java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AbstractInterpretationC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/loops/trex02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 12:39:20,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 12:39:20,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 12:39:20,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 12:39:20,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 12:39:20,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 12:39:20,182 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 12:39:20,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 12:39:20,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 12:39:20,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 12:39:20,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 12:39:20,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 12:39:20,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 12:39:20,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 12:39:20,190 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 12:39:20,191 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 12:39:20,192 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 12:39:20,193 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 12:39:20,194 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 12:39:20,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 12:39:20,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 12:39:20,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 12:39:20,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 12:39:20,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 12:39:20,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-03 12:39:20,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-03 12:39:20,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-03 12:39:20,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-03 12:39:20,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-03 12:39:20,210 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-03 12:39:20,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 12:39:20,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 12:39:20,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 12:39:20,214 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 12:39:20,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 12:39:20,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 12:39:20,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 12:39:20,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 12:39:20,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 12:39:20,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 12:39:20,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 12:39:20,223 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 [2019-10-03 12:39:20,245 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 12:39:20,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 12:39:20,246 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 12:39:20,247 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 12:39:20,248 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 12:39:20,248 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 12:39:20,248 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 12:39:20,248 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 12:39:20,248 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 12:39:20,249 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 12:39:20,250 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 12:39:20,251 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 12:39:20,251 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 12:39:20,251 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 12:39:20,252 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 12:39:20,252 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 12:39:20,252 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 12:39:20,252 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 12:39:20,252 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 12:39:20,253 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 12:39:20,253 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 12:39:20,253 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 12:39:20,253 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 12:39:20,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 12:39:20,254 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 12:39:20,254 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 12:39:20,254 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 12:39:20,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 12:39:20,255 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 12:39:20,255 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 12:39:20,305 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 12:39:20,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 12:39:20,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 12:39:20,331 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 12:39:20,331 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 12:39:20,332 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex02-1.c [2019-10-03 12:39:20,406 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b92cacb46/3dd6e1bbe4ab41a3a4f6ea03e5d0fefa/FLAGc57a6632a [2019-10-03 12:39:20,859 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 12:39:20,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02-1.c [2019-10-03 12:39:20,867 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b92cacb46/3dd6e1bbe4ab41a3a4f6ea03e5d0fefa/FLAGc57a6632a [2019-10-03 12:39:21,261 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b92cacb46/3dd6e1bbe4ab41a3a4f6ea03e5d0fefa [2019-10-03 12:39:21,270 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 12:39:21,271 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 12:39:21,272 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 12:39:21,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 12:39:21,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 12:39:21,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 12:39:21" (1/1) ... [2019-10-03 12:39:21,280 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@404140b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:39:21, skipping insertion in model container [2019-10-03 12:39:21,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 12:39:21" (1/1) ... [2019-10-03 12:39:21,288 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 12:39:21,306 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 12:39:21,472 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 12:39:21,477 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 12:39:21,489 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 12:39:21,504 INFO L192 MainTranslator]: Completed translation [2019-10-03 12:39:21,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:39:21 WrapperNode [2019-10-03 12:39:21,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 12:39:21,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 12:39:21,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 12:39:21,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 12:39:21,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:39:21" (1/1) ... [2019-10-03 12:39:21,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:39:21" (1/1) ... [2019-10-03 12:39:21,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:39:21" (1/1) ... [2019-10-03 12:39:21,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:39:21" (1/1) ... [2019-10-03 12:39:21,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:39:21" (1/1) ... [2019-10-03 12:39:21,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:39:21" (1/1) ... [2019-10-03 12:39:21,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:39:21" (1/1) ... [2019-10-03 12:39:21,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 12:39:21,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 12:39:21,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 12:39:21,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 12:39:21,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 12:39:21" (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 [2019-10-03 12:39:21,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 12:39:21,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 12:39:21,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-03 12:39:21,669 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-10-03 12:39:21,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 12:39:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 12:39:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-03 12:39:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-03 12:39:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-03 12:39:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-10-03 12:39:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 12:39:21,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 12:39:21,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 12:39:21,859 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 12:39:21,859 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-03 12:39:21,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 12:39:21 BoogieIcfgContainer [2019-10-03 12:39:21,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 12:39:21,862 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-10-03 12:39:21,862 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-10-03 12:39:21,862 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-10-03 12:39:21,863 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 12:39:21" (1/1) ... [2019-10-03 12:39:21,907 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 12:39:22,034 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-10-03 12:39:22,063 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-03 12:39:22,078 INFO L272 AbstractInterpreter]: Visited 28 different actions 30 times. Never merged. Never widened. Performed 24 root evaluator evaluations with a maximum evaluation depth of 5. Performed 24 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Found 2 fixpoints after 2 different actions. Largest state had 6 variables. [2019-10-03 12:39:22,078 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-10-03 12:39:22,081 INFO L168 Benchmark]: Toolchain (without parser) took 808.18 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 88.0 MB in the beginning and 158.2 MB in the end (delta: -70.2 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-03 12:39:22,082 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 106.5 MB in the beginning and 106.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 12:39:22,084 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.17 ms. Allocated memory is still 140.5 MB. Free memory was 87.6 MB in the beginning and 78.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-10-03 12:39:22,085 INFO L168 Benchmark]: Boogie Preprocessor took 111.78 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 78.4 MB in the beginning and 177.8 MB in the end (delta: -99.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-10-03 12:39:22,087 INFO L168 Benchmark]: RCFGBuilder took 243.30 ms. Allocated memory is still 200.3 MB. Free memory was 177.8 MB in the beginning and 165.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2019-10-03 12:39:22,088 INFO L168 Benchmark]: Abstract Interpretation took 216.11 ms. Allocated memory is still 200.3 MB. Free memory was 165.9 MB in the beginning and 158.2 MB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 7.1 GB. [2019-10-03 12:39:22,094 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 140.5 MB. Free memory was 106.5 MB in the beginning and 106.3 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 233.17 ms. Allocated memory is still 140.5 MB. Free memory was 87.6 MB in the beginning and 78.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.78 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 78.4 MB in the beginning and 177.8 MB in the end (delta: -99.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 243.30 ms. Allocated memory is still 200.3 MB. Free memory was 177.8 MB in the beginning and 165.9 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 216.11 ms. Allocated memory is still 200.3 MB. Free memory was 165.9 MB in the beginning and 158.2 MB in the end (delta: 7.7 MB). Peak memory consumption was 7.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 5]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: abstract domain could reach this error location. Possible FailurePath: [L13] int x; [L20] x=__VERIFIER_nondet_int() [L21] COND FALSE !(x > 0) [L26] CALL __VERIFIER_assert(x<=0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...