/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-acceleration/overflow_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 23:00:13,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 23:00:13,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 23:00:13,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 23:00:13,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 23:00:13,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 23:00:13,161 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 23:00:13,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 23:00:13,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 23:00:13,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 23:00:13,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 23:00:13,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 23:00:13,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 23:00:13,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 23:00:13,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 23:00:13,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 23:00:13,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 23:00:13,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 23:00:13,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 23:00:13,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 23:00:13,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 23:00:13,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 23:00:13,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 23:00:13,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 23:00:13,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 23:00:13,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 23:00:13,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 23:00:13,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 23:00:13,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 23:00:13,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 23:00:13,204 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 23:00:13,205 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 23:00:13,206 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 23:00:13,207 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 23:00:13,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 23:00:13,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 23:00:13,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 23:00:13,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 23:00:13,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 23:00:13,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 23:00:13,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 23:00:13,211 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 23:00:13,242 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 23:00:13,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 23:00:13,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 23:00:13,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 23:00:13,244 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 23:00:13,244 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 23:00:13,244 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 23:00:13,245 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 23:00:13,245 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 23:00:13,245 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 23:00:13,246 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 23:00:13,246 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 23:00:13,246 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 23:00:13,246 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 23:00:13,246 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 23:00:13,246 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 23:00:13,247 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 23:00:13,247 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 23:00:13,247 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 23:00:13,247 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 23:00:13,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 23:00:13,248 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 23:00:13,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 23:00:13,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 23:00:13,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 23:00:13,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 23:00:13,249 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 23:00:13,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 23:00:13,249 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 23:00:13,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 23:00:13,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 23:00:13,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 23:00:13,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:00:13,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 23:00:13,250 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 23:00:13,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 23:00:13,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 23:00:13,250 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 23:00:13,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 23:00:13,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 23:00:13,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 23:00:13,251 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 23:00:13,483 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 23:00:13,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 23:00:13,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 23:00:13,508 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 23:00:13,508 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 23:00:13,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/overflow_1-1.c [2023-03-31 23:00:14,725 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 23:00:14,931 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 23:00:14,932 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/overflow_1-1.c [2023-03-31 23:00:14,936 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b763c17a9/fda7e6275999431fbe03afda16ed69f2/FLAG161f133ce [2023-03-31 23:00:14,952 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b763c17a9/fda7e6275999431fbe03afda16ed69f2 [2023-03-31 23:00:14,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 23:00:14,957 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 23:00:14,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 23:00:14,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 23:00:14,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 23:00:14,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:00:14" (1/1) ... [2023-03-31 23:00:14,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62838a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:00:14, skipping insertion in model container [2023-03-31 23:00:14,965 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 11:00:14" (1/1) ... [2023-03-31 23:00:14,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 23:00:14,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 23:00:15,085 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-acceleration/overflow_1-1.c[324,337] [2023-03-31 23:00:15,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:00:15,102 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 23:00:15,113 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-acceleration/overflow_1-1.c[324,337] [2023-03-31 23:00:15,115 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 23:00:15,125 INFO L208 MainTranslator]: Completed translation [2023-03-31 23:00:15,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:00:15 WrapperNode [2023-03-31 23:00:15,126 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 23:00:15,126 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 23:00:15,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 23:00:15,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 23:00:15,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:00:15" (1/1) ... [2023-03-31 23:00:15,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:00:15" (1/1) ... [2023-03-31 23:00:15,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:00:15" (1/1) ... [2023-03-31 23:00:15,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:00:15" (1/1) ... [2023-03-31 23:00:15,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:00:15" (1/1) ... [2023-03-31 23:00:15,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:00:15" (1/1) ... [2023-03-31 23:00:15,145 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:00:15" (1/1) ... [2023-03-31 23:00:15,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:00:15" (1/1) ... [2023-03-31 23:00:15,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 23:00:15,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 23:00:15,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 23:00:15,148 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 23:00:15,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:00:15" (1/1) ... [2023-03-31 23:00:15,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 23:00:15,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:00:15,182 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 23:00:15,191 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 23:00:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 23:00:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 23:00:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 23:00:15,219 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-03-31 23:00:15,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 23:00:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 23:00:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 23:00:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 23:00:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 23:00:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-03-31 23:00:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 23:00:15,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 23:00:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 23:00:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 23:00:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 23:00:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 23:00:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 23:00:15,277 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 23:00:15,279 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 23:00:15,354 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 23:00:15,371 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 23:00:15,371 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-31 23:00:15,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:00:15 BoogieIcfgContainer [2023-03-31 23:00:15,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 23:00:15,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 23:00:15,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 23:00:15,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 23:00:15,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 11:00:14" (1/3) ... [2023-03-31 23:00:15,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0f017c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:00:15, skipping insertion in model container [2023-03-31 23:00:15,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 11:00:15" (2/3) ... [2023-03-31 23:00:15,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f0f017c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 11:00:15, skipping insertion in model container [2023-03-31 23:00:15,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 11:00:15" (3/3) ... [2023-03-31 23:00:15,382 INFO L112 eAbstractionObserver]: Analyzing ICFG overflow_1-1.c [2023-03-31 23:00:15,398 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 23:00:15,398 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 23:00:15,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 23:00:15,449 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;@641d35c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 23:00:15,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 23:00:15,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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) [2023-03-31 23:00:15,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-03-31 23:00:15,463 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:00:15,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:00:15,464 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:00:15,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:00:15,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1387562718, now seen corresponding path program 1 times [2023-03-31 23:00:15,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:00:15,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258760890] [2023-03-31 23:00:15,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:00:15,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:00:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:00:15,756 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 23:00:15,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:00:15,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258760890] [2023-03-31 23:00:15,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258760890] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 23:00:15,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 23:00:15,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-31 23:00:15,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089772401] [2023-03-31 23:00:15,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:00:15,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-31 23:00:15,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:00:15,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-31 23:00:15,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-03-31 23:00:15,794 INFO L87 Difference]: Start difference. First operand has 17 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-03-31 23:00:15,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:00:15,847 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2023-03-31 23:00:15,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-31 23:00:15,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 10 [2023-03-31 23:00:15,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:00:15,856 INFO L225 Difference]: With dead ends: 29 [2023-03-31 23:00:15,856 INFO L226 Difference]: Without dead ends: 12 [2023-03-31 23:00:15,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 23:00:15,863 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:00:15,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:00:15,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-03-31 23:00:15,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2023-03-31 23:00:15,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2023-03-31 23:00:15,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2023-03-31 23:00:15,893 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2023-03-31 23:00:15,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:00:15,894 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2023-03-31 23:00:15,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-03-31 23:00:15,894 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2023-03-31 23:00:15,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-03-31 23:00:15,895 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 23:00:15,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 23:00:15,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 23:00:15,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 23:00:15,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 23:00:15,897 INFO L85 PathProgramCache]: Analyzing trace with hash -646819446, now seen corresponding path program 1 times [2023-03-31 23:00:15,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 23:00:15,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983688093] [2023-03-31 23:00:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:00:15,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 23:00:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:00:16,027 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 23:00:16,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 23:00:16,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983688093] [2023-03-31 23:00:16,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983688093] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 23:00:16,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650954009] [2023-03-31 23:00:16,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 23:00:16,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 23:00:16,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 23:00:16,041 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 23:00:16,062 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 23:00:16,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 23:00:16,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2023-03-31 23:00:16,104 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 23:00:16,218 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 23:00:16,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-31 23:00:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-03-31 23:00:16,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650954009] provided 1 perfect and 1 imperfect interpolant sequences [2023-03-31 23:00:16,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-03-31 23:00:16,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 6] total 10 [2023-03-31 23:00:16,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082333014] [2023-03-31 23:00:16,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 23:00:16,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 23:00:16,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 23:00:16,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 23:00:16,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-03-31 23:00:16,287 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 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) [2023-03-31 23:00:16,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 23:00:16,326 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2023-03-31 23:00:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 23:00:16,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 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 [2023-03-31 23:00:16,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 23:00:16,327 INFO L225 Difference]: With dead ends: 12 [2023-03-31 23:00:16,327 INFO L226 Difference]: Without dead ends: 0 [2023-03-31 23:00:16,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-03-31 23:00:16,329 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-03-31 23:00:16,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 16 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-03-31 23:00:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-03-31 23:00:16,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-03-31 23:00:16,331 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 23:00:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-03-31 23:00:16,331 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2023-03-31 23:00:16,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 23:00:16,332 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-03-31 23:00:16,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 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) [2023-03-31 23:00:16,332 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-03-31 23:00:16,332 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-03-31 23:00:16,334 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-03-31 23:00:16,350 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-31 23:00:16,543 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 23:00:16,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-03-31 23:00:16,558 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2023-03-31 23:00:16,559 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line 3) no Hoare annotation was computed. [2023-03-31 23:00:16,559 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 23:00:16,559 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2023-03-31 23:00:16,559 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-03-31 23:00:16,559 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2023-03-31 23:00:16,559 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-03-31 23:00:16,560 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(line -1) the Hoare annotation is: true [2023-03-31 23:00:16,560 INFO L899 garLoopResultBuilder]: For program point mainEXIT(lines 12 20) no Hoare annotation was computed. [2023-03-31 23:00:16,560 INFO L895 garLoopResultBuilder]: At program point L15-2(lines 15 17) the Hoare annotation is: (= (mod main_~x~0 2) 0) [2023-03-31 23:00:16,560 INFO L899 garLoopResultBuilder]: For program point mainFINAL(lines 12 20) no Hoare annotation was computed. [2023-03-31 23:00:16,560 INFO L895 garLoopResultBuilder]: At program point L15-3(lines 15 17) the Hoare annotation is: (= (mod main_~x~0 2) 0) [2023-03-31 23:00:16,560 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 12 20) the Hoare annotation is: true [2023-03-31 23:00:16,561 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2023-03-31 23:00:16,561 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 5 10) the Hoare annotation is: true [2023-03-31 23:00:16,561 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-03-31 23:00:16,561 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2023-03-31 23:00:16,561 INFO L899 garLoopResultBuilder]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2023-03-31 23:00:16,561 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2023-03-31 23:00:16,565 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-03-31 23:00:16,567 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 23:00:16,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 11:00:16 BoogieIcfgContainer [2023-03-31 23:00:16,578 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 23:00:16,579 INFO L158 Benchmark]: Toolchain (without parser) took 1621.94ms. Allocated memory is still 294.6MB. Free memory was 246.6MB in the beginning and 238.8MB in the end (delta: 7.8MB). Peak memory consumption was 9.3MB. Max. memory is 8.0GB. [2023-03-31 23:00:16,579 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory was 138.4MB in the beginning and 138.3MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:00:16,580 INFO L158 Benchmark]: CACSL2BoogieTranslator took 166.44ms. Allocated memory is still 294.6MB. Free memory was 246.6MB in the beginning and 236.8MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 23:00:16,580 INFO L158 Benchmark]: Boogie Preprocessor took 20.46ms. Allocated memory is still 294.6MB. Free memory was 236.8MB in the beginning and 235.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-03-31 23:00:16,580 INFO L158 Benchmark]: RCFGBuilder took 226.45ms. Allocated memory is still 294.6MB. Free memory was 235.4MB in the beginning and 225.3MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-03-31 23:00:16,581 INFO L158 Benchmark]: TraceAbstraction took 1201.96ms. Allocated memory is still 294.6MB. Free memory was 224.6MB in the beginning and 238.8MB in the end (delta: -14.2MB). There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 23:00:16,582 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory was 138.4MB in the beginning and 138.3MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 166.44ms. Allocated memory is still 294.6MB. Free memory was 246.6MB in the beginning and 236.8MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.46ms. Allocated memory is still 294.6MB. Free memory was 236.8MB in the beginning and 235.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 226.45ms. Allocated memory is still 294.6MB. Free memory was 235.4MB in the beginning and 225.3MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1201.96ms. Allocated memory is still 294.6MB. Free memory was 224.6MB in the beginning and 238.8MB in the end (delta: -14.2MB). There was no memory consumed. 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: 7]: 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: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 42 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 19 mSDtfsCounter, 21 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 8, 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, 7 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 15 HoareAnnotationTreeSize, 8 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 101 SizeOfPredicates, 1 NumberOfNonLiveVariables, 53 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 1/3 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: 15]: Loop Invariant Derived loop invariant: x % 2 == 0 RESULT: Ultimate proved your program to be correct! [2023-03-31 23:00:16,606 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...