/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 IntervalDomain -i ../sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:02:29,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:02:29,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:02:29,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:02:29,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:02:29,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:02:29,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:02:29,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:02:29,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:02:29,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:02:29,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:02:29,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:02:29,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:02:29,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:02:29,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:02:29,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:02:29,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:02:29,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:02:29,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:02:29,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:02:29,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:02:29,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:02:29,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:02:29,266 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:02:29,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 23:02:29,277 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 23:02:29,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 23:02:29,278 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 23:02:29,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 23:02:29,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 23:02:29,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:02:29,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:02:29,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:02:29,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:02:29,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:02:29,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:02:29,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:02:29,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:02:29,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:02:29,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:02:29,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:02:29,288 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 23:02:29,324 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:02:29,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:02:29,324 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:02:29,324 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:02:29,325 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:02:29,325 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:02:29,325 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:02:29,326 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:02:29,326 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:02:29,326 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:02:29,327 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:02:29,327 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:02:29,327 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:02:29,327 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:02:29,327 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:02:29,327 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:02:29,328 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:02:29,328 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:02:29,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:02:29,328 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:02:29,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:02:29,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:02:29,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:02:29,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:02:29,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:02:29,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:02:29,330 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:02:29,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:02:29,330 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:02:29,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:02:29,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:02:29,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:02:29,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:02:29,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:02:29,331 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:02:29,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:02:29,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:02:29,332 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:02:29,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:02:29,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:02:29,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:02:29,332 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:02:29,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:02:29,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:02:29,558 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:02:29,559 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:02:29,560 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:02:29,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2023-03-31 23:02:30,703 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:02:30,854 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:02:30,855 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gsv2008.c.i.p+cfa-reducer.c [2023-03-31 23:02:30,860 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea5a6a53d/aacc4fc2d9084975b6d0d292ad053b4c/FLAG9638207b5 [2023-03-31 23:02:30,869 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea5a6a53d/aacc4fc2d9084975b6d0d292ad053b4c [2023-03-31 23:02:30,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:02:30,874 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:02:30,874 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:02:30,875 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:02:30,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:02:30,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:02:30" (1/1) ... [2023-03-31 23:02:30,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a01488 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:30, skipping insertion in model container [2023-03-31 23:02:30,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:02:30" (1/1) ... [2023-03-31 23:02:30,885 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:02:30,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:02:31,006 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-lit/gsv2008.c.i.p+cfa-reducer.c[989,1002] [2023-03-31 23:02:31,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:02:31,015 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:02:31,025 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-lit/gsv2008.c.i.p+cfa-reducer.c[989,1002] [2023-03-31 23:02:31,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:02:31,035 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:02:31,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:31 WrapperNode [2023-03-31 23:02:31,036 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:02:31,036 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:02:31,036 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:02:31,037 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:02:31,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:31" (1/1) ... [2023-03-31 23:02:31,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:31" (1/1) ... [2023-03-31 23:02:31,048 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:31" (1/1) ... [2023-03-31 23:02:31,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:31" (1/1) ... [2023-03-31 23:02:31,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:31" (1/1) ... [2023-03-31 23:02:31,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:31" (1/1) ... [2023-03-31 23:02:31,054 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:31" (1/1) ... [2023-03-31 23:02:31,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:31" (1/1) ... [2023-03-31 23:02:31,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:02:31,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:02:31,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:02:31,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:02:31,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:31" (1/1) ... [2023-03-31 23:02:31,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:02:31,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:02:31,081 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 23:02:31,102 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 23:02:31,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:02:31,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:02:31,117 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:02:31,117 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 23:02:31,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:02:31,117 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:02:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:02:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:02:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:02:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 23:02:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 23:02:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 23:02:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:02:31,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:02:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:02:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:02:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:02:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:02:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:02:31,177 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:02:31,179 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:02:31,302 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:02:31,326 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:02:31,326 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 23:02:31,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:02:31 BoogieIcfgContainer [2023-03-31 23:02:31,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:02:31,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:02:31,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:02:31,334 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:02:31,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:02:30" (1/3) ... [2023-03-31 23:02:31,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3154bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:02:31, skipping insertion in model container [2023-03-31 23:02:31,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:02:31" (2/3) ... [2023-03-31 23:02:31,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3154bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:02:31, skipping insertion in model container [2023-03-31 23:02:31,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:02:31" (3/3) ... [2023-03-31 23:02:31,336 INFO L112 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.p+cfa-reducer.c [2023-03-31 23:02:31,352 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:02:31,352 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:02:31,390 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:02:31,396 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;@7748af38, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:02:31,396 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:02:31,400 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 23:02:31,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-03-31 23:02:31,406 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:02:31,407 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:02:31,407 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:02:31,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:02:31,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1021690414, now seen corresponding path program 1 times [2023-03-31 23:02:31,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:02:31,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353695847] [2023-03-31 23:02:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:02:31,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:02:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:02:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:02:31,584 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:02:31,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353695847] [2023-03-31 23:02:31,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353695847] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:02:31,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:02:31,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:02:31,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602506731] [2023-03-31 23:02:31,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:02:31,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:02:31,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:02:31,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:02:31,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:02:31,616 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:02:31,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:02:31,637 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2023-03-31 23:02:31,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:02:31,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-03-31 23:02:31,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:02:31,645 INFO L225 Difference]: With dead ends: 25 [2023-03-31 23:02:31,645 INFO L226 Difference]: Without dead ends: 12 [2023-03-31 23:02:31,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:02:31,651 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:02:31,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 24 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:02:31,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-03-31 23:02:31,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-03-31 23:02:31,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:02:31,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-03-31 23:02:31,678 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2023-03-31 23:02:31,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:02:31,679 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-03-31 23:02:31,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:02:31,679 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-03-31 23:02:31,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 23:02:31,680 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:02:31,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:02:31,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:02:31,681 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:02:31,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:02:31,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1607694230, now seen corresponding path program 1 times [2023-03-31 23:02:31,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:02:31,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628087105] [2023-03-31 23:02:31,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:02:31,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:02:31,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:02:31,900 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:02:31,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:02:31,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628087105] [2023-03-31 23:02:31,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628087105] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:02:31,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975224592] [2023-03-31 23:02:31,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:02:31,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:02:31,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:02:31,905 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 23:02:31,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 23:02:31,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:02:31,959 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2023-03-31 23:02:31,963 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:02:32,025 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:02:32,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:02:32,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 23:02:32,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975224592] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-31 23:02:32,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [291018671] [2023-03-31 23:02:32,106 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2023-03-31 23:02:32,107 INFO L166 IcfgInterpreter]: Building call graph [2023-03-31 23:02:32,115 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-03-31 23:02:32,119 INFO L176 IcfgInterpreter]: Starting interpretation [2023-03-31 23:02:32,120 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-03-31 23:02:32,241 INFO L197 IcfgInterpreter]: Interpreting procedure main with input of size 14 for LOIs [2023-03-31 23:02:32,287 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 13 for LOIs [2023-03-31 23:02:32,297 INFO L180 IcfgInterpreter]: Interpretation finished [2023-03-31 23:02:32,585 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '141#(and (<= 0 main_~main__x~0) (= main_~__VERIFIER_assert__cond~0 0) (= main_~__tmp_1~0 0) (= ~__return_144~0 0) (<= main_~main__y~0 0) (= |#NULL.offset| 0) (<= 0 (+ 1000 main_~main__y~0)) (= |old(~__return_144~0)| 0) (<= 0 |#StackHeapBarrier|) (= ~__return_main~0 0) (= |#NULL.base| 0))' at error location [2023-03-31 23:02:32,586 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-03-31 23:02:32,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-31 23:02:32,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-03-31 23:02:32,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113763669] [2023-03-31 23:02:32,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-31 23:02:32,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-31 23:02:32,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:02:32,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-31 23:02:32,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2023-03-31 23:02:32,597 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:02:32,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:02:32,644 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2023-03-31 23:02:32,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 23:02:32,644 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-03-31 23:02:32,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:02:32,644 INFO L225 Difference]: With dead ends: 14 [2023-03-31 23:02:32,644 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 23:02:32,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2023-03-31 23:02:32,646 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:02:32,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 21 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:02:32,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 23:02:32,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 23:02:32,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-03-31 23:02:32,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 23:02:32,652 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2023-03-31 23:02:32,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:02:32,652 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 23:02:32,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 23:02:32,653 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 23:02:32,653 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 23:02:32,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 23:02:32,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 23:02:32,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:02:32,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 23:02:32,878 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2023-03-31 23:02:32,879 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 4) no Hoare annotation was computed. [2023-03-31 23:02:32,879 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(lines 6 8) no Hoare annotation was computed. [2023-03-31 23:02:32,879 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2023-03-31 23:02:32,879 INFO L899 garLoopResultBuilder]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 48) no Hoare annotation was computed. [2023-03-31 23:02:32,879 INFO L895 garLoopResultBuilder]: At program point $Ultimate##6(lines 32 57) the Hoare annotation is: (or (< main_~main__x~0 0) (< 0 main_~main__y~0)) [2023-03-31 23:02:32,879 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 58) no Hoare annotation was computed. [2023-03-31 23:02:32,880 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 13 60) no Hoare annotation was computed. [2023-03-31 23:02:32,880 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 59) no Hoare annotation was computed. [2023-03-31 23:02:32,880 INFO L899 garLoopResultBuilder]: For program point L48(line 48) no Hoare annotation was computed. [2023-03-31 23:02:32,880 INFO L899 garLoopResultBuilder]: For program point L46(lines 46 55) no Hoare annotation was computed. [2023-03-31 23:02:32,880 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 13 60) no Hoare annotation was computed. [2023-03-31 23:02:32,880 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 13 60) the Hoare annotation is: true [2023-03-31 23:02:32,880 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 23:02:32,880 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 23:02:32,880 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 23:02:32,881 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-03-31 23:02:32,881 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 23:02:32,881 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 23:02:32,885 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-03-31 23:02:32,886 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 23:02:32,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 11:02:32 BoogieIcfgContainer [2023-03-31 23:02:32,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 23:02:32,898 INFO L158 Benchmark]: Toolchain (without parser) took 2023.55ms. Allocated memory is still 269.5MB. Free memory was 223.0MB in the beginning and 179.3MB in the end (delta: 43.7MB). Peak memory consumption was 45.0MB. Max. memory is 8.0GB. [2023-03-31 23:02:32,901 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 174.1MB. Free memory is still 119.1MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:02:32,902 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.50ms. Allocated memory is still 269.5MB. Free memory was 223.0MB in the beginning and 212.7MB in the end (delta: 10.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2023-03-31 23:02:32,903 INFO L158 Benchmark]: Boogie Preprocessor took 19.15ms. Allocated memory is still 269.5MB. Free memory was 212.7MB in the beginning and 211.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-03-31 23:02:32,903 INFO L158 Benchmark]: RCFGBuilder took 273.09ms. Allocated memory is still 269.5MB. Free memory was 211.2MB in the beginning and 200.2MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-03-31 23:02:32,904 INFO L158 Benchmark]: TraceAbstraction took 1565.62ms. Allocated memory is still 269.5MB. Free memory was 199.1MB in the beginning and 179.3MB in the end (delta: 19.9MB). Peak memory consumption was 20.9MB. Max. memory is 8.0GB. [2023-03-31 23:02:32,905 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 174.1MB. Free memory is still 119.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 161.50ms. Allocated memory is still 269.5MB. Free memory was 223.0MB in the beginning and 212.7MB in the end (delta: 10.3MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.15ms. Allocated memory is still 269.5MB. Free memory was 212.7MB in the beginning and 211.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 273.09ms. Allocated memory is still 269.5MB. Free memory was 211.2MB in the beginning and 200.2MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1565.62ms. Allocated memory is still 269.5MB. Free memory was 199.1MB in the beginning and 179.3MB in the end (delta: 19.9MB). Peak memory consumption was 20.9MB. 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 - PositiveResult [Line: 48]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 24 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 21 mSDtfsCounter, 26 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 10, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 5 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 103 SizeOfPredicates, 4 NumberOfNonLiveVariables, 73 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: main__x < 0 || 0 < main__y RESULT: Ultimate proved your program to be correct! [2023-03-31 23:02:32,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...