java -ea -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/C-BIN-BPP-RCFG.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label54_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-078a9b7 [2018-11-22 01:18:55,318 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-22 01:18:55,322 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-22 01:18:55,341 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-22 01:18:55,341 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-22 01:18:55,342 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-22 01:18:55,345 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-22 01:18:55,347 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-22 01:18:55,348 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-22 01:18:55,349 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-22 01:18:55,350 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-22 01:18:55,351 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-22 01:18:55,352 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-22 01:18:55,353 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-22 01:18:55,354 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-22 01:18:55,355 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-22 01:18:55,355 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-22 01:18:55,357 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-22 01:18:55,359 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-22 01:18:55,361 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-22 01:18:55,362 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-22 01:18:55,364 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-22 01:18:55,366 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-22 01:18:55,367 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-22 01:18:55,367 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-22 01:18:55,368 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-22 01:18:55,369 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-22 01:18:55,370 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-22 01:18:55,370 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-22 01:18:55,371 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-22 01:18:55,372 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-22 01:18:55,373 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-22 01:18:55,373 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-22 01:18:55,373 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-22 01:18:55,375 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-22 01:18:55,376 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-22 01:18:55,376 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2018-11-22 01:18:55,403 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-22 01:18:55,404 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-22 01:18:55,405 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-22 01:18:55,406 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-22 01:18:55,406 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-22 01:18:55,406 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-22 01:18:55,407 INFO L133 SettingsManager]: * Use SBE=true [2018-11-22 01:18:55,407 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-22 01:18:55,407 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-22 01:18:55,407 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-22 01:18:55,407 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-22 01:18:55,408 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-22 01:18:55,408 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-22 01:18:55,408 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-22 01:18:55,408 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-22 01:18:55,408 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-22 01:18:55,409 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-22 01:18:55,409 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-22 01:18:55,409 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-22 01:18:55,409 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-22 01:18:55,409 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-22 01:18:55,410 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-22 01:18:55,410 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-22 01:18:55,410 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-22 01:18:55,410 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-22 01:18:55,410 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-22 01:18:55,410 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-22 01:18:55,411 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-22 01:18:55,411 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-22 01:18:55,411 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-22 01:18:55,411 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-22 01:18:55,464 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-22 01:18:55,483 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-22 01:18:55,487 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-22 01:18:55,489 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-22 01:18:55,489 INFO L276 PluginConnector]: CDTParser initialized [2018-11-22 01:18:55,490 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label54_true-unreach-call.c [2018-11-22 01:18:55,558 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/460e72ef8/6cb0b0a2996b4049a8a783b689d75e5d/FLAGa71232767 [2018-11-22 01:18:56,485 INFO L307 CDTParser]: Found 1 translation units. [2018-11-22 01:18:56,485 INFO L161 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label54_true-unreach-call.c [2018-11-22 01:18:56,535 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/460e72ef8/6cb0b0a2996b4049a8a783b689d75e5d/FLAGa71232767 [2018-11-22 01:18:56,898 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/460e72ef8/6cb0b0a2996b4049a8a783b689d75e5d [2018-11-22 01:18:56,908 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-22 01:18:56,910 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-11-22 01:18:56,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-22 01:18:56,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-22 01:18:56,916 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-22 01:18:56,919 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:18:56" (1/1) ... [2018-11-22 01:18:56,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cbf4d36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:18:56, skipping insertion in model container [2018-11-22 01:18:56,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:18:56" (1/1) ... [2018-11-22 01:18:56,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-22 01:18:57,249 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-22 01:18:59,994 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 01:19:00,001 INFO L191 MainTranslator]: Completed pre-run [2018-11-22 01:19:01,562 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-22 01:19:01,626 INFO L195 MainTranslator]: Completed translation [2018-11-22 01:19:01,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:01 WrapperNode [2018-11-22 01:19:01,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-22 01:19:01,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-22 01:19:01,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-22 01:19:01,628 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-22 01:19:01,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:01" (1/1) ... [2018-11-22 01:19:02,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:01" (1/1) ... [2018-11-22 01:19:02,095 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-22 01:19:02,096 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-22 01:19:02,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-22 01:19:02,096 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-22 01:19:02,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:01" (1/1) ... [2018-11-22 01:19:02,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:01" (1/1) ... [2018-11-22 01:19:02,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:01" (1/1) ... [2018-11-22 01:19:02,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:01" (1/1) ... [2018-11-22 01:19:02,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:01" (1/1) ... [2018-11-22 01:19:02,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:01" (1/1) ... [2018-11-22 01:19:02,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:01" (1/1) ... [2018-11-22 01:19:02,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-22 01:19:02,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-22 01:19:02,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-22 01:19:02,593 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-22 01:19:02,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:19:01" (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 [2018-11-22 01:19:02,660 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-22 01:19:02,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-22 01:19:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-22 01:19:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2018-11-22 01:19:02,661 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2018-11-22 01:19:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2018-11-22 01:19:02,661 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2018-11-22 01:19:02,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-22 01:19:02,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-22 01:19:02,662 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-22 01:19:02,662 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-22 01:19:02,662 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-22 01:19:02,662 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-22 01:19:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-22 01:19:02,663 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-22 01:19:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-22 01:19:02,663 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-22 01:19:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-22 01:19:02,663 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-22 01:19:02,663 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-22 01:19:02,664 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-22 01:19:02,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-22 01:19:02,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-22 01:19:24,423 INFO L271 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-22 01:19:24,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:19:24 BoogieIcfgContainer [2018-11-22 01:19:24,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-22 01:19:24,426 INFO L168 Benchmark]: Toolchain (without parser) took 27517.37 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.0 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -446.7 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-22 01:19:24,428 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-22 01:19:24,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 4716.26 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 163.6 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -74.2 MB). Peak memory consumption was 472.2 MB. Max. memory is 7.1 GB. [2018-11-22 01:19:24,430 INFO L168 Benchmark]: Boogie Procedure Inliner took 467.63 ms. Allocated memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: 806.4 MB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -944.1 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2018-11-22 01:19:24,431 INFO L168 Benchmark]: Boogie Preprocessor took 496.70 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: 57.5 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. [2018-11-22 01:19:24,432 INFO L168 Benchmark]: RCFGBuilder took 21831.59 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 79.2 MB). Free memory was 2.4 GB in the beginning and 1.8 GB in the end (delta: 514.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-22 01:19:24,437 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - GenericResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 4716.26 ms. Allocated memory was 1.5 GB in the beginning and 1.7 GB in the end (delta: 163.6 MB). Free memory was 1.4 GB in the beginning and 1.5 GB in the end (delta: -74.2 MB). Peak memory consumption was 472.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 467.63 ms. Allocated memory was 1.7 GB in the beginning and 2.5 GB in the end (delta: 806.4 MB). Free memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: -944.1 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 496.70 ms. Allocated memory is still 2.5 GB. Free memory was 2.4 GB in the beginning and 2.4 GB in the end (delta: 57.5 MB). Peak memory consumption was 57.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 21831.59 ms. Allocated memory was 2.5 GB in the beginning and 2.6 GB in the end (delta: 79.2 MB). Free memory was 2.4 GB in the beginning and 1.8 GB in the end (delta: 514.1 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...