./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/rec_counter1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e8d55036 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-numeric/rec_counter1.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 de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 23:01:19,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 23:01:19,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 23:01:19,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 23:01:19,936 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 23:01:19,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 23:01:19,938 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 23:01:19,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 23:01:19,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 23:01:19,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 23:01:19,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 23:01:19,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 23:01:19,942 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 23:01:19,942 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 23:01:19,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 23:01:19,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 23:01:19,944 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 23:01:19,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 23:01:19,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 23:01:19,947 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 23:01:19,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 23:01:19,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 23:01:19,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 23:01:19,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 23:01:19,952 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 23:01:19,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 23:01:19,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 23:01:19,953 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 23:01:19,954 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 23:01:19,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 23:01:19,955 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 23:01:19,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 23:01:19,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 23:01:19,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 23:01:19,957 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 23:01:19,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 23:01:19,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 23:01:19,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 23:01:19,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 23:01:19,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 23:01:19,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 23:01:19,960 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-15 23:01:19,981 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 23:01:19,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 23:01:19,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 23:01:19,985 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 23:01:19,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 23:01:19,986 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 23:01:19,987 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 23:01:19,987 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 23:01:19,988 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 23:01:19,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 23:01:19,988 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 23:01:19,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 23:01:19,989 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 23:01:19,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 23:01:19,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 23:01:19,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 23:01:19,989 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-15 23:01:19,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 23:01:19,989 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 23:01:19,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 23:01:19,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 23:01:19,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 23:01:19,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 23:01:19,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 23:01:19,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 23:01:19,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 23:01:19,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 23:01:19,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 23:01:19,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 23:01:19,991 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 23:01:19,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 23:01:19,991 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 23:01:19,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 23:01:19,992 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 23:01:19,992 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de5b7f1cccf5c7fe435559014125bbfd73538586d5303d45f8d606cb31a4b74b [2023-02-15 23:01:20,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 23:01:20,232 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 23:01:20,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 23:01:20,234 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 23:01:20,235 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 23:01:20,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/rec_counter1.c [2023-02-15 23:01:21,274 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 23:01:21,422 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 23:01:21,423 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/rec_counter1.c [2023-02-15 23:01:21,426 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d115b8594/31ba86c287ed46f8a72f131f95fda93c/FLAGf05c8814c [2023-02-15 23:01:21,439 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d115b8594/31ba86c287ed46f8a72f131f95fda93c [2023-02-15 23:01:21,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 23:01:21,443 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 23:01:21,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 23:01:21,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 23:01:21,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 23:01:21,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:01:21" (1/1) ... [2023-02-15 23:01:21,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66bc9995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:21, skipping insertion in model container [2023-02-15 23:01:21,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:01:21" (1/1) ... [2023-02-15 23:01:21,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 23:01:21,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 23:01:21,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:01:21,582 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 23:01:21,594 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:01:21,603 INFO L208 MainTranslator]: Completed translation [2023-02-15 23:01:21,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:21 WrapperNode [2023-02-15 23:01:21,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 23:01:21,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 23:01:21,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 23:01:21,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 23:01:21,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:21" (1/1) ... [2023-02-15 23:01:21,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:21" (1/1) ... [2023-02-15 23:01:21,621 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 12 [2023-02-15 23:01:21,622 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 23:01:21,623 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 23:01:21,623 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 23:01:21,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 23:01:21,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:21" (1/1) ... [2023-02-15 23:01:21,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:21" (1/1) ... [2023-02-15 23:01:21,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:21" (1/1) ... [2023-02-15 23:01:21,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:21" (1/1) ... [2023-02-15 23:01:21,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:21" (1/1) ... [2023-02-15 23:01:21,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:21" (1/1) ... [2023-02-15 23:01:21,638 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:21" (1/1) ... [2023-02-15 23:01:21,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:21" (1/1) ... [2023-02-15 23:01:21,639 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 23:01:21,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 23:01:21,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 23:01:21,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 23:01:21,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:21" (1/1) ... [2023-02-15 23:01:21,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 23:01:21,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:21,665 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) [2023-02-15 23:01:21,683 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 [2023-02-15 23:01:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2023-02-15 23:01:21,722 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2023-02-15 23:01:21,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 23:01:21,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 23:01:21,758 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 23:01:21,759 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 23:01:21,874 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 23:01:21,879 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 23:01:21,879 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 23:01:21,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:01:21 BoogieIcfgContainer [2023-02-15 23:01:21,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 23:01:21,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 23:01:21,882 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 23:01:21,884 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 23:01:21,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 11:01:21" (1/3) ... [2023-02-15 23:01:21,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ee8298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:01:21, skipping insertion in model container [2023-02-15 23:01:21,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:21" (2/3) ... [2023-02-15 23:01:21,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9ee8298 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:01:21, skipping insertion in model container [2023-02-15 23:01:21,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:01:21" (3/3) ... [2023-02-15 23:01:21,886 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_counter1.c [2023-02-15 23:01:21,911 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 23:01:21,916 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-15 23:01:21,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 23:01:21,967 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;@1e3a6504, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 23:01:21,967 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-15 23:01:21,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 23:01:21,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 23:01:21,975 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:21,975 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:21,975 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:21,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:21,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1088965814, now seen corresponding path program 1 times [2023-02-15 23:01:21,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:21,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375657339] [2023-02-15 23:01:21,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:21,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:22,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:01:22,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:22,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375657339] [2023-02-15 23:01:22,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375657339] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:01:22,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:01:22,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 23:01:22,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927963578] [2023-02-15 23:01:22,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:01:22,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 23:01:22,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:22,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 23:01:22,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 23:01:22,226 INFO L87 Difference]: Start difference. First operand has 27 states, 17 states have (on average 1.588235294117647) internal successors, (27), 23 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 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) [2023-02-15 23:01:22,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:22,304 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2023-02-15 23:01:22,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 23:01:22,306 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 [2023-02-15 23:01:22,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:22,311 INFO L225 Difference]: With dead ends: 65 [2023-02-15 23:01:22,311 INFO L226 Difference]: Without dead ends: 39 [2023-02-15 23:01:22,313 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 [2023-02-15 23:01:22,315 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 35 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:22,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 98 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:01:22,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-15 23:01:22,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2023-02-15 23:01:22,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 29 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 23:01:22,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2023-02-15 23:01:22,345 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 7 [2023-02-15 23:01:22,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:22,345 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2023-02-15 23:01:22,346 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) [2023-02-15 23:01:22,346 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2023-02-15 23:01:22,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 23:01:22,346 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:22,347 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:22,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 23:01:22,348 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:22,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:22,348 INFO L85 PathProgramCache]: Analyzing trace with hash -601798096, now seen corresponding path program 1 times [2023-02-15 23:01:22,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:22,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337680543] [2023-02-15 23:01:22,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:22,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:22,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:01:22,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:22,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337680543] [2023-02-15 23:01:22,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337680543] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:01:22,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:01:22,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 23:01:22,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094667760] [2023-02-15 23:01:22,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:01:22,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 23:01:22,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:22,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 23:01:22,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 23:01:22,413 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-15 23:01:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:22,438 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-02-15 23:01:22,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 23:01:22,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 8 [2023-02-15 23:01:22,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:22,447 INFO L225 Difference]: With dead ends: 34 [2023-02-15 23:01:22,461 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 23:01:22,461 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 [2023-02-15 23:01:22,462 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:22,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 33 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:01:22,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 23:01:22,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-02-15 23:01:22,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 23:01:22,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2023-02-15 23:01:22,468 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 8 [2023-02-15 23:01:22,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:22,468 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2023-02-15 23:01:22,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-02-15 23:01:22,468 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2023-02-15 23:01:22,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 23:01:22,469 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:22,469 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:22,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 23:01:22,470 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:22,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:22,470 INFO L85 PathProgramCache]: Analyzing trace with hash -114082075, now seen corresponding path program 1 times [2023-02-15 23:01:22,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:22,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595842983] [2023-02-15 23:01:22,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:22,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:22,555 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:01:22,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:22,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595842983] [2023-02-15 23:01:22,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595842983] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:22,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553724454] [2023-02-15 23:01:22,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:22,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:22,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:22,558 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) [2023-02-15 23:01:22,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 23:01:22,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:22,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 23:01:22,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:22,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:01:22,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:22,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:01:22,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553724454] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:22,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:22,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-15 23:01:22,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805770174] [2023-02-15 23:01:22,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:22,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 23:01:22,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:22,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 23:01:22,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-15 23:01:22,693 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:01:22,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:22,746 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-02-15 23:01:22,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 23:01:22,747 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 23:01:22,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:22,749 INFO L225 Difference]: With dead ends: 39 [2023-02-15 23:01:22,749 INFO L226 Difference]: Without dead ends: 38 [2023-02-15 23:01:22,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-02-15 23:01:22,750 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 90 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:22,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 75 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:01:22,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-15 23:01:22,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2023-02-15 23:01:22,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 23:01:22,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-02-15 23:01:22,757 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 12 [2023-02-15 23:01:22,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:22,758 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-02-15 23:01:22,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:01:22,758 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-02-15 23:01:22,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 23:01:22,758 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:22,759 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:22,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:22,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:22,964 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:22,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:22,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1647452250, now seen corresponding path program 1 times [2023-02-15 23:01:22,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:22,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076641722] [2023-02-15 23:01:22,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:22,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:23,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 23:01:23,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:23,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076641722] [2023-02-15 23:01:23,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076641722] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:01:23,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:01:23,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 23:01:23,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023639367] [2023-02-15 23:01:23,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:01:23,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 23:01:23,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:23,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 23:01:23,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 23:01:23,020 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:01:23,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:23,034 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-02-15 23:01:23,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 23:01:23,035 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-15 23:01:23,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:23,035 INFO L225 Difference]: With dead ends: 34 [2023-02-15 23:01:23,035 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 23:01:23,036 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 [2023-02-15 23:01:23,037 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:23,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:01:23,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 23:01:23,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2023-02-15 23:01:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 26 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 23:01:23,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2023-02-15 23:01:23,052 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 16 [2023-02-15 23:01:23,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:23,052 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2023-02-15 23:01:23,052 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:01:23,052 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-02-15 23:01:23,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 23:01:23,053 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:23,053 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:23,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 23:01:23,053 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:23,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:23,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1647452195, now seen corresponding path program 1 times [2023-02-15 23:01:23,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:23,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845526015] [2023-02-15 23:01:23,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:23,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:23,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:23,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:23,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 23:01:23,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:23,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845526015] [2023-02-15 23:01:23,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845526015] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:01:23,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:01:23,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 23:01:23,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042640475] [2023-02-15 23:01:23,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:01:23,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 23:01:23,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:23,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 23:01:23,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 23:01:23,120 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:01:23,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:23,131 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-02-15 23:01:23,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 23:01:23,132 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-15 23:01:23,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:23,133 INFO L225 Difference]: With dead ends: 31 [2023-02-15 23:01:23,134 INFO L226 Difference]: Without dead ends: 30 [2023-02-15 23:01:23,134 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 [2023-02-15 23:01:23,135 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:23,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 35 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:01:23,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-15 23:01:23,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-02-15 23:01:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 23:01:23,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-02-15 23:01:23,148 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 16 [2023-02-15 23:01:23,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:23,149 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-02-15 23:01:23,149 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), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:01:23,149 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-02-15 23:01:23,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 23:01:23,149 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:23,150 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:23,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 23:01:23,150 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:23,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:23,151 INFO L85 PathProgramCache]: Analyzing trace with hash 468587862, now seen corresponding path program 1 times [2023-02-15 23:01:23,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:23,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271536966] [2023-02-15 23:01:23,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:23,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:23,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:23,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:23,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 23:01:23,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:23,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271536966] [2023-02-15 23:01:23,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271536966] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:01:23,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:01:23,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 23:01:23,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292411314] [2023-02-15 23:01:23,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:01:23,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 23:01:23,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:23,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 23:01:23,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 23:01:23,196 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:01:23,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:23,219 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2023-02-15 23:01:23,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 23:01:23,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-15 23:01:23,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:23,220 INFO L225 Difference]: With dead ends: 44 [2023-02-15 23:01:23,220 INFO L226 Difference]: Without dead ends: 41 [2023-02-15 23:01:23,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 23:01:23,221 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:23,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:01:23,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-15 23:01:23,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2023-02-15 23:01:23,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 23:01:23,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-02-15 23:01:23,226 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 17 [2023-02-15 23:01:23,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:23,227 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-02-15 23:01:23,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:01:23,227 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-02-15 23:01:23,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 23:01:23,228 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:23,228 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:23,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 23:01:23,228 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:23,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:23,229 INFO L85 PathProgramCache]: Analyzing trace with hash 468589560, now seen corresponding path program 1 times [2023-02-15 23:01:23,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:23,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464148373] [2023-02-15 23:01:23,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:23,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:23,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:23,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 23:01:23,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:23,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464148373] [2023-02-15 23:01:23,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464148373] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:01:23,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:01:23,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 23:01:23,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124289752] [2023-02-15 23:01:23,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:01:23,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 23:01:23,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:23,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 23:01:23,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 23:01:23,299 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:01:23,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:23,360 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2023-02-15 23:01:23,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 23:01:23,361 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-15 23:01:23,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:23,362 INFO L225 Difference]: With dead ends: 60 [2023-02-15 23:01:23,362 INFO L226 Difference]: Without dead ends: 38 [2023-02-15 23:01:23,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-02-15 23:01:23,363 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:23,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 50 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:01:23,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-15 23:01:23,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-02-15 23:01:23,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 23:01:23,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-02-15 23:01:23,368 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 17 [2023-02-15 23:01:23,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:23,368 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-02-15 23:01:23,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:01:23,368 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-02-15 23:01:23,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 23:01:23,369 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:23,369 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:23,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 23:01:23,369 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:23,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:23,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1297249887, now seen corresponding path program 1 times [2023-02-15 23:01:23,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:23,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412650526] [2023-02-15 23:01:23,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:23,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:23,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:23,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:23,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:23,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:23,476 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 23:01:23,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:23,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412650526] [2023-02-15 23:01:23,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412650526] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:23,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561411161] [2023-02-15 23:01:23,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:23,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:23,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:23,503 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) [2023-02-15 23:01:23,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 23:01:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:23,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 23:01:23,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:23,596 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 23:01:23,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 23:01:23,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561411161] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:01:23,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 23:01:23,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2023-02-15 23:01:23,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034809744] [2023-02-15 23:01:23,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:01:23,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 23:01:23,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:23,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 23:01:23,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-02-15 23:01:23,598 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 23:01:23,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:23,632 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2023-02-15 23:01:23,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 23:01:23,633 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-02-15 23:01:23,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:23,633 INFO L225 Difference]: With dead ends: 38 [2023-02-15 23:01:23,633 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 23:01:23,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-02-15 23:01:23,634 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:23,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 73 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:01:23,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 23:01:23,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-15 23:01:23,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 23:01:23,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2023-02-15 23:01:23,639 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 28 [2023-02-15 23:01:23,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:23,639 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2023-02-15 23:01:23,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 23:01:23,639 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2023-02-15 23:01:23,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 23:01:23,640 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:23,640 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:23,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:23,844 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 [2023-02-15 23:01:23,845 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:23,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:23,845 INFO L85 PathProgramCache]: Analyzing trace with hash 255701234, now seen corresponding path program 1 times [2023-02-15 23:01:23,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:23,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756266362] [2023-02-15 23:01:23,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:23,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:23,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:23,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:23,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:23,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:23,926 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-15 23:01:23,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:23,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756266362] [2023-02-15 23:01:23,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756266362] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:23,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433849988] [2023-02-15 23:01:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:23,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:23,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:23,928 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:23,930 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 23:01:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:23,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 23:01:23,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:24,031 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 23:01:24,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:24,124 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 23:01:24,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433849988] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:24,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:24,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 15 [2023-02-15 23:01:24,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141233233] [2023-02-15 23:01:24,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:24,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 23:01:24,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:24,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 23:01:24,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-02-15 23:01:24,125 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 13 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 23:01:24,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:24,322 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2023-02-15 23:01:24,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 23:01:24,322 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 13 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2023-02-15 23:01:24,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:24,323 INFO L225 Difference]: With dead ends: 82 [2023-02-15 23:01:24,323 INFO L226 Difference]: Without dead ends: 65 [2023-02-15 23:01:24,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2023-02-15 23:01:24,324 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 89 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:24,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 70 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:01:24,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-02-15 23:01:24,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2023-02-15 23:01:24,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 47 states have internal predecessors, (56), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 23:01:24,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2023-02-15 23:01:24,329 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 31 [2023-02-15 23:01:24,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:24,329 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2023-02-15 23:01:24,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 13 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 23:01:24,329 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2023-02-15 23:01:24,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-15 23:01:24,330 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:24,330 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:24,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:24,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:24,553 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:24,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:24,554 INFO L85 PathProgramCache]: Analyzing trace with hash -653979726, now seen corresponding path program 2 times [2023-02-15 23:01:24,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:24,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216192936] [2023-02-15 23:01:24,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:24,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:24,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:24,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:24,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:24,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:24,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:24,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:24,848 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 38 proven. 19 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-02-15 23:01:24,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:24,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216192936] [2023-02-15 23:01:24,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216192936] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:24,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569007788] [2023-02-15 23:01:24,851 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:01:24,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:24,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:24,858 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:24,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 23:01:24,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:01:24,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:24,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 23:01:24,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 43 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-02-15 23:01:24,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 44 proven. 7 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-02-15 23:01:25,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569007788] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:25,074 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:25,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 16 [2023-02-15 23:01:25,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764565992] [2023-02-15 23:01:25,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:25,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 23:01:25,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:25,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 23:01:25,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-02-15 23:01:25,076 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 23:01:25,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:25,336 INFO L93 Difference]: Finished difference Result 103 states and 123 transitions. [2023-02-15 23:01:25,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 23:01:25,337 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 59 [2023-02-15 23:01:25,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:25,337 INFO L225 Difference]: With dead ends: 103 [2023-02-15 23:01:25,337 INFO L226 Difference]: Without dead ends: 66 [2023-02-15 23:01:25,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 120 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2023-02-15 23:01:25,338 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 49 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:25,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 108 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:01:25,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-15 23:01:25,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2023-02-15 23:01:25,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 56 states have internal predecessors, (62), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 23:01:25,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2023-02-15 23:01:25,343 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 59 [2023-02-15 23:01:25,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:25,344 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2023-02-15 23:01:25,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 23:01:25,344 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2023-02-15 23:01:25,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-02-15 23:01:25,348 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:25,349 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:25,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-15 23:01:25,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:25,556 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:25,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:25,556 INFO L85 PathProgramCache]: Analyzing trace with hash 998349058, now seen corresponding path program 3 times [2023-02-15 23:01:25,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:25,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145027054] [2023-02-15 23:01:25,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:25,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:25,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:25,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:25,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:25,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:25,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:25,745 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 4 proven. 75 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-15 23:01:25,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:25,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145027054] [2023-02-15 23:01:25,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145027054] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:25,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415781733] [2023-02-15 23:01:25,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 23:01:25,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:25,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:25,767 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:25,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 23:01:25,796 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 23:01:25,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:25,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 23:01:25,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-02-15 23:01:25,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2023-02-15 23:01:25,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415781733] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:25,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:25,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 7] total 25 [2023-02-15 23:01:25,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154477065] [2023-02-15 23:01:25,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:25,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-15 23:01:25,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:25,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-15 23:01:25,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2023-02-15 23:01:25,989 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 22 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 23:01:26,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:26,447 INFO L93 Difference]: Finished difference Result 121 states and 141 transitions. [2023-02-15 23:01:26,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-02-15 23:01:26,448 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 22 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 65 [2023-02-15 23:01:26,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:26,448 INFO L225 Difference]: With dead ends: 121 [2023-02-15 23:01:26,448 INFO L226 Difference]: Without dead ends: 103 [2023-02-15 23:01:26,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=754, Invalid=2668, Unknown=0, NotChecked=0, Total=3422 [2023-02-15 23:01:26,450 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 156 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:26,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 112 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:01:26,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-02-15 23:01:26,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2023-02-15 23:01:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 88 states have (on average 1.125) internal successors, (99), 88 states have internal predecessors, (99), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 23:01:26,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2023-02-15 23:01:26,463 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 65 [2023-02-15 23:01:26,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:26,463 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2023-02-15 23:01:26,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 22 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 23:01:26,463 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2023-02-15 23:01:26,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-02-15 23:01:26,469 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:26,469 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:26,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:26,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-15 23:01:26,674 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:26,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:26,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1842269305, now seen corresponding path program 4 times [2023-02-15 23:01:26,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:26,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748814750] [2023-02-15 23:01:26,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:26,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:26,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 23:01:26,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:26,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:26,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:26,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:27,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:27,058 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 7 proven. 227 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-02-15 23:01:27,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:27,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748814750] [2023-02-15 23:01:27,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748814750] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:27,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845644270] [2023-02-15 23:01:27,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 23:01:27,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:27,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:27,060 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:27,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 23:01:27,102 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 23:01:27,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:27,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 23:01:27,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:27,192 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 12 proven. 215 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-02-15 23:01:27,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:27,899 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 12 proven. 215 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-02-15 23:01:27,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845644270] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:27,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:27,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 33 [2023-02-15 23:01:27,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001491871] [2023-02-15 23:01:27,901 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:27,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-02-15 23:01:27,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:27,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-02-15 23:01:27,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=922, Unknown=0, NotChecked=0, Total=1122 [2023-02-15 23:01:27,902 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand has 34 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 25 states have internal predecessors, (88), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 23:01:28,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:28,419 INFO L93 Difference]: Finished difference Result 402 states and 459 transitions. [2023-02-15 23:01:28,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-02-15 23:01:28,420 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 25 states have internal predecessors, (88), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 104 [2023-02-15 23:01:28,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:28,422 INFO L225 Difference]: With dead ends: 402 [2023-02-15 23:01:28,422 INFO L226 Difference]: Without dead ends: 306 [2023-02-15 23:01:28,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2053 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=938, Invalid=4612, Unknown=0, NotChecked=0, Total=5550 [2023-02-15 23:01:28,425 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 172 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:28,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 137 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:01:28,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-02-15 23:01:28,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 157. [2023-02-15 23:01:28,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 143 states have (on average 1.1118881118881119) internal successors, (159), 143 states have internal predecessors, (159), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 11 states have call predecessors, (11), 2 states have call successors, (11) [2023-02-15 23:01:28,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 173 transitions. [2023-02-15 23:01:28,447 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 173 transitions. Word has length 104 [2023-02-15 23:01:28,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:28,447 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 173 transitions. [2023-02-15 23:01:28,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 25 states have internal predecessors, (88), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 23:01:28,447 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 173 transitions. [2023-02-15 23:01:28,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2023-02-15 23:01:28,448 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:28,449 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:28,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:28,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:28,653 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:28,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:28,654 INFO L85 PathProgramCache]: Analyzing trace with hash -11314622, now seen corresponding path program 5 times [2023-02-15 23:01:28,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:28,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169545707] [2023-02-15 23:01:28,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:28,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:28,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:28,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:28,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:28,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:28,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:29,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 704 proven. 26 refuted. 0 times theorem prover too weak. 625 trivial. 0 not checked. [2023-02-15 23:01:29,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:29,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169545707] [2023-02-15 23:01:29,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169545707] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:29,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554217411] [2023-02-15 23:01:29,094 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 23:01:29,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:29,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:29,096 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:29,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 23:01:29,153 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-02-15 23:01:29,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:29,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 23:01:29,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:29,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 512 proven. 26 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2023-02-15 23:01:29,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:29,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1355 backedges. 516 proven. 22 refuted. 0 times theorem prover too weak. 817 trivial. 0 not checked. [2023-02-15 23:01:29,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554217411] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:29,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:29,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2023-02-15 23:01:29,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166342159] [2023-02-15 23:01:29,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:29,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 23:01:29,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:29,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 23:01:29,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-02-15 23:01:29,579 INFO L87 Difference]: Start difference. First operand 157 states and 173 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 23:01:29,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:29,735 INFO L93 Difference]: Finished difference Result 305 states and 341 transitions. [2023-02-15 23:01:29,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-15 23:01:29,736 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 179 [2023-02-15 23:01:29,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:29,737 INFO L225 Difference]: With dead ends: 305 [2023-02-15 23:01:29,737 INFO L226 Difference]: Without dead ends: 187 [2023-02-15 23:01:29,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 402 GetRequests, 370 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2023-02-15 23:01:29,740 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 30 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:29,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 153 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:01:29,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-02-15 23:01:29,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2023-02-15 23:01:29,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 168 states have (on average 1.0892857142857142) internal successors, (183), 168 states have internal predecessors, (183), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) [2023-02-15 23:01:29,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 198 transitions. [2023-02-15 23:01:29,754 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 198 transitions. Word has length 179 [2023-02-15 23:01:29,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:29,755 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 198 transitions. [2023-02-15 23:01:29,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 23:01:29,755 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 198 transitions. [2023-02-15 23:01:29,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-02-15 23:01:29,758 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:29,758 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:29,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:29,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:29,963 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:29,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:29,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1901189011, now seen corresponding path program 6 times [2023-02-15 23:01:29,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:29,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982268668] [2023-02-15 23:01:29,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:29,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:29,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1750 backedges. 848 proven. 53 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2023-02-15 23:01:30,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:30,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982268668] [2023-02-15 23:01:30,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982268668] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:30,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326337524] [2023-02-15 23:01:30,447 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 23:01:30,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:30,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:30,466 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:30,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 23:01:30,536 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-15 23:01:30,536 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:30,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 23:01:30,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:30,702 INFO L134 CoverageAnalysis]: Checked inductivity of 1750 backedges. 607 proven. 68 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2023-02-15 23:01:30,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:31,063 INFO L134 CoverageAnalysis]: Checked inductivity of 1750 backedges. 607 proven. 68 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2023-02-15 23:01:31,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326337524] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:31,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:31,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 39 [2023-02-15 23:01:31,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036320019] [2023-02-15 23:01:31,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:31,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-02-15 23:01:31,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:31,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-02-15 23:01:31,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1306, Unknown=0, NotChecked=0, Total=1482 [2023-02-15 23:01:31,066 INFO L87 Difference]: Start difference. First operand 183 states and 198 transitions. Second operand has 39 states, 39 states have (on average 2.358974358974359) internal successors, (92), 36 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 23:01:32,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:32,459 INFO L93 Difference]: Finished difference Result 753 states and 863 transitions. [2023-02-15 23:01:32,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-02-15 23:01:32,459 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.358974358974359) internal successors, (92), 36 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 194 [2023-02-15 23:01:32,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:32,463 INFO L225 Difference]: With dead ends: 753 [2023-02-15 23:01:32,463 INFO L226 Difference]: Without dead ends: 593 [2023-02-15 23:01:32,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2341 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1535, Invalid=8167, Unknown=0, NotChecked=0, Total=9702 [2023-02-15 23:01:32,466 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 288 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:32,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 372 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 23:01:32,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-02-15 23:01:32,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 245. [2023-02-15 23:01:32,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 228 states have (on average 1.0921052631578947) internal successors, (249), 228 states have internal predecessors, (249), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2023-02-15 23:01:32,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 266 transitions. [2023-02-15 23:01:32,487 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 266 transitions. Word has length 194 [2023-02-15 23:01:32,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:32,488 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 266 transitions. [2023-02-15 23:01:32,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.358974358974359) internal successors, (92), 36 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 23:01:32,488 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 266 transitions. [2023-02-15 23:01:32,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-02-15 23:01:32,490 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:32,490 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:32,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-15 23:01:32,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-15 23:01:32,696 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:32,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:32,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1164703187, now seen corresponding path program 7 times [2023-02-15 23:01:32,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:32,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585568049] [2023-02-15 23:01:32,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:32,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:32,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:32,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:33,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:33,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:33,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:33,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:33,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:33,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:33,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:33,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:33,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:33,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2765 backedges. 1655 proven. 89 refuted. 0 times theorem prover too weak. 1021 trivial. 0 not checked. [2023-02-15 23:01:33,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:33,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585568049] [2023-02-15 23:01:33,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585568049] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:33,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134703828] [2023-02-15 23:01:33,404 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 23:01:33,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:33,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:33,425 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:33,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 23:01:33,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:33,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 23:01:33,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:33,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2765 backedges. 1468 proven. 185 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2023-02-15 23:01:33,705 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2765 backedges. 1481 proven. 172 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2023-02-15 23:01:34,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134703828] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:34,988 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:34,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 24] total 31 [2023-02-15 23:01:34,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121993781] [2023-02-15 23:01:34,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:34,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-15 23:01:34,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:34,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-15 23:01:34,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2023-02-15 23:01:34,989 INFO L87 Difference]: Start difference. First operand 245 states and 266 transitions. Second operand has 31 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 27 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 23:01:35,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:35,715 INFO L93 Difference]: Finished difference Result 503 states and 548 transitions. [2023-02-15 23:01:35,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-02-15 23:01:35,715 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 27 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 224 [2023-02-15 23:01:35,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:35,716 INFO L225 Difference]: With dead ends: 503 [2023-02-15 23:01:35,716 INFO L226 Difference]: Without dead ends: 331 [2023-02-15 23:01:35,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 440 SyntacticMatches, 21 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1210 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=734, Invalid=3556, Unknown=0, NotChecked=0, Total=4290 [2023-02-15 23:01:35,718 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 50 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:35,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 234 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:01:35,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-02-15 23:01:35,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 301. [2023-02-15 23:01:35,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 281 states have (on average 1.0782918149466192) internal successors, (303), 281 states have internal predecessors, (303), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) [2023-02-15 23:01:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 323 transitions. [2023-02-15 23:01:35,735 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 323 transitions. Word has length 224 [2023-02-15 23:01:35,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:35,736 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 323 transitions. [2023-02-15 23:01:35,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 27 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 23:01:35,736 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 323 transitions. [2023-02-15 23:01:35,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-02-15 23:01:35,738 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:35,738 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:35,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-15 23:01:35,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-15 23:01:35,945 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:35,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:35,945 INFO L85 PathProgramCache]: Analyzing trace with hash 291488210, now seen corresponding path program 8 times [2023-02-15 23:01:35,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:35,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659174900] [2023-02-15 23:01:35,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:35,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:35,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3128 backedges. 1925 proven. 134 refuted. 0 times theorem prover too weak. 1069 trivial. 0 not checked. [2023-02-15 23:01:36,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:36,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659174900] [2023-02-15 23:01:36,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659174900] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:36,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55075895] [2023-02-15 23:01:36,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:01:36,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:36,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:36,752 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:36,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 23:01:36,877 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:01:36,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:36,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-15 23:01:36,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:37,129 INFO L134 CoverageAnalysis]: Checked inductivity of 3128 backedges. 1888 proven. 324 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2023-02-15 23:01:37,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:38,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3128 backedges. 1907 proven. 305 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2023-02-15 23:01:38,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55075895] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:38,823 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:38,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29, 29] total 38 [2023-02-15 23:01:38,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752175103] [2023-02-15 23:01:38,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:38,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-02-15 23:01:38,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:38,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-02-15 23:01:38,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1252, Unknown=0, NotChecked=0, Total=1406 [2023-02-15 23:01:38,826 INFO L87 Difference]: Start difference. First operand 301 states and 323 transitions. Second operand has 38 states, 38 states have (on average 2.5526315789473686) internal successors, (97), 33 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-15 23:01:40,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:40,156 INFO L93 Difference]: Finished difference Result 620 states and 665 transitions. [2023-02-15 23:01:40,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-02-15 23:01:40,156 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.5526315789473686) internal successors, (97), 33 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 233 [2023-02-15 23:01:40,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:40,159 INFO L225 Difference]: With dead ends: 620 [2023-02-15 23:01:40,160 INFO L226 Difference]: Without dead ends: 433 [2023-02-15 23:01:40,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 450 SyntacticMatches, 26 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2289 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1214, Invalid=6268, Unknown=0, NotChecked=0, Total=7482 [2023-02-15 23:01:40,162 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 62 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:40,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 337 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1240 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 23:01:40,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-02-15 23:01:40,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 381. [2023-02-15 23:01:40,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 357 states have (on average 1.0672268907563025) internal successors, (381), 357 states have internal predecessors, (381), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 21 states have call predecessors, (21), 2 states have call successors, (21) [2023-02-15 23:01:40,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 405 transitions. [2023-02-15 23:01:40,189 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 405 transitions. Word has length 233 [2023-02-15 23:01:40,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:40,190 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 405 transitions. [2023-02-15 23:01:40,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.5526315789473686) internal successors, (97), 33 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-15 23:01:40,190 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 405 transitions. [2023-02-15 23:01:40,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-02-15 23:01:40,192 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:40,193 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:40,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:40,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-15 23:01:40,398 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:40,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:40,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1984522018, now seen corresponding path program 9 times [2023-02-15 23:01:40,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:40,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072101468] [2023-02-15 23:01:40,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:40,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:40,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:40,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:40,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:41,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:41,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:41,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:41,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:41,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:41,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:41,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:41,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:41,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3385 backedges. 2154 proven. 559 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2023-02-15 23:01:41,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:41,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072101468] [2023-02-15 23:01:41,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072101468] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:41,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205027836] [2023-02-15 23:01:41,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 23:01:41,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:41,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:41,829 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:41,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 23:01:41,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-02-15 23:01:41,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:41,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 23:01:41,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3385 backedges. 838 proven. 70 refuted. 0 times theorem prover too weak. 2477 trivial. 0 not checked. [2023-02-15 23:01:42,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:43,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3385 backedges. 838 proven. 70 refuted. 0 times theorem prover too weak. 2477 trivial. 0 not checked. [2023-02-15 23:01:43,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205027836] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:43,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:43,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 17, 17] total 71 [2023-02-15 23:01:43,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515266481] [2023-02-15 23:01:43,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:43,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-02-15 23:01:43,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:43,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-02-15 23:01:43,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=4430, Unknown=0, NotChecked=0, Total=4970 [2023-02-15 23:01:43,097 INFO L87 Difference]: Start difference. First operand 381 states and 405 transitions. Second operand has 71 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 63 states have internal predecessors, (151), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 23:01:50,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:50,802 INFO L93 Difference]: Finished difference Result 891 states and 1016 transitions. [2023-02-15 23:01:50,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 279 states. [2023-02-15 23:01:50,803 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 63 states have internal predecessors, (151), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 239 [2023-02-15 23:01:50,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:50,810 INFO L225 Difference]: With dead ends: 891 [2023-02-15 23:01:50,810 INFO L226 Difference]: Without dead ends: 805 [2023-02-15 23:01:50,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 813 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42447 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=19076, Invalid=100986, Unknown=0, NotChecked=0, Total=120062 [2023-02-15 23:01:50,822 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 445 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 1909 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:50,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 326 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1909 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 23:01:50,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-02-15 23:01:50,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 432. [2023-02-15 23:01:50,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 408 states have (on average 1.0735294117647058) internal successors, (438), 408 states have internal predecessors, (438), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 21 states have call predecessors, (21), 2 states have call successors, (21) [2023-02-15 23:01:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 462 transitions. [2023-02-15 23:01:50,891 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 462 transitions. Word has length 239 [2023-02-15 23:01:50,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:50,891 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 462 transitions. [2023-02-15 23:01:50,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 63 states have internal predecessors, (151), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 23:01:50,891 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 462 transitions. [2023-02-15 23:01:50,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-02-15 23:01:50,894 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:50,894 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:50,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:51,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-15 23:01:51,100 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:51,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:51,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1894588653, now seen corresponding path program 10 times [2023-02-15 23:01:51,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:51,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622678641] [2023-02-15 23:01:51,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:51,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:51,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:51,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:52,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:52,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:52,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:52,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:52,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:52,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:52,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:52,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:52,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4690 backedges. 3104 proven. 823 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2023-02-15 23:01:52,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:52,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622678641] [2023-02-15 23:01:52,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622678641] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:52,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012710084] [2023-02-15 23:01:52,607 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 23:01:52,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:52,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:52,609 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:52,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-15 23:01:52,748 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 23:01:52,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:52,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-15 23:01:52,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:52,986 INFO L134 CoverageAnalysis]: Checked inductivity of 4690 backedges. 3139 proven. 776 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2023-02-15 23:01:52,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:55,309 INFO L134 CoverageAnalysis]: Checked inductivity of 4690 backedges. 3173 proven. 742 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2023-02-15 23:01:55,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012710084] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:55,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:55,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 39, 39] total 46 [2023-02-15 23:01:55,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672021477] [2023-02-15 23:01:55,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:55,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-02-15 23:01:55,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:55,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-02-15 23:01:55,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1847, Unknown=0, NotChecked=0, Total=2070 [2023-02-15 23:01:55,312 INFO L87 Difference]: Start difference. First operand 432 states and 462 transitions. Second operand has 46 states, 46 states have (on average 2.4565217391304346) internal successors, (113), 37 states have internal predecessors, (113), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-02-15 23:01:56,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:56,865 INFO L93 Difference]: Finished difference Result 572 states and 614 transitions. [2023-02-15 23:01:56,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-02-15 23:01:56,866 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.4565217391304346) internal successors, (113), 37 states have internal predecessors, (113), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 266 [2023-02-15 23:01:56,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:56,868 INFO L225 Difference]: With dead ends: 572 [2023-02-15 23:01:56,868 INFO L226 Difference]: Without dead ends: 469 [2023-02-15 23:01:56,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 683 GetRequests, 516 SyntacticMatches, 36 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4775 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2665, Invalid=14891, Unknown=0, NotChecked=0, Total=17556 [2023-02-15 23:01:56,871 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 81 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:56,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 320 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 23:01:56,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-02-15 23:01:56,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 435. [2023-02-15 23:01:56,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 411 states have (on average 1.0705596107055961) internal successors, (440), 411 states have internal predecessors, (440), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 21 states have call predecessors, (21), 2 states have call successors, (21) [2023-02-15 23:01:56,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 464 transitions. [2023-02-15 23:01:56,904 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 464 transitions. Word has length 266 [2023-02-15 23:01:56,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:56,905 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 464 transitions. [2023-02-15 23:01:56,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.4565217391304346) internal successors, (113), 37 states have internal predecessors, (113), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-02-15 23:01:56,905 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 464 transitions. [2023-02-15 23:01:56,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-02-15 23:01:56,907 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:56,908 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:56,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:57,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-15 23:01:57,113 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:57,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:57,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2102321518, now seen corresponding path program 11 times [2023-02-15 23:01:57,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:57,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833649579] [2023-02-15 23:01:57,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:57,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:57,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:57,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:57,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:57,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:57,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:57,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:57,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:57,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:58,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:58,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:58,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:58,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:58,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:58,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:58,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:58,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 4850 backedges. 10 proven. 3987 refuted. 0 times theorem prover too weak. 853 trivial. 0 not checked. [2023-02-15 23:01:58,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:58,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833649579] [2023-02-15 23:01:58,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833649579] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:58,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751669352] [2023-02-15 23:01:58,288 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 23:01:58,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:58,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:58,289 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:58,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-15 23:01:58,469 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-02-15 23:01:58,469 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:58,471 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-15 23:01:58,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:59,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4850 backedges. 1818 proven. 330 refuted. 0 times theorem prover too weak. 2702 trivial. 0 not checked. [2023-02-15 23:01:59,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4850 backedges. 1818 proven. 330 refuted. 0 times theorem prover too weak. 2702 trivial. 0 not checked. [2023-02-15 23:02:00,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751669352] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:00,285 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:02:00,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 33] total 96 [2023-02-15 23:02:00,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850859870] [2023-02-15 23:02:00,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:00,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-02-15 23:02:00,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:00,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-02-15 23:02:00,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1650, Invalid=7662, Unknown=0, NotChecked=0, Total=9312 [2023-02-15 23:02:00,288 INFO L87 Difference]: Start difference. First operand 435 states and 464 transitions. Second operand has 97 states, 96 states have (on average 2.0104166666666665) internal successors, (193), 87 states have internal predecessors, (193), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-02-15 23:02:05,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:05,262 INFO L93 Difference]: Finished difference Result 700 states and 780 transitions. [2023-02-15 23:02:05,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2023-02-15 23:02:05,263 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 2.0104166666666665) internal successors, (193), 87 states have internal predecessors, (193), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 269 [2023-02-15 23:02:05,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:05,265 INFO L225 Difference]: With dead ends: 700 [2023-02-15 23:02:05,265 INFO L226 Difference]: Without dead ends: 646 [2023-02-15 23:02:05,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 775 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30966 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=20959, Invalid=59981, Unknown=0, NotChecked=0, Total=80940 [2023-02-15 23:02:05,272 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1133 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:05,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1151 Valid, 179 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:02:05,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2023-02-15 23:02:05,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 564. [2023-02-15 23:02:05,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 539 states have (on average 1.0871985157699444) internal successors, (586), 539 states have internal predecessors, (586), 3 states have call successors, (3), 2 states have call predecessors, (3), 21 states have return successors, (22), 22 states have call predecessors, (22), 2 states have call successors, (22) [2023-02-15 23:02:05,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 611 transitions. [2023-02-15 23:02:05,316 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 611 transitions. Word has length 269 [2023-02-15 23:02:05,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:05,317 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 611 transitions. [2023-02-15 23:02:05,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 2.0104166666666665) internal successors, (193), 87 states have internal predecessors, (193), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-02-15 23:02:05,317 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 611 transitions. [2023-02-15 23:02:05,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2023-02-15 23:02:05,320 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:05,320 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 14, 13, 13, 13, 13, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:05,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:05,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:05,525 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:02:05,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:05,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1084036246, now seen corresponding path program 12 times [2023-02-15 23:02:05,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:05,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250534329] [2023-02-15 23:02:05,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:05,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:05,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 23:02:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:06,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:06,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:06,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:06,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:06,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:06,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:06,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:06,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:06,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:06,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:06,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:07,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:07,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 10132 backedges. 13 proven. 7885 refuted. 0 times theorem prover too weak. 2234 trivial. 0 not checked. [2023-02-15 23:02:07,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:07,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250534329] [2023-02-15 23:02:07,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250534329] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:02:07,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824296190] [2023-02-15 23:02:07,133 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 23:02:07,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:07,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:07,135 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:02:07,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-15 23:02:07,339 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2023-02-15 23:02:07,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:07,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 23:02:07,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:07,813 INFO L134 CoverageAnalysis]: Checked inductivity of 10132 backedges. 4626 proven. 1997 refuted. 0 times theorem prover too weak. 3509 trivial. 0 not checked. [2023-02-15 23:02:07,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 10132 backedges. 4626 proven. 1997 refuted. 0 times theorem prover too weak. 3509 trivial. 0 not checked. [2023-02-15 23:02:09,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824296190] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:09,200 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:02:09,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 25, 25] total 76 [2023-02-15 23:02:09,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148499860] [2023-02-15 23:02:09,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:09,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-02-15 23:02:09,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:09,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-02-15 23:02:09,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=875, Invalid=4977, Unknown=0, NotChecked=0, Total=5852 [2023-02-15 23:02:09,209 INFO L87 Difference]: Start difference. First operand 564 states and 611 transitions. Second operand has 77 states, 76 states have (on average 2.276315789473684) internal successors, (173), 64 states have internal predecessors, (173), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) [2023-02-15 23:02:14,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:14,991 INFO L93 Difference]: Finished difference Result 1199 states and 1327 transitions. [2023-02-15 23:02:14,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2023-02-15 23:02:14,991 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 2.276315789473684) internal successors, (173), 64 states have internal predecessors, (173), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) Word has length 365 [2023-02-15 23:02:14,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:14,994 INFO L225 Difference]: With dead ends: 1199 [2023-02-15 23:02:14,995 INFO L226 Difference]: Without dead ends: 907 [2023-02-15 23:02:15,000 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1030 GetRequests, 709 SyntacticMatches, 0 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47401 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=24190, Invalid=79816, Unknown=0, NotChecked=0, Total=104006 [2023-02-15 23:02:15,001 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1062 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:15,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 174 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:02:15,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2023-02-15 23:02:15,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 711. [2023-02-15 23:02:15,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 683 states have (on average 1.1010248901903368) internal successors, (752), 683 states have internal predecessors, (752), 3 states have call successors, (3), 2 states have call predecessors, (3), 24 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2023-02-15 23:02:15,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 780 transitions. [2023-02-15 23:02:15,067 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 780 transitions. Word has length 365 [2023-02-15 23:02:15,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:15,068 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 780 transitions. [2023-02-15 23:02:15,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 2.276315789473684) internal successors, (173), 64 states have internal predecessors, (173), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) [2023-02-15 23:02:15,068 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 780 transitions. [2023-02-15 23:02:15,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2023-02-15 23:02:15,072 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:15,072 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 17, 16, 16, 16, 16, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:15,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:15,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:15,278 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:02:15,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:15,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1401567886, now seen corresponding path program 13 times [2023-02-15 23:02:15,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:15,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923926512] [2023-02-15 23:02:15,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:15,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:15,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 23:02:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:16,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:16,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:17,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:17,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:17,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:17,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:17,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:17,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:18,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:18,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:18,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:18,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:18,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:18,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:18,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:18,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:18,543 INFO L134 CoverageAnalysis]: Checked inductivity of 23907 backedges. 14848 proven. 1579 refuted. 0 times theorem prover too weak. 7480 trivial. 0 not checked. [2023-02-15 23:02:18,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:18,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923926512] [2023-02-15 23:02:18,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923926512] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:02:18,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320076479] [2023-02-15 23:02:18,544 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 23:02:18,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:18,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:18,546 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:02:18,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-15 23:02:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:18,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 1187 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-15 23:02:18,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 23907 backedges. 14889 proven. 1520 refuted. 0 times theorem prover too weak. 7498 trivial. 0 not checked. [2023-02-15 23:02:19,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:23,793 INFO L134 CoverageAnalysis]: Checked inductivity of 23907 backedges. 14942 proven. 1467 refuted. 0 times theorem prover too weak. 7498 trivial. 0 not checked. [2023-02-15 23:02:23,794 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320076479] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:23,794 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:02:23,794 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 49, 49] total 56 [2023-02-15 23:02:23,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048611445] [2023-02-15 23:02:23,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:23,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-02-15 23:02:23,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:23,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-02-15 23:02:23,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=2754, Unknown=0, NotChecked=0, Total=3080 [2023-02-15 23:02:23,825 INFO L87 Difference]: Start difference. First operand 711 states and 780 transitions. Second operand has 56 states, 56 states have (on average 2.4107142857142856) internal successors, (135), 45 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-02-15 23:02:26,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:26,488 INFO L93 Difference]: Finished difference Result 1127 states and 1247 transitions. [2023-02-15 23:02:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2023-02-15 23:02:26,488 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.4107142857142856) internal successors, (135), 45 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) Word has length 527 [2023-02-15 23:02:26,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:26,505 INFO L225 Difference]: With dead ends: 1127 [2023-02-15 23:02:26,505 INFO L226 Difference]: Without dead ends: 748 [2023-02-15 23:02:26,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1265 GetRequests, 1038 SyntacticMatches, 46 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9561 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5194, Invalid=28112, Unknown=0, NotChecked=0, Total=33306 [2023-02-15 23:02:26,511 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 94 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 1511 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:26,511 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 441 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1511 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 23:02:26,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2023-02-15 23:02:26,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 714. [2023-02-15 23:02:26,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 686 states have (on average 1.0889212827988337) internal successors, (747), 686 states have internal predecessors, (747), 3 states have call successors, (3), 2 states have call predecessors, (3), 24 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2023-02-15 23:02:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 775 transitions. [2023-02-15 23:02:26,606 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 775 transitions. Word has length 527 [2023-02-15 23:02:26,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:26,607 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 775 transitions. [2023-02-15 23:02:26,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.4107142857142856) internal successors, (135), 45 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-02-15 23:02:26,607 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 775 transitions. [2023-02-15 23:02:26,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 521 [2023-02-15 23:02:26,611 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:26,611 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:26,623 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-02-15 23:02:26,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:26,817 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:02:26,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:26,817 INFO L85 PathProgramCache]: Analyzing trace with hash -858726579, now seen corresponding path program 14 times [2023-02-15 23:02:26,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:26,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737750030] [2023-02-15 23:02:26,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:26,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:27,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:02:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:28,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:28,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:28,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:29,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:29,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:29,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:29,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:29,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:29,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:29,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:29,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:29,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:29,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:30,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:30,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:30,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:30,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 24129 backedges. 11824 proven. 6875 refuted. 0 times theorem prover too weak. 5430 trivial. 0 not checked. [2023-02-15 23:02:30,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:30,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737750030] [2023-02-15 23:02:30,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737750030] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:02:30,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [319776278] [2023-02-15 23:02:30,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:02:30,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:30,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:30,391 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:02:30,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-15 23:02:30,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:02:30,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:30,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 59 conjunts are in the unsatisfiable core [2023-02-15 23:02:30,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:31,044 INFO L134 CoverageAnalysis]: Checked inductivity of 24129 backedges. 11843 proven. 6842 refuted. 0 times theorem prover too weak. 5444 trivial. 0 not checked. [2023-02-15 23:02:31,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:39,633 INFO L134 CoverageAnalysis]: Checked inductivity of 24129 backedges. 11843 proven. 6842 refuted. 0 times theorem prover too weak. 5444 trivial. 0 not checked. [2023-02-15 23:02:39,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [319776278] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:39,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:02:39,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 59, 59] total 64 [2023-02-15 23:02:39,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729576305] [2023-02-15 23:02:39,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:39,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-02-15 23:02:39,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:39,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-02-15 23:02:39,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=3585, Unknown=0, NotChecked=0, Total=4032 [2023-02-15 23:02:39,635 INFO L87 Difference]: Start difference. First operand 714 states and 775 transitions. Second operand has 64 states, 64 states have (on average 2.296875) internal successors, (147), 52 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) [2023-02-15 23:02:41,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:41,532 INFO L93 Difference]: Finished difference Result 1232 states and 1341 transitions. [2023-02-15 23:02:41,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2023-02-15 23:02:41,533 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.296875) internal successors, (147), 52 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) Word has length 520 [2023-02-15 23:02:41,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:41,553 INFO L225 Difference]: With dead ends: 1232 [2023-02-15 23:02:41,553 INFO L226 Difference]: Without dead ends: 595 [2023-02-15 23:02:41,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1310 GetRequests, 1022 SyntacticMatches, 56 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27399 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=9313, Invalid=45209, Unknown=0, NotChecked=0, Total=54522 [2023-02-15 23:02:41,577 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 566 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:41,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 142 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 23:02:41,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-02-15 23:02:41,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2023-02-15 23:02:41,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 576 states have (on average 1.0729166666666667) internal successors, (618), 576 states have internal predecessors, (618), 3 states have call successors, (3), 2 states have call predecessors, (3), 15 states have return successors, (16), 16 states have call predecessors, (16), 2 states have call successors, (16) [2023-02-15 23:02:41,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 637 transitions. [2023-02-15 23:02:41,634 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 637 transitions. Word has length 520 [2023-02-15 23:02:41,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:41,635 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 637 transitions. [2023-02-15 23:02:41,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.296875) internal successors, (147), 52 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) [2023-02-15 23:02:41,635 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 637 transitions. [2023-02-15 23:02:41,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-02-15 23:02:41,638 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:41,639 INFO L195 NwaCegarLoop]: trace histogram [130, 130, 130, 18, 17, 17, 17, 17, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:41,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:41,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-02-15 23:02:41,846 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:02:41,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:41,847 INFO L85 PathProgramCache]: Analyzing trace with hash 853447430, now seen corresponding path program 15 times [2023-02-15 23:02:41,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:41,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937882244] [2023-02-15 23:02:41,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:41,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:41,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:42,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 23:02:42,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:43,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:44,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:44,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:44,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:44,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:45,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:45,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:45,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:45,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:45,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:45,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:45,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:45,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:45,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:45,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:45,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:45,990 INFO L134 CoverageAnalysis]: Checked inductivity of 28449 backedges. 18654 proven. 2089 refuted. 0 times theorem prover too weak. 7706 trivial. 0 not checked. [2023-02-15 23:02:45,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:45,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937882244] [2023-02-15 23:02:45,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937882244] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:02:45,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613773145] [2023-02-15 23:02:45,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 23:02:45,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:45,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:45,992 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:02:45,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-15 23:02:46,492 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2023-02-15 23:02:46,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:46,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-15 23:02:46,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:47,466 INFO L134 CoverageAnalysis]: Checked inductivity of 28449 backedges. 13660 proven. 6376 refuted. 0 times theorem prover too weak. 8413 trivial. 0 not checked. [2023-02-15 23:02:47,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:50,324 INFO L134 CoverageAnalysis]: Checked inductivity of 28449 backedges. 13660 proven. 6376 refuted. 0 times theorem prover too weak. 8413 trivial. 0 not checked. [2023-02-15 23:02:50,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613773145] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:50,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:02:50,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 32, 32] total 121 [2023-02-15 23:02:50,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078372277] [2023-02-15 23:02:50,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:50,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2023-02-15 23:02:50,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:50,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2023-02-15 23:02:50,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1240, Invalid=13280, Unknown=0, NotChecked=0, Total=14520 [2023-02-15 23:02:50,327 INFO L87 Difference]: Start difference. First operand 595 states and 637 transitions. Second operand has 121 states, 121 states have (on average 2.15702479338843) internal successors, (261), 103 states have internal predecessors, (261), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) [2023-02-15 23:03:08,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:03:08,959 INFO L93 Difference]: Finished difference Result 1780 states and 1982 transitions. [2023-02-15 23:03:08,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 412 states. [2023-02-15 23:03:08,960 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 2.15702479338843) internal successors, (261), 103 states have internal predecessors, (261), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) Word has length 571 [2023-02-15 23:03:08,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:03:08,963 INFO L225 Difference]: With dead ends: 1780 [2023-02-15 23:03:08,963 INFO L226 Difference]: Without dead ends: 1176 [2023-02-15 23:03:08,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1641 GetRequests, 1113 SyntacticMatches, 0 SemanticMatches, 528 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101717 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=42875, Invalid=237495, Unknown=0, NotChecked=0, Total=280370 [2023-02-15 23:03:08,979 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1993 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 3119 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2012 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 3176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 3119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-15 23:03:08,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2012 Valid, 484 Invalid, 3176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 3119 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-15 23:03:08,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2023-02-15 23:03:09,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 766. [2023-02-15 23:03:09,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 744 states have (on average 1.0793010752688172) internal successors, (803), 744 states have internal predecessors, (803), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 19 states have call predecessors, (19), 2 states have call successors, (19) [2023-02-15 23:03:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 825 transitions. [2023-02-15 23:03:09,033 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 825 transitions. Word has length 571 [2023-02-15 23:03:09,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:03:09,034 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 825 transitions. [2023-02-15 23:03:09,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 2.15702479338843) internal successors, (261), 103 states have internal predecessors, (261), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) [2023-02-15 23:03:09,034 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 825 transitions. [2023-02-15 23:03:09,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2023-02-15 23:03:09,039 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:03:09,039 INFO L195 NwaCegarLoop]: trace histogram [182, 182, 182, 21, 20, 20, 20, 20, 18, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1] [2023-02-15 23:03:09,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-15 23:03:09,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:09,247 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:03:09,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:03:09,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1200037171, now seen corresponding path program 16 times [2023-02-15 23:03:09,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:03:09,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396467148] [2023-02-15 23:03:09,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:03:09,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:03:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:10,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 23:03:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:11,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:11,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:12,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:12,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:12,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:13,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:13,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:13,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:13,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:13,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:13,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:13,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:13,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:13,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:13,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:13,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:13,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:13,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:13,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:13,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:13,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 54597 backedges. 31822 proven. 593 refuted. 0 times theorem prover too weak. 22182 trivial. 0 not checked. [2023-02-15 23:03:13,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:03:13,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396467148] [2023-02-15 23:03:13,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396467148] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:03:13,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899453427] [2023-02-15 23:03:13,863 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 23:03:13,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:13,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:03:13,864 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:03:13,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-15 23:03:14,471 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 23:03:14,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:03:14,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 59 conjunts are in the unsatisfiable core [2023-02-15 23:03:14,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:03:15,128 INFO L134 CoverageAnalysis]: Checked inductivity of 54597 backedges. 33276 proven. 2628 refuted. 0 times theorem prover too weak. 18693 trivial. 0 not checked. [2023-02-15 23:03:15,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:03:24,702 INFO L134 CoverageAnalysis]: Checked inductivity of 54597 backedges. 33352 proven. 2552 refuted. 0 times theorem prover too weak. 18693 trivial. 0 not checked. [2023-02-15 23:03:24,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899453427] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:03:24,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:03:24,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 59, 59] total 80 [2023-02-15 23:03:24,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609975044] [2023-02-15 23:03:24,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:03:24,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-02-15 23:03:24,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:03:24,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-02-15 23:03:24,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=5755, Unknown=0, NotChecked=0, Total=6320 [2023-02-15 23:03:24,710 INFO L87 Difference]: Start difference. First operand 766 states and 825 transitions. Second operand has 80 states, 80 states have (on average 2.2625) internal successors, (181), 69 states have internal predecessors, (181), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-02-15 23:03:29,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:03:29,749 INFO L93 Difference]: Finished difference Result 1217 states and 1335 transitions. [2023-02-15 23:03:29,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2023-02-15 23:03:29,749 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.2625) internal successors, (181), 69 states have internal predecessors, (181), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) Word has length 760 [2023-02-15 23:03:29,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:03:29,752 INFO L225 Difference]: With dead ends: 1217 [2023-02-15 23:03:29,752 INFO L226 Difference]: Without dead ends: 772 [2023-02-15 23:03:29,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1783 GetRequests, 1474 SyntacticMatches, 56 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22012 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=9239, Invalid=55531, Unknown=0, NotChecked=0, Total=64770 [2023-02-15 23:03:29,759 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 126 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 4566 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 609 SdHoareTripleChecker+Invalid, 4577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:03:29,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 609 Invalid, 4577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 4566 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-15 23:03:29,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2023-02-15 23:03:29,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 772. [2023-02-15 23:03:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 750 states have (on average 1.0733333333333333) internal successors, (805), 750 states have internal predecessors, (805), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 19 states have call predecessors, (19), 2 states have call successors, (19) [2023-02-15 23:03:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 827 transitions. [2023-02-15 23:03:29,814 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 827 transitions. Word has length 760 [2023-02-15 23:03:29,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:03:29,815 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 827 transitions. [2023-02-15 23:03:29,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.2625) internal successors, (181), 69 states have internal predecessors, (181), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-02-15 23:03:29,815 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 827 transitions. [2023-02-15 23:03:29,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2023-02-15 23:03:29,820 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:03:29,820 INFO L195 NwaCegarLoop]: trace histogram [184, 184, 184, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1] [2023-02-15 23:03:29,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-02-15 23:03:30,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:30,028 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:03:30,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:03:30,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2091242813, now seen corresponding path program 17 times [2023-02-15 23:03:30,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:03:30,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158915830] [2023-02-15 23:03:30,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:03:30,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:03:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:31,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:03:31,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:32,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:32,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:33,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:33,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:35,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:35,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:35,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:36,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:36,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:36,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:36,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:37,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:37,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:37,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:37,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:37,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:37,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:37,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:37,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:37,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:37,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:37,823 INFO L134 CoverageAnalysis]: Checked inductivity of 55539 backedges. 36869 proven. 3418 refuted. 0 times theorem prover too weak. 15252 trivial. 0 not checked. [2023-02-15 23:03:37,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:03:37,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158915830] [2023-02-15 23:03:37,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158915830] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:03:37,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998705908] [2023-02-15 23:03:37,824 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 23:03:37,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:37,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:03:37,825 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:03:37,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-15 23:03:38,663 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2023-02-15 23:03:38,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:03:38,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 53 conjunts are in the unsatisfiable core [2023-02-15 23:03:38,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:03:39,189 INFO L134 CoverageAnalysis]: Checked inductivity of 55539 backedges. 32845 proven. 701 refuted. 0 times theorem prover too weak. 21993 trivial. 0 not checked. [2023-02-15 23:03:39,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:03:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 55539 backedges. 32879 proven. 667 refuted. 0 times theorem prover too weak. 21993 trivial. 0 not checked. [2023-02-15 23:03:41,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998705908] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:03:41,309 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:03:41,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 53, 53] total 115 [2023-02-15 23:03:41,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349147699] [2023-02-15 23:03:41,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:03:41,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2023-02-15 23:03:41,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:03:41,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2023-02-15 23:03:41,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1002, Invalid=12108, Unknown=0, NotChecked=0, Total=13110 [2023-02-15 23:03:41,312 INFO L87 Difference]: Start difference. First operand 772 states and 827 transitions. Second operand has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 101 states have internal predecessors, (237), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-02-15 23:03:54,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:03:54,051 INFO L93 Difference]: Finished difference Result 1181 states and 1289 transitions. [2023-02-15 23:03:54,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2023-02-15 23:03:54,052 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 101 states have internal predecessors, (237), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 756 [2023-02-15 23:03:54,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:03:54,054 INFO L225 Difference]: With dead ends: 1181 [2023-02-15 23:03:54,054 INFO L226 Difference]: Without dead ends: 775 [2023-02-15 23:03:54,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1850 GetRequests, 1478 SyntacticMatches, 28 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29122 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=15575, Invalid=103795, Unknown=0, NotChecked=0, Total=119370 [2023-02-15 23:03:54,063 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 199 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 9025 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 9044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 9025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-02-15 23:03:54,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 512 Invalid, 9044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 9025 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-02-15 23:03:54,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2023-02-15 23:03:54,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2023-02-15 23:03:54,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 753 states have (on average 1.0677290836653386) internal successors, (804), 753 states have internal predecessors, (804), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 19 states have call predecessors, (19), 2 states have call successors, (19) [2023-02-15 23:03:54,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 826 transitions. [2023-02-15 23:03:54,120 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 826 transitions. Word has length 756 [2023-02-15 23:03:54,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:03:54,120 INFO L495 AbstractCegarLoop]: Abstraction has 775 states and 826 transitions. [2023-02-15 23:03:54,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 101 states have internal predecessors, (237), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-02-15 23:03:54,121 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 826 transitions. [2023-02-15 23:03:54,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 760 [2023-02-15 23:03:54,126 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:03:54,126 INFO L195 NwaCegarLoop]: trace histogram [185, 185, 185, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1] [2023-02-15 23:03:54,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-15 23:03:54,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:54,336 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:03:54,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:03:54,336 INFO L85 PathProgramCache]: Analyzing trace with hash -882909326, now seen corresponding path program 18 times [2023-02-15 23:03:54,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:03:54,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038489998] [2023-02-15 23:03:54,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:03:54,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:03:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:55,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:03:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:57,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:57,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:58,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:59,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:00,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:00,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:00,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:00,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:00,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:01,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:01,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:01,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:01,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:01,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:02,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:02,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:02,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:02,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:02,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:02,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:02,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 56109 backedges. 27312 proven. 17087 refuted. 0 times theorem prover too weak. 11710 trivial. 0 not checked. [2023-02-15 23:04:02,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:04:02,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038489998] [2023-02-15 23:04:02,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038489998] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:04:02,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890142475] [2023-02-15 23:04:02,581 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 23:04:02,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:04:02,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:04:02,582 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:04:02,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-15 23:04:03,365 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2023-02-15 23:04:03,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:04:03,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-15 23:04:03,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:04:04,685 INFO L134 CoverageAnalysis]: Checked inductivity of 56109 backedges. 18240 proven. 30454 refuted. 0 times theorem prover too weak. 7415 trivial. 0 not checked. [2023-02-15 23:04:04,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:04:13,125 INFO L134 CoverageAnalysis]: Checked inductivity of 56109 backedges. 18240 proven. 30454 refuted. 0 times theorem prover too weak. 7415 trivial. 0 not checked. [2023-02-15 23:04:13,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890142475] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:04:13,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:04:13,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 45, 45] total 149 [2023-02-15 23:04:13,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354889096] [2023-02-15 23:04:13,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:04:13,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 149 states [2023-02-15 23:04:13,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:04:13,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 149 interpolants. [2023-02-15 23:04:13,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2196, Invalid=19856, Unknown=0, NotChecked=0, Total=22052 [2023-02-15 23:04:13,145 INFO L87 Difference]: Start difference. First operand 775 states and 826 transitions. Second operand has 149 states, 149 states have (on average 2.2550335570469797) internal successors, (336), 123 states have internal predecessors, (336), 1 states have call successors, (2), 1 states have call predecessors, (2), 28 states have return successors, (28), 28 states have call predecessors, (28), 1 states have call successors, (28) [2023-02-15 23:04:43,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:04:43,102 INFO L93 Difference]: Finished difference Result 4943 states and 5492 transitions. [2023-02-15 23:04:43,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 695 states. [2023-02-15 23:04:43,102 INFO L78 Accepts]: Start accepts. Automaton has has 149 states, 149 states have (on average 2.2550335570469797) internal successors, (336), 123 states have internal predecessors, (336), 1 states have call successors, (2), 1 states have call predecessors, (2), 28 states have return successors, (28), 28 states have call predecessors, (28), 1 states have call successors, (28) Word has length 759 [2023-02-15 23:04:43,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:04:43,110 INFO L225 Difference]: With dead ends: 4943 [2023-02-15 23:04:43,111 INFO L226 Difference]: Without dead ends: 3713 [2023-02-15 23:04:43,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2323 GetRequests, 1484 SyntacticMatches, 0 SemanticMatches, 839 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354890 ImplicationChecksByTransitivity, 31.3s TimeCoverageRelationStatistics Valid=143773, Invalid=562667, Unknown=0, NotChecked=0, Total=706440 [2023-02-15 23:04:43,140 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4131 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4159 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 1174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 23:04:43,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4159 Valid, 215 Invalid, 1174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 23:04:43,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2023-02-15 23:04:43,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 1273. [2023-02-15 23:04:43,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1273 states, 1242 states have (on average 1.07085346215781) internal successors, (1330), 1242 states have internal predecessors, (1330), 3 states have call successors, (3), 2 states have call predecessors, (3), 27 states have return successors, (28), 28 states have call predecessors, (28), 2 states have call successors, (28) [2023-02-15 23:04:43,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1361 transitions. [2023-02-15 23:04:43,275 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1361 transitions. Word has length 759 [2023-02-15 23:04:43,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:04:43,276 INFO L495 AbstractCegarLoop]: Abstraction has 1273 states and 1361 transitions. [2023-02-15 23:04:43,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 149 states, 149 states have (on average 2.2550335570469797) internal successors, (336), 123 states have internal predecessors, (336), 1 states have call successors, (2), 1 states have call predecessors, (2), 28 states have return successors, (28), 28 states have call predecessors, (28), 1 states have call successors, (28) [2023-02-15 23:04:43,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1361 transitions. [2023-02-15 23:04:43,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1310 [2023-02-15 23:04:43,288 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:04:43,288 INFO L195 NwaCegarLoop]: trace histogram [332, 332, 332, 30, 29, 29, 29, 29, 27, 27, 27, 27, 27, 26, 1, 1, 1, 1, 1, 1] [2023-02-15 23:04:43,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-15 23:04:43,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-02-15 23:04:43,500 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:04:43,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:04:43,504 INFO L85 PathProgramCache]: Analyzing trace with hash -951219818, now seen corresponding path program 19 times [2023-02-15 23:04:43,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:04:43,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843369391] [2023-02-15 23:04:43,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:04:43,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:04:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:46,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 23:04:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:48,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:51,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:51,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:53,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:55,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:56,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:56,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:58,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:59,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:01,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:02,919 INFO L134 CoverageAnalysis]: Checked inductivity of 177996 backedges. 96859 proven. 818 refuted. 0 times theorem prover too weak. 80319 trivial. 0 not checked. [2023-02-15 23:05:02,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:05:02,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843369391] [2023-02-15 23:05:02,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843369391] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:05:02,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631945427] [2023-02-15 23:05:02,920 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 23:05:02,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:05:02,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:05:02,921 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:05:02,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-15 23:05:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:03,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 2977 conjuncts, 69 conjunts are in the unsatisfiable core [2023-02-15 23:05:03,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:05:05,145 INFO L134 CoverageAnalysis]: Checked inductivity of 177996 backedges. 89761 proven. 4172 refuted. 0 times theorem prover too weak. 84063 trivial. 0 not checked. [2023-02-15 23:05:05,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:05:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 177996 backedges. 89864 proven. 4069 refuted. 0 times theorem prover too weak. 84063 trivial. 0 not checked. [2023-02-15 23:05:30,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631945427] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:05:30,273 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:05:30,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 69, 69] total 94 [2023-02-15 23:05:30,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019806224] [2023-02-15 23:05:30,274 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:05:30,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2023-02-15 23:05:30,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:05:30,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2023-02-15 23:05:30,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=758, Invalid=7984, Unknown=0, NotChecked=0, Total=8742 [2023-02-15 23:05:30,277 INFO L87 Difference]: Start difference. First operand 1273 states and 1361 transitions. Second operand has 94 states, 94 states have (on average 2.223404255319149) internal successors, (209), 81 states have internal predecessors, (209), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2023-02-15 23:05:37,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:05:37,249 INFO L93 Difference]: Finished difference Result 2138 states and 2315 transitions. [2023-02-15 23:05:37,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2023-02-15 23:05:37,249 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 94 states have (on average 2.223404255319149) internal successors, (209), 81 states have internal predecessors, (209), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) Word has length 1309 [2023-02-15 23:05:37,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:05:37,253 INFO L225 Difference]: With dead ends: 2138 [2023-02-15 23:05:37,253 INFO L226 Difference]: Without dead ends: 1282 [2023-02-15 23:05:37,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2970 GetRequests, 2579 SyntacticMatches, 66 SemanticMatches, 325 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36519 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=14936, Invalid=91666, Unknown=0, NotChecked=0, Total=106602 [2023-02-15 23:05:37,267 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 136 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 6805 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 6819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 6805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-02-15 23:05:37,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 597 Invalid, 6819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 6805 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-02-15 23:05:37,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2023-02-15 23:05:37,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1282. [2023-02-15 23:05:37,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 1251 states have (on average 1.0623501199040768) internal successors, (1329), 1251 states have internal predecessors, (1329), 3 states have call successors, (3), 2 states have call predecessors, (3), 27 states have return successors, (28), 28 states have call predecessors, (28), 2 states have call successors, (28) [2023-02-15 23:05:37,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1360 transitions. [2023-02-15 23:05:37,399 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1360 transitions. Word has length 1309 [2023-02-15 23:05:37,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:05:37,401 INFO L495 AbstractCegarLoop]: Abstraction has 1282 states and 1360 transitions. [2023-02-15 23:05:37,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 94 states have (on average 2.223404255319149) internal successors, (209), 81 states have internal predecessors, (209), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2023-02-15 23:05:37,401 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1360 transitions. [2023-02-15 23:05:37,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1322 [2023-02-15 23:05:37,413 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:05:37,414 INFO L195 NwaCegarLoop]: trace histogram [336, 336, 336, 30, 29, 29, 29, 29, 27, 27, 27, 27, 27, 26, 1, 1, 1, 1, 1, 1] [2023-02-15 23:05:37,443 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-02-15 23:05:37,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-02-15 23:05:37,644 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:05:37,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:05:37,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1194131830, now seen corresponding path program 20 times [2023-02-15 23:05:37,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:05:37,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100171516] [2023-02-15 23:05:37,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:05:37,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:05:38,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:40,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 23:05:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:42,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:45,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:45,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:47,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:49,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat