./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark25_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/loop-zilu/benchmark25_linear.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1130d3df8d11f3be805af96558350a1bd8faf89323cc035b32267e4a54793a8c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 19:32:17,993 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 19:32:17,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 19:32:18,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 19:32:18,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 19:32:18,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 19:32:18,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 19:32:18,051 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 19:32:18,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 19:32:18,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 19:32:18,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 19:32:18,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 19:32:18,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 19:32:18,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 19:32:18,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 19:32:18,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 19:32:18,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 19:32:18,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 19:32:18,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 19:32:18,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 19:32:18,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 19:32:18,083 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 19:32:18,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 19:32:18,086 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 19:32:18,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 19:32:18,090 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 19:32:18,091 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 19:32:18,092 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 19:32:18,093 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 19:32:18,094 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 19:32:18,094 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 19:32:18,095 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 19:32:18,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 19:32:18,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 19:32:18,098 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 19:32:18,098 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 19:32:18,099 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 19:32:18,099 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 19:32:18,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 19:32:18,100 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 19:32:18,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 19:32:18,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-22 19:32:18,137 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 19:32:18,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 19:32:18,140 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 19:32:18,140 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 19:32:18,141 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 19:32:18,141 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 19:32:18,142 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 19:32:18,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 19:32:18,142 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 19:32:18,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 19:32:18,143 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 19:32:18,143 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-22 19:32:18,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 19:32:18,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 19:32:18,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 19:32:18,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 19:32:18,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 19:32:18,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 19:32:18,145 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-22 19:32:18,145 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 19:32:18,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 19:32:18,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 19:32:18,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 19:32:18,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 19:32:18,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 19:32:18,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 19:32:18,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 19:32:18,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 19:32:18,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 19:32:18,147 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 19:32:18,147 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 19:32:18,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 19:32:18,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 19:32:18,148 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 19:32:18,148 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1130d3df8d11f3be805af96558350a1bd8faf89323cc035b32267e4a54793a8c [2021-12-22 19:32:18,337 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 19:32:18,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 19:32:18,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 19:32:18,366 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 19:32:18,366 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 19:32:18,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark25_linear.i [2021-12-22 19:32:18,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff4896c73/3ffd5814d6a240439383e2d03dec7df7/FLAG5043fae95 [2021-12-22 19:32:18,771 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 19:32:18,772 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark25_linear.i [2021-12-22 19:32:18,778 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff4896c73/3ffd5814d6a240439383e2d03dec7df7/FLAG5043fae95 [2021-12-22 19:32:19,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff4896c73/3ffd5814d6a240439383e2d03dec7df7 [2021-12-22 19:32:19,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 19:32:19,203 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 19:32:19,204 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 19:32:19,204 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 19:32:19,206 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 19:32:19,207 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:32:19" (1/1) ... [2021-12-22 19:32:19,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d3a4589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:32:19, skipping insertion in model container [2021-12-22 19:32:19,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 07:32:19" (1/1) ... [2021-12-22 19:32:19,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 19:32:19,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 19:32:19,314 WARN L230 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-zilu/benchmark25_linear.i[868,881] [2021-12-22 19:32:19,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:32:19,329 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 19:32:19,338 WARN L230 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-zilu/benchmark25_linear.i[868,881] [2021-12-22 19:32:19,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 19:32:19,348 INFO L208 MainTranslator]: Completed translation [2021-12-22 19:32:19,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:32:19 WrapperNode [2021-12-22 19:32:19,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 19:32:19,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 19:32:19,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 19:32:19,350 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 19:32:19,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:32:19" (1/1) ... [2021-12-22 19:32:19,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:32:19" (1/1) ... [2021-12-22 19:32:19,371 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 28 [2021-12-22 19:32:19,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 19:32:19,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 19:32:19,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 19:32:19,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 19:32:19,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:32:19" (1/1) ... [2021-12-22 19:32:19,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:32:19" (1/1) ... [2021-12-22 19:32:19,378 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:32:19" (1/1) ... [2021-12-22 19:32:19,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:32:19" (1/1) ... [2021-12-22 19:32:19,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:32:19" (1/1) ... [2021-12-22 19:32:19,384 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:32:19" (1/1) ... [2021-12-22 19:32:19,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:32:19" (1/1) ... [2021-12-22 19:32:19,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 19:32:19,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 19:32:19,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 19:32:19,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 19:32:19,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:32:19" (1/1) ... [2021-12-22 19:32:19,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 19:32:19,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 19:32:19,428 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) [2021-12-22 19:32:19,434 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 [2021-12-22 19:32:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 19:32:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 19:32:19,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 19:32:19,455 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 19:32:19,494 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 19:32:19,495 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 19:32:19,602 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 19:32:19,606 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 19:32:19,607 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 19:32:19,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:32:19 BoogieIcfgContainer [2021-12-22 19:32:19,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 19:32:19,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 19:32:19,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 19:32:19,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 19:32:19,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 07:32:19" (1/3) ... [2021-12-22 19:32:19,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c4e409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:32:19, skipping insertion in model container [2021-12-22 19:32:19,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 07:32:19" (2/3) ... [2021-12-22 19:32:19,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78c4e409 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 07:32:19, skipping insertion in model container [2021-12-22 19:32:19,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:32:19" (3/3) ... [2021-12-22 19:32:19,616 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark25_linear.i [2021-12-22 19:32:19,621 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 19:32:19,621 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-22 19:32:19,663 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 19:32:19,670 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 19:32:19,670 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-22 19:32:19,682 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 13 states have internal predecessors, (17), 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) [2021-12-22 19:32:19,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-22 19:32:19,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:32:19,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-22 19:32:19,705 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-22 19:32:19,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:32:19,710 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-12-22 19:32:19,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:32:19,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732299338] [2021-12-22 19:32:19,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:32:19,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:32:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:32:19,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:32:19,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:32:19,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732299338] [2021-12-22 19:32:19,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732299338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:32:19,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:32:19,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:32:19,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609284140] [2021-12-22 19:32:19,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:32:19,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:32:19,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:32:19,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:32:19,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:32:19,890 INFO L87 Difference]: Start difference. First operand has 14 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 13 states have internal predecessors, (17), 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-22 19:32:19,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:32:19,929 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2021-12-22 19:32:19,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:32:19,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) Word has length 5 [2021-12-22 19:32:19,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:32:19,937 INFO L225 Difference]: With dead ends: 24 [2021-12-22 19:32:19,938 INFO L226 Difference]: Without dead ends: 11 [2021-12-22 19:32:19,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:32:19,945 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:32:19,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 16 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:32:19,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-12-22 19:32:19,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2021-12-22 19:32:19,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.25) internal successors, (10), 9 states have internal predecessors, (10), 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) [2021-12-22 19:32:19,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-12-22 19:32:19,971 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 5 [2021-12-22 19:32:19,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:32:19,971 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-12-22 19:32:19,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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) [2021-12-22 19:32:19,971 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-12-22 19:32:19,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-22 19:32:19,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:32:19,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-22 19:32:19,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 19:32:19,975 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-22 19:32:19,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:32:19,975 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-12-22 19:32:19,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:32:19,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268048321] [2021-12-22 19:32:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:32:19,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:32:19,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:32:19,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 19:32:19,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:32:19,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268048321] [2021-12-22 19:32:20,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268048321] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:32:20,000 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:32:20,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:32:20,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886265611] [2021-12-22 19:32:20,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:32:20,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:32:20,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:32:20,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:32:20,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:32:20,004 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-22 19:32:20,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:32:20,020 INFO L93 Difference]: Finished difference Result 10 states and 10 transitions. [2021-12-22 19:32:20,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:32:20,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2021-12-22 19:32:20,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:32:20,022 INFO L225 Difference]: With dead ends: 10 [2021-12-22 19:32:20,022 INFO L226 Difference]: Without dead ends: 9 [2021-12-22 19:32:20,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:32:20,027 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:32:20,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 3 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:32:20,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-22 19:32:20,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-22 19:32:20,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-12-22 19:32:20,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-12-22 19:32:20,033 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-12-22 19:32:20,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:32:20,034 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-12-22 19:32:20,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-12-22 19:32:20,034 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-12-22 19:32:20,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-22 19:32:20,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 19:32:20,036 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-12-22 19:32:20,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 19:32:20,037 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-12-22 19:32:20,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 19:32:20,037 INFO L85 PathProgramCache]: Analyzing trace with hash 183289263, now seen corresponding path program 1 times [2021-12-22 19:32:20,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 19:32:20,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043782182] [2021-12-22 19:32:20,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 19:32:20,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 19:32:20,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 19:32:20,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-22 19:32:20,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 19:32:20,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043782182] [2021-12-22 19:32:20,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2043782182] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 19:32:20,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 19:32:20,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-22 19:32:20,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592655211] [2021-12-22 19:32:20,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 19:32:20,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 19:32:20,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 19:32:20,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 19:32:20,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:32:20,060 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-22 19:32:20,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 19:32:20,069 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-12-22 19:32:20,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 19:32:20,070 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2021-12-22 19:32:20,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 19:32:20,070 INFO L225 Difference]: With dead ends: 9 [2021-12-22 19:32:20,070 INFO L226 Difference]: Without dead ends: 0 [2021-12-22 19:32:20,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 19:32:20,078 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 19:32:20,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 4 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 19:32:20,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-22 19:32:20,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-22 19:32:20,079 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) [2021-12-22 19:32:20,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-22 19:32:20,080 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-12-22 19:32:20,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 19:32:20,080 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-22 19:32:20,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-12-22 19:32:20,080 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-22 19:32:20,080 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-22 19:32:20,083 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2021-12-22 19:32:20,083 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2021-12-22 19:32:20,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 19:32:20,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-22 19:32:20,099 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-12-22 19:32:20,099 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-12-22 19:32:20,099 INFO L858 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-12-22 19:32:20,099 INFO L858 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-12-22 19:32:20,099 INFO L858 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-12-22 19:32:20,100 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-12-22 19:32:20,100 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-12-22 19:32:20,100 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 23) no Hoare annotation was computed. [2021-12-22 19:32:20,100 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-12-22 19:32:20,100 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-12-22 19:32:20,101 INFO L861 garLoopResultBuilder]: At program point L26(lines 19 27) the Hoare annotation is: true [2021-12-22 19:32:20,102 INFO L854 garLoopResultBuilder]: At program point L22-2(lines 22 24) the Hoare annotation is: (<= 0 (+ |ULTIMATE.start_main_~x~0#1| 2147483648)) [2021-12-22 19:32:20,102 INFO L858 garLoopResultBuilder]: For program point L22-3(lines 22 24) no Hoare annotation was computed. [2021-12-22 19:32:20,102 INFO L858 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-12-22 19:32:20,108 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-12-22 19:32:20,109 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-22 19:32:20,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 07:32:20 BoogieIcfgContainer [2021-12-22 19:32:20,124 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-22 19:32:20,124 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-22 19:32:20,124 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-22 19:32:20,125 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-22 19:32:20,125 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 07:32:19" (3/4) ... [2021-12-22 19:32:20,127 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-22 19:32:20,132 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-12-22 19:32:20,133 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-22 19:32:20,133 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-22 19:32:20,133 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-22 19:32:20,156 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-22 19:32:20,157 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-22 19:32:20,157 INFO L158 Benchmark]: Toolchain (without parser) took 953.76ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 70.8MB in the beginning and 56.2MB in the end (delta: 14.6MB). Peak memory consumption was 34.8MB. Max. memory is 16.1GB. [2021-12-22 19:32:20,157 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 100.7MB. Free memory was 58.1MB in the beginning and 58.0MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:32:20,158 INFO L158 Benchmark]: CACSL2BoogieTranslator took 145.03ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 70.4MB in the beginning and 100.3MB in the end (delta: -29.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-22 19:32:20,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.66ms. Allocated memory is still 123.7MB. Free memory was 100.3MB in the beginning and 98.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 19:32:20,158 INFO L158 Benchmark]: Boogie Preprocessor took 15.51ms. Allocated memory is still 123.7MB. Free memory was 98.7MB in the beginning and 97.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-22 19:32:20,158 INFO L158 Benchmark]: RCFGBuilder took 220.83ms. Allocated memory is still 123.7MB. Free memory was 97.5MB in the beginning and 88.3MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-22 19:32:20,158 INFO L158 Benchmark]: TraceAbstraction took 513.94ms. Allocated memory is still 123.7MB. Free memory was 87.7MB in the beginning and 58.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2021-12-22 19:32:20,159 INFO L158 Benchmark]: Witness Printer took 32.18ms. Allocated memory is still 123.7MB. Free memory was 58.3MB in the beginning and 56.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-22 19:32:20,160 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 100.7MB. Free memory was 58.1MB in the beginning and 58.0MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 145.03ms. Allocated memory was 100.7MB in the beginning and 123.7MB in the end (delta: 23.1MB). Free memory was 70.4MB in the beginning and 100.3MB in the end (delta: -29.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.66ms. Allocated memory is still 123.7MB. Free memory was 100.3MB in the beginning and 98.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.51ms. Allocated memory is still 123.7MB. Free memory was 98.7MB in the beginning and 97.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 220.83ms. Allocated memory is still 123.7MB. Free memory was 97.5MB in the beginning and 88.3MB in the end (delta: 9.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 513.94ms. Allocated memory is still 123.7MB. Free memory was 87.7MB in the beginning and 58.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 32.18ms. Allocated memory is still 123.7MB. Free memory was 58.3MB in the beginning and 56.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 23]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 16 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 6 HoareAnnotationTreeSize, 2 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 42 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 2/2 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 2 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 <= x + 2147483648 RESULT: Ultimate proved your program to be correct! [2021-12-22 19:32:20,187 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE