/usr/bin/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain -i ../../../trunk/examples/svcomp/array-tiling/rewrev.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 04:54:56,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 04:54:56,971 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 04:54:56,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 04:54:56,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 04:54:56,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 04:54:56,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 04:54:57,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 04:54:57,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 04:54:57,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 04:54:57,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 04:54:57,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 04:54:57,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 04:54:57,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 04:54:57,014 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 04:54:57,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 04:54:57,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 04:54:57,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 04:54:57,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 04:54:57,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 04:54:57,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 04:54:57,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 04:54:57,023 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 04:54:57,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 04:54:57,026 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 04:54:57,026 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 04:54:57,026 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 04:54:57,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 04:54:57,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 04:54:57,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 04:54:57,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 04:54:57,029 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 04:54:57,030 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 04:54:57,031 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 04:54:57,032 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 04:54:57,032 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 04:54:57,033 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 04:54:57,033 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 04:54:57,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 04:54:57,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 04:54:57,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 04:54:57,035 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 [2019-11-07 04:54:57,049 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 04:54:57,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 04:54:57,050 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 04:54:57,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 04:54:57,051 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 04:54:57,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 04:54:57,051 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 04:54:57,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 04:54:57,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 04:54:57,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 04:54:57,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 04:54:57,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 04:54:57,052 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 04:54:57,052 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 04:54:57,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 04:54:57,053 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 04:54:57,053 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 04:54:57,053 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 04:54:57,054 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 04:54:57,054 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 04:54:57,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 04:54:57,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 04:54:57,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 04:54:57,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 04:54:57,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 04:54:57,055 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 04:54:57,055 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 04:54:57,055 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 04:54:57,055 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain [2019-11-07 04:54:57,356 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 04:54:57,377 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 04:54:57,381 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 04:54:57,382 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 04:54:57,383 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 04:54:57,384 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewrev.c [2019-11-07 04:54:57,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b00c3886f/550e06f80e1d4d6f8a01f97f5d1e346e/FLAGabf631cf2 [2019-11-07 04:54:57,934 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 04:54:57,935 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/rewrev.c [2019-11-07 04:54:57,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b00c3886f/550e06f80e1d4d6f8a01f97f5d1e346e/FLAGabf631cf2 [2019-11-07 04:54:58,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b00c3886f/550e06f80e1d4d6f8a01f97f5d1e346e [2019-11-07 04:54:58,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 04:54:58,278 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 04:54:58,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 04:54:58,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 04:54:58,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 04:54:58,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:54:58" (1/1) ... [2019-11-07 04:54:58,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510f79ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:54:58, skipping insertion in model container [2019-11-07 04:54:58,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:54:58" (1/1) ... [2019-11-07 04:54:58,294 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 04:54:58,310 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 04:54:58,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:54:58,485 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 04:54:58,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 04:54:58,515 INFO L192 MainTranslator]: Completed translation [2019-11-07 04:54:58,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:54:58 WrapperNode [2019-11-07 04:54:58,516 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 04:54:58,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 04:54:58,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 04:54:58,517 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 04:54:58,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:54:58" (1/1) ... [2019-11-07 04:54:58,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:54:58" (1/1) ... [2019-11-07 04:54:58,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:54:58" (1/1) ... [2019-11-07 04:54:58,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:54:58" (1/1) ... [2019-11-07 04:54:58,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:54:58" (1/1) ... [2019-11-07 04:54:58,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:54:58" (1/1) ... [2019-11-07 04:54:58,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:54:58" (1/1) ... [2019-11-07 04:54:58,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 04:54:58,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 04:54:58,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 04:54:58,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 04:54:58,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:54:58" (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 [2019-11-07 04:54:58,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 04:54:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 04:54:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 04:54:58,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 04:54:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 04:54:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 04:54:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 04:54:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 04:54:58,724 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 04:54:58,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 04:54:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 04:54:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 04:54:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 04:54:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 04:54:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 04:54:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 04:54:58,977 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 04:54:58,978 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-07 04:54:58,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:54:58 BoogieIcfgContainer [2019-11-07 04:54:58,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 04:54:58,980 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-11-07 04:54:58,980 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-11-07 04:54:58,981 INFO L275 PluginConnector]: Abstract Interpretation initialized [2019-11-07 04:54:58,981 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:54:58" (1/1) ... [2019-11-07 04:54:59,009 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 04:54:59,091 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-11-07 04:54:59,096 INFO L272 AbstractInterpreter]: Visited 12 different actions 12 times. Never merged. Never widened. Performed 27 root evaluator evaluations with a maximum evaluation depth of 4. Performed 27 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 29 variables. [2019-11-07 04:54:59,096 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-11-07 04:54:59,099 INFO L168 Benchmark]: Toolchain (without parser) took 819.75 ms. Allocated memory was 138.9 MB in the beginning and 205.0 MB in the end (delta: 66.1 MB). Free memory was 103.8 MB in the beginning and 162.1 MB in the end (delta: -58.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 7.1 GB. [2019-11-07 04:54:59,101 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-11-07 04:54:59,102 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.20 ms. Allocated memory is still 138.9 MB. Free memory was 103.6 MB in the beginning and 93.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2019-11-07 04:54:59,103 INFO L168 Benchmark]: Boogie Preprocessor took 139.03 ms. Allocated memory was 138.9 MB in the beginning and 205.0 MB in the end (delta: 66.1 MB). Free memory was 93.2 MB in the beginning and 183.2 MB in the end (delta: -90.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2019-11-07 04:54:59,104 INFO L168 Benchmark]: RCFGBuilder took 323.22 ms. Allocated memory is still 205.0 MB. Free memory was 183.2 MB in the beginning and 168.0 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2019-11-07 04:54:59,105 INFO L168 Benchmark]: Abstract Interpretation took 116.23 ms. Allocated memory is still 205.0 MB. Free memory was 168.0 MB in the beginning and 162.1 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 7.1 GB. [2019-11-07 04:54:59,109 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 138.9 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 237.20 ms. Allocated memory is still 138.9 MB. Free memory was 103.6 MB in the beginning and 93.2 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.03 ms. Allocated memory was 138.9 MB in the beginning and 205.0 MB in the end (delta: 66.1 MB). Free memory was 93.2 MB in the beginning and 183.2 MB in the end (delta: -90.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 323.22 ms. Allocated memory is still 205.0 MB. Free memory was 183.2 MB in the beginning and 168.0 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 116.23 ms. Allocated memory is still 205.0 MB. Free memory was 168.0 MB in the beginning and 162.1 MB in the end (delta: 5.9 MB). Peak memory consumption was 5.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location RESULT: Ultimate proved your program to be correct! Received shutdown request...