./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 26d01a9c 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/termination-crafted/MutualRecursion_1a.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 07:57:43,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 07:57:43,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 07:57:43,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 07:57:43,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 07:57:43,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 07:57:43,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 07:57:43,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 07:57:43,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 07:57:43,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 07:57:43,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 07:57:43,755 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 07:57:43,755 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 07:57:43,757 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 07:57:43,759 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 07:57:43,760 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 07:57:43,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 07:57:43,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 07:57:43,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 07:57:43,769 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 07:57:43,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 07:57:43,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 07:57:43,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 07:57:43,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 07:57:43,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 07:57:43,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 07:57:43,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 07:57:43,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 07:57:43,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 07:57:43,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 07:57:43,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 07:57:43,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 07:57:43,783 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 07:57:43,784 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 07:57:43,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 07:57:43,785 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 07:57:43,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 07:57:43,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 07:57:43,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 07:57:43,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 07:57:43,788 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 07:57:43,789 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-18 07:57:43,821 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 07:57:43,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 07:57:43,823 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 07:57:43,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 07:57:43,823 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 07:57:43,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 07:57:43,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 07:57:43,824 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 07:57:43,825 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 07:57:43,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 07:57:43,825 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 07:57:43,826 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 07:57:43,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 07:57:43,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 07:57:43,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 07:57:43,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 07:57:43,826 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-18 07:57:43,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 07:57:43,827 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 07:57:43,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 07:57:43,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 07:57:43,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 07:57:43,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 07:57:43,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:57:43,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 07:57:43,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 07:57:43,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 07:57:43,828 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 07:57:43,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 07:57:43,829 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 07:57:43,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 07:57:43,829 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 07:57:43,829 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 07:57:43,829 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 07:57:43,830 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 727b654585befeb7272249307a5de272b17c4e2d2d1afa67fd11f4eb185d7508 [2023-02-18 07:57:43,991 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 07:57:44,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 07:57:44,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 07:57:44,011 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 07:57:44,012 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 07:57:44,013 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2023-02-18 07:57:44,953 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 07:57:45,172 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 07:57:45,173 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/MutualRecursion_1a.c [2023-02-18 07:57:45,177 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91370275a/8b7e94eadbf54b7b99d5aecd64a2e296/FLAGb06af84db [2023-02-18 07:57:45,193 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/91370275a/8b7e94eadbf54b7b99d5aecd64a2e296 [2023-02-18 07:57:45,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 07:57:45,196 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 07:57:45,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 07:57:45,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 07:57:45,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 07:57:45,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:57:45" (1/1) ... [2023-02-18 07:57:45,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47285cea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:45, skipping insertion in model container [2023-02-18 07:57:45,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:57:45" (1/1) ... [2023-02-18 07:57:45,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 07:57:45,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 07:57:45,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:57:45,316 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 07:57:45,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:57:45,332 INFO L208 MainTranslator]: Completed translation [2023-02-18 07:57:45,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:45 WrapperNode [2023-02-18 07:57:45,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 07:57:45,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 07:57:45,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 07:57:45,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 07:57:45,338 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:45" (1/1) ... [2023-02-18 07:57:45,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:45" (1/1) ... [2023-02-18 07:57:45,349 INFO L138 Inliner]: procedures = 6, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8 [2023-02-18 07:57:45,349 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 07:57:45,349 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 07:57:45,349 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 07:57:45,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 07:57:45,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:45" (1/1) ... [2023-02-18 07:57:45,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:45" (1/1) ... [2023-02-18 07:57:45,355 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:45" (1/1) ... [2023-02-18 07:57:45,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:45" (1/1) ... [2023-02-18 07:57:45,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:45" (1/1) ... [2023-02-18 07:57:45,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:45" (1/1) ... [2023-02-18 07:57:45,357 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:45" (1/1) ... [2023-02-18 07:57:45,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:45" (1/1) ... [2023-02-18 07:57:45,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 07:57:45,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 07:57:45,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 07:57:45,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 07:57:45,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:45" (1/1) ... [2023-02-18 07:57:45,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:57:45,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:57:45,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 07:57:45,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 07:57:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-02-18 07:57:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-02-18 07:57:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure g [2023-02-18 07:57:45,406 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2023-02-18 07:57:45,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 07:57:45,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 07:57:45,455 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 07:57:45,456 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 07:57:45,563 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 07:57:45,579 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 07:57:45,580 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-18 07:57:45,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:57:45 BoogieIcfgContainer [2023-02-18 07:57:45,585 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 07:57:45,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 07:57:45,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 07:57:45,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 07:57:45,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 07:57:45" (1/3) ... [2023-02-18 07:57:45,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3192efc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:57:45, skipping insertion in model container [2023-02-18 07:57:45,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:45" (2/3) ... [2023-02-18 07:57:45,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3192efc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:57:45, skipping insertion in model container [2023-02-18 07:57:45,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:57:45" (3/3) ... [2023-02-18 07:57:45,607 INFO L112 eAbstractionObserver]: Analyzing ICFG MutualRecursion_1a.c [2023-02-18 07:57:45,619 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 07:57:45,633 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-02-18 07:57:45,692 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 07:57:45,697 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2293d56f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 07:57:45,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-02-18 07:57:45,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 25 states have (on average 1.48) internal successors, (37), 35 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-18 07:57:45,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 07:57:45,707 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:57:45,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 07:57:45,708 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-02-18 07:57:45,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:57:45,712 INFO L85 PathProgramCache]: Analyzing trace with hash 2073143902, now seen corresponding path program 1 times [2023-02-18 07:57:45,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:57:45,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745811384] [2023-02-18 07:57:45,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:45,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:57:45,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:45,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:57:45,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:57:45,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745811384] [2023-02-18 07:57:45,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745811384] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:57:45,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:57:45,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:57:45,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922347626] [2023-02-18 07:57:45,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:57:45,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:57:45,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:57:45,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:57:45,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:57:45,861 INFO L87 Difference]: Start difference. First operand has 43 states, 25 states have (on average 1.48) internal successors, (37), 35 states have internal predecessors, (37), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:57:45,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:57:45,902 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2023-02-18 07:57:45,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:57:45,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-18 07:57:45,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:57:45,909 INFO L225 Difference]: With dead ends: 45 [2023-02-18 07:57:45,909 INFO L226 Difference]: Without dead ends: 39 [2023-02-18 07:57:45,911 INFO L412 NwaCegarLoop]: 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 [2023-02-18 07:57:45,914 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 13 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:57:45,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 72 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:57:45,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-18 07:57:45,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2023-02-18 07:57:45,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 30 states have internal predecessors, (32), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-18 07:57:45,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2023-02-18 07:57:45,942 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 6 [2023-02-18 07:57:45,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:57:45,945 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2023-02-18 07:57:45,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:57:45,946 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2023-02-18 07:57:45,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 07:57:45,946 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:57:45,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:57:45,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 07:57:45,948 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-02-18 07:57:45,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:57:45,950 INFO L85 PathProgramCache]: Analyzing trace with hash -157048422, now seen corresponding path program 1 times [2023-02-18 07:57:45,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:57:45,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131453329] [2023-02-18 07:57:45,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:45,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:57:45,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:45,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:57:45,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:57:45,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131453329] [2023-02-18 07:57:45,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131453329] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:57:45,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:57:45,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:57:45,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361936277] [2023-02-18 07:57:45,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:57:45,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:57:45,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:57:45,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:57:45,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:57:45,989 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:57:46,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:57:46,033 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2023-02-18 07:57:46,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:57:46,034 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-18 07:57:46,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:57:46,035 INFO L225 Difference]: With dead ends: 57 [2023-02-18 07:57:46,035 INFO L226 Difference]: Without dead ends: 53 [2023-02-18 07:57:46,035 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 07:57:46,036 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 26 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:57:46,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 132 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:57:46,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-18 07:57:46,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2023-02-18 07:57:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.34375) internal successors, (43), 39 states have internal predecessors, (43), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 07:57:46,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2023-02-18 07:57:46,044 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 7 [2023-02-18 07:57:46,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:57:46,044 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2023-02-18 07:57:46,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:57:46,045 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2023-02-18 07:57:46,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 07:57:46,045 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:57:46,045 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:57:46,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 07:57:46,046 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-02-18 07:57:46,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:57:46,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1776336168, now seen corresponding path program 1 times [2023-02-18 07:57:46,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:57:46,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15691703] [2023-02-18 07:57:46,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:46,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:57:46,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:46,136 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:57:46,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:57:46,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15691703] [2023-02-18 07:57:46,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15691703] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:57:46,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:57:46,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-18 07:57:46,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287367300] [2023-02-18 07:57:46,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:57:46,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 07:57:46,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:57:46,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 07:57:46,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-18 07:57:46,143 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:57:46,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:57:46,285 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2023-02-18 07:57:46,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 07:57:46,285 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-18 07:57:46,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:57:46,286 INFO L225 Difference]: With dead ends: 67 [2023-02-18 07:57:46,287 INFO L226 Difference]: Without dead ends: 64 [2023-02-18 07:57:46,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-02-18 07:57:46,289 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 82 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:57:46,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 108 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:57:46,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-18 07:57:46,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2023-02-18 07:57:46,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 43 states have (on average 1.255813953488372) internal successors, (54), 47 states have internal predecessors, (54), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-18 07:57:46,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2023-02-18 07:57:46,296 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 15 [2023-02-18 07:57:46,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:57:46,296 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2023-02-18 07:57:46,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:57:46,296 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2023-02-18 07:57:46,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 07:57:46,297 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:57:46,297 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:57:46,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 07:57:46,297 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-02-18 07:57:46,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:57:46,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1957494335, now seen corresponding path program 1 times [2023-02-18 07:57:46,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:57:46,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765320042] [2023-02-18 07:57:46,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:46,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:57:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:46,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-18 07:57:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:46,325 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:57:46,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:57:46,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765320042] [2023-02-18 07:57:46,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765320042] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:57:46,326 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:57:46,326 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:57:46,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000174791] [2023-02-18 07:57:46,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:57:46,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:57:46,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:57:46,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:57:46,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:57:46,328 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:57:46,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:57:46,336 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2023-02-18 07:57:46,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:57:46,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-18 07:57:46,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:57:46,337 INFO L225 Difference]: With dead ends: 62 [2023-02-18 07:57:46,337 INFO L226 Difference]: Without dead ends: 61 [2023-02-18 07:57:46,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:57:46,339 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:57:46,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 62 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:57:46,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-02-18 07:57:46,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2023-02-18 07:57:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 46 states have internal predecessors, (53), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-18 07:57:46,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2023-02-18 07:57:46,346 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 17 [2023-02-18 07:57:46,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:57:46,346 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2023-02-18 07:57:46,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 07:57:46,346 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2023-02-18 07:57:46,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-18 07:57:46,347 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:57:46,347 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:57:46,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 07:57:46,347 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-02-18 07:57:46,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:57:46,348 INFO L85 PathProgramCache]: Analyzing trace with hash 2114816930, now seen corresponding path program 1 times [2023-02-18 07:57:46,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:57:46,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260899016] [2023-02-18 07:57:46,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:46,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:57:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:46,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 07:57:46,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:46,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-02-18 07:57:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 07:57:46,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:57:46,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260899016] [2023-02-18 07:57:46,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260899016] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:57:46,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:57:46,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:57:46,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750948339] [2023-02-18 07:57:46,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:57:46,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:57:46,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:57:46,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:57:46,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:57:46,412 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:57:46,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:57:46,437 INFO L93 Difference]: Finished difference Result 94 states and 123 transitions. [2023-02-18 07:57:46,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:57:46,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-02-18 07:57:46,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:57:46,439 INFO L225 Difference]: With dead ends: 94 [2023-02-18 07:57:46,439 INFO L226 Difference]: Without dead ends: 93 [2023-02-18 07:57:46,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 07:57:46,440 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:57:46,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 128 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:57:46,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-02-18 07:57:46,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 79. [2023-02-18 07:57:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 60 states have internal predecessors, (69), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (20), 14 states have call predecessors, (20), 11 states have call successors, (20) [2023-02-18 07:57:46,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 101 transitions. [2023-02-18 07:57:46,449 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 101 transitions. Word has length 22 [2023-02-18 07:57:46,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:57:46,449 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 101 transitions. [2023-02-18 07:57:46,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:57:46,450 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 101 transitions. [2023-02-18 07:57:46,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-18 07:57:46,450 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:57:46,451 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:57:46,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 07:57:46,451 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-02-18 07:57:46,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:57:46,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1134815458, now seen corresponding path program 1 times [2023-02-18 07:57:46,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:57:46,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768049726] [2023-02-18 07:57:46,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:46,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:57:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:46,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 07:57:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:46,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-02-18 07:57:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:46,498 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 07:57:46,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:57:46,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768049726] [2023-02-18 07:57:46,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768049726] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:57:46,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:57:46,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:57:46,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424455282] [2023-02-18 07:57:46,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:57:46,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:57:46,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:57:46,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:57:46,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:57:46,501 INFO L87 Difference]: Start difference. First operand 79 states and 101 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:57:46,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:57:46,526 INFO L93 Difference]: Finished difference Result 94 states and 120 transitions. [2023-02-18 07:57:46,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:57:46,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2023-02-18 07:57:46,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:57:46,527 INFO L225 Difference]: With dead ends: 94 [2023-02-18 07:57:46,529 INFO L226 Difference]: Without dead ends: 90 [2023-02-18 07:57:46,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 07:57:46,530 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:57:46,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 128 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:57:46,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-02-18 07:57:46,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 79. [2023-02-18 07:57:46,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 59 states have (on average 1.1694915254237288) internal successors, (69), 61 states have internal predecessors, (69), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (19), 13 states have call predecessors, (19), 11 states have call successors, (19) [2023-02-18 07:57:46,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2023-02-18 07:57:46,545 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 23 [2023-02-18 07:57:46,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:57:46,545 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2023-02-18 07:57:46,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:57:46,546 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2023-02-18 07:57:46,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 07:57:46,546 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:57:46,547 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:57:46,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-18 07:57:46,547 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-02-18 07:57:46,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:57:46,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2043421976, now seen corresponding path program 1 times [2023-02-18 07:57:46,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:57:46,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151116439] [2023-02-18 07:57:46,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:46,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:57:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:46,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 07:57:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:46,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-18 07:57:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:46,597 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-18 07:57:46,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:57:46,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151116439] [2023-02-18 07:57:46,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151116439] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:57:46,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129558331] [2023-02-18 07:57:46,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:46,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:57:46,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:57:46,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 07:57:46,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 07:57:46,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:46,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 07:57:46,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:57:46,685 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-18 07:57:46,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:57:46,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129558331] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:57:46,686 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 07:57:46,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-02-18 07:57:46,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280972405] [2023-02-18 07:57:46,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:57:46,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:57:46,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:57:46,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:57:46,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-18 07:57:46,687 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:57:46,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:57:46,723 INFO L93 Difference]: Finished difference Result 150 states and 200 transitions. [2023-02-18 07:57:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 07:57:46,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2023-02-18 07:57:46,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:57:46,724 INFO L225 Difference]: With dead ends: 150 [2023-02-18 07:57:46,724 INFO L226 Difference]: Without dead ends: 79 [2023-02-18 07:57:46,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-02-18 07:57:46,726 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 23 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:57:46,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 79 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:57:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-02-18 07:57:46,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-02-18 07:57:46,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 59 states have (on average 1.1355932203389831) internal successors, (67), 61 states have internal predecessors, (67), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (19), 13 states have call predecessors, (19), 11 states have call successors, (19) [2023-02-18 07:57:46,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2023-02-18 07:57:46,732 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 33 [2023-02-18 07:57:46,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:57:46,732 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2023-02-18 07:57:46,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 07:57:46,732 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2023-02-18 07:57:46,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-18 07:57:46,734 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:57:46,734 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:57:46,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 07:57:46,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:57:46,939 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-02-18 07:57:46,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:57:46,939 INFO L85 PathProgramCache]: Analyzing trace with hash 799874222, now seen corresponding path program 1 times [2023-02-18 07:57:46,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:57:46,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202025050] [2023-02-18 07:57:46,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:46,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:57:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:46,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 07:57:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:47,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:57:47,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:47,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:57:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:47,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-02-18 07:57:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:47,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:57:47,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:47,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:57:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-02-18 07:57:47,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:57:47,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202025050] [2023-02-18 07:57:47,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202025050] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:57:47,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983952387] [2023-02-18 07:57:47,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:57:47,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:57:47,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:57:47,113 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 07:57:47,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 07:57:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:57:47,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 07:57:47,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:57:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-02-18 07:57:47,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:57:47,294 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 30 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-02-18 07:57:47,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983952387] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:57:47,294 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:57:47,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 12 [2023-02-18 07:57:47,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417578853] [2023-02-18 07:57:47,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:57:47,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 07:57:47,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:57:47,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 07:57:47,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-18 07:57:47,298 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 7 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2023-02-18 07:57:47,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:57:47,356 INFO L93 Difference]: Finished difference Result 118 states and 148 transitions. [2023-02-18 07:57:47,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 07:57:47,356 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 7 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2023-02-18 07:57:47,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:57:47,358 INFO L225 Difference]: With dead ends: 118 [2023-02-18 07:57:47,358 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 07:57:47,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 138 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-02-18 07:57:47,362 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 21 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 07:57:47,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 37 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 07:57:47,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 07:57:47,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 07:57:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:57:47,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 07:57:47,364 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2023-02-18 07:57:47,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:57:47,365 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 07:57:47,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 states have internal predecessors, (52), 7 states have call successors, (11), 1 states have call predecessors, (11), 3 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2023-02-18 07:57:47,365 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 07:57:47,365 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 07:57:47,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2023-02-18 07:57:47,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-02-18 07:57:47,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-02-18 07:57:47,367 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-02-18 07:57:47,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-02-18 07:57:47,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-02-18 07:57:47,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-02-18 07:57:47,368 INFO L805 garLoopResultBuilder]: Registering result SAFE for location gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-02-18 07:57:47,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-02-18 07:57:47,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-02-18 07:57:47,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-18 07:57:47,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-18 07:57:47,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 07:57:47,583 INFO L899 garLoopResultBuilder]: For program point fFINAL(lines 11 15) no Hoare annotation was computed. [2023-02-18 07:57:47,584 INFO L895 garLoopResultBuilder]: At program point L14(line 14) the Hoare annotation is: (let ((.cse1 (<= |f_#in~x| 2147483646))) (let ((.cse0 (not .cse1))) (and (or .cse0 (not (<= 0 (* (- 1) |f_#in~x|)))) (or .cse0 (and (= |f_#in~x| f_~x) (<= f_~x 2147483646) (<= 0 (+ (- 1) f_~x)) .cse1))))) [2023-02-18 07:57:47,584 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-02-18 07:57:47,585 INFO L899 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2023-02-18 07:57:47,585 INFO L899 garLoopResultBuilder]: For program point L14-2(line 14) no Hoare annotation was computed. [2023-02-18 07:57:47,585 INFO L899 garLoopResultBuilder]: For program point L14-3(line 14) no Hoare annotation was computed. [2023-02-18 07:57:47,586 INFO L895 garLoopResultBuilder]: At program point L14-4(line 14) the Hoare annotation is: (let ((.cse1 (<= |f_#in~x| 2147483646))) (let ((.cse0 (not .cse1))) (and (or .cse0 (not (<= 0 (* (- 1) |f_#in~x|)))) (or .cse0 (and (= |f_#in~x| f_~x) (<= f_~x 2147483646) (<= 0 (+ (- 1) f_~x)) .cse1))))) [2023-02-18 07:57:47,586 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 15) the Hoare annotation is: true [2023-02-18 07:57:47,586 INFO L899 garLoopResultBuilder]: For program point L14-5(line 14) no Hoare annotation was computed. [2023-02-18 07:57:47,586 INFO L899 garLoopResultBuilder]: For program point fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-18 07:57:47,586 INFO L899 garLoopResultBuilder]: For program point fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-18 07:57:47,587 INFO L899 garLoopResultBuilder]: For program point L14-6(line 14) no Hoare annotation was computed. [2023-02-18 07:57:47,587 INFO L899 garLoopResultBuilder]: For program point fEXIT(lines 11 15) no Hoare annotation was computed. [2023-02-18 07:57:47,587 INFO L899 garLoopResultBuilder]: For program point L14-7(line 14) no Hoare annotation was computed. [2023-02-18 07:57:47,587 INFO L899 garLoopResultBuilder]: For program point fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-18 07:57:47,587 INFO L899 garLoopResultBuilder]: For program point fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-18 07:57:47,587 INFO L899 garLoopResultBuilder]: For program point gFINAL(lines 17 21) no Hoare annotation was computed. [2023-02-18 07:57:47,588 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-02-18 07:57:47,588 INFO L899 garLoopResultBuilder]: For program point L19(lines 19 20) no Hoare annotation was computed. [2023-02-18 07:57:47,588 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2023-02-18 07:57:47,588 INFO L895 garLoopResultBuilder]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse0 (<= 0 (+ (- 1) g_~x))) (.cse1 (= |g_#in~x| g_~x)) (.cse2 (>= g_~x |g_#in~x|))) (and (let ((.cse3 (<= |g_#in~x| 2147483646))) (or (and .cse0 .cse1 .cse2 .cse3 (<= g_~x 2147483646)) (not .cse3))) (let ((.cse4 (<= |g_#in~x| 2147483647))) (or (and .cse0 .cse4 .cse1 .cse2 (<= g_~x 2147483647)) (not .cse4))))) [2023-02-18 07:57:47,588 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2023-02-18 07:57:47,589 INFO L899 garLoopResultBuilder]: For program point L20-4(line 20) no Hoare annotation was computed. [2023-02-18 07:57:47,589 INFO L899 garLoopResultBuilder]: For program point L20-5(line 20) no Hoare annotation was computed. [2023-02-18 07:57:47,589 INFO L895 garLoopResultBuilder]: At program point L20-6(line 20) the Hoare annotation is: (let ((.cse1 (<= 0 (+ (- 1) g_~x))) (.cse2 (<= g_~x 1)) (.cse3 (= |g_#in~x| g_~x)) (.cse4 (>= g_~x |g_#in~x|)) (.cse5 (<= |g_#t~ret2| 0)) (.cse6 (<= 0 |g_#t~ret2|))) (and (let ((.cse0 (<= |g_#in~x| 2147483647))) (or (not .cse0) (and .cse1 .cse0 .cse2 .cse3 .cse4 (<= g_~x 2147483647) .cse5 .cse6))) (let ((.cse7 (<= |g_#in~x| 2147483646))) (or (not .cse7) (and .cse1 .cse2 .cse3 .cse4 .cse7 .cse5 (<= g_~x 2147483646) .cse6))))) [2023-02-18 07:57:47,590 INFO L899 garLoopResultBuilder]: For program point L20-7(line 20) no Hoare annotation was computed. [2023-02-18 07:57:47,590 INFO L899 garLoopResultBuilder]: For program point L20-8(line 20) no Hoare annotation was computed. [2023-02-18 07:57:47,590 INFO L899 garLoopResultBuilder]: For program point L20-9(line 20) no Hoare annotation was computed. [2023-02-18 07:57:47,590 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 21) the Hoare annotation is: true [2023-02-18 07:57:47,590 INFO L899 garLoopResultBuilder]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-18 07:57:47,590 INFO L899 garLoopResultBuilder]: For program point gEXIT(lines 17 21) no Hoare annotation was computed. [2023-02-18 07:57:47,591 INFO L899 garLoopResultBuilder]: For program point gErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-18 07:57:47,591 INFO L899 garLoopResultBuilder]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-18 07:57:47,591 INFO L899 garLoopResultBuilder]: For program point gErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-18 07:57:47,591 INFO L899 garLoopResultBuilder]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-18 07:57:47,591 INFO L899 garLoopResultBuilder]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-18 07:57:47,591 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 07:57:47,592 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 07:57:47,592 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 07:57:47,593 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 2147483647) [2023-02-18 07:57:47,593 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 07:57:47,593 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2023-02-18 07:57:47,593 INFO L899 garLoopResultBuilder]: For program point L24(lines 24 27) no Hoare annotation was computed. [2023-02-18 07:57:47,596 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:57:47,598 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 07:57:47,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 07:57:47 BoogieIcfgContainer [2023-02-18 07:57:47,607 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 07:57:47,608 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 07:57:47,608 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 07:57:47,608 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 07:57:47,608 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:57:45" (3/4) ... [2023-02-18 07:57:47,614 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 07:57:47,619 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure f [2023-02-18 07:57:47,619 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2023-02-18 07:57:47,624 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-02-18 07:57:47,625 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-02-18 07:57:47,627 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 07:57:47,655 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 07:57:47,656 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 07:57:47,656 INFO L158 Benchmark]: Toolchain (without parser) took 2459.68ms. Allocated memory was 104.9MB in the beginning and 127.9MB in the end (delta: 23.1MB). Free memory was 69.7MB in the beginning and 58.8MB in the end (delta: 10.8MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2023-02-18 07:57:47,656 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory was 74.6MB in the beginning and 74.5MB in the end (delta: 111.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 07:57:47,656 INFO L158 Benchmark]: CACSL2BoogieTranslator took 135.05ms. Allocated memory is still 104.9MB. Free memory was 69.3MB in the beginning and 60.2MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-18 07:57:47,657 INFO L158 Benchmark]: Boogie Procedure Inliner took 15.53ms. Allocated memory is still 104.9MB. Free memory was 60.2MB in the beginning and 58.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 07:57:47,657 INFO L158 Benchmark]: Boogie Preprocessor took 9.80ms. Allocated memory is still 104.9MB. Free memory was 58.8MB in the beginning and 57.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 07:57:47,658 INFO L158 Benchmark]: RCFGBuilder took 225.85ms. Allocated memory is still 104.9MB. Free memory was 57.8MB in the beginning and 48.4MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 07:57:47,663 INFO L158 Benchmark]: TraceAbstraction took 2019.80ms. Allocated memory was 104.9MB in the beginning and 127.9MB in the end (delta: 23.1MB). Free memory was 47.7MB in the beginning and 62.0MB in the end (delta: -14.3MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2023-02-18 07:57:47,664 INFO L158 Benchmark]: Witness Printer took 47.91ms. Allocated memory is still 127.9MB. Free memory was 62.0MB in the beginning and 58.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-18 07:57:47,674 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 104.9MB. Free memory was 74.6MB in the beginning and 74.5MB in the end (delta: 111.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 135.05ms. Allocated memory is still 104.9MB. Free memory was 69.3MB in the beginning and 60.2MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 15.53ms. Allocated memory is still 104.9MB. Free memory was 60.2MB in the beginning and 58.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 9.80ms. Allocated memory is still 104.9MB. Free memory was 58.8MB in the beginning and 57.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 225.85ms. Allocated memory is still 104.9MB. Free memory was 57.8MB in the beginning and 48.4MB in the end (delta: 9.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 2019.80ms. Allocated memory was 104.9MB in the beginning and 127.9MB in the end (delta: 23.1MB). Free memory was 47.7MB in the beginning and 62.0MB in the end (delta: -14.3MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Witness Printer took 47.91ms. Allocated memory is still 127.9MB. Free memory was 62.0MB in the beginning and 58.8MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: 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 3 procedures, 43 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 8, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 199 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 187 mSDsluCounter, 746 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 483 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 373 IncrementalHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 263 mSDtfsCounter, 373 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 241 GetRequests, 191 SyntacticMatches, 8 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=79occurred in iteration=5, InterpolantAutomatonStates: 47, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 37 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 82 PreInvPairs, 88 NumberOfFragments, 181 HoareAnnotationTreeSize, 82 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 294 NumberOfCodeBlocks, 294 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 352 ConstructedInterpolants, 0 QuantifiedInterpolants, 691 SizeOfPredicates, 6 NumberOfNonLiveVariables, 204 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 288/300 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-02-18 07:57:47,691 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE