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/trex03-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-11 16:11:05,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-11 16:11:05,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-11 16:11:05,490 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-11 16:11:05,491 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-11 16:11:05,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-11 16:11:05,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-11 16:11:05,495 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-11 16:11:05,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-11 16:11:05,497 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-11 16:11:05,498 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-11 16:11:05,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-11 16:11:05,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-11 16:11:05,501 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-11 16:11:05,502 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-11 16:11:05,503 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-11 16:11:05,504 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-11 16:11:05,505 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-11 16:11:05,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-11 16:11:05,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-11 16:11:05,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-11 16:11:05,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-11 16:11:05,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-11 16:11:05,513 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-11 16:11:05,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-11 16:11:05,518 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-11 16:11:05,519 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-11 16:11:05,520 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-11 16:11:05,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-11 16:11:05,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-11 16:11:05,522 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-11 16:11:05,523 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-11 16:11:05,523 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-11 16:11:05,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-11 16:11:05,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-11 16:11:05,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-11 16:11:05,525 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 [2019-09-11 16:11:05,541 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-11 16:11:05,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-11 16:11:05,541 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-11 16:11:05,541 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-11 16:11:05,542 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-11 16:11:05,542 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-11 16:11:05,543 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-11 16:11:05,543 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-11 16:11:05,543 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-11 16:11:05,543 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-11 16:11:05,544 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-11 16:11:05,544 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-11 16:11:05,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-11 16:11:05,544 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-11 16:11:05,544 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-11 16:11:05,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-11 16:11:05,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-11 16:11:05,545 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-11 16:11:05,545 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-11 16:11:05,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-11 16:11:05,546 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-11 16:11:05,546 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-11 16:11:05,546 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-11 16:11:05,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-11 16:11:05,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-11 16:11:05,547 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-11 16:11:05,547 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-11 16:11:05,547 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-11 16:11:05,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-11 16:11:05,547 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-11 16:11:05,576 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-11 16:11:05,590 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-11 16:11:05,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-11 16:11:05,598 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-11 16:11:05,598 INFO L275 PluginConnector]: CDTParser initialized [2019-09-11 16:11:05,599 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-2.c [2019-09-11 16:11:05,674 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aed263ea/c99c99d24cc644a297652a67d96f6a5f/FLAGd1c73fd52 [2019-09-11 16:11:06,146 INFO L306 CDTParser]: Found 1 translation units. [2019-09-11 16:11:06,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-2.c [2019-09-11 16:11:06,153 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aed263ea/c99c99d24cc644a297652a67d96f6a5f/FLAGd1c73fd52 [2019-09-11 16:11:06,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6aed263ea/c99c99d24cc644a297652a67d96f6a5f [2019-09-11 16:11:06,588 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-11 16:11:06,590 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-11 16:11:06,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-11 16:11:06,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-11 16:11:06,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-11 16:11:06,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 04:11:06" (1/1) ... [2019-09-11 16:11:06,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e77e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:11:06, skipping insertion in model container [2019-09-11 16:11:06,600 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 04:11:06" (1/1) ... [2019-09-11 16:11:06,607 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-11 16:11:06,625 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-11 16:11:06,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-11 16:11:06,809 INFO L188 MainTranslator]: Completed pre-run [2019-09-11 16:11:06,826 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-11 16:11:06,838 INFO L192 MainTranslator]: Completed translation [2019-09-11 16:11:06,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:11:06 WrapperNode [2019-09-11 16:11:06,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-11 16:11:06,839 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-11 16:11:06,839 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-11 16:11:06,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-11 16:11:06,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:11:06" (1/1) ... [2019-09-11 16:11:06,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:11:06" (1/1) ... [2019-09-11 16:11:06,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:11:06" (1/1) ... [2019-09-11 16:11:06,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:11:06" (1/1) ... [2019-09-11 16:11:06,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:11:06" (1/1) ... [2019-09-11 16:11:06,957 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:11:06" (1/1) ... [2019-09-11 16:11:06,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:11:06" (1/1) ... [2019-09-11 16:11:06,960 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-11 16:11:06,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-11 16:11:06,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-11 16:11:06,960 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-11 16:11:06,961 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 04:11:06" (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 [2019-09-11 16:11:07,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-11 16:11:07,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-11 16:11:07,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-11 16:11:07,017 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-11 16:11:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-11 16:11:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-11 16:11:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-09-11 16:11:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-11 16:11:07,017 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-11 16:11:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-11 16:11:07,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-11 16:11:07,206 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-11 16:11:07,206 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-11 16:11:07,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 04:11:07 BoogieIcfgContainer [2019-09-11 16:11:07,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-11 16:11:07,208 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-09-11 16:11:07,208 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-09-11 16:11:07,209 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-09-11 16:11:07,209 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 04:11:07" (1/1) ... [2019-09-11 16:11:07,245 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-11 16:11:07,329 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-09-11 16:11:07,457 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-09-11 16:11:07,476 INFO L272 AbstractInterpreter]: Visited 25 different actions 25 times. Never merged. Never widened. Performed 29 root evaluator evaluations with a maximum evaluation depth of 8. Performed 29 inverse root evaluator evaluations with a maximum inverse evaluation depth of 8. Found 3 fixpoints after 3 different actions. Largest state had 16 variables. [2019-09-11 16:11:07,476 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-09-11 16:11:07,479 INFO L168 Benchmark]: Toolchain (without parser) took 888.12 ms. Allocated memory was 135.3 MB in the beginning and 202.4 MB in the end (delta: 67.1 MB). Free memory was 91.9 MB in the beginning and 152.6 MB in the end (delta: -60.7 MB). Peak memory consumption was 6.4 MB. Max. memory is 7.1 GB. [2019-09-11 16:11:07,481 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 135.3 MB. Free memory was 109.8 MB in the beginning and 109.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-11 16:11:07,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.93 ms. Allocated memory is still 135.3 MB. Free memory was 91.7 MB in the beginning and 81.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-09-11 16:11:07,483 INFO L168 Benchmark]: Boogie Preprocessor took 120.38 ms. Allocated memory was 135.3 MB in the beginning and 202.4 MB in the end (delta: 67.1 MB). Free memory was 81.8 MB in the beginning and 179.0 MB in the end (delta: -97.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-11 16:11:07,484 INFO L168 Benchmark]: RCFGBuilder took 247.63 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 167.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2019-09-11 16:11:07,484 INFO L168 Benchmark]: Abstract Interpretation took 268.06 ms. Allocated memory is still 202.4 MB. Free memory was 167.2 MB in the beginning and 152.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2019-09-11 16:11:07,489 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 135.3 MB. Free memory was 109.8 MB in the beginning and 109.6 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 247.93 ms. Allocated memory is still 135.3 MB. Free memory was 91.7 MB in the beginning and 81.8 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 120.38 ms. Allocated memory was 135.3 MB in the beginning and 202.4 MB in the end (delta: 67.1 MB). Free memory was 81.8 MB in the beginning and 179.0 MB in the end (delta: -97.2 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 247.63 ms. Allocated memory is still 202.4 MB. Free memory was 179.0 MB in the beginning and 167.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 268.06 ms. Allocated memory is still 202.4 MB. Free memory was 167.2 MB in the beginning and 152.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 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: [L14] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L14] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L14] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L15] unsigned int d1=1, d2=1, d3=1; [L16] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L16] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L18] COND FALSE !(x1>0 && x2>0 && x3>0) [L27] CALL __VERIFIER_assert(x1==0 || x2==0 || x3==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...