 23:51:47,837 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:51:47,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-14 23:51:47,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2019-10-14 23:51:47,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-14 23:51:47,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2019-10-14 23:51:47,850 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2019-10-14 23:51:47,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:47,851 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2019-10-14 23:51:47,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:51:47,851 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2019-10-14 23:51:47,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-14 23:51:47,856 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:51:47,856 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:51:48,066 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:51:48,067 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:51:48,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:48,067 INFO L82 PathProgramCache]: Analyzing trace with hash -36652570, now seen corresponding path program 1 times [2019-10-14 23:51:48,067 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-14 23:51:48,068 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16961176] [2019-10-14 23:51:48,068 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:48,068 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:51:48,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:51:48,107 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:51:48,107 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1426115605] [2019-10-14 23:51:48,109 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:51:48,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:51:48,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:51:48,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:51:48,234 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-10-14 23:51:48,234 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-14 23:51:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2019-10-14 23:51:48,314 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16961176] [2019-10-14 23:51:48,314 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:51:48,314 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426115605] [2019-10-14 23:51:48,314 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [548743234] [2019-10-14 23:51:48,325 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 44 [2019-10-14 23:51:48,370 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-14 23:51:48,370 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-14 23:51:48,485 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-14 23:51:48,487 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 2. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 31 variables. [2019-10-14 23:51:48,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:51:48,491 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-14 23:51:48,570 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-10-14 23:51:48,571 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-14 23:51:48,578 INFO L553 sIntCurrentIteration]: We unified 42 AI predicates to 42 [2019-10-14 23:51:48,578 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-14 23:51:48,579 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:51:48,579 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 6] total 9 [2019-10-14 23:51:48,580 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844723589] [2019-10-14 23:51:48,581 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 23:51:48,581 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-14 23:51:48,581 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-14 23:51:48,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 23:51:48,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:51:48,583 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 3 states. [2019-10-14 23:51:48,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:51:48,593 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2019-10-14 23:51:48,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:51:48,593 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 43 [2019-10-14 23:51:48,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:51:48,594 INFO L225 Difference]: With dead ends: 31 [2019-10-14 23:51:48,594 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:51:48,595 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-14 23:51:48,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:51:48,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:51:48,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:51:48,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:51:48,596 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2019-10-14 23:51:48,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:51:48,596 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:51:48,596 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 23:51:48,596 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:51:48,597 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:51:48,809 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:51:48,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:51:48,893 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:51:48,894 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:51:48,894 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:51:48,894 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:51:48,895 INFO L439 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648))) [2019-10-14 23:51:48,895 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:51:48,895 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:51:48,895 INFO L443 ceAbstractionStarter]: For program point L33(line 33) no Hoare annotation was computed. [2019-10-14 23:51:48,895 INFO L443 ceAbstractionStarter]: For program point L29-2(lines 29 31) no Hoare annotation was computed. [2019-10-14 23:51:48,896 INFO L439 ceAbstractionStarter]: At program point L29-3(lines 29 31) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648)))) [2019-10-14 23:51:48,896 INFO L439 ceAbstractionStarter]: At program point L29-4(lines 29 31) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648)))) [2019-10-14 23:51:48,896 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 19 49) no Hoare annotation was computed. [2019-10-14 23:51:48,896 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 19 49) no Hoare annotation was computed. [2019-10-14 23:51:48,896 INFO L443 ceAbstractionStarter]: For program point L44(lines 44 46) no Hoare annotation was computed. [2019-10-14 23:51:48,897 INFO L439 ceAbstractionStarter]: At program point L42(line 42) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648)))) [2019-10-14 23:51:48,897 INFO L443 ceAbstractionStarter]: For program point L44-2(lines 44 46) no Hoare annotation was computed. [2019-10-14 23:51:48,897 INFO L443 ceAbstractionStarter]: For program point L42-1(line 42) no Hoare annotation was computed. [2019-10-14 23:51:48,897 INFO L439 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648)))) [2019-10-14 23:51:48,897 INFO L443 ceAbstractionStarter]: For program point L38-2(lines 38 40) no Hoare annotation was computed. [2019-10-14 23:51:48,897 INFO L443 ceAbstractionStarter]: For program point L36-1(line 36) no Hoare annotation was computed. [2019-10-14 23:51:48,898 INFO L439 ceAbstractionStarter]: At program point L38-3(lines 38 40) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648)))) [2019-10-14 23:51:48,898 INFO L443 ceAbstractionStarter]: For program point L38-4(lines 38 40) no Hoare annotation was computed. [2019-10-14 23:51:48,898 INFO L439 ceAbstractionStarter]: At program point mainENTRY(lines 19 49) the Hoare annotation is: (or (not (<= |old(~N~0)| 2147483647)) (not (<= 0 (+ |old(~N~0)| 2147483648))) (and (<= ~N~0 2147483647) (<= 0 (+ ~N~0 2147483648)))) [2019-10-14 23:51:48,898 INFO L443 ceAbstractionStarter]: For program point L22(lines 22 47) no Hoare annotation was computed. [2019-10-14 23:51:48,898 INFO L443 ceAbstractionStarter]: For program point L22-2(lines 22 47) no Hoare annotation was computed. [2019-10-14 23:51:48,899 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) no Hoare annotation was computed. [2019-10-14 23:51:48,899 INFO L443 ceAbstractionStarter]: For program point L45(line 45) no Hoare annotation was computed. [2019-10-14 23:51:48,899 INFO L443 ceAbstractionStarter]: For program point mapavgFINAL(lines 8 17) no Hoare annotation was computed. [2019-10-14 23:51:48,899 INFO L446 ceAbstractionStarter]: At program point mapavgENTRY(lines 8 17) the Hoare annotation is: true [2019-10-14 23:51:48,899 INFO L443 ceAbstractionStarter]: For program point mapavgEXIT(lines 8 17) no Hoare annotation was computed. [2019-10-14 23:51:48,899 INFO L443 ceAbstractionStarter]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2019-10-14 23:51:48,899 INFO L446 ceAbstractionStarter]: At program point L13-3(lines 13 15) the Hoare annotation is: true [2019-10-14 23:51:48,900 INFO L443 ceAbstractionStarter]: For program point L13-4(lines 13 15) no Hoare annotation was computed. [2019-10-14 23:51:48,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:51:48 BoogieIcfgContainer [2019-10-14 23:51:48,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:51:48,918 INFO L168 Benchmark]: Toolchain (without parser) took 3753.88 ms. Allocated memory was 141.6 MB in the beginning and 230.2 MB in the end (delta: 88.6 MB). Free memory was 99.3 MB in the beginning and 131.2 MB in the end (delta: -31.9 MB). Peak memory consumption was 56.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:48,919 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 117.9 MB in the beginning and 117.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:51:48,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 546.85 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 99.1 MB in the beginning and 183.1 MB in the end (delta: -84.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:48,921 INFO L168 Benchmark]: Boogie Preprocessor took 82.54 ms. Allocated memory is still 204.5 MB. Free memory was 183.1 MB in the beginning and 181.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:48,922 INFO L168 Benchmark]: RCFGBuilder took 435.69 ms. Allocated memory is still 204.5 MB. Free memory was 181.3 MB in the beginning and 164.5 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:48,923 INFO L168 Benchmark]: TraceAbstraction took 2682.72 ms. Allocated memory was 204.5 MB in the beginning and 230.2 MB in the end (delta: 25.7 MB). Free memory was 163.8 MB in the beginning and 131.2 MB in the end (delta: 32.6 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2019-10-14 23:51:48,927 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.6 MB. Free memory was 117.9 MB in the beginning and 117.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 546.85 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 99.1 MB in the beginning and 183.1 MB in the end (delta: -84.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.54 ms. Allocated memory is still 204.5 MB. Free memory was 183.1 MB in the beginning and 181.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.69 ms. Allocated memory is still 204.5 MB. Free memory was 181.3 MB in the beginning and 164.5 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2682.72 ms. Allocated memory was 204.5 MB in the beginning and 230.2 MB in the end (delta: 25.7 MB). Free memory was 163.8 MB in the beginning and 131.2 MB in the end (delta: 32.6 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 45]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: !(\old(N) <= 2147483647) || !(0 <= \old(N) + 2147483648) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: !(\old(N) <= 2147483647) || !(0 <= \old(N) + 2147483648) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 33 locations, 1 error locations. Result: SAFE, OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 27 SDslu, 51 SDs, 0 SdLazy, 50 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 245 GetRequests, 235 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 31 PreInvPairs, 31 NumberOfFragments, 88 HoareAnnotationTreeSize, 31 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 179 NumberOfCodeBlocks, 179 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 284 ConstructedInterpolants, 0 QuantifiedInterpolants, 15080 SizeOfPredicates, 6 NumberOfNonLiveVariables, 583 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 140/166 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 167, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9682539682539684, AVG_VARS_REMOVED_DURING_WEAKENING: 1.2380952380952381, AVG_WEAKENED_CONJUNCTS: 0.38095238095238093, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...