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 -i ../../../trunk/examples/svcomp/floats-cdfpl/square_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-584d7b9 [2019-08-31 00:36:32,709 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-31 00:36:32,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-31 00:36:32,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-31 00:36:32,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-31 00:36:32,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-31 00:36:32,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-31 00:36:32,727 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-31 00:36:32,728 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-31 00:36:32,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-31 00:36:32,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-08-31 00:36:32,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-31 00:36:32,731 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-31 00:36:32,732 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-31 00:36:32,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-31 00:36:32,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-31 00:36:32,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-31 00:36:32,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-31 00:36:32,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-31 00:36:32,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-31 00:36:32,741 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-31 00:36:32,742 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-31 00:36:32,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-31 00:36:32,744 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-31 00:36:32,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-31 00:36:32,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-31 00:36:32,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-31 00:36:32,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-31 00:36:32,755 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 [2019-08-31 00:36:32,770 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-31 00:36:32,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-31 00:36:32,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-31 00:36:32,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-31 00:36:32,772 INFO L138 SettingsManager]: * Use SBE=true [2019-08-31 00:36:32,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-31 00:36:32,772 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-31 00:36:32,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-31 00:36:32,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-31 00:36:32,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-31 00:36:32,773 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-31 00:36:32,773 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-31 00:36:32,773 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-31 00:36:32,774 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-31 00:36:32,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-31 00:36:32,774 INFO L138 SettingsManager]: * Use constant arrays=true [2019-08-31 00:36:32,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-31 00:36:32,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-31 00:36:32,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-31 00:36:32,775 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-08-31 00:36:32,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-31 00:36:32,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-31 00:36:32,775 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-31 00:36:32,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-31 00:36:32,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-31 00:36:32,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-08-31 00:36:32,776 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-31 00:36:32,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-31 00:36:32,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-31 00:36:32,804 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-31 00:36:32,816 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-31 00:36:32,819 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-31 00:36:32,821 INFO L271 PluginConnector]: Initializing CDTParser... [2019-08-31 00:36:32,821 INFO L275 PluginConnector]: CDTParser initialized [2019-08-31 00:36:32,822 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cdfpl/square_1.i [2019-08-31 00:36:32,881 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e458b04b/7fe52765374349d598425ad0404866e1/FLAGbdc8fd77c [2019-08-31 00:36:33,285 INFO L306 CDTParser]: Found 1 translation units. [2019-08-31 00:36:33,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cdfpl/square_1.i [2019-08-31 00:36:33,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e458b04b/7fe52765374349d598425ad0404866e1/FLAGbdc8fd77c [2019-08-31 00:36:33,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e458b04b/7fe52765374349d598425ad0404866e1 [2019-08-31 00:36:33,712 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-31 00:36:33,714 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-31 00:36:33,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-08-31 00:36:33,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-08-31 00:36:33,718 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-08-31 00:36:33,719 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:36:33" (1/1) ... [2019-08-31 00:36:33,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d89f59f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:36:33, skipping insertion in model container [2019-08-31 00:36:33,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:36:33" (1/1) ... [2019-08-31 00:36:33,729 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-08-31 00:36:33,750 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-08-31 00:36:33,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-31 00:36:33,967 INFO L188 MainTranslator]: Completed pre-run [2019-08-31 00:36:33,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-31 00:36:33,999 INFO L192 MainTranslator]: Completed translation [2019-08-31 00:36:34,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:36:34 WrapperNode [2019-08-31 00:36:34,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-08-31 00:36:34,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-31 00:36:34,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-31 00:36:34,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-31 00:36:34,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:36:34" (1/1) ... [2019-08-31 00:36:34,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:36:34" (1/1) ... [2019-08-31 00:36:34,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:36:34" (1/1) ... [2019-08-31 00:36:34,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:36:34" (1/1) ... [2019-08-31 00:36:34,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:36:34" (1/1) ... [2019-08-31 00:36:34,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:36:34" (1/1) ... [2019-08-31 00:36:34,113 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:36:34" (1/1) ... [2019-08-31 00:36:34,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-31 00:36:34,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-31 00:36:34,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-31 00:36:34,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-31 00:36:34,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:36:34" (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 [2019-08-31 00:36:34,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-08-31 00:36:34,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-31 00:36:34,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-31 00:36:34,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-08-31 00:36:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-08-31 00:36:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2019-08-31 00:36:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-31 00:36:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-08-31 00:36:34,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-31 00:36:34,284 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-31 00:36:34,284 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-31 00:36:34,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:36:34 BoogieIcfgContainer [2019-08-31 00:36:34,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-31 00:36:34,286 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-08-31 00:36:34,286 INFO L271 PluginConnector]: Initializing Sifa... [2019-08-31 00:36:34,287 INFO L275 PluginConnector]: Sifa initialized [2019-08-31 00:36:34,288 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:36:34" (1/1) ... [2019-08-31 00:36:34,321 INFO L162 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-08-31 00:36:34,322 INFO L169 IcfgInterpreter]: Building call graph [2019-08-31 00:36:34,327 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-08-31 00:36:34,334 INFO L179 IcfgInterpreter]: Starting interpretation [2019-08-31 00:36:34,336 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-08-31 00:36:34,398 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-08-31 00:36:34,423 INFO L183 IcfgInterpreter]: Interpretation finished [2019-08-31 00:36:34,423 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-08-31 00:36:34,425 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 17#(= main_~x~0 main_~IN~0) [2019-08-31 00:36:34,441 INFO L103 SifaObserver]: ✘ Some error locations might be reachable, see reported results. [2019-08-31 00:36:34,441 INFO L132 PluginConnector]: ------------------------ END Sifa---------------------------- [2019-08-31 00:36:34,445 INFO L168 Benchmark]: Toolchain (without parser) took 729.63 ms. Allocated memory was 133.2 MB in the beginning and 199.8 MB in the end (delta: 66.6 MB). Free memory was 88.0 MB in the beginning and 159.7 MB in the end (delta: -71.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-08-31 00:36:34,446 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 133.2 MB. Free memory was 106.2 MB in the beginning and 106.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-08-31 00:36:34,448 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.11 ms. Allocated memory is still 133.2 MB. Free memory was 87.8 MB in the beginning and 78.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2019-08-31 00:36:34,450 INFO L168 Benchmark]: Boogie Preprocessor took 113.04 ms. Allocated memory was 133.2 MB in the beginning and 199.8 MB in the end (delta: 66.6 MB). Free memory was 78.4 MB in the beginning and 176.3 MB in the end (delta: -97.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. [2019-08-31 00:36:34,450 INFO L168 Benchmark]: RCFGBuilder took 171.50 ms. Allocated memory is still 199.8 MB. Free memory was 176.3 MB in the beginning and 166.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-08-31 00:36:34,456 INFO L168 Benchmark]: Sifa took 155.66 ms. Allocated memory is still 199.8 MB. Free memory was 166.3 MB in the beginning and 159.7 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 7.1 GB. [2019-08-31 00:36:34,465 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 133.2 MB. Free memory was 106.2 MB in the beginning and 106.0 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 286.11 ms. Allocated memory is still 133.2 MB. Free memory was 87.8 MB in the beginning and 78.4 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.04 ms. Allocated memory was 133.2 MB in the beginning and 199.8 MB in the end (delta: 66.6 MB). Free memory was 78.4 MB in the beginning and 176.3 MB in the end (delta: -97.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 171.50 ms. Allocated memory is still 199.8 MB. Free memory was 176.3 MB in the beginning and 166.9 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Sifa took 155.66 ms. Allocated memory is still 199.8 MB. Free memory was 166.3 MB in the beginning and 159.7 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.sifa: - StatisticsResult: Symbolic Interpretation with Fluid Abstractions 0.1s OVERALL_TIME, 2 ICFG_INTERPRETER_ENTERED_PROCEDURES, 6 DAG_INTERPRETER_EARLY_EXIT_QUERIES, 0 DAG_INTERPRETER_EARLY_EXITS, 4 TOOLS_POST_APPLICATIONS, 0.0s TOOLS_POST_TIME, 2 TOOLS_POST_CALL_APPLICATIONS, 0.0s TOOLS_POST_CALL_TIME, 1 TOOLS_POST_RETURN_APPLICATIONS, 0.0s TOOLS_POST_RETURN_TIME, 0.0s TOOLS_QUANTIFIERELIM_TIME, 0.0s FLUID_QUERY_TIME, 6 FLUID_QUERIES, 0 FLUID_YES_ANSWERS, 2 DOMAIN_JOIN_APPLICATIONS, 0.0s DOMAIN_JOIN_TIME, 0 DOMAIN_ALPHA_APPLICATIONS, 0.0s DOMAIN_ALPHA_TIME, 0 DOMAIN_WIDEN_APPLICATIONS, 0.0s DOMAIN_WIDEN_TIME, 0 DOMAIN_ISSUBSETEQ_APPLICATIONS, 0.0s DOMAIN_ISSUBSETEQ_TIME, 0 DOMAIN_ISBOTTOM_APPLICATIONS, 0.0s DOMAIN_ISBOTTOM_TIME, 0 LOOP_SUMMARIZER_APPLICATIONS, 0 LOOP_SUMMARIZER_CACHE_MISSES, 0.0s LOOP_SUMMARIZER_OVERALL_TIME, 0.0s LOOP_SUMMARIZER_NEW_COMPUTATION_TIME, 0 LOOP_SUMMARIZER_FIXPOINT_ITERATIONS, 1 CALL_SUMMARIZER_APPLICATIONS, 1 CALL_SUMMARIZER_CACHE_MISSES, 0.0s CALL_SUMMARIZER_OVERALL_TIME, 0.0s CALL_SUMMARIZER_NEW_COMPUTATION_TIME, 0.0s PROCEDURE_GRAPH_BUILDER_TIME, 0.0s PATH_EXPR_TIME, 0.0s REGEX_TO_DAG_TIME, 0.0s DAG_COMPRESSION_TIME, 29 DAG_COMPRESSION_PROCESSED_NODES, 19 DAG_COMPRESSION_RETAINED_NODES - UnprovableResult [Line: 15]: 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 17#(= main_~x~0 main_~IN~0). Possible FailurePath: RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...