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/loops/sum01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:06:13,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:06:13,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:06:13,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:06:13,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:06:13,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:06:13,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:06:13,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:06:13,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:06:13,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:06:13,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:06:13,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:06:13,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:06:13,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:06:13,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:06:13,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:06:13,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:06:13,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:06:13,057 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:06:13,061 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:06:13,065 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:06:13,067 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:06:13,068 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:06:13,069 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:06:13,071 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 01:06:13,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:06:13,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:06:13,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:06:13,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:06:13,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:06:13,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:06:13,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:06:13,077 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:06:13,077 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:06:13,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:06:13,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:06:13,080 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 [2019-10-15 01:06:13,093 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:06:13,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:06:13,095 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:06:13,095 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:06:13,095 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:06:13,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:06:13,095 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:06:13,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:06:13,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:06:13,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:06:13,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:06:13,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:06:13,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:06:13,097 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:06:13,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:06:13,097 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:06:13,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:06:13,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:06:13,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:06:13,098 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:06:13,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:06:13,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:06:13,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:06:13,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:06:13,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:06:13,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:06:13,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:06:13,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:06:13,100 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 [2019-10-15 01:06:13,399 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:06:13,418 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:06:13,422 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:06:13,423 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:06:13,424 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:06:13,424 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-1.i [2019-10-15 01:06:13,498 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f2929793/e586317848204e66bc896edee8cf07ea/FLAGd7f8d7f86 [2019-10-15 01:06:13,946 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:06:13,946 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-1.i [2019-10-15 01:06:13,952 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f2929793/e586317848204e66bc896edee8cf07ea/FLAGd7f8d7f86 [2019-10-15 01:06:14,325 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f2929793/e586317848204e66bc896edee8cf07ea [2019-10-15 01:06:14,335 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:06:14,337 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:06:14,338 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:14,338 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:06:14,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:06:14,345 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:14" (1/1) ... [2019-10-15 01:06:14,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70fc59ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:14, skipping insertion in model container [2019-10-15 01:06:14,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:14" (1/1) ... [2019-10-15 01:06:14,357 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:06:14,375 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:06:14,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:14,570 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:06:14,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:14,598 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:06:14,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:14 WrapperNode [2019-10-15 01:06:14,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:14,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:06:14,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:06:14,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:06:14,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:14" (1/1) ... [2019-10-15 01:06:14,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:14" (1/1) ... [2019-10-15 01:06:14,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:14" (1/1) ... [2019-10-15 01:06:14,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:14" (1/1) ... [2019-10-15 01:06:14,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:14" (1/1) ... [2019-10-15 01:06:14,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:14" (1/1) ... [2019-10-15 01:06:14,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:14" (1/1) ... [2019-10-15 01:06:14,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:06:14,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:06:14,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:06:14,706 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:06:14,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:14" (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 [2019-10-15 01:06:14,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:06:14,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:06:14,754 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:06:14,754 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:06:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:06:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:06:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-15 01:06:14,754 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:06:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:06:14,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:06:14,919 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:06:14,920 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:06:14,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:14 BoogieIcfgContainer [2019-10-15 01:06:14,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:06:14,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:06:14,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:06:14,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:06:14,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:06:14" (1/3) ... [2019-10-15 01:06:14,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100d9e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:14, skipping insertion in model container [2019-10-15 01:06:14,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:14" (2/3) ... [2019-10-15 01:06:14,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100d9e17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:14, skipping insertion in model container [2019-10-15 01:06:14,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:14" (3/3) ... [2019-10-15 01:06:14,929 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-1.i [2019-10-15 01:06:14,939 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:06:14,947 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:06:14,960 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:06:15,005 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:06:15,005 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:06:15,005 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:06:15,006 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:06:15,006 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:06:15,006 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:06:15,006 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:06:15,007 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:06:15,032 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-15 01:06:15,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:06:15,039 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:15,040 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:15,042 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:15,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:15,049 INFO L82 PathProgramCache]: Analyzing trace with hash -721501374, now seen corresponding path program 1 times [2019-10-15 01:06:15,061 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:15,062 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469378864] [2019-10-15 01:06:15,062 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:15,062 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:15,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:15,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:15,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:15,177 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469378864] [2019-10-15 01:06:15,178 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:15,178 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:06:15,178 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034711921] [2019-10-15 01:06:15,182 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:06:15,184 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:15,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:06:15,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:06:15,198 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-15 01:06:15,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:15,222 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-10-15 01:06:15,222 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:06:15,224 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 01:06:15,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:15,232 INFO L225 Difference]: With dead ends: 30 [2019-10-15 01:06:15,232 INFO L226 Difference]: Without dead ends: 13 [2019-10-15 01:06:15,236 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:06:15,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-15 01:06:15,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-15 01:06:15,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-15 01:06:15,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-10-15 01:06:15,270 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2019-10-15 01:06:15,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:15,270 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-10-15 01:06:15,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:06:15,270 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-10-15 01:06:15,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:06:15,271 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:15,271 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:15,272 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:15,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:15,272 INFO L82 PathProgramCache]: Analyzing trace with hash -731660105, now seen corresponding path program 1 times [2019-10-15 01:06:15,273 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:15,273 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579805752] [2019-10-15 01:06:15,273 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:15,273 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:15,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:15,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:15,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:15,361 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579805752] [2019-10-15 01:06:15,361 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:15,361 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 01:06:15,362 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174029565] [2019-10-15 01:06:15,363 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 01:06:15,364 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:15,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 01:06:15,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:06:15,365 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2019-10-15 01:06:15,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:15,424 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-10-15 01:06:15,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:06:15,425 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-15 01:06:15,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:15,426 INFO L225 Difference]: With dead ends: 21 [2019-10-15 01:06:15,426 INFO L226 Difference]: Without dead ends: 16 [2019-10-15 01:06:15,427 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-15 01:06:15,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-15 01:06:15,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-15 01:06:15,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-15 01:06:15,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-15 01:06:15,433 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-10-15 01:06:15,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:15,434 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-15 01:06:15,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 01:06:15,434 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-15 01:06:15,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-15 01:06:15,435 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:15,435 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:15,435 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:15,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:15,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1637338477, now seen corresponding path program 1 times [2019-10-15 01:06:15,436 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:15,436 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362079129] [2019-10-15 01:06:15,437 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:15,437 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:15,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:15,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:15,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:15,704 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362079129] [2019-10-15 01:06:15,704 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145788745] [2019-10-15 01:06:15,704 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 [2019-10-15 01:06:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:15,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 01:06:15,766 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:15,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:15,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:15,992 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:16,192 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:16,193 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1565857697] [2019-10-15 01:06:16,202 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 14 [2019-10-15 01:06:16,259 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:06:16,259 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:06:16,343 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-15 01:06:16,485 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-15 01:06:16,488 INFO L272 AbstractInterpreter]: Visited 13 different actions 61 times. Merged at 4 different actions 24 times. Widened at 1 different actions 4 times. Performed 101 root evaluator evaluations with a maximum evaluation depth of 6. Performed 101 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2019-10-15 01:06:16,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:16,494 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:06:16,494 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:06:16,494 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 21 [2019-10-15 01:06:16,494 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727221928] [2019-10-15 01:06:16,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-15 01:06:16,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:16,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-15 01:06:16,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:06:16,497 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 21 states. [2019-10-15 01:06:16,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:16,729 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2019-10-15 01:06:16,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-15 01:06:16,730 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 13 [2019-10-15 01:06:16,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:16,731 INFO L225 Difference]: With dead ends: 38 [2019-10-15 01:06:16,731 INFO L226 Difference]: Without dead ends: 23 [2019-10-15 01:06:16,733 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2019-10-15 01:06:16,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-15 01:06:16,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2019-10-15 01:06:16,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-15 01:06:16,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-10-15 01:06:16,738 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2019-10-15 01:06:16,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:16,739 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-10-15 01:06:16,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-15 01:06:16,739 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-10-15 01:06:16,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-15 01:06:16,740 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:16,740 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:16,945 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:16,945 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:16,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:16,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1350121109, now seen corresponding path program 1 times [2019-10-15 01:06:16,946 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:16,946 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542418980] [2019-10-15 01:06:16,946 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:16,947 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:16,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:17,013 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:17,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542418980] [2019-10-15 01:06:17,014 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119961177] [2019-10-15 01:06:17,014 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 [2019-10-15 01:06:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:17,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:06:17,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:17,043 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:17,043 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:17,098 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:17,099 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [926277736] [2019-10-15 01:06:17,099 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 20 [2019-10-15 01:06:17,101 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:06:17,101 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:06:17,105 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-15 01:06:17,214 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-15 01:06:17,215 INFO L272 AbstractInterpreter]: Visited 14 different actions 90 times. Merged at 5 different actions 36 times. Widened at 1 different actions 6 times. Performed 158 root evaluator evaluations with a maximum evaluation depth of 6. Performed 158 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 7 fixpoints after 2 different actions. Largest state had 5 variables. [2019-10-15 01:06:17,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:17,216 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:06:17,216 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:06:17,216 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2019-10-15 01:06:17,217 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365597248] [2019-10-15 01:06:17,218 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:06:17,219 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:17,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:06:17,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:06:17,220 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2019-10-15 01:06:17,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:17,277 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2019-10-15 01:06:17,279 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:06:17,279 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2019-10-15 01:06:17,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:17,282 INFO L225 Difference]: With dead ends: 42 [2019-10-15 01:06:17,282 INFO L226 Difference]: Without dead ends: 34 [2019-10-15 01:06:17,283 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:06:17,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-15 01:06:17,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2019-10-15 01:06:17,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-15 01:06:17,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2019-10-15 01:06:17,301 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2019-10-15 01:06:17,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:17,301 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2019-10-15 01:06:17,301 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:06:17,301 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2019-10-15 01:06:17,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-15 01:06:17,303 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:17,303 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:17,514 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:17,515 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:17,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:17,515 INFO L82 PathProgramCache]: Analyzing trace with hash -424886253, now seen corresponding path program 2 times [2019-10-15 01:06:17,515 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:17,515 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956420982] [2019-10-15 01:06:17,516 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:17,516 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:17,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:17,745 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-15 01:06:17,746 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956420982] [2019-10-15 01:06:17,746 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619455391] [2019-10-15 01:06:17,746 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2019-10-15 01:06:17,783 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-10-15 01:06:17,783 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:06:17,784 WARN L254 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-15 01:06:17,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:18,020 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:18,058 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:18,058 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:18,369 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:18,369 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [937375854] [2019-10-15 01:06:18,369 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-10-15 01:06:18,370 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-10-15 01:06:18,370 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:06:18,370 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 30 [2019-10-15 01:06:18,370 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704871865] [2019-10-15 01:06:18,374 INFO L442 AbstractCegarLoop]: Interpolant automaton has 30 states [2019-10-15 01:06:18,374 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:18,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2019-10-15 01:06:18,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2019-10-15 01:06:18,375 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 30 states. [2019-10-15 01:06:18,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:18,996 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2019-10-15 01:06:18,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-10-15 01:06:18,997 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 19 [2019-10-15 01:06:18,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:18,998 INFO L225 Difference]: With dead ends: 41 [2019-10-15 01:06:18,998 INFO L226 Difference]: Without dead ends: 35 [2019-10-15 01:06:19,001 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=288, Invalid=1604, Unknown=0, NotChecked=0, Total=1892 [2019-10-15 01:06:19,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-10-15 01:06:19,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2019-10-15 01:06:19,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-15 01:06:19,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2019-10-15 01:06:19,016 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 19 [2019-10-15 01:06:19,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:19,016 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2019-10-15 01:06:19,016 INFO L463 AbstractCegarLoop]: Interpolant automaton has 30 states. [2019-10-15 01:06:19,016 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2019-10-15 01:06:19,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-15 01:06:19,020 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:19,020 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:19,229 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:19,230 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:19,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:19,230 INFO L82 PathProgramCache]: Analyzing trace with hash 98169237, now seen corresponding path program 2 times [2019-10-15 01:06:19,231 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:19,231 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701831423] [2019-10-15 01:06:19,232 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:19,232 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:19,232 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:19,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:19,312 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:19,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701831423] [2019-10-15 01:06:19,313 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685413197] [2019-10-15 01:06:19,313 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2019-10-15 01:06:19,351 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2019-10-15 01:06:19,351 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:06:19,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:06:19,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:19,360 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:19,361 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:19,416 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [8354586] [2019-10-15 01:06:19,416 INFO L195 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2019-10-15 01:06:19,416 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2019-10-15 01:06:19,416 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:06:19,416 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2019-10-15 01:06:19,416 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182350794] [2019-10-15 01:06:19,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 01:06:19,417 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:19,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 01:06:19,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:06:19,418 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 11 states. [2019-10-15 01:06:19,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:19,485 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2019-10-15 01:06:19,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:06:19,487 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2019-10-15 01:06:19,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:19,488 INFO L225 Difference]: With dead ends: 51 [2019-10-15 01:06:19,488 INFO L226 Difference]: Without dead ends: 43 [2019-10-15 01:06:19,489 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-10-15 01:06:19,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-15 01:06:19,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-10-15 01:06:19,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-15 01:06:19,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2019-10-15 01:06:19,500 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 31 [2019-10-15 01:06:19,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:19,500 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2019-10-15 01:06:19,500 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-15 01:06:19,500 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2019-10-15 01:06:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-15 01:06:19,502 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:19,502 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:19,713 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:19,715 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:19,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:19,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1032151993, now seen corresponding path program 3 times [2019-10-15 01:06:19,716 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:19,716 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480438235] [2019-10-15 01:06:19,716 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:19,717 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:19,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-15 01:06:19,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-15 01:06:19,831 INFO L168 tionRefinementEngine]: Strategy TAIPAN found a feasible trace [2019-10-15 01:06:19,831 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-15 01:06:19,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:06:19 BoogieIcfgContainer [2019-10-15 01:06:19,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:06:19,871 INFO L168 Benchmark]: Toolchain (without parser) took 5533.64 ms. Allocated memory was 137.9 MB in the beginning and 248.0 MB in the end (delta: 110.1 MB). Free memory was 103.1 MB in the beginning and 179.3 MB in the end (delta: -76.3 MB). Peak memory consumption was 33.8 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:19,872 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 01:06:19,873 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.05 ms. Allocated memory is still 137.9 MB. Free memory was 102.9 MB in the beginning and 93.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:19,874 INFO L168 Benchmark]: Boogie Preprocessor took 105.11 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 93.2 MB in the beginning and 179.6 MB in the end (delta: -86.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:19,874 INFO L168 Benchmark]: RCFGBuilder took 215.74 ms. Allocated memory is still 200.8 MB. Free memory was 179.6 MB in the beginning and 168.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:19,875 INFO L168 Benchmark]: TraceAbstraction took 4946.52 ms. Allocated memory was 200.8 MB in the beginning and 248.0 MB in the end (delta: 47.2 MB). Free memory was 168.4 MB in the beginning and 179.3 MB in the end (delta: -11.0 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:19,879 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 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 262.05 ms. Allocated memory is still 137.9 MB. Free memory was 102.9 MB in the beginning and 93.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.11 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 93.2 MB in the beginning and 179.6 MB in the end (delta: -86.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 215.74 ms. Allocated memory is still 200.8 MB. Free memory was 179.6 MB in the beginning and 168.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4946.52 ms. Allocated memory was 200.8 MB in the beginning and 248.0 MB in the end (delta: 47.2 MB). Free memory was 168.4 MB in the beginning and 179.3 MB in the end (delta: -11.0 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 VAL [i=1, n=10, n=0] [L13] COND TRUE i<=n VAL [i=1, n=0, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=1, n=2, n=10] [L13] i++ VAL [i=2, n=2, n=10] [L13] COND TRUE i<=n VAL [i=2, n=2, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=2, n=10, n=4] [L13] i++ VAL [i=3, n=4, n=10] [L13] COND TRUE i<=n VAL [i=3, n=10, n=4] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=3, n=6, n=10] [L13] i++ VAL [i=4, n=10, n=6] [L13] COND TRUE i<=n VAL [i=4, n=10, n=6] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=4, n=8, n=10] [L13] i++ VAL [i=5, n=10, n=8] [L13] COND TRUE i<=n VAL [i=5, n=10, n=8] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=5, n=10, n=10] [L13] i++ VAL [i=6, n=10, n=10] [L13] COND TRUE i<=n VAL [i=6, n=10, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=6, n=10, n=12] [L13] i++ VAL [i=7, n=10, n=12] [L13] COND TRUE i<=n VAL [i=7, n=10, n=12] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=7, n=14, n=10] [L13] i++ VAL [i=8, n=10, n=14] [L13] COND TRUE i<=n VAL [i=8, n=10, n=14] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=8, n=16, n=10] [L13] i++ VAL [i=9, n=16, n=10] [L13] COND TRUE i<=n VAL [i=9, n=16, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=9, n=18, n=10] [L13] i++ VAL [i=10, n=18, n=10] [L13] COND TRUE i<=n VAL [i=10, n=10, n=18] [L14] COND FALSE !(i<10) VAL [i=10, n=18, n=10] [L13] i++ VAL [i=11, n=10, n=18] [L13] COND FALSE !(i<=n) VAL [i=11, n=18, n=10] [L17] CALL __VERIFIER_assert(sn==n*(2) || sn == 0) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: UNSAFE, OverallTime: 4.8s, OverallIterations: 7, TraceHistogramMax: 10, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 73 SDslu, 319 SDs, 0 SdLazy, 436 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 222 GetRequests, 133 SyntacticMatches, 5 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=6, 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, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 224 NumberOfCodeBlocks, 224 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 252 ConstructedInterpolants, 0 QuantifiedInterpolants, 20382 SizeOfPredicates, 10 NumberOfNonLiveVariables, 184 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 59/285 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...