./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a31fd051 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted/NestedRecursion_1b.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 9948dbd77aeb2de72e0bd3a3a4e22b1606b19383e4631af58adbec46ed909b6c --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 13:51:59,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 13:51:59,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 13:51:59,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 13:51:59,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 13:51:59,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 13:51:59,695 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 13:51:59,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 13:51:59,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 13:51:59,698 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 13:51:59,699 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 13:51:59,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 13:51:59,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 13:51:59,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 13:51:59,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 13:51:59,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 13:51:59,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 13:51:59,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 13:51:59,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 13:51:59,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 13:51:59,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 13:51:59,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 13:51:59,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 13:51:59,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 13:51:59,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 13:51:59,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 13:51:59,719 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 13:51:59,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 13:51:59,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 13:51:59,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 13:51:59,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 13:51:59,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 13:51:59,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 13:51:59,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 13:51:59,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 13:51:59,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 13:51:59,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 13:51:59,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 13:51:59,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 13:51:59,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 13:51:59,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 13:51:59,729 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-15 13:51:59,753 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 13:51:59,753 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 13:51:59,754 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 13:51:59,754 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 13:51:59,755 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 13:51:59,755 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 13:51:59,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 13:51:59,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 13:51:59,756 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 13:51:59,756 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 13:51:59,757 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 13:51:59,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 13:51:59,757 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 13:51:59,757 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 13:51:59,757 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 13:51:59,757 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 13:51:59,757 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-15 13:51:59,758 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 13:51:59,758 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 13:51:59,758 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 13:51:59,758 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 13:51:59,758 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 13:51:59,758 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 13:51:59,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:51:59,759 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 13:51:59,759 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 13:51:59,759 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 13:51:59,759 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 13:51:59,759 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 13:51:59,759 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 13:51:59,760 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 13:51:59,760 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 13:51:59,760 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 13:51:59,760 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 13:51:59,760 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9948dbd77aeb2de72e0bd3a3a4e22b1606b19383e4631af58adbec46ed909b6c [2023-02-15 13:51:59,959 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 13:51:59,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 13:51:59,981 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 13:51:59,982 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 13:51:59,982 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 13:51:59,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2023-02-15 13:52:00,903 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 13:52:01,023 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 13:52:01,024 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2023-02-15 13:52:01,028 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ba5f54f9/9df7627f757f445288017e77d05d1139/FLAG77c73fbbf [2023-02-15 13:52:01,041 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ba5f54f9/9df7627f757f445288017e77d05d1139 [2023-02-15 13:52:01,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 13:52:01,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 13:52:01,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 13:52:01,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 13:52:01,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 13:52:01,049 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:52:01" (1/1) ... [2023-02-15 13:52:01,051 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af64c75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:01, skipping insertion in model container [2023-02-15 13:52:01,051 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:52:01" (1/1) ... [2023-02-15 13:52:01,056 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 13:52:01,065 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:52:01,205 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:52:01,210 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 13:52:01,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:52:01,231 INFO L208 MainTranslator]: Completed translation [2023-02-15 13:52:01,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:01 WrapperNode [2023-02-15 13:52:01,232 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 13:52:01,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 13:52:01,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 13:52:01,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 13:52:01,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:01" (1/1) ... [2023-02-15 13:52:01,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:01" (1/1) ... [2023-02-15 13:52:01,250 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8 [2023-02-15 13:52:01,250 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 13:52:01,252 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 13:52:01,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 13:52:01,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 13:52:01,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:01" (1/1) ... [2023-02-15 13:52:01,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:01" (1/1) ... [2023-02-15 13:52:01,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:01" (1/1) ... [2023-02-15 13:52:01,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:01" (1/1) ... [2023-02-15 13:52:01,261 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:01" (1/1) ... [2023-02-15 13:52:01,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:01" (1/1) ... [2023-02-15 13:52:01,264 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:01" (1/1) ... [2023-02-15 13:52:01,265 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:01" (1/1) ... [2023-02-15 13:52:01,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 13:52:01,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 13:52:01,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 13:52:01,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 13:52:01,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:01" (1/1) ... [2023-02-15 13:52:01,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:52:01,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:01,292 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 13:52:01,313 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 13:52:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2023-02-15 13:52:01,325 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2023-02-15 13:52:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2023-02-15 13:52:01,325 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2023-02-15 13:52:01,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 13:52:01,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 13:52:01,361 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 13:52:01,362 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 13:52:01,470 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 13:52:01,475 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 13:52:01,475 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-15 13:52:01,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:52:01 BoogieIcfgContainer [2023-02-15 13:52:01,477 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 13:52:01,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 13:52:01,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 13:52:01,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 13:52:01,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:52:01" (1/3) ... [2023-02-15 13:52:01,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3897d6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:52:01, skipping insertion in model container [2023-02-15 13:52:01,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:01" (2/3) ... [2023-02-15 13:52:01,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3897d6d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:52:01, skipping insertion in model container [2023-02-15 13:52:01,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:52:01" (3/3) ... [2023-02-15 13:52:01,482 INFO L112 eAbstractionObserver]: Analyzing ICFG NestedRecursion_1b.c [2023-02-15 13:52:01,492 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 13:52:01,493 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-02-15 13:52:01,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 13:52:01,534 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;@7c1b7d9c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 13:52:01,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-02-15 13:52:01,537 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 36 states have internal predecessors, (38), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-15 13:52:01,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-15 13:52:01,546 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:01,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-15 13:52:01,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:01,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:01,549 INFO L85 PathProgramCache]: Analyzing trace with hash 2132374368, now seen corresponding path program 1 times [2023-02-15 13:52:01,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:01,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947247720] [2023-02-15 13:52:01,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:01,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:01,672 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 13:52:01,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:01,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947247720] [2023-02-15 13:52:01,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947247720] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:01,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:01,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:52:01,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824144712] [2023-02-15 13:52:01,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:01,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:52:01,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:01,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:52:01,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:52:01,706 INFO L87 Difference]: Start difference. First operand has 45 states, 26 states have (on average 1.4615384615384615) internal successors, (38), 36 states have internal predecessors, (38), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:01,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:01,761 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2023-02-15 13:52:01,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:52:01,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-15 13:52:01,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:01,769 INFO L225 Difference]: With dead ends: 47 [2023-02-15 13:52:01,771 INFO L226 Difference]: Without dead ends: 42 [2023-02-15 13:52:01,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:52:01,783 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 10 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:01,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 84 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:01,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-15 13:52:01,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2023-02-15 13:52:01,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 32 states have internal predecessors, (34), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 13:52:01,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2023-02-15 13:52:01,821 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 6 [2023-02-15 13:52:01,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:01,821 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2023-02-15 13:52:01,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:01,822 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2023-02-15 13:52:01,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 13:52:01,822 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:01,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:01,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 13:52:01,823 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:01,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:01,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1679096030, now seen corresponding path program 1 times [2023-02-15 13:52:01,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:01,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680957948] [2023-02-15 13:52:01,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:01,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:01,859 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 13:52:01,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:01,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680957948] [2023-02-15 13:52:01,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680957948] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:01,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:01,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 13:52:01,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739822464] [2023-02-15 13:52:01,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:01,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:52:01,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:01,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:52:01,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:52:01,867 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:01,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:01,950 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2023-02-15 13:52:01,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 13:52:01,956 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 13:52:01,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:01,957 INFO L225 Difference]: With dead ends: 57 [2023-02-15 13:52:01,957 INFO L226 Difference]: Without dead ends: 54 [2023-02-15 13:52:01,958 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 13:52:01,959 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 22 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:01,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 157 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:01,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-15 13:52:01,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2023-02-15 13:52:01,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 39 states have internal predecessors, (43), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-15 13:52:01,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2023-02-15 13:52:01,967 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 7 [2023-02-15 13:52:01,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:01,967 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2023-02-15 13:52:01,967 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 13:52:01,967 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-02-15 13:52:01,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-15 13:52:01,968 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:01,968 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:01,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 13:52:01,968 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:01,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:01,969 INFO L85 PathProgramCache]: Analyzing trace with hash -315038040, now seen corresponding path program 1 times [2023-02-15 13:52:01,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:01,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082076479] [2023-02-15 13:52:01,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:01,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,018 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 13:52:02,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:02,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082076479] [2023-02-15 13:52:02,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082076479] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:02,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:02,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:52:02,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570710781] [2023-02-15 13:52:02,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:02,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:52:02,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:02,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:52:02,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:52:02,020 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:02,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:02,038 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2023-02-15 13:52:02,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:52:02,040 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-15 13:52:02,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:02,041 INFO L225 Difference]: With dead ends: 52 [2023-02-15 13:52:02,041 INFO L226 Difference]: Without dead ends: 51 [2023-02-15 13:52:02,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:52:02,042 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 15 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:02,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 69 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:02,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-15 13:52:02,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2023-02-15 13:52:02,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 31 states have (on average 1.3548387096774193) internal successors, (42), 38 states have internal predecessors, (42), 8 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-15 13:52:02,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2023-02-15 13:52:02,054 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 11 [2023-02-15 13:52:02,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:02,054 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2023-02-15 13:52:02,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:02,055 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2023-02-15 13:52:02,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 13:52:02,055 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:02,055 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:02,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-15 13:52:02,055 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:02,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:02,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1176244610, now seen corresponding path program 1 times [2023-02-15 13:52:02,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:02,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237252171] [2023-02-15 13:52:02,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:02,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:02,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,124 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 13:52:02,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:02,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237252171] [2023-02-15 13:52:02,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237252171] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:02,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:02,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 13:52:02,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927429617] [2023-02-15 13:52:02,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:02,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 13:52:02,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:02,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 13:52:02,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 13:52:02,126 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:02,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:02,233 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2023-02-15 13:52:02,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 13:52:02,234 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 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 13:52:02,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:02,237 INFO L225 Difference]: With dead ends: 76 [2023-02-15 13:52:02,237 INFO L226 Difference]: Without dead ends: 75 [2023-02-15 13:52:02,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-15 13:52:02,241 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 47 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:02,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 189 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:52:02,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-02-15 13:52:02,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2023-02-15 13:52:02,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 43 states have (on average 1.372093023255814) internal successors, (59), 50 states have internal predecessors, (59), 11 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-15 13:52:02,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2023-02-15 13:52:02,251 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 12 [2023-02-15 13:52:02,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:02,252 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2023-02-15 13:52:02,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:02,252 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2023-02-15 13:52:02,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 13:52:02,253 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:02,253 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:02,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 13:52:02,253 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:02,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:02,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2079532187, now seen corresponding path program 1 times [2023-02-15 13:52:02,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:02,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350363274] [2023-02-15 13:52:02,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:02,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:02,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-15 13:52:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,315 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:52:02,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:02,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350363274] [2023-02-15 13:52:02,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350363274] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:02,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:02,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 13:52:02,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892597853] [2023-02-15 13:52:02,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:02,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 13:52:02,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:02,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 13:52:02,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 13:52:02,327 INFO L87 Difference]: Start difference. First operand 65 states and 80 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 13:52:02,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:02,390 INFO L93 Difference]: Finished difference Result 126 states and 161 transitions. [2023-02-15 13:52:02,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 13:52:02,391 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2023-02-15 13:52:02,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:02,392 INFO L225 Difference]: With dead ends: 126 [2023-02-15 13:52:02,393 INFO L226 Difference]: Without dead ends: 87 [2023-02-15 13:52:02,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-15 13:52:02,395 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 10 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:02,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 192 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-15 13:52:02,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2023-02-15 13:52:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 50 states have (on average 1.32) internal successors, (66), 59 states have internal predecessors, (66), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (20), 12 states have call predecessors, (20), 12 states have call successors, (20) [2023-02-15 13:52:02,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2023-02-15 13:52:02,407 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 18 [2023-02-15 13:52:02,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:02,408 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2023-02-15 13:52:02,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 13:52:02,408 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2023-02-15 13:52:02,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-15 13:52:02,409 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:02,409 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:02,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 13:52:02,409 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:02,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:02,410 INFO L85 PathProgramCache]: Analyzing trace with hash 643212051, now seen corresponding path program 1 times [2023-02-15 13:52:02,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:02,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877194770] [2023-02-15 13:52:02,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:02,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,450 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 13:52:02,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:02,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877194770] [2023-02-15 13:52:02,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877194770] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:02,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:02,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 13:52:02,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698910995] [2023-02-15 13:52:02,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:02,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 13:52:02,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:02,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 13:52:02,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:52:02,453 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 13:52:02,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:02,481 INFO L93 Difference]: Finished difference Result 98 states and 133 transitions. [2023-02-15 13:52:02,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 13:52:02,481 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-02-15 13:52:02,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:02,483 INFO L225 Difference]: With dead ends: 98 [2023-02-15 13:52:02,484 INFO L226 Difference]: Without dead ends: 97 [2023-02-15 13:52:02,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:52:02,485 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 8 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:02,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 112 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:02,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-15 13:52:02,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 81. [2023-02-15 13:52:02,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 54 states have (on average 1.2962962962962963) internal successors, (70), 61 states have internal predecessors, (70), 13 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (20), 14 states have call predecessors, (20), 12 states have call successors, (20) [2023-02-15 13:52:02,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 103 transitions. [2023-02-15 13:52:02,501 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 103 transitions. Word has length 19 [2023-02-15 13:52:02,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:02,502 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 103 transitions. [2023-02-15 13:52:02,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 13:52:02,502 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 103 transitions. [2023-02-15 13:52:02,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 13:52:02,502 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:02,503 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:02,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 13:52:02,503 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:02,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:02,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1270071308, now seen corresponding path program 1 times [2023-02-15 13:52:02,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:02,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268228875] [2023-02-15 13:52:02,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:02,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-15 13:52:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-15 13:52:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,545 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 13:52:02,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:02,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268228875] [2023-02-15 13:52:02,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268228875] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:02,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:02,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 13:52:02,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783942967] [2023-02-15 13:52:02,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:02,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 13:52:02,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:02,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 13:52:02,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:52:02,547 INFO L87 Difference]: Start difference. First operand 81 states and 103 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 13:52:02,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:02,563 INFO L93 Difference]: Finished difference Result 90 states and 115 transitions. [2023-02-15 13:52:02,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 13:52:02,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-02-15 13:52:02,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:02,564 INFO L225 Difference]: With dead ends: 90 [2023-02-15 13:52:02,564 INFO L226 Difference]: Without dead ends: 89 [2023-02-15 13:52:02,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:52:02,565 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 2 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:02,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 117 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:02,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-15 13:52:02,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2023-02-15 13:52:02,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 59 states have (on average 1.271186440677966) internal successors, (75), 65 states have internal predecessors, (75), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (22), 16 states have call predecessors, (22), 12 states have call successors, (22) [2023-02-15 13:52:02,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 110 transitions. [2023-02-15 13:52:02,579 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 110 transitions. Word has length 20 [2023-02-15 13:52:02,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:02,579 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 110 transitions. [2023-02-15 13:52:02,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 13:52:02,579 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 110 transitions. [2023-02-15 13:52:02,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 13:52:02,579 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:02,579 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:02,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 13:52:02,580 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:02,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:02,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1535262855, now seen corresponding path program 1 times [2023-02-15 13:52:02,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:02,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618302741] [2023-02-15 13:52:02,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:02,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,601 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 13:52:02,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:02,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618302741] [2023-02-15 13:52:02,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618302741] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:02,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:02,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:52:02,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759893656] [2023-02-15 13:52:02,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:02,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:52:02,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:02,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:52:02,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:52:02,602 INFO L87 Difference]: Start difference. First operand 87 states and 110 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 13:52:02,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:02,609 INFO L93 Difference]: Finished difference Result 87 states and 110 transitions. [2023-02-15 13:52:02,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:52:02,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-02-15 13:52:02,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:02,610 INFO L225 Difference]: With dead ends: 87 [2023-02-15 13:52:02,610 INFO L226 Difference]: Without dead ends: 86 [2023-02-15 13:52:02,610 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 13:52:02,611 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:02,611 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 70 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:02,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-15 13:52:02,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-02-15 13:52:02,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 59 states have (on average 1.2372881355932204) internal successors, (73), 64 states have internal predecessors, (73), 13 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (22), 16 states have call predecessors, (22), 12 states have call successors, (22) [2023-02-15 13:52:02,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2023-02-15 13:52:02,617 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 20 [2023-02-15 13:52:02,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:02,617 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2023-02-15 13:52:02,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 13:52:02,617 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2023-02-15 13:52:02,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 13:52:02,617 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:02,617 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:02,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-15 13:52:02,618 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:02,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:02,618 INFO L85 PathProgramCache]: Analyzing trace with hash 717504954, now seen corresponding path program 1 times [2023-02-15 13:52:02,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:02,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200549176] [2023-02-15 13:52:02,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:02,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:02,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-15 13:52:02,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-15 13:52:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,636 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 13:52:02,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:02,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200549176] [2023-02-15 13:52:02,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200549176] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:02,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:02,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:52:02,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091406613] [2023-02-15 13:52:02,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:02,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:52:02,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:02,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:52:02,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:52:02,638 INFO L87 Difference]: Start difference. First operand 86 states and 108 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 13:52:02,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:02,642 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2023-02-15 13:52:02,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:52:02,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2023-02-15 13:52:02,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:02,643 INFO L225 Difference]: With dead ends: 86 [2023-02-15 13:52:02,643 INFO L226 Difference]: Without dead ends: 80 [2023-02-15 13:52:02,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 13:52:02,644 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 1 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 77 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 13:52:02,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 77 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:02,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-15 13:52:02,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-02-15 13:52:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 60 states have internal predecessors, (67), 12 states have call successors, (12), 5 states have call predecessors, (12), 7 states have return successors, (19), 14 states have call predecessors, (19), 11 states have call successors, (19) [2023-02-15 13:52:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2023-02-15 13:52:02,649 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 21 [2023-02-15 13:52:02,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:02,649 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2023-02-15 13:52:02,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 13:52:02,649 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2023-02-15 13:52:02,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 13:52:02,650 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:02,650 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:02,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-15 13:52:02,650 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:02,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:02,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1649259199, now seen corresponding path program 1 times [2023-02-15 13:52:02,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:02,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165636928] [2023-02-15 13:52:02,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:02,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:02,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 13:52:02,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:02,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165636928] [2023-02-15 13:52:02,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165636928] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:02,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:02,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 13:52:02,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570842481] [2023-02-15 13:52:02,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:02,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 13:52:02,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:02,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 13:52:02,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 13:52:02,698 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 13:52:02,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:02,749 INFO L93 Difference]: Finished difference Result 163 states and 218 transitions. [2023-02-15 13:52:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 13:52:02,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-02-15 13:52:02,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:02,750 INFO L225 Difference]: With dead ends: 163 [2023-02-15 13:52:02,750 INFO L226 Difference]: Without dead ends: 100 [2023-02-15 13:52:02,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-15 13:52:02,752 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 10 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:02,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 182 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-15 13:52:02,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 88. [2023-02-15 13:52:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 60 states have (on average 1.2) internal successors, (72), 67 states have internal predecessors, (72), 14 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (21), 14 states have call predecessors, (21), 13 states have call successors, (21) [2023-02-15 13:52:02,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2023-02-15 13:52:02,768 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 25 [2023-02-15 13:52:02,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:02,768 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2023-02-15 13:52:02,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 13:52:02,769 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2023-02-15 13:52:02,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 13:52:02,769 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:02,769 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:02,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-15 13:52:02,769 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:02,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:02,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1854006348, now seen corresponding path program 1 times [2023-02-15 13:52:02,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:02,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985670665] [2023-02-15 13:52:02,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:02,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:02,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-15 13:52:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-15 13:52:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,828 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-15 13:52:02,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:02,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985670665] [2023-02-15 13:52:02,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985670665] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:02,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:02,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 13:52:02,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301550850] [2023-02-15 13:52:02,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:02,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 13:52:02,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:02,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 13:52:02,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 13:52:02,833 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 13:52:02,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:02,891 INFO L93 Difference]: Finished difference Result 173 states and 223 transitions. [2023-02-15 13:52:02,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 13:52:02,891 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2023-02-15 13:52:02,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:02,894 INFO L225 Difference]: With dead ends: 173 [2023-02-15 13:52:02,894 INFO L226 Difference]: Without dead ends: 104 [2023-02-15 13:52:02,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-02-15 13:52:02,895 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 8 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:02,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 186 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:02,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-02-15 13:52:02,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2023-02-15 13:52:02,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 65 states have (on average 1.1846153846153846) internal successors, (77), 72 states have internal predecessors, (77), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (23), 16 states have call predecessors, (23), 15 states have call successors, (23) [2023-02-15 13:52:02,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2023-02-15 13:52:02,908 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 36 [2023-02-15 13:52:02,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:02,909 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2023-02-15 13:52:02,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 13:52:02,909 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2023-02-15 13:52:02,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-15 13:52:02,911 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:02,911 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:02,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-15 13:52:02,912 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:02,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:02,912 INFO L85 PathProgramCache]: Analyzing trace with hash -711697781, now seen corresponding path program 1 times [2023-02-15 13:52:02,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:02,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294143718] [2023-02-15 13:52:02,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:02,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-15 13:52:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-15 13:52:02,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-15 13:52:02,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:02,949 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-02-15 13:52:02,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:02,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294143718] [2023-02-15 13:52:02,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294143718] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:02,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:02,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:52:02,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826816720] [2023-02-15 13:52:02,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:02,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:52:02,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:02,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:52:02,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:52:02,952 INFO L87 Difference]: Start difference. First operand 96 states and 116 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 13:52:02,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:02,959 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2023-02-15 13:52:02,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:52:02,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2023-02-15 13:52:02,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:02,960 INFO L225 Difference]: With dead ends: 96 [2023-02-15 13:52:02,960 INFO L226 Difference]: Without dead ends: 95 [2023-02-15 13:52:02,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 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 13:52:02,961 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 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 13:52:02,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:02,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-02-15 13:52:02,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-02-15 13:52:02,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 65 states have (on average 1.1538461538461537) internal successors, (75), 71 states have internal predecessors, (75), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (23), 16 states have call predecessors, (23), 15 states have call successors, (23) [2023-02-15 13:52:02,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2023-02-15 13:52:02,972 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 38 [2023-02-15 13:52:02,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:02,973 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2023-02-15 13:52:02,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 13:52:02,973 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2023-02-15 13:52:02,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-15 13:52:02,976 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:02,977 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:02,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-15 13:52:02,977 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:02,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:02,978 INFO L85 PathProgramCache]: Analyzing trace with hash 750310703, now seen corresponding path program 1 times [2023-02-15 13:52:02,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:02,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672142642] [2023-02-15 13:52:02,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:02,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:02,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-02-15 13:52:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-15 13:52:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,032 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-15 13:52:03,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:03,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672142642] [2023-02-15 13:52:03,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672142642] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:03,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:03,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 13:52:03,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284047689] [2023-02-15 13:52:03,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:03,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 13:52:03,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:03,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 13:52:03,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:52:03,034 INFO L87 Difference]: Start difference. First operand 95 states and 114 transitions. Second operand has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 13:52:03,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:03,047 INFO L93 Difference]: Finished difference Result 102 states and 122 transitions. [2023-02-15 13:52:03,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 13:52:03,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 34 [2023-02-15 13:52:03,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:03,048 INFO L225 Difference]: With dead ends: 102 [2023-02-15 13:52:03,048 INFO L226 Difference]: Without dead ends: 101 [2023-02-15 13:52:03,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:52:03,049 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:03,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 111 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:03,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-15 13:52:03,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-02-15 13:52:03,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 71 states have (on average 1.1408450704225352) internal successors, (81), 75 states have internal predecessors, (81), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (23), 18 states have call predecessors, (23), 15 states have call successors, (23) [2023-02-15 13:52:03,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 120 transitions. [2023-02-15 13:52:03,053 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 120 transitions. Word has length 34 [2023-02-15 13:52:03,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:03,054 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 120 transitions. [2023-02-15 13:52:03,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.0) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 13:52:03,054 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 120 transitions. [2023-02-15 13:52:03,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 13:52:03,054 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:03,055 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:03,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-15 13:52:03,055 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:03,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:03,055 INFO L85 PathProgramCache]: Analyzing trace with hash 188454727, now seen corresponding path program 1 times [2023-02-15 13:52:03,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:03,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096086337] [2023-02-15 13:52:03,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:03,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:03,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:03,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 13:52:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,156 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-02-15 13:52:03,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:03,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096086337] [2023-02-15 13:52:03,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096086337] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:03,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:03,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 13:52:03,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591473265] [2023-02-15 13:52:03,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:03,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 13:52:03,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:03,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 13:52:03,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-15 13:52:03,157 INFO L87 Difference]: Start difference. First operand 101 states and 120 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 13:52:03,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:03,189 INFO L93 Difference]: Finished difference Result 111 states and 132 transitions. [2023-02-15 13:52:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 13:52:03,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2023-02-15 13:52:03,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:03,193 INFO L225 Difference]: With dead ends: 111 [2023-02-15 13:52:03,193 INFO L226 Difference]: Without dead ends: 110 [2023-02-15 13:52:03,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-02-15 13:52:03,193 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 7 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:03,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 152 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:03,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-02-15 13:52:03,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2023-02-15 13:52:03,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 74 states have internal predecessors, (79), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (23), 18 states have call predecessors, (23), 15 states have call successors, (23) [2023-02-15 13:52:03,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 118 transitions. [2023-02-15 13:52:03,201 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 118 transitions. Word has length 43 [2023-02-15 13:52:03,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:03,201 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 118 transitions. [2023-02-15 13:52:03,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 13:52:03,201 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 118 transitions. [2023-02-15 13:52:03,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-15 13:52:03,202 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:03,202 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:03,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-15 13:52:03,202 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:03,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:03,203 INFO L85 PathProgramCache]: Analyzing trace with hash 195579087, now seen corresponding path program 1 times [2023-02-15 13:52:03,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:03,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403125746] [2023-02-15 13:52:03,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:03,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:03,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-15 13:52:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 13:52:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,295 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-15 13:52:03,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:03,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403125746] [2023-02-15 13:52:03,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403125746] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:03,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446260010] [2023-02-15 13:52:03,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:03,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:03,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:03,299 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 13:52:03,299 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 13:52:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 13:52:03,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:03,390 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-15 13:52:03,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:52:03,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446260010] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:03,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 13:52:03,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-02-15 13:52:03,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194578213] [2023-02-15 13:52:03,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:03,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 13:52:03,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:03,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 13:52:03,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-02-15 13:52:03,394 INFO L87 Difference]: Start difference. First operand 100 states and 118 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 13:52:03,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:03,461 INFO L93 Difference]: Finished difference Result 101 states and 118 transitions. [2023-02-15 13:52:03,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 13:52:03,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2023-02-15 13:52:03,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:03,462 INFO L225 Difference]: With dead ends: 101 [2023-02-15 13:52:03,462 INFO L226 Difference]: Without dead ends: 100 [2023-02-15 13:52:03,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-02-15 13:52:03,462 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 23 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:03,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 156 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:03,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-15 13:52:03,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2023-02-15 13:52:03,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 71 states have (on average 1.0985915492957747) internal successors, (78), 73 states have internal predecessors, (78), 16 states have call successors, (16), 7 states have call predecessors, (16), 9 states have return successors, (23), 18 states have call predecessors, (23), 15 states have call successors, (23) [2023-02-15 13:52:03,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2023-02-15 13:52:03,466 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 42 [2023-02-15 13:52:03,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:03,467 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2023-02-15 13:52:03,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 13:52:03,467 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2023-02-15 13:52:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-02-15 13:52:03,467 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:03,467 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:03,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 13:52:03,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-15 13:52:03,677 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:03,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:03,677 INFO L85 PathProgramCache]: Analyzing trace with hash 725769945, now seen corresponding path program 1 times [2023-02-15 13:52:03,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:03,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854443896] [2023-02-15 13:52:03,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:03,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-15 13:52:03,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 13:52:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,741 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-02-15 13:52:03,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:03,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854443896] [2023-02-15 13:52:03,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854443896] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:03,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211291857] [2023-02-15 13:52:03,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:03,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:03,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:03,743 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 13:52:03,748 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 13:52:03,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:03,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 13:52:03,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-15 13:52:03,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:52:03,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211291857] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:03,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 13:52:03,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-02-15 13:52:03,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46084886] [2023-02-15 13:52:03,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:03,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 13:52:03,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:03,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 13:52:03,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-02-15 13:52:03,811 INFO L87 Difference]: Start difference. First operand 99 states and 117 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 13:52:03,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:03,896 INFO L93 Difference]: Finished difference Result 128 states and 153 transitions. [2023-02-15 13:52:03,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 13:52:03,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2023-02-15 13:52:03,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:03,897 INFO L225 Difference]: With dead ends: 128 [2023-02-15 13:52:03,897 INFO L226 Difference]: Without dead ends: 127 [2023-02-15 13:52:03,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-02-15 13:52:03,898 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 28 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:03,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 163 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:03,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-02-15 13:52:03,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2023-02-15 13:52:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 91 states have (on average 1.098901098901099) internal successors, (100), 93 states have internal predecessors, (100), 21 states have call successors, (21), 8 states have call predecessors, (21), 11 states have return successors, (31), 24 states have call predecessors, (31), 20 states have call successors, (31) [2023-02-15 13:52:03,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2023-02-15 13:52:03,906 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 54 [2023-02-15 13:52:03,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:03,906 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2023-02-15 13:52:03,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 13:52:03,906 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2023-02-15 13:52:03,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-15 13:52:03,907 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:03,907 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:03,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-15 13:52:04,113 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,SelfDestructingSolverStorable15 [2023-02-15 13:52:04,113 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:04,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:04,113 INFO L85 PathProgramCache]: Analyzing trace with hash 330066221, now seen corresponding path program 1 times [2023-02-15 13:52:04,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:04,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155007216] [2023-02-15 13:52:04,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:04,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:04,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-15 13:52:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:04,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:04,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:04,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 13:52:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:04,222 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-15 13:52:04,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:04,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155007216] [2023-02-15 13:52:04,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155007216] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:04,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1325199034] [2023-02-15 13:52:04,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:04,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:04,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:04,224 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 13:52:04,226 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 13:52:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:04,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-15 13:52:04,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:04,278 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-15 13:52:04,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:52:04,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1325199034] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:04,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 13:52:04,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2023-02-15 13:52:04,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850366307] [2023-02-15 13:52:04,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:04,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:52:04,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:04,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:52:04,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-02-15 13:52:04,280 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. Second operand has 5 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 13:52:04,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:04,317 INFO L93 Difference]: Finished difference Result 155 states and 188 transitions. [2023-02-15 13:52:04,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 13:52:04,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 47 [2023-02-15 13:52:04,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:04,319 INFO L225 Difference]: With dead ends: 155 [2023-02-15 13:52:04,319 INFO L226 Difference]: Without dead ends: 154 [2023-02-15 13:52:04,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-02-15 13:52:04,319 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 32 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:04,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 111 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:04,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-02-15 13:52:04,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2023-02-15 13:52:04,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 111 states have (on average 1.0990990990990992) internal successors, (122), 113 states have internal predecessors, (122), 26 states have call successors, (26), 9 states have call predecessors, (26), 13 states have return successors, (39), 30 states have call predecessors, (39), 25 states have call successors, (39) [2023-02-15 13:52:04,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 187 transitions. [2023-02-15 13:52:04,332 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 187 transitions. Word has length 47 [2023-02-15 13:52:04,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:04,332 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 187 transitions. [2023-02-15 13:52:04,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 13:52:04,333 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 187 transitions. [2023-02-15 13:52:04,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-15 13:52:04,333 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:04,333 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:04,339 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 13:52:04,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:04,543 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:04,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:04,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1425732833, now seen corresponding path program 1 times [2023-02-15 13:52:04,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:04,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453150396] [2023-02-15 13:52:04,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:04,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:04,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-15 13:52:04,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:04,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:04,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:04,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 13:52:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:04,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-15 13:52:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:04,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:04,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-15 13:52:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-15 13:52:04,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:04,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453150396] [2023-02-15 13:52:04,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453150396] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:04,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856751955] [2023-02-15 13:52:04,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:04,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:04,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:04,591 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 13:52:04,621 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 13:52:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:04,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 13:52:04,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:04,640 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-15 13:52:04,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:52:04,728 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-15 13:52:04,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856751955] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:52:04,728 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:52:04,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-02-15 13:52:04,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692644235] [2023-02-15 13:52:04,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:52:04,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 13:52:04,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:04,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 13:52:04,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-02-15 13:52:04,729 INFO L87 Difference]: Start difference. First operand 153 states and 187 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-15 13:52:04,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:04,750 INFO L93 Difference]: Finished difference Result 175 states and 214 transitions. [2023-02-15 13:52:04,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-15 13:52:04,751 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) Word has length 60 [2023-02-15 13:52:04,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:04,752 INFO L225 Difference]: With dead ends: 175 [2023-02-15 13:52:04,752 INFO L226 Difference]: Without dead ends: 168 [2023-02-15 13:52:04,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-02-15 13:52:04,752 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:04,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 209 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:04,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-02-15 13:52:04,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-02-15 13:52:04,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 123 states have (on average 1.089430894308943) internal successors, (134), 125 states have internal predecessors, (134), 26 states have call successors, (26), 9 states have call predecessors, (26), 16 states have return successors, (42), 33 states have call predecessors, (42), 25 states have call successors, (42) [2023-02-15 13:52:04,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 202 transitions. [2023-02-15 13:52:04,758 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 202 transitions. Word has length 60 [2023-02-15 13:52:04,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:04,759 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 202 transitions. [2023-02-15 13:52:04,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 10 states have internal predecessors, (36), 1 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (8), 5 states have call predecessors, (8), 1 states have call successors, (8) [2023-02-15 13:52:04,759 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 202 transitions. [2023-02-15 13:52:04,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-02-15 13:52:04,759 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:04,759 INFO L195 NwaCegarLoop]: trace histogram [10, 8, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:04,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 13:52:04,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-15 13:52:04,963 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:04,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:04,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1564735666, now seen corresponding path program 2 times [2023-02-15 13:52:04,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:04,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320929326] [2023-02-15 13:52:04,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:04,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:04,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 13:52:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-02-15 13:52:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 13:52:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,046 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 67 proven. 28 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-02-15 13:52:05,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:05,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320929326] [2023-02-15 13:52:05,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320929326] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:05,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335797861] [2023-02-15 13:52:05,046 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:52:05,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:05,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:05,047 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 13:52:05,076 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 13:52:05,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 13:52:05,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:52:05,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 13:52:05,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 67 proven. 28 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-02-15 13:52:05,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:52:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 67 proven. 28 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-02-15 13:52:05,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335797861] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:52:05,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:52:05,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 11 [2023-02-15 13:52:05,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016474290] [2023-02-15 13:52:05,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:52:05,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 13:52:05,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:05,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 13:52:05,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-02-15 13:52:05,237 INFO L87 Difference]: Start difference. First operand 168 states and 202 transitions. Second operand has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-15 13:52:05,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:05,292 INFO L93 Difference]: Finished difference Result 273 states and 334 transitions. [2023-02-15 13:52:05,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 13:52:05,293 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 79 [2023-02-15 13:52:05,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:05,293 INFO L225 Difference]: With dead ends: 273 [2023-02-15 13:52:05,293 INFO L226 Difference]: Without dead ends: 106 [2023-02-15 13:52:05,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 167 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-02-15 13:52:05,294 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 15 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:05,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 119 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:05,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-15 13:52:05,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2023-02-15 13:52:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 69 states have (on average 1.0579710144927537) internal successors, (73), 71 states have internal predecessors, (73), 12 states have call successors, (12), 7 states have call predecessors, (12), 12 states have return successors, (18), 15 states have call predecessors, (18), 11 states have call successors, (18) [2023-02-15 13:52:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2023-02-15 13:52:05,298 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 79 [2023-02-15 13:52:05,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:05,298 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2023-02-15 13:52:05,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 5 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2023-02-15 13:52:05,298 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2023-02-15 13:52:05,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-02-15 13:52:05,299 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:05,299 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 21, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1] [2023-02-15 13:52:05,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-15 13:52:05,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:05,503 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-15 13:52:05,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:05,504 INFO L85 PathProgramCache]: Analyzing trace with hash -735274848, now seen corresponding path program 2 times [2023-02-15 13:52:05,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:05,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950435146] [2023-02-15 13:52:05,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:05,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-15 13:52:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 13:52:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-15 13:52:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:05,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 13:52:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-15 13:52:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 13:52:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-02-15 13:52:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 13:52:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-02-15 13:52:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 13:52:05,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-02-15 13:52:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 13:52:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-02-15 13:52:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 13:52:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-02-15 13:52:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:05,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 58 proven. 307 refuted. 0 times theorem prover too weak. 1606 trivial. 0 not checked. [2023-02-15 13:52:05,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:05,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950435146] [2023-02-15 13:52:05,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950435146] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:05,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989130358] [2023-02-15 13:52:05,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:52:05,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:05,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:05,742 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 13:52:05,744 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 13:52:05,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 13:52:05,827 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:52:05,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 13:52:05,832 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:05,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 862 proven. 24 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2023-02-15 13:52:05,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:52:06,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 58 proven. 307 refuted. 0 times theorem prover too weak. 1606 trivial. 0 not checked. [2023-02-15 13:52:06,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989130358] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:52:06,171 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:52:06,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 13 [2023-02-15 13:52:06,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676062970] [2023-02-15 13:52:06,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:52:06,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 13:52:06,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:06,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 13:52:06,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-15 13:52:06,173 INFO L87 Difference]: Start difference. First operand 94 states and 103 transitions. Second operand has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 6 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2023-02-15 13:52:06,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:06,301 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2023-02-15 13:52:06,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-15 13:52:06,301 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 6 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 274 [2023-02-15 13:52:06,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:06,302 INFO L225 Difference]: With dead ends: 138 [2023-02-15 13:52:06,302 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 13:52:06,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 604 SyntacticMatches, 7 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-02-15 13:52:06,302 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 30 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:06,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 164 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:52:06,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 13:52:06,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 13:52:06,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:06,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 13:52:06,303 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 274 [2023-02-15 13:52:06,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:06,303 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 13:52:06,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.0) internal successors, (78), 12 states have internal predecessors, (78), 6 states have call successors, (19), 3 states have call predecessors, (19), 5 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2023-02-15 13:52:06,303 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 13:52:06,304 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 13:52:06,305 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2023-02-15 13:52:06,306 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-02-15 13:52:06,306 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-02-15 13:52:06,306 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-02-15 13:52:06,306 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-02-15 13:52:06,306 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-02-15 13:52:06,306 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-02-15 13:52:06,306 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-02-15 13:52:06,306 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-02-15 13:52:06,306 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-02-15 13:52:06,310 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 13:52:06,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:06,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 13:52:06,778 INFO L899 garLoopResultBuilder]: For program point rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-15 13:52:06,778 INFO L899 garLoopResultBuilder]: For program point rec1FINAL(lines 11 15) no Hoare annotation was computed. [2023-02-15 13:52:06,778 INFO L899 garLoopResultBuilder]: For program point rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-15 13:52:06,779 INFO L899 garLoopResultBuilder]: For program point rec1EXIT(lines 11 15) no Hoare annotation was computed. [2023-02-15 13:52:06,779 INFO L899 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2023-02-15 13:52:06,779 INFO L899 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2023-02-15 13:52:06,779 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-02-15 13:52:06,779 INFO L895 garLoopResultBuilder]: At program point L14-2(line 14) the Hoare annotation is: (and (not (<= |rec1_#in~i| 2147483646)) (or (= |rec1_#in~i| rec1_~i) (not (<= |rec1_#in~i| 2147483647)))) [2023-02-15 13:52:06,779 INFO L899 garLoopResultBuilder]: For program point L14-3(line 14) no Hoare annotation was computed. [2023-02-15 13:52:06,779 INFO L899 garLoopResultBuilder]: For program point L14-4(line 14) no Hoare annotation was computed. [2023-02-15 13:52:06,779 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 15) the Hoare annotation is: true [2023-02-15 13:52:06,779 INFO L899 garLoopResultBuilder]: For program point rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-15 13:52:06,779 INFO L899 garLoopResultBuilder]: For program point L14-5(line 14) no Hoare annotation was computed. [2023-02-15 13:52:06,779 INFO L895 garLoopResultBuilder]: At program point L14-6(line 14) the Hoare annotation is: (and (not (<= |rec1_#in~i| 2147483646)) (or (and (= |rec1_#in~i| rec1_~i) (<= |rec1_#t~ret0| 1)) (not (<= |rec1_#in~i| 2147483647)))) [2023-02-15 13:52:06,779 INFO L899 garLoopResultBuilder]: For program point rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-15 13:52:06,779 INFO L899 garLoopResultBuilder]: For program point rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-15 13:52:06,779 INFO L899 garLoopResultBuilder]: For program point L14-7(line 14) no Hoare annotation was computed. [2023-02-15 13:52:06,780 INFO L899 garLoopResultBuilder]: For program point rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-15 13:52:06,780 INFO L895 garLoopResultBuilder]: At program point L14-8(line 14) the Hoare annotation is: (and (not (<= |rec1_#in~i| 2147483646)) (or (and (<= |rec1_#t~ret1| 0) (= |rec1_#in~i| rec1_~i) (<= |rec1_#t~ret0| 1)) (not (<= |rec1_#in~i| 2147483647)))) [2023-02-15 13:52:06,780 INFO L899 garLoopResultBuilder]: For program point L14-9(line 14) no Hoare annotation was computed. [2023-02-15 13:52:06,780 INFO L899 garLoopResultBuilder]: For program point L14-10(line 14) no Hoare annotation was computed. [2023-02-15 13:52:06,780 INFO L899 garLoopResultBuilder]: For program point L14-11(line 14) no Hoare annotation was computed. [2023-02-15 13:52:06,780 INFO L899 garLoopResultBuilder]: For program point rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-15 13:52:06,780 INFO L899 garLoopResultBuilder]: For program point rec2FINAL(lines 17 21) no Hoare annotation was computed. [2023-02-15 13:52:06,780 INFO L899 garLoopResultBuilder]: For program point rec2EXIT(lines 17 21) no Hoare annotation was computed. [2023-02-15 13:52:06,780 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-02-15 13:52:06,780 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2023-02-15 13:52:06,780 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 19) no Hoare annotation was computed. [2023-02-15 13:52:06,780 INFO L895 garLoopResultBuilder]: At program point L20-2(line 20) the Hoare annotation is: (and (or (not (<= |rec2_#in~j| 1)) (<= rec2_~j 1)) (not (<= |rec2_#in~j| 0)) (or (not (<= |rec2_#in~j| 2147483647)) (and (<= 1 rec2_~j) (<= rec2_~j 2147483647)))) [2023-02-15 13:52:06,780 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2023-02-15 13:52:06,780 INFO L895 garLoopResultBuilder]: At program point L20-4(line 20) the Hoare annotation is: (and (not (<= |rec2_#in~j| 0)) (or (<= |rec2_#t~ret3| 0) (not (<= |rec2_#in~j| 1))) (or (not (<= |rec2_#in~j| 2147483647)) (and (<= |rec2_#t~ret3| 1) (<= 1 rec2_~j) (<= rec2_~j 2147483647)))) [2023-02-15 13:52:06,780 INFO L899 garLoopResultBuilder]: For program point L20-5(line 20) no Hoare annotation was computed. [2023-02-15 13:52:06,780 INFO L899 garLoopResultBuilder]: For program point L20-6(line 20) no Hoare annotation was computed. [2023-02-15 13:52:06,780 INFO L899 garLoopResultBuilder]: For program point L20-7(line 20) no Hoare annotation was computed. [2023-02-15 13:52:06,781 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 21) the Hoare annotation is: true [2023-02-15 13:52:06,781 INFO L899 garLoopResultBuilder]: For program point rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-15 13:52:06,781 INFO L899 garLoopResultBuilder]: For program point rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-15 13:52:06,781 INFO L899 garLoopResultBuilder]: For program point rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-15 13:52:06,781 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 13:52:06,781 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 13:52:06,781 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 13:52:06,781 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 13:52:06,781 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 2147483647) [2023-02-15 13:52:06,781 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-02-15 13:52:06,781 INFO L899 garLoopResultBuilder]: For program point L23(lines 23 26) no Hoare annotation was computed. [2023-02-15 13:52:06,783 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:06,784 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 13:52:06,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 01:52:06 BoogieIcfgContainer [2023-02-15 13:52:06,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 13:52:06,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 13:52:06,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 13:52:06,787 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 13:52:06,787 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:52:01" (3/4) ... [2023-02-15 13:52:06,789 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 13:52:06,793 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec1 [2023-02-15 13:52:06,793 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec2 [2023-02-15 13:52:06,797 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-02-15 13:52:06,797 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-02-15 13:52:06,797 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 13:52:06,821 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 13:52:06,821 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 13:52:06,821 INFO L158 Benchmark]: Toolchain (without parser) took 5776.99ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 92.5MB in the beginning and 81.0MB in the end (delta: 11.6MB). Peak memory consumption was 37.3MB. Max. memory is 16.1GB. [2023-02-15 13:52:06,822 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 102.8MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 13:52:06,822 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.96ms. Allocated memory is still 136.3MB. Free memory was 92.0MB in the beginning and 105.0MB in the end (delta: -12.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-02-15 13:52:06,822 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.31ms. Allocated memory is still 136.3MB. Free memory was 105.0MB in the beginning and 103.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 13:52:06,823 INFO L158 Benchmark]: Boogie Preprocessor took 17.13ms. Allocated memory is still 136.3MB. Free memory was 103.9MB in the beginning and 102.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 13:52:06,823 INFO L158 Benchmark]: RCFGBuilder took 207.29ms. Allocated memory is still 136.3MB. Free memory was 102.8MB in the beginning and 92.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 13:52:06,831 INFO L158 Benchmark]: TraceAbstraction took 5308.11ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 91.8MB in the beginning and 84.1MB in the end (delta: 7.7MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. [2023-02-15 13:52:06,831 INFO L158 Benchmark]: Witness Printer took 34.21ms. Allocated memory is still 163.6MB. Free memory was 84.1MB in the beginning and 81.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 13:52:06,832 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 102.8MB. Free memory is still 73.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.96ms. Allocated memory is still 136.3MB. Free memory was 92.0MB in the beginning and 105.0MB in the end (delta: -12.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.31ms. Allocated memory is still 136.3MB. Free memory was 105.0MB in the beginning and 103.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.13ms. Allocated memory is still 136.3MB. Free memory was 103.9MB in the beginning and 102.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 207.29ms. Allocated memory is still 136.3MB. Free memory was 102.8MB in the beginning and 92.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 5308.11ms. Allocated memory was 136.3MB in the beginning and 163.6MB in the end (delta: 27.3MB). Free memory was 91.8MB in the beginning and 84.1MB in the end (delta: 7.7MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. * Witness Printer took 34.21ms. Allocated memory is still 163.6MB. Free memory was 84.1MB in the beginning and 81.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 14]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 45 locations, 10 error locations. Started 1 CEGAR loops. OverallTime: 5.3s, OverallIterations: 20, TraceHistogramMax: 28, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 309 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 279 mSDsluCounter, 2695 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1909 mSDsCounter, 78 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 853 IncrementalHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 78 mSolverCounterUnsat, 786 mSDtfsCounter, 853 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1247 GetRequests, 1115 SyntacticMatches, 12 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=168occurred in iteration=18, InterpolantAutomatonStates: 121, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 20 MinimizatonAttempts, 91 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 257 PreInvPairs, 279 NumberOfFragments, 108 HoareAnnotationTreeSize, 257 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 1080 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 1422 NumberOfCodeBlocks, 1422 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1806 ConstructedInterpolants, 0 QuantifiedInterpolants, 2544 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1118 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 29 InterpolantComputations, 17 PerfectInterpolantSequences, 6297/7037 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-02-15 13:52:06,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE