./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursive-simple/id_b3_o5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5fbdf5bf 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/recursive-simple/id_b3_o5-2.c -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 849d3022dabab2c0a7f0738e4a7087eca0185d61 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 22:44:58,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 22:44:58,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 22:44:58,647 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 22:44:58,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 22:44:58,651 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 22:44:58,652 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 22:44:58,656 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 22:44:58,659 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 22:44:58,662 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 22:44:58,663 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 22:44:58,667 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 22:44:58,667 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 22:44:58,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 22:44:58,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 22:44:58,674 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 22:44:58,675 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 22:44:58,676 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 22:44:58,678 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 22:44:58,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 22:44:58,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 22:44:58,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 22:44:58,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 22:44:58,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 22:44:58,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 22:44:58,693 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 22:44:58,693 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 22:44:58,704 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 22:44:58,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 22:44:58,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 22:44:58,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 22:44:58,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 22:44:58,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 22:44:58,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 22:44:58,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 22:44:58,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 22:44:58,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 22:44:58,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 22:44:58,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 22:44:58,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 22:44:58,713 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 22:44:58,716 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-08-30 22:44:58,749 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 22:44:58,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 22:44:58,753 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 22:44:58,753 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 22:44:58,755 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 22:44:58,755 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 22:44:58,755 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 22:44:58,755 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 22:44:58,756 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 22:44:58,756 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 22:44:58,756 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 22:44:58,757 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 22:44:58,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 22:44:58,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-30 22:44:58,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 22:44:58,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-30 22:44:58,757 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-30 22:44:58,757 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 22:44:58,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-30 22:44:58,758 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 22:44:58,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-30 22:44:58,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 22:44:58,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 22:44:58,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 22:44:58,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:44:58,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 22:44:58,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 22:44:58,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-30 22:44:58,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 22:44:58,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 22:44:58,759 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-30 22:44:58,759 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 22:44:58,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 849d3022dabab2c0a7f0738e4a7087eca0185d61 [2021-08-30 22:44:59,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 22:44:59,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 22:44:59,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 22:44:59,109 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 22:44:59,110 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 22:44:59,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive-simple/id_b3_o5-2.c [2021-08-30 22:44:59,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24b376db9/25759b6d981940229b17a75578788a7a/FLAG222ddca81 [2021-08-30 22:44:59,549 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 22:44:59,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b3_o5-2.c [2021-08-30 22:44:59,554 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24b376db9/25759b6d981940229b17a75578788a7a/FLAG222ddca81 [2021-08-30 22:44:59,970 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24b376db9/25759b6d981940229b17a75578788a7a [2021-08-30 22:44:59,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 22:44:59,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-30 22:44:59,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 22:44:59,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 22:44:59,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 22:44:59,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:44:59" (1/1) ... [2021-08-30 22:44:59,980 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@302dba22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:44:59, skipping insertion in model container [2021-08-30 22:44:59,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 10:44:59" (1/1) ... [2021-08-30 22:44:59,988 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 22:44:59,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 22:45:00,094 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b3_o5-2.c[528,541] [2021-08-30 22:45:00,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:45:00,102 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 22:45:00,118 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive-simple/id_b3_o5-2.c[528,541] [2021-08-30 22:45:00,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 22:45:00,129 INFO L208 MainTranslator]: Completed translation [2021-08-30 22:45:00,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:45:00 WrapperNode [2021-08-30 22:45:00,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 22:45:00,131 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-30 22:45:00,131 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-30 22:45:00,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-30 22:45:00,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:45:00" (1/1) ... [2021-08-30 22:45:00,146 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:45:00" (1/1) ... [2021-08-30 22:45:00,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-30 22:45:00,165 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 22:45:00,165 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 22:45:00,165 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 22:45:00,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:45:00" (1/1) ... [2021-08-30 22:45:00,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:45:00" (1/1) ... [2021-08-30 22:45:00,178 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:45:00" (1/1) ... [2021-08-30 22:45:00,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:45:00" (1/1) ... [2021-08-30 22:45:00,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:45:00" (1/1) ... [2021-08-30 22:45:00,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:45:00" (1/1) ... [2021-08-30 22:45:00,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:45:00" (1/1) ... [2021-08-30 22:45:00,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 22:45:00,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 22:45:00,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 22:45:00,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 22:45:00,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:45:00" (1/1) ... [2021-08-30 22:45:00,204 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 22:45:00,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:45:00,230 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) [2021-08-30 22:45:00,249 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 [2021-08-30 22:45:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 22:45:00,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 22:45:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 22:45:00,265 INFO L130 BoogieDeclarations]: Found specification of procedure id [2021-08-30 22:45:00,266 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2021-08-30 22:45:00,266 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 22:45:00,429 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 22:45:00,429 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-08-30 22:45:00,430 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:45:00 BoogieIcfgContainer [2021-08-30 22:45:00,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 22:45:00,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 22:45:00,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 22:45:00,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 22:45:00,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 10:44:59" (1/3) ... [2021-08-30 22:45:00,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4bc4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:45:00, skipping insertion in model container [2021-08-30 22:45:00,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 10:45:00" (2/3) ... [2021-08-30 22:45:00,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e4bc4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 10:45:00, skipping insertion in model container [2021-08-30 22:45:00,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:45:00" (3/3) ... [2021-08-30 22:45:00,439 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b3_o5-2.c [2021-08-30 22:45:00,444 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 22:45:00,444 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-08-30 22:45:00,491 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 22:45:00,500 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, mConcurrency=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 [2021-08-30 22:45:00,500 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-08-30 22:45:00,524 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-08-30 22:45:00,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-30 22:45:00,529 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:45:00,530 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:45:00,531 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-30 22:45:00,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:45:00,538 INFO L82 PathProgramCache]: Analyzing trace with hash -686834844, now seen corresponding path program 1 times [2021-08-30 22:45:00,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:45:00,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269566058] [2021-08-30 22:45:00,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:45:00,549 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:45:00,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:45:00,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 22:45:00,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:45:00,726 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-30 22:45:00,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:45:00,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269566058] [2021-08-30 22:45:00,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269566058] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:45:00,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:45:00,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 22:45:00,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527535131] [2021-08-30 22:45:00,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 22:45:00,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:45:00,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 22:45:00,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 22:45:00,763 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 22:45:00,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:45:00,865 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2021-08-30 22:45:00,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 22:45:00,867 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-08-30 22:45:00,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:45:00,873 INFO L225 Difference]: With dead ends: 30 [2021-08-30 22:45:00,873 INFO L226 Difference]: Without dead ends: 19 [2021-08-30 22:45:00,875 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.01ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-30 22:45:00,886 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 1 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.24ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 84.54ms IncrementalHoareTripleChecker+Time [2021-08-30 22:45:00,887 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 54 Unknown, 0 Unchecked, 1.24ms Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 84.54ms Time] [2021-08-30 22:45:00,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-08-30 22:45:00,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-08-30 22:45:00,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 22:45:00,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-08-30 22:45:00,916 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2021-08-30 22:45:00,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:45:00,917 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-08-30 22:45:00,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 22:45:00,917 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-08-30 22:45:00,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 22:45:00,918 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:45:00,918 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:45:00,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 22:45:00,919 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-30 22:45:00,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:45:00,919 INFO L82 PathProgramCache]: Analyzing trace with hash -562529486, now seen corresponding path program 1 times [2021-08-30 22:45:00,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:45:00,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227937558] [2021-08-30 22:45:00,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:45:00,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:45:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:45:00,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 22:45:01,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:45:01,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 22:45:01,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:45:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-30 22:45:01,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:45:01,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227937558] [2021-08-30 22:45:01,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227937558] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:45:01,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:45:01,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-30 22:45:01,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038494575] [2021-08-30 22:45:01,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 22:45:01,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:45:01,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 22:45:01,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 22:45:01,070 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 22:45:01,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:45:01,109 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2021-08-30 22:45:01,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 22:45:01,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2021-08-30 22:45:01,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:45:01,112 INFO L225 Difference]: With dead ends: 30 [2021-08-30 22:45:01,112 INFO L226 Difference]: Without dead ends: 22 [2021-08-30 22:45:01,112 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.05ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 22:45:01,114 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.94ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.18ms IncrementalHoareTripleChecker+Time [2021-08-30 22:45:01,114 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 15 Invalid, 53 Unknown, 0 Unchecked, 0.94ms Time], IncrementalHoareTripleChecker [1 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 34.18ms Time] [2021-08-30 22:45:01,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-08-30 22:45:01,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2021-08-30 22:45:01,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 22:45:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-08-30 22:45:01,119 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 24 [2021-08-30 22:45:01,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:45:01,119 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-08-30 22:45:01,120 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 22:45:01,120 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-08-30 22:45:01,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 22:45:01,120 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:45:01,121 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:45:01,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 22:45:01,121 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-30 22:45:01,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:45:01,122 INFO L82 PathProgramCache]: Analyzing trace with hash -561605965, now seen corresponding path program 1 times [2021-08-30 22:45:01,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:45:01,122 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197243295] [2021-08-30 22:45:01,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:45:01,122 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:45:01,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:45:01,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 22:45:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:45:01,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 22:45:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:45:01,284 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-30 22:45:01,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:45:01,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197243295] [2021-08-30 22:45:01,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197243295] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 22:45:01,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802001024] [2021-08-30 22:45:01,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:45:01,285 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:45:01,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 22:45:01,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 22:45:01,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-30 22:45:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:45:01,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 22:45:01,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 22:45:01,493 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-30 22:45:01,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 22:45:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-08-30 22:45:01,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802001024] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 22:45:01,642 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 22:45:01,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-08-30 22:45:01,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905119899] [2021-08-30 22:45:01,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-30 22:45:01,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:45:01,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-30 22:45:01,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-08-30 22:45:01,644 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 22:45:01,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:45:01,737 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-08-30 22:45:01,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 22:45:01,738 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2021-08-30 22:45:01,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:45:01,739 INFO L225 Difference]: With dead ends: 25 [2021-08-30 22:45:01,739 INFO L226 Difference]: Without dead ends: 24 [2021-08-30 22:45:01,740 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 59.71ms TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-08-30 22:45:01,741 INFO L928 BasicCegarLoop]: 4 mSDtfsCounter, 15 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.82ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.36ms IncrementalHoareTripleChecker+Time [2021-08-30 22:45:01,741 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 20 Invalid, 80 Unknown, 0 Unchecked, 1.82ms Time], IncrementalHoareTripleChecker [7 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 65.36ms Time] [2021-08-30 22:45:01,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-08-30 22:45:01,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2021-08-30 22:45:01,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-30 22:45:01,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-08-30 22:45:01,746 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 24 [2021-08-30 22:45:01,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:45:01,746 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-08-30 22:45:01,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.0) internal successors, (22), 12 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2021-08-30 22:45:01,747 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-08-30 22:45:01,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-30 22:45:01,747 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 22:45:01,748 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 22:45:01,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-30 22:45:01,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 22:45:01,973 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2021-08-30 22:45:01,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 22:45:01,974 INFO L82 PathProgramCache]: Analyzing trace with hash -229915676, now seen corresponding path program 1 times [2021-08-30 22:45:01,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 22:45:01,974 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167269537] [2021-08-30 22:45:01,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 22:45:01,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 22:45:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:45:02,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-08-30 22:45:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:45:02,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-08-30 22:45:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 22:45:02,030 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-08-30 22:45:02,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 22:45:02,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167269537] [2021-08-30 22:45:02,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167269537] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 22:45:02,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 22:45:02,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 22:45:02,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255040119] [2021-08-30 22:45:02,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 22:45:02,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 22:45:02,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 22:45:02,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:45:02,035 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 22:45:02,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 22:45:02,053 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-08-30 22:45:02,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 22:45:02,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-08-30 22:45:02,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 22:45:02,054 INFO L225 Difference]: With dead ends: 19 [2021-08-30 22:45:02,054 INFO L226 Difference]: Without dead ends: 0 [2021-08-30 22:45:02,055 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.98ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 22:45:02,056 INFO L928 BasicCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.23ms IncrementalHoareTripleChecker+Time [2021-08-30 22:45:02,059 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 20 Unknown, 0 Unchecked, 0.31ms Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 15.23ms Time] [2021-08-30 22:45:02,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-30 22:45:02,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-30 22:45:02,062 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) [2021-08-30 22:45:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-30 22:45:02,063 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-08-30 22:45:02,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 22:45:02,063 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-30 22:45:02,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-08-30 22:45:02,064 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-30 22:45:02,065 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-30 22:45:02,067 INFO L764 garLoopResultBuilder]: Registering result SAFE for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 2 remaining) [2021-08-30 22:45:02,068 INFO L764 garLoopResultBuilder]: Registering result SAFE for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 2 remaining) [2021-08-30 22:45:02,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-30 22:45:02,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-30 22:45:02,073 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:45:02,075 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:45:02,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:45:02,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:45:02,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 22:45:02,083 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-30 22:45:02,083 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-30 22:45:02,083 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-30 22:45:02,084 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-30 22:45:02,084 INFO L858 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2021-08-30 22:45:02,084 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2021-08-30 22:45:02,084 INFO L861 garLoopResultBuilder]: At program point L15(line 15) the Hoare annotation is: true [2021-08-30 22:45:02,085 INFO L858 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-08-30 22:45:02,085 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 19) no Hoare annotation was computed. [2021-08-30 22:45:02,085 INFO L858 garLoopResultBuilder]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2021-08-30 22:45:02,085 INFO L858 garLoopResultBuilder]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2021-08-30 22:45:02,086 INFO L861 garLoopResultBuilder]: At program point idENTRY(lines 6 11) the Hoare annotation is: true [2021-08-30 22:45:02,086 INFO L858 garLoopResultBuilder]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2021-08-30 22:45:02,088 INFO L858 garLoopResultBuilder]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2021-08-30 22:45:02,089 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-08-30 22:45:02,089 INFO L861 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: true [2021-08-30 22:45:02,089 INFO L858 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-08-30 22:45:02,089 INFO L858 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2021-08-30 22:45:02,090 INFO L858 garLoopResultBuilder]: For program point L8-2(line 8) no Hoare annotation was computed. [2021-08-30 22:45:02,090 INFO L858 garLoopResultBuilder]: For program point L8-3(line 8) no Hoare annotation was computed. [2021-08-30 22:45:02,095 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 22:45:02,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 10:45:02 BoogieIcfgContainer [2021-08-30 22:45:02,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 22:45:02,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 22:45:02,100 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 22:45:02,100 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 22:45:02,100 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 10:45:00" (3/4) ... [2021-08-30 22:45:02,102 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-30 22:45:02,108 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2021-08-30 22:45:02,111 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-08-30 22:45:02,111 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-30 22:45:02,111 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 22:45:02,111 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 22:45:02,143 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 22:45:02,143 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 22:45:02,144 INFO L158 Benchmark]: Toolchain (without parser) took 2170.55ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 37.5MB in the beginning and 39.1MB in the end (delta: -1.6MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2021-08-30 22:45:02,144 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 58.7MB. Free memory was 39.5MB in the beginning and 39.4MB in the end (delta: 81.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 22:45:02,144 INFO L158 Benchmark]: CACSL2BoogieTranslator took 154.34ms. Allocated memory is still 58.7MB. Free memory was 37.2MB in the beginning and 41.8MB in the end (delta: -4.6MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. [2021-08-30 22:45:02,145 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.53ms. Allocated memory is still 58.7MB. Free memory was 41.8MB in the beginning and 42.1MB in the end (delta: -290.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 22:45:02,145 INFO L158 Benchmark]: Boogie Preprocessor took 31.93ms. Allocated memory is still 58.7MB. Free memory was 42.1MB in the beginning and 41.3MB in the end (delta: 852.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 22:45:02,146 INFO L158 Benchmark]: RCFGBuilder took 233.44ms. Allocated memory is still 58.7MB. Free memory was 41.1MB in the beginning and 32.7MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-30 22:45:02,146 INFO L158 Benchmark]: TraceAbstraction took 1665.72ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 32.1MB in the beginning and 41.7MB in the end (delta: -9.6MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. [2021-08-30 22:45:02,146 INFO L158 Benchmark]: Witness Printer took 43.72ms. Allocated memory is still 71.3MB. Free memory was 41.3MB in the beginning and 39.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 22:45:02,148 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 58.7MB. Free memory was 39.5MB in the beginning and 39.4MB in the end (delta: 81.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 154.34ms. Allocated memory is still 58.7MB. Free memory was 37.2MB in the beginning and 41.8MB in the end (delta: -4.6MB). Peak memory consumption was 9.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.53ms. Allocated memory is still 58.7MB. Free memory was 41.8MB in the beginning and 42.1MB in the end (delta: -290.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.93ms. Allocated memory is still 58.7MB. Free memory was 42.1MB in the beginning and 41.3MB in the end (delta: 852.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 233.44ms. Allocated memory is still 58.7MB. Free memory was 41.1MB in the beginning and 32.7MB in the end (delta: 8.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 1665.72ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 32.1MB in the beginning and 41.7MB in the end (delta: -9.6MB). Peak memory consumption was 4.6MB. Max. memory is 16.1GB. * Witness Printer took 43.72ms. Allocated memory is still 71.3MB. Free memory was 41.3MB in the beginning and 39.1MB 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, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: 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 2 procedures, 20 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1605.83ms, OverallIterations: 4, TraceHistogramMax: 4, EmptinessCheckTime: 12.08ms, AutomataDifference: 328.50ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 12.93ms, InitialAbstractionConstructionTime: 19.30ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 199.31ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 53 SdHoareTripleChecker+Invalid, 155.65ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 125 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 198 IncrementalHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 15 mSDtfsCounter, 198 mSolverCounterSat, 4.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 82.76ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 22, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 27.32ms AutomataMinimizationTime, 4 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 6.28ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 1.45ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 27.54ms SsaConstructionTime, 115.47ms SatisfiabilityAnalysisTime, 656.85ms InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 226 SizeOfPredicates, 1 NumberOfNonLiveVariables, 84 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 91/103 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 RESULT: Ultimate proved your program to be correct! [2021-08-30 22:45:02,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...