/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:49:16,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:49:16,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:49:16,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:49:16,987 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:49:16,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:49:16,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:49:17,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:49:17,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:49:17,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:49:17,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:49:17,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:49:17,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:49:17,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:49:17,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:49:17,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:49:17,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:49:17,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:49:17,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:49:17,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:49:17,031 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:49:17,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:49:17,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:49:17,036 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:49:17,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:49:17,048 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:49:17,048 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:49:17,050 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:49:17,050 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 [2020-07-20 11:49:17,085 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:49:17,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:49:17,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:49:17,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:49:17,091 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:49:17,091 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:49:17,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:49:17,092 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:49:17,092 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:49:17,092 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:49:17,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:49:17,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:49:17,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:49:17,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:49:17,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:49:17,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:49:17,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:49:17,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:49:17,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:49:17,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:49:17,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:49:17,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:49:17,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:49:17,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:49:17,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:49:17,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:49:17,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:17,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:49:17,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:49:17,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:49:17,383 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:49:17,396 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:49:17,400 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:49:17,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:49:17,402 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:49:17,403 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-1.c [2020-07-20 11:49:17,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dede0b227/307fccf96d73406eb0e063df35792349/FLAG025f37bc9 [2020-07-20 11:49:17,968 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:49:17,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-1.c [2020-07-20 11:49:17,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dede0b227/307fccf96d73406eb0e063df35792349/FLAG025f37bc9 [2020-07-20 11:49:18,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dede0b227/307fccf96d73406eb0e063df35792349 [2020-07-20 11:49:18,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:49:18,340 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:49:18,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:49:18,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:49:18,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:49:18,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:49:18" (1/1) ... [2020-07-20 11:49:18,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@797d48eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:18, skipping insertion in model container [2020-07-20 11:49:18,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:49:18" (1/1) ... [2020-07-20 11:49:18,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:49:18,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:49:18,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:49:18,548 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:49:18,563 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:49:18,577 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:49:18,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:18 WrapperNode [2020-07-20 11:49:18,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:49:18,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:49:18,579 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:49:18,579 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:49:18,589 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:18" (1/1) ... [2020-07-20 11:49:18,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:18" (1/1) ... [2020-07-20 11:49:18,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:18" (1/1) ... [2020-07-20 11:49:18,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:18" (1/1) ... [2020-07-20 11:49:18,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:18" (1/1) ... [2020-07-20 11:49:18,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:18" (1/1) ... [2020-07-20 11:49:18,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:18" (1/1) ... [2020-07-20 11:49:18,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:49:18,705 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:49:18,705 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:49:18,705 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:49:18,706 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:18" (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 [2020-07-20 11:49:18,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:49:18,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:49:18,769 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 11:49:18,770 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:49:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:49:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:49:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:49:18,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:49:18,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:49:18,945 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:49:18,945 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 11:49:18,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:49:18 BoogieIcfgContainer [2020-07-20 11:49:18,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:49:18,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:49:18,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:49:18,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:49:18,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:49:18" (1/3) ... [2020-07-20 11:49:18,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449c383a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:49:18, skipping insertion in model container [2020-07-20 11:49:18,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:18" (2/3) ... [2020-07-20 11:49:18,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449c383a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:49:18, skipping insertion in model container [2020-07-20 11:49:18,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:49:18" (3/3) ... [2020-07-20 11:49:18,957 INFO L109 eAbstractionObserver]: Analyzing ICFG underapprox_2-1.c [2020-07-20 11:49:18,968 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:49:18,975 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:49:18,986 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:49:19,010 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:49:19,010 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:49:19,010 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:49:19,011 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:49:19,011 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:49:19,011 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:49:19,011 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:49:19,011 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:49:19,029 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-20 11:49:19,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 11:49:19,033 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:49:19,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:49:19,035 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:49:19,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:49:19,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1846144830, now seen corresponding path program 1 times [2020-07-20 11:49:19,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:49:19,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498456516] [2020-07-20 11:49:19,047 INFO L95 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:49:19,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 11:49:19,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:49:19,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:49:19,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:49:19,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498456516] [2020-07-20 11:49:19,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:49:19,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:49:19,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251391208] [2020-07-20 11:49:19,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:49:19,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:49:19,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:49:19,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:49:19,241 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 3 states. [2020-07-20 11:49:19,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:49:19,273 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-07-20 11:49:19,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:49:19,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-20 11:49:19,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:49:19,282 INFO L225 Difference]: With dead ends: 29 [2020-07-20 11:49:19,282 INFO L226 Difference]: Without dead ends: 12 [2020-07-20 11:49:19,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:49:19,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-07-20 11:49:19,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-07-20 11:49:19,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-07-20 11:49:19,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-07-20 11:49:19,323 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2020-07-20 11:49:19,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:49:19,324 INFO L479 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-07-20 11:49:19,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:49:19,324 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-07-20 11:49:19,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 11:49:19,325 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:49:19,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:49:19,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:19,540 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:49:19,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:49:19,542 INFO L82 PathProgramCache]: Analyzing trace with hash 1432376145, now seen corresponding path program 1 times [2020-07-20 11:49:19,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:49:19,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730389703] [2020-07-20 11:49:19,544 INFO L95 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:49:19,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 11:49:19,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:49:19,605 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:49:19,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:49:19,654 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:49:19,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730389703] [2020-07-20 11:49:19,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:49:19,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-07-20 11:49:19,656 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772290303] [2020-07-20 11:49:19,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:49:19,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:49:19,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:49:19,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:49:19,660 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 6 states. [2020-07-20 11:49:19,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:49:19,749 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-07-20 11:49:19,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:49:19,750 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-07-20 11:49:19,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:49:19,752 INFO L225 Difference]: With dead ends: 20 [2020-07-20 11:49:19,752 INFO L226 Difference]: Without dead ends: 15 [2020-07-20 11:49:19,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:49:19,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-20 11:49:19,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-20 11:49:19,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-20 11:49:19,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-07-20 11:49:19,759 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2020-07-20 11:49:19,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:49:19,759 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-07-20 11:49:19,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:49:19,760 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-20 11:49:19,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 11:49:19,760 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:49:19,760 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:49:19,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:19,974 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:49:19,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:49:19,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1031021570, now seen corresponding path program 2 times [2020-07-20 11:49:19,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:49:19,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1438672359] [2020-07-20 11:49:19,977 INFO L95 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:49:20,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 11:49:20,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:49:20,076 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:49:20,076 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:49:20,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:49:20,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1438672359] [2020-07-20 11:49:20,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:49:20,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-07-20 11:49:20,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301660329] [2020-07-20 11:49:20,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-20 11:49:20,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:49:20,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-20 11:49:20,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-07-20 11:49:20,192 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 12 states. [2020-07-20 11:49:20,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:49:20,249 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2020-07-20 11:49:20,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:49:20,249 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 14 [2020-07-20 11:49:20,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:49:20,250 INFO L225 Difference]: With dead ends: 22 [2020-07-20 11:49:20,251 INFO L226 Difference]: Without dead ends: 17 [2020-07-20 11:49:20,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-07-20 11:49:20,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-20 11:49:20,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-20 11:49:20,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-20 11:49:20,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-07-20 11:49:20,257 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 14 [2020-07-20 11:49:20,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:49:20,257 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-07-20 11:49:20,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-20 11:49:20,257 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-07-20 11:49:20,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 11:49:20,258 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:49:20,258 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:49:20,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:20,473 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:49:20,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:49:20,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1802490274, now seen corresponding path program 3 times [2020-07-20 11:49:20,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:49:20,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613621971] [2020-07-20 11:49:20,476 INFO L95 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:49:20,508 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:49:20,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 11:49:20,519 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 11:49:20,535 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 11:49:20,535 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 11:49:20,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:20,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:49:20 BoogieIcfgContainer [2020-07-20 11:49:20,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:49:20,777 INFO L168 Benchmark]: Toolchain (without parser) took 2437.73 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 102.4 MB in the beginning and 101.5 MB in the end (delta: 940.4 kB). Peak memory consumption was 58.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:49:20,778 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 11:49:20,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.37 ms. Allocated memory is still 144.7 MB. Free memory was 102.0 MB in the beginning and 92.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:49:20,780 INFO L168 Benchmark]: Boogie Preprocessor took 124.76 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 92.8 MB in the beginning and 181.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:49:20,781 INFO L168 Benchmark]: RCFGBuilder took 244.22 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 168.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:49:20,782 INFO L168 Benchmark]: TraceAbstraction took 1824.51 ms. Allocated memory is still 202.4 MB. Free memory was 168.9 MB in the beginning and 101.5 MB in the end (delta: 67.5 MB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:49:20,786 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 144.7 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 237.37 ms. Allocated memory is still 144.7 MB. Free memory was 102.0 MB in the beginning and 92.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.76 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 92.8 MB in the beginning and 181.5 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 244.22 ms. Allocated memory is still 202.4 MB. Free memory was 181.5 MB in the beginning and 168.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1824.51 ms. Allocated memory is still 202.4 MB. Free memory was 168.9 MB in the beginning and 101.5 MB in the end (delta: 67.5 MB). Peak memory consumption was 67.5 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: [L11] unsigned int x = 0; [L12] unsigned int y = 1; VAL [x=0, y=1] [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 VAL [x=1, y=2] [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 VAL [x=2, y=4] [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 VAL [x=3, y=8] [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 VAL [x=4, y=16] [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 VAL [x=5, y=32] [L14] COND TRUE x < 6 [L15] x++ [L16] y *= 2 VAL [x=6, y=64] [L14] COND FALSE !(x < 6) VAL [x=6, y=64] [L19] CALL __VERIFIER_assert(x != 6) 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, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 0 SDslu, 94 SDs, 0 SdLazy, 57 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 1271 SizeOfPredicates, 3 NumberOfNonLiveVariables, 97 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 0/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...