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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/array-tiling/mbpr4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:30:27,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:30:27,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:30:27,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:30:27,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:30:27,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:30:27,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:30:27,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:30:27,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:30:27,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:30:27,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:30:27,131 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:30:27,131 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:30:27,132 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:30:27,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:30:27,134 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:30:27,135 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:30:27,136 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:30:27,137 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:30:27,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:30:27,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:30:27,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:30:27,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:30:27,143 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:30:27,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 16:30:27,146 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 16:30:27,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 16:30:27,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 16:30:27,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 16:30:27,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 16:30:27,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:30:27,149 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:30:27,150 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:30:27,151 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:30:27,152 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:30:27,152 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:30:27,153 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:30:27,153 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:30:27,153 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:30:27,154 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:30:27,155 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:30:27,156 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-10-02 16:30:27,170 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:30:27,170 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:30:27,171 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:30:27,171 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:30:27,172 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:30:27,172 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:30:27,172 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:30:27,172 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:30:27,173 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:30:27,173 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:30:27,174 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:30:27,174 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:30:27,174 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:30:27,174 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:30:27,174 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:30:27,175 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:30:27,175 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:30:27,175 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:30:27,175 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:30:27,176 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:30:27,176 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:30:27,176 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:30:27,176 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:30:27,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:30:27,177 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:30:27,177 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:30:27,177 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:30:27,177 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:30:27,177 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:30:27,178 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:30:27,206 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:30:27,219 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:30:27,222 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:30:27,224 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:30:27,224 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:30:27,225 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/mbpr4.c [2019-10-02 16:30:27,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7bdbdd79/07d86f8f53164db8879f6a28d1576870/FLAG529656fe1 [2019-10-02 16:30:27,742 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:30:27,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/mbpr4.c [2019-10-02 16:30:27,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7bdbdd79/07d86f8f53164db8879f6a28d1576870/FLAG529656fe1 [2019-10-02 16:30:28,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7bdbdd79/07d86f8f53164db8879f6a28d1576870 [2019-10-02 16:30:28,152 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:30:28,153 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:30:28,156 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:28,156 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:30:28,162 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:30:28,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:28" (1/1) ... [2019-10-02 16:30:28,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a8eca5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:28, skipping insertion in model container [2019-10-02 16:30:28,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:30:28" (1/1) ... [2019-10-02 16:30:28,175 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:30:28,209 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:30:28,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:28,519 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:30:28,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:30:28,695 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:30:28,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:28 WrapperNode [2019-10-02 16:30:28,696 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:30:28,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:30:28,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:30:28,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:30:28,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:28" (1/1) ... [2019-10-02 16:30:28,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:28" (1/1) ... [2019-10-02 16:30:28,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:28" (1/1) ... [2019-10-02 16:30:28,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:28" (1/1) ... [2019-10-02 16:30:28,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:28" (1/1) ... [2019-10-02 16:30:28,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:28" (1/1) ... [2019-10-02 16:30:28,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:28" (1/1) ... [2019-10-02 16:30:28,756 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:30:28,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:30:28,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:30:28,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:30:28,758 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:28" (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 [2019-10-02 16:30:28,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:30:28,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:30:28,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:30:28,822 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:30:28,822 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:30:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-02 16:30:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:30:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:30:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:30:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:30:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:30:28,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:30:28,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:30:28,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:30:28,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:30:29,228 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:30:29,228 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-10-02 16:30:29,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:29 BoogieIcfgContainer [2019-10-02 16:30:29,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:30:29,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:30:29,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:30:29,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:30:29,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:30:28" (1/3) ... [2019-10-02 16:30:29,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420a70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:29, skipping insertion in model container [2019-10-02 16:30:29,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:30:28" (2/3) ... [2019-10-02 16:30:29,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@420a70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:30:29, skipping insertion in model container [2019-10-02 16:30:29,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:30:29" (3/3) ... [2019-10-02 16:30:29,238 INFO L109 eAbstractionObserver]: Analyzing ICFG mbpr4.c [2019-10-02 16:30:29,248 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:30:29,257 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:30:29,274 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:30:29,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:30:29,299 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:30:29,299 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:30:29,299 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:30:29,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:30:29,300 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:30:29,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:30:29,300 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:30:29,313 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2019-10-02 16:30:29,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-02 16:30:29,324 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:29,326 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:29,328 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:29,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:29,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1961398023, now seen corresponding path program 1 times [2019-10-02 16:30:29,336 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:29,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:29,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:29,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:29,397 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:29,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:29,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:29,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:29,528 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:30:29,528 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:29,533 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:30:29,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:30:29,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:30:29,546 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2019-10-02 16:30:29,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:29,562 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2019-10-02 16:30:29,563 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:30:29,564 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2019-10-02 16:30:29,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:29,574 INFO L225 Difference]: With dead ends: 45 [2019-10-02 16:30:29,574 INFO L226 Difference]: Without dead ends: 39 [2019-10-02 16:30:29,576 INFO L640 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 [2019-10-02 16:30:29,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-02 16:30:29,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-10-02 16:30:29,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-02 16:30:29,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2019-10-02 16:30:29,617 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 22 [2019-10-02 16:30:29,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:29,618 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2019-10-02 16:30:29,618 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:30:29,619 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2019-10-02 16:30:29,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-02 16:30:29,620 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:29,620 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:29,621 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:29,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:29,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1084797805, now seen corresponding path program 1 times [2019-10-02 16:30:29,621 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:29,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:29,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:29,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:29,624 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:29,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:29,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:29,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-02 16:30:29,752 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:29,757 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-02 16:30:29,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-02 16:30:29,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-02 16:30:29,758 INFO L87 Difference]: Start difference. First operand 39 states and 48 transitions. Second operand 5 states. [2019-10-02 16:30:29,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:29,843 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2019-10-02 16:30:29,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 16:30:29,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-10-02 16:30:29,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:29,845 INFO L225 Difference]: With dead ends: 45 [2019-10-02 16:30:29,845 INFO L226 Difference]: Without dead ends: 45 [2019-10-02 16:30:29,846 INFO L640 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 [2019-10-02 16:30:29,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-02 16:30:29,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2019-10-02 16:30:29,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-02 16:30:29,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2019-10-02 16:30:29,855 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 22 [2019-10-02 16:30:29,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:29,856 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2019-10-02 16:30:29,856 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-02 16:30:29,857 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2019-10-02 16:30:29,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-02 16:30:29,858 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:29,858 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:29,859 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:29,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:29,861 INFO L82 PathProgramCache]: Analyzing trace with hash -1082950763, now seen corresponding path program 1 times [2019-10-02 16:30:29,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:29,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:29,865 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:29,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:29,865 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:30,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:30:30,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 16:30:30,131 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:30,132 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 16:30:30,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 16:30:30,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:30,134 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2019-10-02 16:30:30,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:30,293 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2019-10-02 16:30:30,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 16:30:30,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2019-10-02 16:30:30,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:30,299 INFO L225 Difference]: With dead ends: 48 [2019-10-02 16:30:30,300 INFO L226 Difference]: Without dead ends: 48 [2019-10-02 16:30:30,300 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 16:30:30,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-02 16:30:30,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2019-10-02 16:30:30,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-02 16:30:30,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2019-10-02 16:30:30,318 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 22 [2019-10-02 16:30:30,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:30,318 INFO L475 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2019-10-02 16:30:30,318 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 16:30:30,319 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2019-10-02 16:30:30,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-02 16:30:30,323 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:30:30,323 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:30:30,323 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:30:30,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:30,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1675538566, now seen corresponding path program 1 times [2019-10-02 16:30:30,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:30:30,329 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:30,329 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:30:30,330 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:30:30,330 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:30:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:30:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 16:30:30,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:30:30,543 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:30:30,544 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2019-10-02 16:30:30,546 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [8], [12], [18], [20], [23], [27], [29], [33], [39], [54], [60], [75], [81], [96], [104], [109], [124], [127], [129], [135], [136], [137], [139] [2019-10-02 16:30:30,591 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:30:30,592 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:30:30,738 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:30:30,740 INFO L272 AbstractInterpreter]: Visited 7 different actions 7 times. Never merged. Never widened. Performed 22 root evaluator evaluations with a maximum evaluation depth of 2. Performed 22 inverse root evaluator evaluations with a maximum inverse evaluation depth of 2. Never found a fixpoint. Largest state had 30 variables. [2019-10-02 16:30:30,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:30:30,745 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:30:30,787 INFO L227 lantSequenceWeakener]: Weakened 5 states. On average, predicates are now at 96.67% of their original sizes. [2019-10-02 16:30:30,787 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:30:30,792 INFO L420 sIntCurrentIteration]: We unified 25 AI predicates to 25 [2019-10-02 16:30:30,793 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:30:30,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:30:30,794 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-02 16:30:30,794 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:30:30,794 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:30:30,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:30:30,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:30,795 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 3 states. [2019-10-02 16:30:30,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:30:30,797 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2019-10-02 16:30:30,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:30:30,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-10-02 16:30:30,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:30:30,798 INFO L225 Difference]: With dead ends: 7 [2019-10-02 16:30:30,798 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:30:30,799 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:30:30,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:30:30,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:30:30,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:30:30,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:30:30,800 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2019-10-02 16:30:30,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:30:30,800 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:30:30,800 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:30:30,802 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:30:30,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:30:30,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:30:30 BoogieIcfgContainer [2019-10-02 16:30:30,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:30:30,815 INFO L168 Benchmark]: Toolchain (without parser) took 2659.53 ms. Allocated memory was 138.4 MB in the beginning and 220.7 MB in the end (delta: 82.3 MB). Free memory was 85.5 MB in the beginning and 181.1 MB in the end (delta: -95.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-02 16:30:30,816 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:30:30,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 540.63 ms. Allocated memory was 138.4 MB in the beginning and 199.2 MB in the end (delta: 60.8 MB). Free memory was 85.3 MB in the beginning and 174.9 MB in the end (delta: -89.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:30,821 INFO L168 Benchmark]: Boogie Preprocessor took 59.61 ms. Allocated memory is still 199.2 MB. Free memory was 174.9 MB in the beginning and 172.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:30,822 INFO L168 Benchmark]: RCFGBuilder took 472.83 ms. Allocated memory is still 199.2 MB. Free memory was 172.9 MB in the beginning and 150.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2019-10-02 16:30:30,824 INFO L168 Benchmark]: TraceAbstraction took 1580.21 ms. Allocated memory was 199.2 MB in the beginning and 220.7 MB in the end (delta: 21.5 MB). Free memory was 150.8 MB in the beginning and 181.1 MB in the end (delta: -30.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-02 16:30:30,834 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 138.4 MB. Free memory was 104.3 MB in the beginning and 104.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 540.63 ms. Allocated memory was 138.4 MB in the beginning and 199.2 MB in the end (delta: 60.8 MB). Free memory was 85.3 MB in the beginning and 174.9 MB in the end (delta: -89.5 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 59.61 ms. Allocated memory is still 199.2 MB. Free memory was 174.9 MB in the beginning and 172.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 472.83 ms. Allocated memory is still 199.2 MB. Free memory was 172.9 MB in the beginning and 150.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1580.21 ms. Allocated memory was 199.2 MB in the beginning and 220.7 MB in the end (delta: 21.5 MB). Free memory was 150.8 MB in the beginning and 181.1 MB in the end (delta: -30.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 45 locations, 1 error locations. SAFE Result, 1.5s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 142 SDtfs, 58 SDslu, 144 SDs, 0 SdLazy, 64 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.94 AbsIntWeakeningRatio, 1.04 AbsIntAvgWeakeningVarsNumRemoved, 0.64 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 3828 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 0/1 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...