java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/SifaC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --sifa.abstract.domain IntervalDomain -i ../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-06 09:07:47,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-06 09:07:47,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-06 09:07:47,518 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-06 09:07:47,518 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-06 09:07:47,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-06 09:07:47,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-06 09:07:47,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-06 09:07:47,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-06 09:07:47,525 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-06 09:07:47,526 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-06 09:07:47,527 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-06 09:07:47,528 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-06 09:07:47,529 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-06 09:07:47,530 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-06 09:07:47,531 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-06 09:07:47,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-06 09:07:47,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-06 09:07:47,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-06 09:07:47,537 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-06 09:07:47,538 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-06 09:07:47,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-06 09:07:47,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-06 09:07:47,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-06 09:07:47,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-06 09:07:47,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-06 09:07:47,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-06 09:07:47,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-06 09:07:47,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-06 09:07:47,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-06 09:07:47,557 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-06 09:07:47,558 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-06 09:07:47,558 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-06 09:07:47,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-06 09:07:47,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-06 09:07:47,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-06 09:07:47,564 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 [2019-09-06 09:07:47,587 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-06 09:07:47,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-06 09:07:47,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-06 09:07:47,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-06 09:07:47,591 INFO L138 SettingsManager]: * Use SBE=true [2019-09-06 09:07:47,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-06 09:07:47,592 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-06 09:07:47,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-06 09:07:47,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-06 09:07:47,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-06 09:07:47,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-06 09:07:47,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-06 09:07:47,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-06 09:07:47,594 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-06 09:07:47,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-06 09:07:47,594 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-06 09:07:47,595 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-06 09:07:47,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-06 09:07:47,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-06 09:07:47,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-06 09:07:47,596 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-06 09:07:47,596 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-06 09:07:47,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-06 09:07:47,597 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-06 09:07:47,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-06 09:07:47,597 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-06 09:07:47,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-06 09:07:47,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-06 09:07:47,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2019-09-06 09:07:47,652 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-06 09:07:47,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-06 09:07:47,674 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-06 09:07:47,677 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-06 09:07:47,678 INFO L275 PluginConnector]: CDTParser initialized [2019-09-06 09:07:47,678 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2019-09-06 09:07:47,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c99c4d007/84664efde0d94087a0ee9943e2cfee6c/FLAG5a81d37f9 [2019-09-06 09:07:48,201 INFO L306 CDTParser]: Found 1 translation units. [2019-09-06 09:07:48,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007.c.i.p+nlh-reducer.c [2019-09-06 09:07:48,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c99c4d007/84664efde0d94087a0ee9943e2cfee6c/FLAG5a81d37f9 [2019-09-06 09:07:48,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c99c4d007/84664efde0d94087a0ee9943e2cfee6c [2019-09-06 09:07:48,530 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-06 09:07:48,533 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-06 09:07:48,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-06 09:07:48,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-06 09:07:48,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-06 09:07:48,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.09 09:07:48" (1/1) ... [2019-09-06 09:07:48,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@424c430 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 09:07:48, skipping insertion in model container [2019-09-06 09:07:48,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.09 09:07:48" (1/1) ... [2019-09-06 09:07:48,558 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-06 09:07:48,603 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-06 09:07:48,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-06 09:07:48,940 INFO L188 MainTranslator]: Completed pre-run [2019-09-06 09:07:49,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-06 09:07:49,155 INFO L192 MainTranslator]: Completed translation [2019-09-06 09:07:49,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 09:07:49 WrapperNode [2019-09-06 09:07:49,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-06 09:07:49,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-06 09:07:49,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-06 09:07:49,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-06 09:07:49,167 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 09:07:49" (1/1) ... [2019-09-06 09:07:49,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 09:07:49" (1/1) ... [2019-09-06 09:07:49,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 09:07:49" (1/1) ... [2019-09-06 09:07:49,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 09:07:49" (1/1) ... [2019-09-06 09:07:49,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 09:07:49" (1/1) ... [2019-09-06 09:07:49,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 09:07:49" (1/1) ... [2019-09-06 09:07:49,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 09:07:49" (1/1) ... [2019-09-06 09:07:49,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-06 09:07:49,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-06 09:07:49,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-06 09:07:49,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-06 09:07:49,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 09:07:49" (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 [2019-09-06 09:07:49,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-06 09:07:49,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-06 09:07:49,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-06 09:07:49,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-06 09:07:49,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-06 09:07:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-06 09:07:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-06 09:07:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-06 09:07:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-06 09:07:49,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-06 09:07:50,121 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-06 09:07:50,121 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-06 09:07:50,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.09 09:07:50 BoogieIcfgContainer [2019-09-06 09:07:50,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-06 09:07:50,123 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-09-06 09:07:50,123 INFO L271 PluginConnector]: Initializing Sifa... [2019-09-06 09:07:50,123 INFO L275 PluginConnector]: Sifa initialized [2019-09-06 09:07:50,125 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.09 09:07:50" (1/1) ... [2019-09-06 09:07:50,125 INFO L79 SifaObserver]: Intern domains=ExplicitValueDomain;IntervalDomain ♦ Abstract Domain=IntervalDomain ♦ Abstract when formula's dag size exceeds (negative numbers disable this limit)=-1 ♦ Fluid=SizeLimitFluid ♦ Max. Parallel Explicit Values=2 ♦ Max. Parallel Intervals=2 ♦ Loop Summarizer=FixpointLoopSummarizer ♦ Abstract when formula has more disjuncts than (negative numbers disable this limit)=8 ♦ Call Summarizer=ReUseSupersetCallSummarizer ♦ Xnf Conversion Technique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION ♦ Simplification Technique=NONE ♦ Intern Fluid=SizeLimitFluid [2019-09-06 09:07:50,149 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-09-06 09:07:50,149 INFO L169 IcfgInterpreter]: Building call graph [2019-09-06 09:07:50,160 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-09-06 09:07:50,170 INFO L179 IcfgInterpreter]: Starting interpretation [2019-09-06 09:07:50,172 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-09-06 09:07:50,237 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 10 for LOIs [2019-09-06 09:07:50,999 INFO L183 IcfgInterpreter]: Interpretation finished [2019-09-06 09:07:50,999 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-09-06 09:07:51,001 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 296#(and (<= |old(~__return_1121~0)| 0) (<= 66 main_~main__y~0) (<= ~__return_1121~0 0) (<= 100 main_~main__x~0) (<= 0 |old(~__return_1121~0)|) (<= 0 main_~__VERIFIER_assert__cond~0) (<= main_~__VERIFIER_assert__cond~0 0) (<= 0 ~__return_1121~0) (<= 0 ~__return_main~0) (<= main_~__tmp_1~0 0) (<= 0 main_~__tmp_1~0) (<= ~__return_main~0 0)) [2019-09-06 09:07:51,013 INFO L104 SifaObserver]: ✘ Some error locations might be reachable, see reported results. [2019-09-06 09:07:51,014 INFO L132 PluginConnector]: ------------------------ END Sifa---------------------------- [2019-09-06 09:07:51,017 INFO L168 Benchmark]: Toolchain (without parser) took 2484.48 ms. Allocated memory was 131.6 MB in the beginning and 220.7 MB in the end (delta: 89.1 MB). Free memory was 87.0 MB in the beginning and 69.9 MB in the end (delta: 17.1 MB). Peak memory consumption was 106.2 MB. Max. memory is 7.1 GB. [2019-09-06 09:07:51,018 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 131.6 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-06 09:07:51,019 INFO L168 Benchmark]: CACSL2BoogieTranslator took 621.34 ms. Allocated memory was 131.6 MB in the beginning and 199.8 MB in the end (delta: 68.2 MB). Free memory was 86.8 MB in the beginning and 172.0 MB in the end (delta: -85.2 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2019-09-06 09:07:51,020 INFO L168 Benchmark]: Boogie Preprocessor took 58.22 ms. Allocated memory is still 199.8 MB. Free memory was 172.0 MB in the beginning and 169.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-09-06 09:07:51,021 INFO L168 Benchmark]: RCFGBuilder took 907.46 ms. Allocated memory is still 199.8 MB. Free memory was 169.3 MB in the beginning and 106.7 MB in the end (delta: 62.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. [2019-09-06 09:07:51,022 INFO L168 Benchmark]: Sifa took 891.12 ms. Allocated memory was 199.8 MB in the beginning and 220.7 MB in the end (delta: 21.0 MB). Free memory was 106.7 MB in the beginning and 69.9 MB in the end (delta: 36.7 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. [2019-09-06 09:07:51,035 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 131.6 MB. Free memory was 105.9 MB in the beginning and 105.7 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 621.34 ms. Allocated memory was 131.6 MB in the beginning and 199.8 MB in the end (delta: 68.2 MB). Free memory was 86.8 MB in the beginning and 172.0 MB in the end (delta: -85.2 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.22 ms. Allocated memory is still 199.8 MB. Free memory was 172.0 MB in the beginning and 169.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 907.46 ms. Allocated memory is still 199.8 MB. Free memory was 169.3 MB in the beginning and 106.7 MB in the end (delta: 62.6 MB). Peak memory consumption was 62.6 MB. Max. memory is 7.1 GB. * Sifa took 891.12 ms. Allocated memory was 199.8 MB in the beginning and 220.7 MB in the end (delta: 21.0 MB). Free memory was 106.7 MB in the beginning and 69.9 MB in the end (delta: 36.7 MB). Peak memory consumption was 57.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.sifa: - StatisticsResult: Symbolic Interpretation with Fluid Abstractions OVERALL_TIME[ms]: 853, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 221, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 216, TOOLS_POST_TIME[ms]: 181, TOOLS_POST_CALL_APPLICATIONS: 2, TOOLS_POST_CALL_TIME[ms]: 16, TOOLS_POST_RETURN_APPLICATIONS: 1, TOOLS_POST_RETURN_TIME[ms]: 1, TOOLS_QUANTIFIERELIM_TIME[ms]: 138, FLUID_QUERY_TIME[ms]: 10, FLUID_QUERIES: 223, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 74, DOMAIN_JOIN_TIME[ms]: 107, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 3, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 3, DOMAIN_ISBOTTOM_APPLICATIONS: 72, DOMAIN_ISBOTTOM_TIME[ms]: 147, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 18, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 18, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 1, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 20, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 18, REGEX_TO_DAG_TIME[ms]: 9, DAG_COMPRESSION_TIME[ms]: 264, DAG_COMPRESSION_PROCESSED_NODES: 7328, DAG_COMPRESSION_RETAINED_NODES: 5236 - UnprovableResult [Line: 439]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 296#(and (<= |old(~__return_1121~0)| 0) (<= 66 main_~main__y~0) (<= ~__return_1121~0 0) (<= 100 main_~main__x~0) (<= 0 |old(~__return_1121~0)|) (<= 0 main_~__VERIFIER_assert__cond~0) (<= main_~__VERIFIER_assert__cond~0 0) (<= 0 ~__return_1121~0) (<= 0 ~__return_main~0) (<= main_~__tmp_1~0 0) (<= 0 main_~__tmp_1~0) (<= ~__return_main~0 0)). Possible FailurePath: RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...