/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/SifaC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/array-fpi/eqn2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 04:09:36,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 04:09:36,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 04:09:36,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 04:09:36,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 04:09:36,345 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 04:09:36,346 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 04:09:36,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 04:09:36,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 04:09:36,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 04:09:36,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 04:09:36,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 04:09:36,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 04:09:36,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 04:09:36,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 04:09:36,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 04:09:36,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 04:09:36,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 04:09:36,363 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 04:09:36,365 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 04:09:36,366 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 04:09:36,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 04:09:36,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 04:09:36,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 04:09:36,376 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 04:09:36,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 04:09:36,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 04:09:36,377 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 04:09:36,378 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 04:09:36,378 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 04:09:36,379 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 04:09:36,379 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 04:09:36,380 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 04:09:36,380 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 04:09:36,381 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 04:09:36,381 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 04:09:36,382 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 04:09:36,382 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 04:09:36,382 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 04:09:36,383 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 04:09:36,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 04:09:36,384 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 04:09:36,411 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 04:09:36,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 04:09:36,412 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 04:09:36,412 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 04:09:36,413 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 04:09:36,413 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 04:09:36,413 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 04:09:36,414 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 04:09:36,414 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 04:09:36,414 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 04:09:36,415 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 04:09:36,415 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 04:09:36,415 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 04:09:36,415 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 04:09:36,415 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 04:09:36,415 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 04:09:36,415 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 04:09:36,416 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 04:09:36,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 04:09:36,416 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 04:09:36,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 04:09:36,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 04:09:36,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 04:09:36,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 04:09:36,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 04:09:36,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 04:09:36,417 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 04:09:36,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 04:09:36,417 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 04:09:36,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 04:09:36,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 04:09:36,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 04:09:36,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 04:09:36,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 04:09:36,418 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 04:09:36,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 04:09:36,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 04:09:36,419 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 04:09:36,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 04:09:36,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 04:09:36,419 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 04:09:36,419 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 04:09:36,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 04:09:36,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 04:09:36,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 04:09:36,701 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 04:09:36,701 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 04:09:36,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-fpi/eqn2f.c [2023-03-31 04:09:37,861 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 04:09:38,108 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 04:09:38,109 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn2f.c [2023-03-31 04:09:38,113 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc153763f/38aad30e3a6d4d2aa7ac40e49cec62c4/FLAGdbd789db7 [2023-03-31 04:09:38,127 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc153763f/38aad30e3a6d4d2aa7ac40e49cec62c4 [2023-03-31 04:09:38,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 04:09:38,131 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 04:09:38,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 04:09:38,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 04:09:38,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 04:09:38,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 04:09:38" (1/1) ... [2023-03-31 04:09:38,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1e00e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 04:09:38, skipping insertion in model container [2023-03-31 04:09:38,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 04:09:38" (1/1) ... [2023-03-31 04:09:38,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 04:09:38,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 04:09:38,309 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn2f.c[588,601] [2023-03-31 04:09:38,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 04:09:38,333 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 04:09:38,342 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-fpi/eqn2f.c[588,601] [2023-03-31 04:09:38,347 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 04:09:38,358 INFO L208 MainTranslator]: Completed translation [2023-03-31 04:09:38,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 04:09:38 WrapperNode [2023-03-31 04:09:38,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 04:09:38,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 04:09:38,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 04:09:38,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 04:09:38,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 04:09:38" (1/1) ... [2023-03-31 04:09:38,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 04:09:38" (1/1) ... [2023-03-31 04:09:38,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 04:09:38" (1/1) ... [2023-03-31 04:09:38,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 04:09:38" (1/1) ... [2023-03-31 04:09:38,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 04:09:38" (1/1) ... [2023-03-31 04:09:38,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 04:09:38" (1/1) ... [2023-03-31 04:09:38,400 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 04:09:38" (1/1) ... [2023-03-31 04:09:38,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 04:09:38" (1/1) ... [2023-03-31 04:09:38,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 04:09:38,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 04:09:38,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 04:09:38,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 04:09:38,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 04:09:38" (1/1) ... [2023-03-31 04:09:38,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 04:09:38,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 04:09:38,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 04:09:38,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 04:09:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 04:09:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 04:09:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 04:09:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 04:09:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 04:09:38,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 04:09:38,485 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 04:09:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 04:09:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 04:09:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 04:09:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 04:09:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 04:09:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 04:09:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 04:09:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 04:09:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 04:09:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 04:09:38,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 04:09:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 04:09:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 04:09:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 04:09:38,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 04:09:38,593 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 04:09:38,595 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 04:09:38,859 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 04:09:38,910 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 04:09:38,911 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-03-31 04:09:38,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 04:09:38 BoogieIcfgContainer [2023-03-31 04:09:38,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 04:09:38,914 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2023-03-31 04:09:38,914 INFO L271 PluginConnector]: Initializing Sifa... [2023-03-31 04:09:38,914 INFO L275 PluginConnector]: Sifa initialized [2023-03-31 04:09:38,915 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 04:09:38" (1/1) ... [2023-03-31 04:09:38,915 INFO L79 SifaObserver]: LogSizeWrapperFluid Intern Fluid=SizeLimitFluid ♦ Abstract Domain=IntervalDomain ♦ Max. Parallel Octagon=2 ♦ Fluid=SizeLimitFluid ♦ Max. Parallel Explicit Values=2 ♦ Max. Parallel Intervals=2 ♦ Loop Summarizer=FixpointLoopSummarizer ♦ CompoundDomain Intern Domains=ExplicitValueDomain;IntervalDomain ♦ Call Summarizer=TopInputCallSummarizer ♦ Xnf Conversion Technique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION ♦ SizeLimitFluid Max. Disjunctions=8 ♦ Simplification Technique=POLY_PAC ♦ Max. Parallel Equality=2 ♦ SizeLimitFluid Max. DAG Size=-1 [2023-03-31 04:09:38,950 INFO L159 IcfgInterpreter]: Started Sifa with 1 locations of interest [2023-03-31 04:09:38,950 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 04:09:38,955 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 04:09:38,960 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 04:09:38,961 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 04:09:39,183 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 74 for LOIs [2023-03-31 04:09:39,685 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 37 for LOIs [2023-03-31 04:09:39,714 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 04:09:39,727 INFO L104 SifaObserver]: ✘ Some error locations might be reachable, see reported results. [2023-03-31 04:09:39,728 INFO L132 PluginConnector]: ------------------------ END Sifa---------------------------- [2023-03-31 04:09:39,729 INFO L158 Benchmark]: Toolchain (without parser) took 1597.40ms. Allocated memory is still 280.0MB. Free memory was 243.3MB in the beginning and 235.6MB in the end (delta: 7.7MB). Peak memory consumption was 9.2MB. Max. memory is 8.0GB. [2023-03-31 04:09:39,729 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 136.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 04:09:39,730 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.97ms. Allocated memory is still 280.0MB. Free memory was 243.3MB in the beginning and 232.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-03-31 04:09:39,731 INFO L158 Benchmark]: Boogie Preprocessor took 53.85ms. Allocated memory is still 280.0MB. Free memory was 232.3MB in the beginning and 230.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-03-31 04:09:39,732 INFO L158 Benchmark]: RCFGBuilder took 498.67ms. Allocated memory is still 280.0MB. Free memory was 230.7MB in the beginning and 216.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-03-31 04:09:39,736 INFO L158 Benchmark]: Sifa took 814.01ms. Allocated memory is still 280.0MB. Free memory was 215.5MB in the beginning and 235.6MB in the end (delta: -20.1MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 04:09:39,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 189.8MB. Free memory is still 136.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 224.97ms. Allocated memory is still 280.0MB. Free memory was 243.3MB in the beginning and 232.3MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 53.85ms. Allocated memory is still 280.0MB. Free memory was 232.3MB in the beginning and 230.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 498.67ms. Allocated memory is still 280.0MB. Free memory was 230.7MB in the beginning and 216.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Sifa took 814.01ms. Allocated memory is still 280.0MB. Free memory was 215.5MB in the beginning and 235.6MB in the end (delta: -20.1MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.sifa: - StatisticsResult: Symbolic Interpretation with Fluid Abstractions OVERALL_TIME: 0.8s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 1, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 24, TOOLS_POST_TIME: 0.3s, TOOLS_POST_CALL_APPLICATIONS: 6, TOOLS_POST_CALL_TIME: 0.2s, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 34, TOOLS_QUANTIFIERELIM_TIME: 0.6s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 49, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 1, DOMAIN_JOIN_TIME: 0.0s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 3, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 6, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 1, DOMAIN_ISBOTTOM_TIME: 0.0s, LOOP_SUMMARIZER_APPLICATIONS: 3, LOOP_SUMMARIZER_CACHE_MISSES: 3, LOOP_SUMMARIZER_OVERALL_TIME: 0.2s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.2s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 6, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 3, 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: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 74, DAG_COMPRESSION_RETAINED_NODES: 45 - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Over-approximation of reachable states at this location is 40#(and (<= 0 ~N~0) (<= ~N~0 2147483647) (exists ((v_main_~b~0.base_BEFORE_CALL_3 Int) (v_main_~i~0_BEFORE_CALL_3 Int)) (and (<= 0 v_main_~i~0_BEFORE_CALL_3) (< v_main_~i~0_BEFORE_CALL_3 ~N~0) (not (= (+ (* v_main_~i~0_BEFORE_CALL_3 2) 1 (* 2 (* v_main_~i~0_BEFORE_CALL_3 v_main_~i~0_BEFORE_CALL_3))) (select (select |#memory_int| v_main_~b~0.base_BEFORE_CALL_3) (* v_main_~i~0_BEFORE_CALL_3 8)))))) (= |__VERIFIER_assert_#in~cond| 0) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0)). Possible FailurePath: RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-03-31 04:09:39,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...