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/loop-invgen/seq-3.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-0883e75 [2019-09-05 13:35:22,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-05 13:35:22,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-05 13:35:22,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-05 13:35:22,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-05 13:35:22,092 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-05 13:35:22,094 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-05 13:35:22,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-05 13:35:22,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-05 13:35:22,098 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-05 13:35:22,099 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-05 13:35:22,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-05 13:35:22,101 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-05 13:35:22,102 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-05 13:35:22,103 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-05 13:35:22,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-05 13:35:22,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-05 13:35:22,106 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-05 13:35:22,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-05 13:35:22,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-05 13:35:22,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-05 13:35:22,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-05 13:35:22,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-05 13:35:22,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-05 13:35:22,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-05 13:35:22,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-05 13:35:22,116 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-05 13:35:22,117 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-05 13:35:22,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-05 13:35:22,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-05 13:35:22,119 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-05 13:35:22,120 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-05 13:35:22,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-05 13:35:22,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-05 13:35:22,122 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-05 13:35:22,122 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-05 13:35:22,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-05 13:35:22,125 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-05 13:35:22,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-05 13:35:22,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-05 13:35:22,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-05 13:35:22,130 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 [2019-09-05 13:35:22,157 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-05 13:35:22,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-05 13:35:22,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-05 13:35:22,158 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-05 13:35:22,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-05 13:35:22,159 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-05 13:35:22,159 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-05 13:35:22,160 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-05 13:35:22,160 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-05 13:35:22,160 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-05 13:35:22,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-05 13:35:22,163 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-05 13:35:22,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-05 13:35:22,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-05 13:35:22,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-05 13:35:22,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-05 13:35:22,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-05 13:35:22,165 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-05 13:35:22,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-05 13:35:22,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-05 13:35:22,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-05 13:35:22,166 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-05 13:35:22,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-05 13:35:22,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-05 13:35:22,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-05 13:35:22,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-05 13:35:22,167 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-05 13:35:22,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-05 13:35:22,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-05 13:35:22,167 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-05 13:35:22,215 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-05 13:35:22,227 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-05 13:35:22,230 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-05 13:35:22,231 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-05 13:35:22,232 INFO L275 PluginConnector]: CDTParser initialized [2019-09-05 13:35:22,233 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/seq-3.i [2019-09-05 13:35:22,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24e7cfce/68e5412bf0a141f6b46b4e3c6b219356/FLAG3194da281 [2019-09-05 13:35:22,695 INFO L306 CDTParser]: Found 1 translation units. [2019-09-05 13:35:22,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/seq-3.i [2019-09-05 13:35:22,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24e7cfce/68e5412bf0a141f6b46b4e3c6b219356/FLAG3194da281 [2019-09-05 13:35:23,042 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f24e7cfce/68e5412bf0a141f6b46b4e3c6b219356 [2019-09-05 13:35:23,055 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-05 13:35:23,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-05 13:35:23,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-05 13:35:23,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-05 13:35:23,064 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-05 13:35:23,065 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:35:23" (1/1) ... [2019-09-05 13:35:23,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd8fe5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:35:23, skipping insertion in model container [2019-09-05 13:35:23,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.09 01:35:23" (1/1) ... [2019-09-05 13:35:23,078 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-05 13:35:23,101 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-05 13:35:23,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:35:23,390 INFO L188 MainTranslator]: Completed pre-run [2019-09-05 13:35:23,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-05 13:35:23,435 INFO L192 MainTranslator]: Completed translation [2019-09-05 13:35:23,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:35:23 WrapperNode [2019-09-05 13:35:23,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-05 13:35:23,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-05 13:35:23,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-05 13:35:23,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-05 13:35:23,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:35:23" (1/1) ... [2019-09-05 13:35:23,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:35:23" (1/1) ... [2019-09-05 13:35:23,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:35:23" (1/1) ... [2019-09-05 13:35:23,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:35:23" (1/1) ... [2019-09-05 13:35:23,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:35:23" (1/1) ... [2019-09-05 13:35:23,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:35:23" (1/1) ... [2019-09-05 13:35:23,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:35:23" (1/1) ... [2019-09-05 13:35:23,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-05 13:35:23,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-05 13:35:23,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-05 13:35:23,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-05 13:35:23,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.09 01:35:23" (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 [2019-09-05 13:35:23,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-05 13:35:23,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-05 13:35:23,676 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-05 13:35:23,676 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-05 13:35:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-05 13:35:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-05 13:35:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-05 13:35:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-05 13:35:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-05 13:35:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-05 13:35:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-05 13:35:23,942 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-05 13:35:23,942 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-09-05 13:35:23,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:35:23 BoogieIcfgContainer [2019-09-05 13:35:23,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-05 13:35:23,945 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-09-05 13:35:23,946 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-09-05 13:35:23,946 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-09-05 13:35:23,947 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.09 01:35:23" (1/1) ... [2019-09-05 13:35:24,009 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-05 13:35:24,289 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-05 13:35:24,310 INFO L272 AbstractInterpreter]: Visited 32 different actions 196 times. Merged at 14 different actions 67 times. Widened at 5 different actions 13 times. Performed 352 root evaluator evaluations with a maximum evaluation depth of 6. Performed 352 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 24 fixpoints after 7 different actions. Largest state had 15 variables. [2019-09-05 13:35:24,311 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-09-05 13:35:24,314 INFO L168 Benchmark]: Toolchain (without parser) took 1255.86 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 84.7 MB in the beginning and 147.6 MB in the end (delta: -62.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-05 13:35:24,315 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory is still 102.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-05 13:35:24,316 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.52 ms. Allocated memory is still 137.9 MB. Free memory was 84.2 MB in the beginning and 74.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-09-05 13:35:24,317 INFO L168 Benchmark]: Boogie Preprocessor took 162.86 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 74.9 MB in the beginning and 175.7 MB in the end (delta: -100.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-09-05 13:35:24,318 INFO L168 Benchmark]: RCFGBuilder took 343.35 ms. Allocated memory is still 198.7 MB. Free memory was 175.7 MB in the beginning and 163.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2019-09-05 13:35:24,319 INFO L168 Benchmark]: Abstract Interpretation took 365.33 ms. Allocated memory is still 198.7 MB. Free memory was 163.1 MB in the beginning and 147.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2019-09-05 13:35:24,323 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 137.9 MB. Free memory is still 102.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 377.52 ms. Allocated memory is still 137.9 MB. Free memory was 84.2 MB in the beginning and 74.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.86 ms. Allocated memory was 137.9 MB in the beginning and 198.7 MB in the end (delta: 60.8 MB). Free memory was 74.9 MB in the beginning and 175.7 MB in the end (delta: -100.8 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 343.35 ms. Allocated memory is still 198.7 MB. Free memory was 175.7 MB in the beginning and 163.1 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 365.33 ms. Allocated memory is still 198.7 MB. Free memory was 163.1 MB in the beginning and 147.6 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 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: [L11] int n0, n1; [L12] int i0 = 0; [L13] int k = 0; [L14] n0 = __VERIFIER_nondet_int() [L15] n1 = __VERIFIER_nondet_int() [L16] COND FALSE !(!(-1000000 <= n0 && n0 < 1000000)) [L17] COND FALSE !(!(-1000000 <= n1 && n1 < 1000000)) [L18] COND FALSE !(i0 < n0) [L22] int i1 = 0; [L23] COND TRUE i1 < n1 [L24] i1++ [L25] k++ [L23] COND FALSE !(i1 < n1) [L27] int j1 = 0; [L28] COND TRUE j1 < n0 + n1 [L29] CALL __VERIFIER_assert(k > 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...