./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark47_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c3fed411 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/benchmark47_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 039c983cd55187ea3968542120c3863142c878775a3be18d8ccc83df12199e4d --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-19 15:31:10,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-19 15:31:10,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-19 15:31:10,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-19 15:31:10,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-19 15:31:10,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-19 15:31:10,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-19 15:31:10,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-19 15:31:10,388 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-19 15:31:10,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-19 15:31:10,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-19 15:31:10,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-19 15:31:10,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-19 15:31:10,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-19 15:31:10,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-19 15:31:10,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-19 15:31:10,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-19 15:31:10,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-19 15:31:10,405 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-19 15:31:10,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-19 15:31:10,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-19 15:31:10,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-19 15:31:10,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-19 15:31:10,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-19 15:31:10,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-19 15:31:10,420 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-19 15:31:10,420 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-19 15:31:10,422 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-19 15:31:10,422 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-19 15:31:10,423 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-19 15:31:10,423 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-19 15:31:10,424 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-19 15:31:10,426 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-19 15:31:10,427 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-19 15:31:10,428 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-19 15:31:10,428 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-19 15:31:10,428 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-19 15:31:10,429 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-19 15:31:10,429 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-19 15:31:10,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-19 15:31:10,431 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-19 15:31:10,432 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-19 15:31:10,460 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-19 15:31:10,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-19 15:31:10,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-19 15:31:10,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-19 15:31:10,462 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-19 15:31:10,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-19 15:31:10,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-19 15:31:10,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-19 15:31:10,463 INFO L138 SettingsManager]: * Use SBE=true [2021-12-19 15:31:10,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-19 15:31:10,464 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-19 15:31:10,464 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-19 15:31:10,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-19 15:31:10,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-19 15:31:10,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-19 15:31:10,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-19 15:31:10,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-19 15:31:10,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-19 15:31:10,466 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-19 15:31:10,466 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-19 15:31:10,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-19 15:31:10,466 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-19 15:31:10,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-19 15:31:10,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-19 15:31:10,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-19 15:31:10,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-19 15:31:10,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:31:10,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-19 15:31:10,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-19 15:31:10,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-19 15:31:10,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-19 15:31:10,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-19 15:31:10,469 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-19 15:31:10,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-19 15:31:10,469 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 039c983cd55187ea3968542120c3863142c878775a3be18d8ccc83df12199e4d [2021-12-19 15:31:10,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-19 15:31:10,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-19 15:31:10,730 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-19 15:31:10,731 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-19 15:31:10,732 INFO L275 PluginConnector]: CDTParser initialized [2021-12-19 15:31:10,733 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark47_linear.i [2021-12-19 15:31:10,791 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e52964a2/4768cd55146c4824a2776e2ed1b03350/FLAGa459bc5a4 [2021-12-19 15:31:11,186 INFO L306 CDTParser]: Found 1 translation units. [2021-12-19 15:31:11,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark47_linear.i [2021-12-19 15:31:11,195 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e52964a2/4768cd55146c4824a2776e2ed1b03350/FLAGa459bc5a4 [2021-12-19 15:31:11,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e52964a2/4768cd55146c4824a2776e2ed1b03350 [2021-12-19 15:31:11,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-19 15:31:11,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-19 15:31:11,605 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-19 15:31:11,605 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-19 15:31:11,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-19 15:31:11,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:31:11" (1/1) ... [2021-12-19 15:31:11,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@623f50d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:31:11, skipping insertion in model container [2021-12-19 15:31:11,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 03:31:11" (1/1) ... [2021-12-19 15:31:11,615 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-19 15:31:11,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-19 15:31:11,776 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/benchmark47_linear.i[868,881] [2021-12-19 15:31:11,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:31:11,794 INFO L203 MainTranslator]: Completed pre-run [2021-12-19 15:31:11,810 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/benchmark47_linear.i[868,881] [2021-12-19 15:31:11,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-19 15:31:11,834 INFO L208 MainTranslator]: Completed translation [2021-12-19 15:31:11,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:31:11 WrapperNode [2021-12-19 15:31:11,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-19 15:31:11,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-19 15:31:11,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-19 15:31:11,838 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-19 15:31:11,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:31:11" (1/1) ... [2021-12-19 15:31:11,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:31:11" (1/1) ... [2021-12-19 15:31:11,869 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2021-12-19 15:31:11,869 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-19 15:31:11,870 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-19 15:31:11,870 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-19 15:31:11,870 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-19 15:31:11,877 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:31:11" (1/1) ... [2021-12-19 15:31:11,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:31:11" (1/1) ... [2021-12-19 15:31:11,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:31:11" (1/1) ... [2021-12-19 15:31:11,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:31:11" (1/1) ... [2021-12-19 15:31:11,892 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:31:11" (1/1) ... [2021-12-19 15:31:11,899 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:31:11" (1/1) ... [2021-12-19 15:31:11,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:31:11" (1/1) ... [2021-12-19 15:31:11,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-19 15:31:11,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-19 15:31:11,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-19 15:31:11,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-19 15:31:11,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:31:11" (1/1) ... [2021-12-19 15:31:11,912 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-19 15:31:11,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-19 15:31:11,931 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) [2021-12-19 15:31:11,938 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 [2021-12-19 15:31:11,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-19 15:31:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-19 15:31:11,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-19 15:31:11,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-19 15:31:12,008 INFO L236 CfgBuilder]: Building ICFG [2021-12-19 15:31:12,009 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-19 15:31:12,107 INFO L277 CfgBuilder]: Performing block encoding [2021-12-19 15:31:12,112 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-19 15:31:12,112 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-19 15:31:12,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:31:12 BoogieIcfgContainer [2021-12-19 15:31:12,114 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-19 15:31:12,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-19 15:31:12,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-19 15:31:12,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-19 15:31:12,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 03:31:11" (1/3) ... [2021-12-19 15:31:12,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3d7b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:31:12, skipping insertion in model container [2021-12-19 15:31:12,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 03:31:11" (2/3) ... [2021-12-19 15:31:12,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3d7b5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 03:31:12, skipping insertion in model container [2021-12-19 15:31:12,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:31:12" (3/3) ... [2021-12-19 15:31:12,121 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark47_linear.i [2021-12-19 15:31:12,125 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-19 15:31:12,126 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-12-19 15:31:12,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-19 15:31:12,170 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 [2021-12-19 15:31:12,171 INFO L340 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2021-12-19 15:31:12,184 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 33 states have internal predecessors, (40), 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) [2021-12-19 15:31:12,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-19 15:31:12,199 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:31:12,199 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-19 15:31:12,200 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-12-19 15:31:12,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:31:12,209 INFO L85 PathProgramCache]: Analyzing trace with hash 889575245, now seen corresponding path program 1 times [2021-12-19 15:31:12,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:31:12,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916117553] [2021-12-19 15:31:12,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:31:12,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:31:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-19 15:31:12,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-19 15:31:12,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-19 15:31:12,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916117553] [2021-12-19 15:31:12,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916117553] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-19 15:31:12,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-19 15:31:12,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-19 15:31:12,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074567019] [2021-12-19 15:31:12,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-19 15:31:12,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-19 15:31:12,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-19 15:31:12,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-19 15:31:12,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-19 15:31:12,360 INFO L87 Difference]: Start difference. First operand has 34 states, 23 states have (on average 1.7391304347826086) internal successors, (40), 33 states have internal predecessors, (40), 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 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) [2021-12-19 15:31:12,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-19 15:31:12,395 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2021-12-19 15:31:12,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-19 15:31:12,397 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 [2021-12-19 15:31:12,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-19 15:31:12,403 INFO L225 Difference]: With dead ends: 46 [2021-12-19 15:31:12,403 INFO L226 Difference]: Without dead ends: 27 [2021-12-19 15:31:12,405 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 [2021-12-19 15:31:12,408 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 2 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-19 15:31:12,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 55 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-19 15:31:12,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-19 15:31:12,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-12-19 15:31:12,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 26 states have internal predecessors, (29), 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) [2021-12-19 15:31:12,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-12-19 15:31:12,462 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 6 [2021-12-19 15:31:12,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-19 15:31:12,463 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-12-19 15:31:12,463 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) [2021-12-19 15:31:12,463 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-12-19 15:31:12,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-19 15:31:12,464 INFO L506 BasicCegarLoop]: Found error trace [2021-12-19 15:31:12,464 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-19 15:31:12,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-19 15:31:12,465 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2021-12-19 15:31:12,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-19 15:31:12,487 INFO L85 PathProgramCache]: Analyzing trace with hash 889575437, now seen corresponding path program 1 times [2021-12-19 15:31:12,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-19 15:31:12,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462959790] [2021-12-19 15:31:12,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-19 15:31:12,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-19 15:31:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 15:31:12,514 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-19 15:31:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-19 15:31:12,546 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-19 15:31:12,546 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-19 15:31:12,552 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2021-12-19 15:31:12,554 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2021-12-19 15:31:12,555 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2021-12-19 15:31:12,555 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2021-12-19 15:31:12,556 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2021-12-19 15:31:12,557 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2021-12-19 15:31:12,558 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2021-12-19 15:31:12,562 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2021-12-19 15:31:12,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2021-12-19 15:31:12,567 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2021-12-19 15:31:12,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-19 15:31:12,572 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-19 15:31:12,576 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-19 15:31:12,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.12 03:31:12 BoogieIcfgContainer [2021-12-19 15:31:12,598 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-19 15:31:12,601 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-19 15:31:12,602 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-19 15:31:12,602 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-19 15:31:12,603 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 03:31:12" (3/4) ... [2021-12-19 15:31:12,604 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-19 15:31:12,628 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-19 15:31:12,629 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-19 15:31:12,629 INFO L158 Benchmark]: Toolchain (without parser) took 1027.10ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 68.6MB in the beginning and 92.3MB in the end (delta: -23.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 15:31:12,630 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 96.5MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 15:31:12,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.57ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 68.4MB in the beginning and 96.6MB in the end (delta: -28.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-19 15:31:12,630 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.76ms. Allocated memory is still 119.5MB. Free memory was 96.6MB in the beginning and 95.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-19 15:31:12,631 INFO L158 Benchmark]: Boogie Preprocessor took 33.33ms. Allocated memory is still 119.5MB. Free memory was 95.3MB in the beginning and 94.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 15:31:12,631 INFO L158 Benchmark]: RCFGBuilder took 210.15ms. Allocated memory is still 119.5MB. Free memory was 94.2MB in the beginning and 84.5MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-19 15:31:12,632 INFO L158 Benchmark]: TraceAbstraction took 482.88ms. Allocated memory is still 119.5MB. Free memory was 84.1MB in the beginning and 93.5MB in the end (delta: -9.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 15:31:12,632 INFO L158 Benchmark]: Witness Printer took 27.39ms. Allocated memory is still 119.5MB. Free memory was 93.5MB in the beginning and 92.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-19 15:31:12,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 96.5MB. Free memory is still 53.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.57ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 68.4MB in the beginning and 96.6MB in the end (delta: -28.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.76ms. Allocated memory is still 119.5MB. Free memory was 96.6MB in the beginning and 95.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.33ms. Allocated memory is still 119.5MB. Free memory was 95.3MB in the beginning and 94.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 210.15ms. Allocated memory is still 119.5MB. Free memory was 94.2MB in the beginning and 84.5MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 482.88ms. Allocated memory is still 119.5MB. Free memory was 84.1MB in the beginning and 93.5MB in the end (delta: -9.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 27.39ms. Allocated memory is still 119.5MB. Free memory was 93.5MB in the beginning and 92.3MB in the end (delta: 1.2MB). There was no memory consumed. 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 - CounterExampleResult [Line: 25]: integer overflow possible integer overflow possible We found a FailurePath: [L20] int x = __VERIFIER_nondet_int(); [L21] int y = __VERIFIER_nondet_int(); [L22] COND FALSE !(!(x