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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:01:15,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:01:15,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:01:15,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:01:15,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:01:15,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:01:15,108 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:01:15,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:01:15,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:01:15,126 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:01:15,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:01:15,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:01:15,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:01:15,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:01:15,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:01:15,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:01:15,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:01:15,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:01:15,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:01:15,148 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:01:15,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:01:15,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:01:15,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:01:15,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:01:15,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-15 03:01:15,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:01:15,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:01:15,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:01:15,176 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 03:01:15,205 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:01:15,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:01:15,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:01:15,214 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:01:15,214 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:01:15,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:01:15,215 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:01:15,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:01:15,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:01:15,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:01:15,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:01:15,216 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:01:15,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:01:15,216 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:01:15,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:01:15,217 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:01:15,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:01:15,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:01:15,219 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:01:15,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:01:15,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:01:15,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:01:15,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:01:15,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:01:15,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:01:15,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:01:15,221 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:01:15,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:01:15,221 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:01:15,502 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:01:15,516 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:01:15,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:01:15,521 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:01:15,521 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:01:15,522 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-1.c [2019-10-15 03:01:15,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/388e6d394/19b1b5e0697640158f58fbe63087c5c1/FLAG896817473 [2019-10-15 03:01:15,980 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:01:15,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-1.c [2019-10-15 03:01:15,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/388e6d394/19b1b5e0697640158f58fbe63087c5c1/FLAG896817473 [2019-10-15 03:01:16,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/388e6d394/19b1b5e0697640158f58fbe63087c5c1 [2019-10-15 03:01:16,422 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:01:16,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:01:16,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:01:16,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:01:16,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:01:16,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:01:16" (1/1) ... [2019-10-15 03:01:16,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17644812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:16, skipping insertion in model container [2019-10-15 03:01:16,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:01:16" (1/1) ... [2019-10-15 03:01:16,451 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:01:16,472 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:01:16,646 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:01:16,651 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:01:16,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:01:16,682 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:01:16,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:16 WrapperNode [2019-10-15 03:01:16,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:01:16,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:01:16,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:01:16,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:01:16,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:16" (1/1) ... [2019-10-15 03:01:16,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:16" (1/1) ... [2019-10-15 03:01:16,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:16" (1/1) ... [2019-10-15 03:01:16,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:16" (1/1) ... [2019-10-15 03:01:16,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:16" (1/1) ... [2019-10-15 03:01:16,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:16" (1/1) ... [2019-10-15 03:01:16,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:16" (1/1) ... [2019-10-15 03:01:16,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:01:16,806 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:01:16,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:01:16,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:01:16,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:16" (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 03:01:16,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:01:16,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:01:16,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 03:01:16,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:01:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:01:16,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:01:16,858 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:01:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:01:16,859 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:01:17,020 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:01:17,020 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:01:17,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:01:17 BoogieIcfgContainer [2019-10-15 03:01:17,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:01:17,023 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:01:17,023 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:01:17,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:01:17,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:01:16" (1/3) ... [2019-10-15 03:01:17,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d04cbef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:01:17, skipping insertion in model container [2019-10-15 03:01:17,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:01:16" (2/3) ... [2019-10-15 03:01:17,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d04cbef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:01:17, skipping insertion in model container [2019-10-15 03:01:17,027 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:01:17" (3/3) ... [2019-10-15 03:01:17,029 INFO L109 eAbstractionObserver]: Analyzing ICFG underapprox_2-1.c [2019-10-15 03:01:17,037 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:01:17,043 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:01:17,053 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:01:17,074 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:01:17,074 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:01:17,074 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:01:17,074 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:01:17,075 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:01:17,075 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:01:17,075 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:01:17,075 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:01:17,090 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2019-10-15 03:01:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:01:17,095 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:01:17,096 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:01:17,097 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:01:17,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:01:17,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1869232855, now seen corresponding path program 1 times [2019-10-15 03:01:17,109 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:01:17,110 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645210559] [2019-10-15 03:01:17,110 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:01:17,110 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:01:17,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:01:17,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:01:17,351 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 03:01:17,352 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645210559] [2019-10-15 03:01:17,354 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:01:17,354 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 03:01:17,354 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848892221] [2019-10-15 03:01:17,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 03:01:17,359 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:01:17,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 03:01:17,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:01:17,378 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 5 states. [2019-10-15 03:01:17,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:01:17,425 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-10-15 03:01:17,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:01:17,428 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-15 03:01:17,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:01:17,436 INFO L225 Difference]: With dead ends: 29 [2019-10-15 03:01:17,437 INFO L226 Difference]: Without dead ends: 12 [2019-10-15 03:01:17,440 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 03:01:17,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-10-15 03:01:17,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-10-15 03:01:17,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-10-15 03:01:17,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-10-15 03:01:17,489 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2019-10-15 03:01:17,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:01:17,489 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-10-15 03:01:17,490 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 03:01:17,490 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-10-15 03:01:17,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 03:01:17,492 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:01:17,493 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:01:17,494 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:01:17,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:01:17,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1455464170, now seen corresponding path program 1 times [2019-10-15 03:01:17,496 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:01:17,497 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736514165] [2019-10-15 03:01:17,498 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:01:17,498 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:01:17,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:01:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:01:17,655 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 03:01:17,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736514165] [2019-10-15 03:01:17,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345569060] [2019-10-15 03:01:17,657 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 03:01:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:01:17,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 03:01:17,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:01:17,776 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 03:01:17,777 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:01:17,843 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 03:01:17,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1240981218] [2019-10-15 03:01:17,869 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-15 03:01:17,869 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:01:17,877 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:01:17,886 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:01:17,887 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:01:17,952 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:01:18,192 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-15 03:01:18,230 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:01:18,233 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:01:18,417 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 03:01:18,418 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 6, 6] total 14 [2019-10-15 03:01:18,418 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354595355] [2019-10-15 03:01:18,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-15 03:01:18,421 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:01:18,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-15 03:01:18,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:01:18,422 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 14 states. [2019-10-15 03:01:18,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:01:18,646 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-10-15 03:01:18,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-15 03:01:18,646 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 11 [2019-10-15 03:01:18,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:01:18,647 INFO L225 Difference]: With dead ends: 23 [2019-10-15 03:01:18,647 INFO L226 Difference]: Without dead ends: 15 [2019-10-15 03:01:18,649 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:01:18,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-15 03:01:18,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-15 03:01:18,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-15 03:01:18,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2019-10-15 03:01:18,654 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2019-10-15 03:01:18,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:01:18,654 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2019-10-15 03:01:18,654 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-15 03:01:18,654 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2019-10-15 03:01:18,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-15 03:01:18,655 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:01:18,655 INFO L380 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:01:18,858 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:01:18,859 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:01:18,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:01:18,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1007933545, now seen corresponding path program 2 times [2019-10-15 03:01:18,859 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:01:18,860 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705854326] [2019-10-15 03:01:18,860 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:01:18,860 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:01:18,860 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:01:18,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:01:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:01:18,988 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705854326] [2019-10-15 03:01:18,989 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638548912] [2019-10-15 03:01:18,989 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 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 03:01:19,030 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-15 03:01:19,031 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 03:01:19,032 INFO L256 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-15 03:01:19,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:01:19,059 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:01:19,059 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:01:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:01:19,204 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [334314942] [2019-10-15 03:01:19,206 INFO L162 IcfgInterpreter]: Started Sifa with 11 locations of interest [2019-10-15 03:01:19,206 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:01:19,206 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:01:19,207 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:01:19,207 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:01:19,222 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:01:19,315 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 6 for LOIs [2019-10-15 03:01:19,337 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:01:19,340 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:01:19,621 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-15 03:01:19,621 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9, 6] total 20 [2019-10-15 03:01:19,622 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676483598] [2019-10-15 03:01:19,623 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-15 03:01:19,623 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:01:19,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-15 03:01:19,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2019-10-15 03:01:19,624 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 20 states. [2019-10-15 03:01:20,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:01:20,218 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2019-10-15 03:01:20,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-15 03:01:20,225 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 14 [2019-10-15 03:01:20,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:01:20,226 INFO L225 Difference]: With dead ends: 29 [2019-10-15 03:01:20,226 INFO L226 Difference]: Without dead ends: 21 [2019-10-15 03:01:20,227 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=159, Invalid=597, Unknown=0, NotChecked=0, Total=756 [2019-10-15 03:01:20,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-15 03:01:20,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-10-15 03:01:20,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-15 03:01:20,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-10-15 03:01:20,233 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2019-10-15 03:01:20,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:01:20,233 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-10-15 03:01:20,233 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-15 03:01:20,233 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-10-15 03:01:20,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 03:01:20,234 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:01:20,234 INFO L380 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:01:20,438 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:01:20,438 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:01:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:01:20,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1779402249, now seen corresponding path program 3 times [2019-10-15 03:01:20,447 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:01:20,447 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836273270] [2019-10-15 03:01:20,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:01:20,447 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:01:20,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:01:20,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-15 03:01:20,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-15 03:01:20,494 INFO L168 tionRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-10-15 03:01:20,494 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-15 03:01:20,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:01:20 BoogieIcfgContainer [2019-10-15 03:01:20,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 03:01:20,523 INFO L168 Benchmark]: Toolchain (without parser) took 4098.45 ms. Allocated memory was 138.4 MB in the beginning and 245.9 MB in the end (delta: 107.5 MB). Free memory was 103.6 MB in the beginning and 199.7 MB in the end (delta: -96.1 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-10-15 03:01:20,524 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-10-15 03:01:20,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.14 ms. Allocated memory is still 138.4 MB. Free memory was 103.1 MB in the beginning and 94.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2019-10-15 03:01:20,526 INFO L168 Benchmark]: Boogie Preprocessor took 122.05 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 94.0 MB in the beginning and 181.6 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2019-10-15 03:01:20,527 INFO L168 Benchmark]: RCFGBuilder took 215.34 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 170.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-10-15 03:01:20,528 INFO L168 Benchmark]: TraceAbstraction took 3497.75 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 170.0 MB in the beginning and 199.7 MB in the end (delta: -29.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2019-10-15 03:01:20,531 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.14 ms. Allocated memory is still 138.4 MB. Free memory was 103.1 MB in the beginning and 94.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.05 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 94.0 MB in the beginning and 181.6 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 215.34 ms. Allocated memory is still 202.9 MB. Free memory was 181.6 MB in the beginning and 170.7 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3497.75 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 170.0 MB in the beginning and 199.7 MB in the end (delta: -29.6 MB). Peak memory consumption was 13.4 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. Result: UNSAFE, OverallTime: 3.4s, OverallIterations: 4, TraceHistogramMax: 6, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 32 SDslu, 140 SDs, 0 SdLazy, 163 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 109 GetRequests, 54 SyntacticMatches, 9 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=3, 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, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 3048 SizeOfPredicates, 0 NumberOfNonLiveVariables, 73 ConjunctsInSsa, 28 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 499, ICFG_INTERPRETER_ENTERED_PROCEDURES: 8, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 42, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 20, TOOLS_POST_TIME[ms]: 30, TOOLS_POST_CALL_APPLICATIONS: 10, TOOLS_POST_CALL_TIME[ms]: 21, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME[ms]: 1, TOOLS_QUANTIFIERELIM_APPLICATIONS: 34, TOOLS_QUANTIFIERELIM_TIME[ms]: 41, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 14, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 48, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 36, DOMAIN_JOIN_TIME[ms]: 243, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 4, DOMAIN_WIDEN_TIME[ms]: 85, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME[ms]: 23, DOMAIN_ISBOTTOM_APPLICATIONS: 2, DOMAIN_ISBOTTOM_TIME[ms]: 2, LOOP_SUMMARIZER_APPLICATIONS: 2, LOOP_SUMMARIZER_CACHE_MISSES: 2, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 248, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 246, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME[ms]: 11, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 11, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 6, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 23, DAG_COMPRESSION_PROCESSED_NODES: 114, DAG_COMPRESSION_RETAINED_NODES: 84, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...