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-examples/standard_copy7_ground-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 16:29:54,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 16:29:54,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 16:29:54,103 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 16:29:54,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 16:29:54,104 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 16:29:54,106 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 16:29:54,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 16:29:54,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 16:29:54,110 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 16:29:54,111 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 16:29:54,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 16:29:54,112 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 16:29:54,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 16:29:54,114 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 16:29:54,115 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 16:29:54,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 16:29:54,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 16:29:54,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 16:29:54,120 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 16:29:54,122 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 16:29:54,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 16:29:54,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 16:29:54,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 16:29:54,127 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 16:29:54,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 16:29:54,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 16:29:54,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 16:29:54,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 16:29:54,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 16:29:54,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 16:29:54,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 16:29:54,134 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 16:29:54,134 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 16:29:54,135 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 16:29:54,136 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 16:29:54,137 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 16:29:54,154 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 16:29:54,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 16:29:54,155 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 16:29:54,155 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 16:29:54,156 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 16:29:54,156 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 16:29:54,157 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 16:29:54,157 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 16:29:54,157 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 16:29:54,157 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 16:29:54,158 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 16:29:54,159 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 16:29:54,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 16:29:54,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 16:29:54,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 16:29:54,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 16:29:54,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 16:29:54,160 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 16:29:54,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 16:29:54,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 16:29:54,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 16:29:54,161 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 16:29:54,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 16:29:54,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 16:29:54,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 16:29:54,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 16:29:54,162 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 16:29:54,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 16:29:54,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 16:29:54,162 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 16:29:54,191 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 16:29:54,203 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 16:29:54,207 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 16:29:54,208 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 16:29:54,208 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 16:29:54,209 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_copy7_ground-2.i [2019-10-02 16:29:54,269 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c68be89a/ac742ee2df5a49b79be44f4e96833742/FLAGa26ae9f61 [2019-10-02 16:29:54,740 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 16:29:54,740 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-examples/standard_copy7_ground-2.i [2019-10-02 16:29:54,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c68be89a/ac742ee2df5a49b79be44f4e96833742/FLAGa26ae9f61 [2019-10-02 16:29:55,108 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c68be89a/ac742ee2df5a49b79be44f4e96833742 [2019-10-02 16:29:55,117 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 16:29:55,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 16:29:55,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:55,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 16:29:55,122 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 16:29:55,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:55" (1/1) ... [2019-10-02 16:29:55,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2be43138 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55, skipping insertion in model container [2019-10-02 16:29:55,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 04:29:55" (1/1) ... [2019-10-02 16:29:55,137 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 16:29:55,159 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 16:29:55,335 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:55,341 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 16:29:55,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 16:29:55,487 INFO L192 MainTranslator]: Completed translation [2019-10-02 16:29:55,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55 WrapperNode [2019-10-02 16:29:55,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 16:29:55,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 16:29:55,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 16:29:55,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 16:29:55,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (1/1) ... [2019-10-02 16:29:55,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (1/1) ... [2019-10-02 16:29:55,511 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (1/1) ... [2019-10-02 16:29:55,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (1/1) ... [2019-10-02 16:29:55,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (1/1) ... [2019-10-02 16:29:55,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (1/1) ... [2019-10-02 16:29:55,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (1/1) ... [2019-10-02 16:29:55,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 16:29:55,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 16:29:55,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 16:29:55,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 16:29:55,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (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 16:29:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 16:29:55,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 16:29:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-02 16:29:55,608 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 16:29:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 16:29:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-02 16:29:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 16:29:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 16:29:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-02 16:29:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 16:29:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 16:29:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 16:29:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 16:29:55,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 16:29:56,030 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 16:29:56,031 INFO L283 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-02 16:29:56,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:56 BoogieIcfgContainer [2019-10-02 16:29:56,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 16:29:56,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 16:29:56,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 16:29:56,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 16:29:56,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 04:29:55" (1/3) ... [2019-10-02 16:29:56,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1191e1c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:56, skipping insertion in model container [2019-10-02 16:29:56,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 04:29:55" (2/3) ... [2019-10-02 16:29:56,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1191e1c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 04:29:56, skipping insertion in model container [2019-10-02 16:29:56,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 04:29:56" (3/3) ... [2019-10-02 16:29:56,040 INFO L109 eAbstractionObserver]: Analyzing ICFG standard_copy7_ground-2.i [2019-10-02 16:29:56,049 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 16:29:56,057 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 16:29:56,074 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 16:29:56,101 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 16:29:56,102 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 16:29:56,102 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 16:29:56,102 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 16:29:56,102 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 16:29:56,102 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 16:29:56,103 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 16:29:56,103 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 16:29:56,117 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2019-10-02 16:29:56,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-02 16:29:56,127 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:56,128 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, 1] [2019-10-02 16:29:56,130 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:56,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:56,135 INFO L82 PathProgramCache]: Analyzing trace with hash -2029657296, now seen corresponding path program 1 times [2019-10-02 16:29:56,137 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:56,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:56,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:56,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:56,183 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:56,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:56,286 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 16:29:56,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:56,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 16:29:56,289 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:56,294 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:56,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:56,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:56,313 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2019-10-02 16:29:56,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:56,332 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2019-10-02 16:29:56,332 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:56,334 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2019-10-02 16:29:56,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:56,344 INFO L225 Difference]: With dead ends: 45 [2019-10-02 16:29:56,344 INFO L226 Difference]: Without dead ends: 40 [2019-10-02 16:29:56,346 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 16:29:56,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-02 16:29:56,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2019-10-02 16:29:56,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-10-02 16:29:56,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2019-10-02 16:29:56,388 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2019-10-02 16:29:56,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:56,389 INFO L475 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2019-10-02 16:29:56,389 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:56,389 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2019-10-02 16:29:56,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-02 16:29:56,390 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:56,390 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, 1] [2019-10-02 16:29:56,391 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:56,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:56,391 INFO L82 PathProgramCache]: Analyzing trace with hash -2073025378, now seen corresponding path program 1 times [2019-10-02 16:29:56,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:56,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:56,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:56,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:56,395 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:56,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:56,471 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 16:29:56,472 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:56,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:56,472 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:56,474 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:56,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:56,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:56,475 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 3 states. [2019-10-02 16:29:56,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:56,507 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2019-10-02 16:29:56,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:56,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-10-02 16:29:56,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:56,509 INFO L225 Difference]: With dead ends: 42 [2019-10-02 16:29:56,509 INFO L226 Difference]: Without dead ends: 42 [2019-10-02 16:29:56,510 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 16:29:56,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-02 16:29:56,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2019-10-02 16:29:56,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-02 16:29:56,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2019-10-02 16:29:56,517 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 27 [2019-10-02 16:29:56,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:56,518 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2019-10-02 16:29:56,518 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:56,518 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2019-10-02 16:29:56,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-02 16:29:56,519 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:56,520 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, 1, 1, 1] [2019-10-02 16:29:56,520 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:56,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:56,520 INFO L82 PathProgramCache]: Analyzing trace with hash -55785284, now seen corresponding path program 1 times [2019-10-02 16:29:56,521 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:56,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:56,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:56,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:56,523 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:56,584 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 16:29:56,584 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 16:29:56,584 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 16:29:56,585 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:56,585 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 16:29:56,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 16:29:56,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 16:29:56,586 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 3 states. [2019-10-02 16:29:56,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:56,696 INFO L93 Difference]: Finished difference Result 55 states and 63 transitions. [2019-10-02 16:29:56,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 16:29:56,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2019-10-02 16:29:56,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:56,698 INFO L225 Difference]: With dead ends: 55 [2019-10-02 16:29:56,698 INFO L226 Difference]: Without dead ends: 55 [2019-10-02 16:29:56,699 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 16:29:56,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-02 16:29:56,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2019-10-02 16:29:56,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-02 16:29:56,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2019-10-02 16:29:56,706 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 29 [2019-10-02 16:29:56,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:56,707 INFO L475 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2019-10-02 16:29:56,707 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 16:29:56,707 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2019-10-02 16:29:56,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-02 16:29:56,708 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 16:29:56,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 16:29:56,709 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 16:29:56,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:56,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1132383374, now seen corresponding path program 1 times [2019-10-02 16:29:56,709 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 16:29:56,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:56,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 16:29:56,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 16:29:56,712 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 16:29:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 16:29:56,815 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-02 16:29:56,816 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 16:29:56,816 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 16:29:56,817 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 44 with the following transitions: [2019-10-02 16:29:56,819 INFO L207 CegarAbsIntRunner]: [0], [1], [5], [11], [13], [15], [19], [25], [27], [29], [33], [39], [41], [43], [47], [53], [55], [57], [61], [67], [69], [71], [75], [81], [83], [85], [89], [95], [97], [99], [103], [109], [111], [113], [117], [125], [135], [138], [140], [146], [147], [148], [150] [2019-10-02 16:29:56,862 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 16:29:56,863 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 16:29:56,931 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 16:29:56,933 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 15 root evaluator evaluations with a maximum evaluation depth of 0. Performed 15 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 49 variables. [2019-10-02 16:29:56,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 16:29:56,940 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 16:29:56,988 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-02 16:29:56,989 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 16:29:56,992 INFO L420 sIntCurrentIteration]: We unified 42 AI predicates to 42 [2019-10-02 16:29:56,992 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 16:29:56,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 16:29:56,993 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 4 [2019-10-02 16:29:56,993 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 16:29:56,994 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 16:29:56,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 16:29:56,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 16:29:56,995 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 2 states. [2019-10-02 16:29:56,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 16:29:56,996 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-10-02 16:29:56,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 16:29:56,996 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 43 [2019-10-02 16:29:56,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 16:29:56,996 INFO L225 Difference]: With dead ends: 6 [2019-10-02 16:29:56,997 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 16:29:56,997 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 42 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 16:29:56,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 16:29:56,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 16:29:56,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 16:29:56,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 16:29:56,998 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2019-10-02 16:29:56,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 16:29:56,999 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 16:29:56,999 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 16:29:56,999 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 16:29:56,999 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 16:29:57,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 04:29:57 BoogieIcfgContainer [2019-10-02 16:29:57,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 16:29:57,006 INFO L168 Benchmark]: Toolchain (without parser) took 1887.26 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 86.8 MB in the beginning and 92.6 MB in the end (delta: -5.7 MB). Peak memory consumption was 55.6 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:57,007 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 16:29:57,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.68 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 86.4 MB in the beginning and 179.0 MB in the end (delta: -92.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:57,010 INFO L168 Benchmark]: Boogie Preprocessor took 56.62 ms. Allocated memory is still 200.8 MB. Free memory was 179.0 MB in the beginning and 176.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:57,011 INFO L168 Benchmark]: RCFGBuilder took 485.64 ms. Allocated memory is still 200.8 MB. Free memory was 176.6 MB in the beginning and 154.3 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:57,012 INFO L168 Benchmark]: TraceAbstraction took 970.25 ms. Allocated memory is still 200.8 MB. Free memory was 154.3 MB in the beginning and 92.6 MB in the end (delta: 61.7 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. [2019-10-02 16:29:57,017 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 105.4 MB in the beginning and 105.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 370.68 ms. Allocated memory was 139.5 MB in the beginning and 200.8 MB in the end (delta: 61.3 MB). Free memory was 86.4 MB in the beginning and 179.0 MB in the end (delta: -92.6 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.62 ms. Allocated memory is still 200.8 MB. Free memory was 179.0 MB in the beginning and 176.6 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 485.64 ms. Allocated memory is still 200.8 MB. Free memory was 176.6 MB in the beginning and 154.3 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 970.25 ms. Allocated memory is still 200.8 MB. Free memory was 154.3 MB in the beginning and 92.6 MB in the end (delta: 61.7 MB). Peak memory consumption was 61.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: 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, 0.9s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 138 SDtfs, 8 SDslu, 64 SDs, 0 SdLazy, 40 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.8988095238095238 AbsIntWeakeningRatio, 1.0952380952380953 AbsIntAvgWeakeningVarsNumRemoved, 0.14285714285714285 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4260 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 8/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...