/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/AutomizerC.xml --sifa.abstract.domain EqDomain -i ../sv-benchmarks/c/loop-crafted/simple_array_index_value_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 11:04:44,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 11:04:44,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 11:04:44,369 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 11:04:44,369 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 11:04:44,372 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 11:04:44,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 11:04:44,377 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 11:04:44,379 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 11:04:44,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 11:04:44,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 11:04:44,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 11:04:44,385 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 11:04:44,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 11:04:44,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 11:04:44,387 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 11:04:44,388 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 11:04:44,389 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 11:04:44,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 11:04:44,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 11:04:44,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 11:04:44,397 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 11:04:44,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 11:04:44,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 11:04:44,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-01 11:04:44,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-01 11:04:44,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-01 11:04:44,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-01 11:04:44,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-01 11:04:44,407 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-01 11:04:44,407 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 11:04:44,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 11:04:44,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 11:04:44,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 11:04:44,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 11:04:44,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 11:04:44,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 11:04:44,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 11:04:44,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 11:04:44,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 11:04:44,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 11:04:44,414 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 [2023-04-01 11:04:44,440 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 11:04:44,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 11:04:44,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 11:04:44,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 11:04:44,442 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 11:04:44,442 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 11:04:44,442 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 11:04:44,442 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 11:04:44,442 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 11:04:44,442 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 11:04:44,443 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 11:04:44,443 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 11:04:44,443 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 11:04:44,443 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 11:04:44,443 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 11:04:44,443 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 11:04:44,444 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 11:04:44,444 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 11:04:44,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 11:04:44,444 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 11:04:44,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 11:04:44,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 11:04:44,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 11:04:44,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 11:04:44,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 11:04:44,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 11:04:44,445 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 11:04:44,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 11:04:44,446 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 11:04:44,446 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 11:04:44,446 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 11:04:44,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 11:04:44,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 11:04:44,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 11:04:44,447 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 11:04:44,447 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 11:04:44,447 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 11:04:44,447 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 11:04:44,447 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 11:04:44,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 11:04:44,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 11:04:44,447 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> EqDomain [2023-04-01 11:04:44,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 11:04:44,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 11:04:44,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 11:04:44,687 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 11:04:44,688 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 11:04:44,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-crafted/simple_array_index_value_1-2.i [2023-04-01 11:04:45,798 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 11:04:45,980 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 11:04:45,980 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_1-2.i [2023-04-01 11:04:45,986 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51917d04/6609f09f402e497c8e9cdd94222a3ab4/FLAG770759f81 [2023-04-01 11:04:46,001 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d51917d04/6609f09f402e497c8e9cdd94222a3ab4 [2023-04-01 11:04:46,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 11:04:46,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 11:04:46,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 11:04:46,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 11:04:46,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 11:04:46,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:04:46" (1/1) ... [2023-04-01 11:04:46,014 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e28b7fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:04:46, skipping insertion in model container [2023-04-01 11:04:46,014 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 11:04:46" (1/1) ... [2023-04-01 11:04:46,021 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 11:04:46,034 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 11:04:46,185 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/loop-crafted/simple_array_index_value_1-2.i[921,934] [2023-04-01 11:04:46,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 11:04:46,211 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 11:04:46,224 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/loop-crafted/simple_array_index_value_1-2.i[921,934] [2023-04-01 11:04:46,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 11:04:46,243 INFO L208 MainTranslator]: Completed translation [2023-04-01 11:04:46,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:04:46 WrapperNode [2023-04-01 11:04:46,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 11:04:46,245 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 11:04:46,245 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 11:04:46,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 11:04:46,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:04:46" (1/1) ... [2023-04-01 11:04:46,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:04:46" (1/1) ... [2023-04-01 11:04:46,262 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:04:46" (1/1) ... [2023-04-01 11:04:46,262 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:04:46" (1/1) ... [2023-04-01 11:04:46,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:04:46" (1/1) ... [2023-04-01 11:04:46,274 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:04:46" (1/1) ... [2023-04-01 11:04:46,275 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:04:46" (1/1) ... [2023-04-01 11:04:46,276 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:04:46" (1/1) ... [2023-04-01 11:04:46,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 11:04:46,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 11:04:46,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 11:04:46,279 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 11:04:46,280 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:04:46" (1/1) ... [2023-04-01 11:04:46,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 11:04:46,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 11:04:46,309 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) [2023-04-01 11:04:46,325 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 [2023-04-01 11:04:46,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 11:04:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 11:04:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 11:04:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 11:04:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-04-01 11:04:46,348 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 11:04:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 11:04:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 11:04:46,348 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 11:04:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 11:04:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 11:04:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 11:04:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 11:04:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-04-01 11:04:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2023-04-01 11:04:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 11:04:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-04-01 11:04:46,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 11:04:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 11:04:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 11:04:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 11:04:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 11:04:46,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 11:04:46,406 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 11:04:46,408 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 11:04:46,564 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 11:04:46,629 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 11:04:46,629 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-01 11:04:46,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:04:46 BoogieIcfgContainer [2023-04-01 11:04:46,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 11:04:46,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 11:04:46,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 11:04:46,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 11:04:46,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 11:04:46" (1/3) ... [2023-04-01 11:04:46,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48241d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:04:46, skipping insertion in model container [2023-04-01 11:04:46,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 11:04:46" (2/3) ... [2023-04-01 11:04:46,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48241d6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 11:04:46, skipping insertion in model container [2023-04-01 11:04:46,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 11:04:46" (3/3) ... [2023-04-01 11:04:46,653 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_1-2.i [2023-04-01 11:04:46,680 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 11:04:46,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 11:04:46,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 11:04:46,745 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4fec0171, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 11:04:46,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 11:04:46,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-01 11:04:46,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-04-01 11:04:46,757 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:04:46,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:04:46,759 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:04:46,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:04:46,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1993213218, now seen corresponding path program 1 times [2023-04-01 11:04:46,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:04:46,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100378086] [2023-04-01 11:04:46,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:04:46,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:04:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-01 11:04:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-01 11:04:46,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-04-01 11:04:46,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100378086] [2023-04-01 11:04:46,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100378086] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-01 11:04:46,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-01 11:04:46,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-04-01 11:04:46,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794651532] [2023-04-01 11:04:46,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-01 11:04:46,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-04-01 11:04:46,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-04-01 11:04:47,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-04-01 11:04:47,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 11:04:47,023 INFO L87 Difference]: Start difference. First operand has 19 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:04:47,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-01 11:04:47,060 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2023-04-01 11:04:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-04-01 11:04:47,062 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-04-01 11:04:47,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-01 11:04:47,068 INFO L225 Difference]: With dead ends: 31 [2023-04-01 11:04:47,068 INFO L226 Difference]: Without dead ends: 13 [2023-04-01 11:04:47,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-04-01 11:04:47,074 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-04-01 11:04:47,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-04-01 11:04:47,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2023-04-01 11:04:47,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2023-04-01 11:04:47,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:04:47,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2023-04-01 11:04:47,104 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2023-04-01 11:04:47,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-01 11:04:47,105 INFO L495 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2023-04-01 11:04:47,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-01 11:04:47,106 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2023-04-01 11:04:47,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-04-01 11:04:47,107 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 11:04:47,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 11:04:47,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 11:04:47,109 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 11:04:47,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 11:04:47,111 INFO L85 PathProgramCache]: Analyzing trace with hash 186781008, now seen corresponding path program 1 times [2023-04-01 11:04:47,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 11:04:47,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244775465] [2023-04-01 11:04:47,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 11:04:47,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 11:04:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 11:04:47,158 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 11:04:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 11:04:47,199 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 11:04:47,199 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 11:04:47,200 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 11:04:47,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-01 11:04:47,204 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-04-01 11:04:47,207 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 11:04:47,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 11:04:47 BoogieIcfgContainer [2023-04-01 11:04:47,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 11:04:47,238 INFO L158 Benchmark]: Toolchain (without parser) took 1232.86ms. Allocated memory is still 254.8MB. Free memory was 205.1MB in the beginning and 153.8MB in the end (delta: 51.4MB). Peak memory consumption was 51.4MB. Max. memory is 8.0GB. [2023-04-01 11:04:47,238 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 183.5MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 11:04:47,239 INFO L158 Benchmark]: CACSL2BoogieTranslator took 234.79ms. Allocated memory is still 254.8MB. Free memory was 204.6MB in the beginning and 194.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 11:04:47,242 INFO L158 Benchmark]: Boogie Preprocessor took 33.39ms. Allocated memory is still 254.8MB. Free memory was 194.7MB in the beginning and 193.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 11:04:47,242 INFO L158 Benchmark]: RCFGBuilder took 363.55ms. Allocated memory is still 254.8MB. Free memory was 193.1MB in the beginning and 180.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2023-04-01 11:04:47,244 INFO L158 Benchmark]: TraceAbstraction took 590.32ms. Allocated memory is still 254.8MB. Free memory was 179.5MB in the beginning and 153.8MB in the end (delta: 25.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2023-04-01 11:04:47,249 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 183.5MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 234.79ms. Allocated memory is still 254.8MB. Free memory was 204.6MB in the beginning and 194.7MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.39ms. Allocated memory is still 254.8MB. Free memory was 194.7MB in the beginning and 193.1MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 363.55ms. Allocated memory is still 254.8MB. Free memory was 193.1MB in the beginning and 180.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 590.32ms. Allocated memory is still 254.8MB. Free memory was 179.5MB in the beginning and 153.8MB in the end (delta: 25.7MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 26]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L35] unsigned int array[10000]; [L36] unsigned int index = 0; [L37] unsigned int tmp = 0; VAL [array={3:0}, index=0, tmp=0] [L39] COND TRUE 1 [L40] index = __VERIFIER_nondet_uint() [L41] COND TRUE index >= 10000 VAL [array={3:0}, index=10000, tmp=0] [L48] EXPR tmp < 10000 && array[tmp] == tmp [L48] EXPR array[tmp] [L48] EXPR tmp < 10000 && array[tmp] == tmp VAL [array={3:0}, array[tmp]=4, index=10000, tmp < 10000 && array[tmp] == tmp=0, tmp=0] [L48] CALL __VERIFIER_assert(tmp < 10000 && array[tmp] == tmp) VAL [\old(cond)=0] [L25] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L26] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 16 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-04-01 11:04:47,269 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...