./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 26d01a9c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted/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-?-26d01a9 [2023-02-18 07:57:58,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 07:57:58,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 07:57:58,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 07:57:58,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 07:57:58,414 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 07:57:58,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 07:57:58,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 07:57:58,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 07:57:58,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 07:57:58,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 07:57:58,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 07:57:58,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 07:57:58,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 07:57:58,425 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 07:57:58,426 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 07:57:58,428 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 07:57:58,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 07:57:58,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 07:57:58,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 07:57:58,435 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 07:57:58,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 07:57:58,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 07:57:58,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 07:57:58,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 07:57:58,453 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 07:57:58,453 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 07:57:58,454 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 07:57:58,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 07:57:58,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 07:57:58,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 07:57:58,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 07:57:58,457 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 07:57:58,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 07:57:58,458 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 07:57:58,458 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 07:57:58,459 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 07:57:58,459 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 07:57:58,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 07:57:58,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 07:57:58,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 07:57:58,463 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-18 07:57:58,484 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 07:57:58,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 07:57:58,485 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 07:57:58,485 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 07:57:58,485 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 07:57:58,486 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 07:57:58,487 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 07:57:58,487 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 07:57:58,487 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 07:57:58,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 07:57:58,488 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 07:57:58,488 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 07:57:58,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 07:57:58,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 07:57:58,488 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 07:57:58,488 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 07:57:58,488 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-18 07:57:58,489 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 07:57:58,489 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 07:57:58,489 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 07:57:58,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 07:57:58,489 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 07:57:58,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 07:57:58,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:57:58,490 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 07:57:58,490 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 07:57:58,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 07:57:58,490 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 07:57:58,490 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 07:57:58,491 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 07:57:58,491 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 07:57:58,491 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 07:57:58,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 07:57:58,491 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 07:57:58,491 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9948dbd77aeb2de72e0bd3a3a4e22b1606b19383e4631af58adbec46ed909b6c [2023-02-18 07:57:58,646 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 07:57:58,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 07:57:58,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 07:57:58,706 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 07:57:58,706 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 07:57:58,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2023-02-18 07:57:59,710 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 07:57:59,876 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 07:57:59,876 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_1b.c [2023-02-18 07:57:59,880 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49a8ff5a1/6bdf6757215c4c84bd57ce963de08b32/FLAG8f991940a [2023-02-18 07:57:59,895 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49a8ff5a1/6bdf6757215c4c84bd57ce963de08b32 [2023-02-18 07:57:59,897 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 07:57:59,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 07:57:59,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 07:57:59,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 07:57:59,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 07:57:59,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:57:59" (1/1) ... [2023-02-18 07:57:59,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3440e042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:57:59, skipping insertion in model container [2023-02-18 07:57:59,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 07:57:59" (1/1) ... [2023-02-18 07:57:59,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 07:57:59,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 07:58:00,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:58:00,006 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 07:58:00,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 07:58:00,023 INFO L208 MainTranslator]: Completed translation [2023-02-18 07:58:00,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:00 WrapperNode [2023-02-18 07:58:00,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 07:58:00,030 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 07:58:00,030 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 07:58:00,030 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 07:58:00,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:00" (1/1) ... [2023-02-18 07:58:00,038 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:00" (1/1) ... [2023-02-18 07:58:00,048 INFO L138 Inliner]: procedures = 6, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8 [2023-02-18 07:58:00,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 07:58:00,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 07:58:00,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 07:58:00,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 07:58:00,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:00" (1/1) ... [2023-02-18 07:58:00,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:00" (1/1) ... [2023-02-18 07:58:00,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:00" (1/1) ... [2023-02-18 07:58:00,058 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:00" (1/1) ... [2023-02-18 07:58:00,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:00" (1/1) ... [2023-02-18 07:58:00,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:00" (1/1) ... [2023-02-18 07:58:00,062 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:00" (1/1) ... [2023-02-18 07:58:00,063 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:00" (1/1) ... [2023-02-18 07:58:00,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 07:58:00,064 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 07:58:00,064 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 07:58:00,064 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 07:58:00,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:00" (1/1) ... [2023-02-18 07:58:00,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 07:58:00,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:00,085 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 07:58:00,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 07:58:00,109 INFO L130 BoogieDeclarations]: Found specification of procedure rec1 [2023-02-18 07:58:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure rec1 [2023-02-18 07:58:00,109 INFO L130 BoogieDeclarations]: Found specification of procedure rec2 [2023-02-18 07:58:00,109 INFO L138 BoogieDeclarations]: Found implementation of procedure rec2 [2023-02-18 07:58:00,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 07:58:00,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 07:58:00,146 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 07:58:00,148 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 07:58:00,271 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 07:58:00,276 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 07:58:00,277 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-18 07:58:00,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:58:00 BoogieIcfgContainer [2023-02-18 07:58:00,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 07:58:00,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 07:58:00,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 07:58:00,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 07:58:00,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 07:57:59" (1/3) ... [2023-02-18 07:58:00,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f6c901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:58:00, skipping insertion in model container [2023-02-18 07:58:00,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 07:58:00" (2/3) ... [2023-02-18 07:58:00,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17f6c901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 07:58:00, skipping insertion in model container [2023-02-18 07:58:00,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:58:00" (3/3) ... [2023-02-18 07:58:00,284 INFO L112 eAbstractionObserver]: Analyzing ICFG NestedRecursion_1b.c [2023-02-18 07:58:00,329 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 07:58:00,330 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-02-18 07:58:00,401 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 07:58:00,405 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;@5dcb5acb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 07:58:00,406 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-02-18 07:58:00,409 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) [2023-02-18 07:58:00,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-18 07:58:00,415 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:00,415 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-18 07:58:00,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:00,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:00,421 INFO L85 PathProgramCache]: Analyzing trace with hash 2132374368, now seen corresponding path program 1 times [2023-02-18 07:58:00,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:00,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081268332] [2023-02-18 07:58:00,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:00,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:00,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:00,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:00,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081268332] [2023-02-18 07:58:00,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081268332] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:00,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:00,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:58:00,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155890747] [2023-02-18 07:58:00,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:00,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:58:00,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:00,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:58:00,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:58:00,574 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) [2023-02-18 07:58:00,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:00,626 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2023-02-18 07:58:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:58:00,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-18 07:58:00,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:00,645 INFO L225 Difference]: With dead ends: 47 [2023-02-18 07:58:00,646 INFO L226 Difference]: Without dead ends: 42 [2023-02-18 07:58:00,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:58:00,650 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 [2023-02-18 07:58:00,651 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] [2023-02-18 07:58:00,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-02-18 07:58:00,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2023-02-18 07:58:00,679 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) [2023-02-18 07:58:00,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2023-02-18 07:58:00,682 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 6 [2023-02-18 07:58:00,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:00,683 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2023-02-18 07:58:00,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:58:00,683 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2023-02-18 07:58:00,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-18 07:58:00,684 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:00,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:00,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 07:58:00,685 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:00,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:00,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1679096030, now seen corresponding path program 1 times [2023-02-18 07:58:00,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:00,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173546077] [2023-02-18 07:58:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:00,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:00,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:00,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:00,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173546077] [2023-02-18 07:58:00,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173546077] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:00,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:00,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 07:58:00,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526892716] [2023-02-18 07:58:00,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:00,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:58:00,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:00,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:58:00,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 07:58:00,752 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) [2023-02-18 07:58:00,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:00,792 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2023-02-18 07:58:00,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:58:00,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-18 07:58:00,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:00,793 INFO L225 Difference]: With dead ends: 57 [2023-02-18 07:58:00,793 INFO L226 Difference]: Without dead ends: 54 [2023-02-18 07:58:00,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 07:58:00,795 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 [2023-02-18 07:58:00,795 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] [2023-02-18 07:58:00,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-18 07:58:00,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2023-02-18 07:58:00,801 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) [2023-02-18 07:58:00,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2023-02-18 07:58:00,802 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 7 [2023-02-18 07:58:00,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:00,802 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2023-02-18 07:58:00,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:58:00,803 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2023-02-18 07:58:00,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-18 07:58:00,803 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:00,803 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:00,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 07:58:00,804 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:00,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:00,804 INFO L85 PathProgramCache]: Analyzing trace with hash -315038040, now seen corresponding path program 1 times [2023-02-18 07:58:00,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:00,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286677733] [2023-02-18 07:58:00,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:00,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:00,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:00,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:00,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286677733] [2023-02-18 07:58:00,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286677733] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:00,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:00,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:58:00,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469763563] [2023-02-18 07:58:00,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:00,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:58:00,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:00,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:58:00,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:58:00,823 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) [2023-02-18 07:58:00,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:00,835 INFO L93 Difference]: Finished difference Result 52 states and 64 transitions. [2023-02-18 07:58:00,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:58:00,836 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 [2023-02-18 07:58:00,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:00,836 INFO L225 Difference]: With dead ends: 52 [2023-02-18 07:58:00,836 INFO L226 Difference]: Without dead ends: 51 [2023-02-18 07:58:00,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:58:00,839 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 [2023-02-18 07:58:00,839 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] [2023-02-18 07:58:00,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-18 07:58:00,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2023-02-18 07:58:00,845 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) [2023-02-18 07:58:00,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2023-02-18 07:58:00,846 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 11 [2023-02-18 07:58:00,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:00,846 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2023-02-18 07:58:00,846 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) [2023-02-18 07:58:00,846 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2023-02-18 07:58:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 07:58:00,847 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:00,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:00,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 07:58:00,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:00,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:00,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1176244610, now seen corresponding path program 1 times [2023-02-18 07:58:00,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:00,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302978765] [2023-02-18 07:58:00,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:00,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:00,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:00,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:00,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302978765] [2023-02-18 07:58:00,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302978765] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:00,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:00,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 07:58:00,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671866035] [2023-02-18 07:58:00,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:00,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 07:58:00,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:00,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 07:58:00,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-18 07:58:00,893 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) [2023-02-18 07:58:00,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:00,968 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2023-02-18 07:58:00,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 07:58:00,969 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 [2023-02-18 07:58:00,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:00,970 INFO L225 Difference]: With dead ends: 76 [2023-02-18 07:58:00,970 INFO L226 Difference]: Without dead ends: 75 [2023-02-18 07:58:00,970 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 [2023-02-18 07:58:00,971 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 47 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2023-02-18 07:58:00,972 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] [2023-02-18 07:58:00,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-02-18 07:58:00,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 65. [2023-02-18 07:58:00,979 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) [2023-02-18 07:58:00,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions. [2023-02-18 07:58:00,980 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 12 [2023-02-18 07:58:00,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:00,980 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 80 transitions. [2023-02-18 07:58:00,981 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) [2023-02-18 07:58:00,981 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions. [2023-02-18 07:58:00,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 07:58:00,981 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:00,982 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:00,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 07:58:00,982 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:00,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:00,982 INFO L85 PathProgramCache]: Analyzing trace with hash 2079532187, now seen corresponding path program 1 times [2023-02-18 07:58:00,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:00,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395112252] [2023-02-18 07:58:00,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:00,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 07:58:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,032 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 07:58:01,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:01,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395112252] [2023-02-18 07:58:01,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395112252] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:01,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:01,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 07:58:01,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889606228] [2023-02-18 07:58:01,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:01,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 07:58:01,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:01,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 07:58:01,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 07:58:01,035 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) [2023-02-18 07:58:01,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:01,067 INFO L93 Difference]: Finished difference Result 126 states and 161 transitions. [2023-02-18 07:58:01,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 07:58:01,068 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 [2023-02-18 07:58:01,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:01,069 INFO L225 Difference]: With dead ends: 126 [2023-02-18 07:58:01,069 INFO L226 Difference]: Without dead ends: 87 [2023-02-18 07:58:01,070 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 [2023-02-18 07:58:01,071 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 [2023-02-18 07:58:01,071 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] [2023-02-18 07:58:01,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-18 07:58:01,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 77. [2023-02-18 07:58:01,079 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) [2023-02-18 07:58:01,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2023-02-18 07:58:01,080 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 18 [2023-02-18 07:58:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:01,081 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2023-02-18 07:58:01,081 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) [2023-02-18 07:58:01,081 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2023-02-18 07:58:01,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-18 07:58:01,082 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:01,082 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:01,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-18 07:58:01,082 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:01,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:01,083 INFO L85 PathProgramCache]: Analyzing trace with hash 643212051, now seen corresponding path program 1 times [2023-02-18 07:58:01,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:01,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766178232] [2023-02-18 07:58:01,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:01,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:01,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:01,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:01,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766178232] [2023-02-18 07:58:01,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766178232] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:01,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:01,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 07:58:01,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101941413] [2023-02-18 07:58:01,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:01,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 07:58:01,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:01,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 07:58:01,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 07:58:01,156 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) [2023-02-18 07:58:01,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:01,186 INFO L93 Difference]: Finished difference Result 98 states and 133 transitions. [2023-02-18 07:58:01,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 07:58:01,187 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 [2023-02-18 07:58:01,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:01,189 INFO L225 Difference]: With dead ends: 98 [2023-02-18 07:58:01,189 INFO L226 Difference]: Without dead ends: 97 [2023-02-18 07:58:01,189 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 [2023-02-18 07:58:01,190 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 [2023-02-18 07:58:01,190 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] [2023-02-18 07:58:01,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-02-18 07:58:01,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 81. [2023-02-18 07:58:01,198 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) [2023-02-18 07:58:01,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 103 transitions. [2023-02-18 07:58:01,199 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 103 transitions. Word has length 19 [2023-02-18 07:58:01,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:01,199 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 103 transitions. [2023-02-18 07:58:01,200 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) [2023-02-18 07:58:01,200 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 103 transitions. [2023-02-18 07:58:01,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 07:58:01,200 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:01,200 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:01,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-18 07:58:01,201 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:01,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:01,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1270071308, now seen corresponding path program 1 times [2023-02-18 07:58:01,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:01,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112584185] [2023-02-18 07:58:01,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:01,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:01,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 07:58:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-18 07:58:01,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:01,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:01,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112584185] [2023-02-18 07:58:01,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112584185] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:01,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:01,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 07:58:01,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947131327] [2023-02-18 07:58:01,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:01,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 07:58:01,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:01,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 07:58:01,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 07:58:01,271 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) [2023-02-18 07:58:01,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:01,296 INFO L93 Difference]: Finished difference Result 90 states and 115 transitions. [2023-02-18 07:58:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 07:58:01,297 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 [2023-02-18 07:58:01,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:01,298 INFO L225 Difference]: With dead ends: 90 [2023-02-18 07:58:01,298 INFO L226 Difference]: Without dead ends: 89 [2023-02-18 07:58:01,299 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 [2023-02-18 07:58:01,301 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 [2023-02-18 07:58:01,301 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] [2023-02-18 07:58:01,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-18 07:58:01,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 87. [2023-02-18 07:58:01,313 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) [2023-02-18 07:58:01,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 110 transitions. [2023-02-18 07:58:01,317 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 110 transitions. Word has length 20 [2023-02-18 07:58:01,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:01,317 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 110 transitions. [2023-02-18 07:58:01,318 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) [2023-02-18 07:58:01,318 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 110 transitions. [2023-02-18 07:58:01,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 07:58:01,319 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:01,319 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:01,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-18 07:58:01,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:01,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:01,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1535262855, now seen corresponding path program 1 times [2023-02-18 07:58:01,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:01,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984267301] [2023-02-18 07:58:01,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:01,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:01,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:01,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984267301] [2023-02-18 07:58:01,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984267301] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:01,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:01,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:58:01,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479027160] [2023-02-18 07:58:01,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:01,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:58:01,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:01,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:58:01,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:58:01,362 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) [2023-02-18 07:58:01,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:01,370 INFO L93 Difference]: Finished difference Result 87 states and 110 transitions. [2023-02-18 07:58:01,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:58:01,371 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 [2023-02-18 07:58:01,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:01,371 INFO L225 Difference]: With dead ends: 87 [2023-02-18 07:58:01,372 INFO L226 Difference]: Without dead ends: 86 [2023-02-18 07:58:01,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:58:01,373 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 [2023-02-18 07:58:01,373 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] [2023-02-18 07:58:01,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-18 07:58:01,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-02-18 07:58:01,378 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) [2023-02-18 07:58:01,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 108 transitions. [2023-02-18 07:58:01,379 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 108 transitions. Word has length 20 [2023-02-18 07:58:01,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:01,380 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 108 transitions. [2023-02-18 07:58:01,380 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) [2023-02-18 07:58:01,380 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 108 transitions. [2023-02-18 07:58:01,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 07:58:01,381 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:01,381 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] [2023-02-18 07:58:01,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-18 07:58:01,381 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:01,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:01,381 INFO L85 PathProgramCache]: Analyzing trace with hash 717504954, now seen corresponding path program 1 times [2023-02-18 07:58:01,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:01,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961680495] [2023-02-18 07:58:01,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:01,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 07:58:01,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-18 07:58:01,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:01,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:01,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961680495] [2023-02-18 07:58:01,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961680495] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:01,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:01,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:58:01,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245237249] [2023-02-18 07:58:01,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:01,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:58:01,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:01,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:58:01,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:58:01,436 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) [2023-02-18 07:58:01,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:01,442 INFO L93 Difference]: Finished difference Result 86 states and 108 transitions. [2023-02-18 07:58:01,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:58:01,442 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 [2023-02-18 07:58:01,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:01,443 INFO L225 Difference]: With dead ends: 86 [2023-02-18 07:58:01,443 INFO L226 Difference]: Without dead ends: 80 [2023-02-18 07:58:01,443 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 [2023-02-18 07:58:01,444 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 [2023-02-18 07:58:01,444 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] [2023-02-18 07:58:01,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-02-18 07:58:01,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-02-18 07:58:01,449 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) [2023-02-18 07:58:01,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2023-02-18 07:58:01,450 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 21 [2023-02-18 07:58:01,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:01,450 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2023-02-18 07:58:01,450 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) [2023-02-18 07:58:01,450 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2023-02-18 07:58:01,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 07:58:01,451 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:01,451 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] [2023-02-18 07:58:01,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-18 07:58:01,451 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:01,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:01,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1649259199, now seen corresponding path program 1 times [2023-02-18 07:58:01,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:01,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067183254] [2023-02-18 07:58:01,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:01,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 07:58:01,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:01,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067183254] [2023-02-18 07:58:01,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067183254] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:01,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:01,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 07:58:01,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256487100] [2023-02-18 07:58:01,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:01,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 07:58:01,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:01,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 07:58:01,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 07:58:01,487 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) [2023-02-18 07:58:01,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:01,534 INFO L93 Difference]: Finished difference Result 163 states and 218 transitions. [2023-02-18 07:58:01,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 07:58:01,535 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 [2023-02-18 07:58:01,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:01,537 INFO L225 Difference]: With dead ends: 163 [2023-02-18 07:58:01,537 INFO L226 Difference]: Without dead ends: 100 [2023-02-18 07:58:01,541 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 [2023-02-18 07:58:01,541 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 [2023-02-18 07:58:01,543 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] [2023-02-18 07:58:01,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-18 07:58:01,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 88. [2023-02-18 07:58:01,555 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) [2023-02-18 07:58:01,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2023-02-18 07:58:01,556 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 25 [2023-02-18 07:58:01,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:01,556 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2023-02-18 07:58:01,556 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) [2023-02-18 07:58:01,557 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2023-02-18 07:58:01,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-18 07:58:01,557 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:01,557 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] [2023-02-18 07:58:01,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-18 07:58:01,558 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:01,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:01,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1854006348, now seen corresponding path program 1 times [2023-02-18 07:58:01,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:01,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004904478] [2023-02-18 07:58:01,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:01,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-18 07:58:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-18 07:58:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,643 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 07:58:01,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:01,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004904478] [2023-02-18 07:58:01,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004904478] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:01,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:01,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 07:58:01,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275186561] [2023-02-18 07:58:01,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:01,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 07:58:01,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:01,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 07:58:01,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 07:58:01,645 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) [2023-02-18 07:58:01,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:01,691 INFO L93 Difference]: Finished difference Result 173 states and 223 transitions. [2023-02-18 07:58:01,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 07:58:01,692 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 [2023-02-18 07:58:01,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:01,694 INFO L225 Difference]: With dead ends: 173 [2023-02-18 07:58:01,694 INFO L226 Difference]: Without dead ends: 104 [2023-02-18 07:58:01,695 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 [2023-02-18 07:58:01,695 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 [2023-02-18 07:58:01,695 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] [2023-02-18 07:58:01,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-02-18 07:58:01,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 96. [2023-02-18 07:58:01,712 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) [2023-02-18 07:58:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 116 transitions. [2023-02-18 07:58:01,713 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 116 transitions. Word has length 36 [2023-02-18 07:58:01,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:01,717 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 116 transitions. [2023-02-18 07:58:01,717 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) [2023-02-18 07:58:01,717 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 116 transitions. [2023-02-18 07:58:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-18 07:58:01,717 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:01,717 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] [2023-02-18 07:58:01,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-18 07:58:01,718 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:01,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:01,718 INFO L85 PathProgramCache]: Analyzing trace with hash -711697781, now seen corresponding path program 1 times [2023-02-18 07:58:01,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:01,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404709458] [2023-02-18 07:58:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:01,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-18 07:58:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-02-18 07:58:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-02-18 07:58:01,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,751 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-02-18 07:58:01,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:01,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404709458] [2023-02-18 07:58:01,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404709458] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:01,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:01,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 07:58:01,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506217068] [2023-02-18 07:58:01,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:01,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 07:58:01,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:01,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 07:58:01,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 07:58:01,753 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) [2023-02-18 07:58:01,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:01,759 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2023-02-18 07:58:01,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 07:58:01,759 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 [2023-02-18 07:58:01,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:01,760 INFO L225 Difference]: With dead ends: 96 [2023-02-18 07:58:01,760 INFO L226 Difference]: Without dead ends: 95 [2023-02-18 07:58:01,761 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 [2023-02-18 07:58:01,761 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 [2023-02-18 07:58:01,761 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] [2023-02-18 07:58:01,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-02-18 07:58:01,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2023-02-18 07:58:01,765 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) [2023-02-18 07:58:01,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 114 transitions. [2023-02-18 07:58:01,766 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 114 transitions. Word has length 38 [2023-02-18 07:58:01,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:01,767 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 114 transitions. [2023-02-18 07:58:01,767 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) [2023-02-18 07:58:01,767 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 114 transitions. [2023-02-18 07:58:01,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-18 07:58:01,767 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:01,768 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] [2023-02-18 07:58:01,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-18 07:58:01,768 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:01,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:01,768 INFO L85 PathProgramCache]: Analyzing trace with hash 750310703, now seen corresponding path program 1 times [2023-02-18 07:58:01,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:01,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765071187] [2023-02-18 07:58:01,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:01,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-02-18 07:58:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-02-18 07:58:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-18 07:58:01,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:01,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765071187] [2023-02-18 07:58:01,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765071187] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:01,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:01,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 07:58:01,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520070131] [2023-02-18 07:58:01,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:01,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 07:58:01,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:01,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 07:58:01,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 07:58:01,794 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) [2023-02-18 07:58:01,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:01,807 INFO L93 Difference]: Finished difference Result 102 states and 122 transitions. [2023-02-18 07:58:01,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 07:58:01,807 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 [2023-02-18 07:58:01,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:01,808 INFO L225 Difference]: With dead ends: 102 [2023-02-18 07:58:01,808 INFO L226 Difference]: Without dead ends: 101 [2023-02-18 07:58:01,809 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 [2023-02-18 07:58:01,809 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 [2023-02-18 07:58:01,809 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] [2023-02-18 07:58:01,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-18 07:58:01,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2023-02-18 07:58:01,813 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) [2023-02-18 07:58:01,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 120 transitions. [2023-02-18 07:58:01,814 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 120 transitions. Word has length 34 [2023-02-18 07:58:01,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:01,814 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 120 transitions. [2023-02-18 07:58:01,814 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) [2023-02-18 07:58:01,814 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 120 transitions. [2023-02-18 07:58:01,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-18 07:58:01,815 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:01,815 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] [2023-02-18 07:58:01,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-02-18 07:58:01,815 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:01,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:01,816 INFO L85 PathProgramCache]: Analyzing trace with hash 188454727, now seen corresponding path program 1 times [2023-02-18 07:58:01,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:01,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318545278] [2023-02-18 07:58:01,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:01,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 07:58:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,874 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-02-18 07:58:01,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:01,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318545278] [2023-02-18 07:58:01,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318545278] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:01,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 07:58:01,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 07:58:01,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12654945] [2023-02-18 07:58:01,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:01,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 07:58:01,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:01,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 07:58:01,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-18 07:58:01,876 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) [2023-02-18 07:58:01,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:01,911 INFO L93 Difference]: Finished difference Result 111 states and 132 transitions. [2023-02-18 07:58:01,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 07:58:01,912 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 [2023-02-18 07:58:01,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:01,913 INFO L225 Difference]: With dead ends: 111 [2023-02-18 07:58:01,914 INFO L226 Difference]: Without dead ends: 110 [2023-02-18 07:58:01,914 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 [2023-02-18 07:58:01,914 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 [2023-02-18 07:58:01,914 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] [2023-02-18 07:58:01,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-02-18 07:58:01,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2023-02-18 07:58:01,919 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) [2023-02-18 07:58:01,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 118 transitions. [2023-02-18 07:58:01,920 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 118 transitions. Word has length 43 [2023-02-18 07:58:01,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:01,921 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 118 transitions. [2023-02-18 07:58:01,921 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) [2023-02-18 07:58:01,921 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 118 transitions. [2023-02-18 07:58:01,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-18 07:58:01,924 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:01,924 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] [2023-02-18 07:58:01,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-18 07:58:01,925 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:01,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:01,926 INFO L85 PathProgramCache]: Analyzing trace with hash 195579087, now seen corresponding path program 1 times [2023-02-18 07:58:01,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:01,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612762604] [2023-02-18 07:58:01,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:01,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:01,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 07:58:01,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:02,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:02,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:02,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 07:58:02,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-18 07:58:02,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:02,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612762604] [2023-02-18 07:58:02,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612762604] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:02,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493491855] [2023-02-18 07:58:02,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:02,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:02,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:02,032 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 07:58:02,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 07:58:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:02,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 07:58:02,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:02,171 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-18 07:58:02,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:58:02,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493491855] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:02,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 07:58:02,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-02-18 07:58:02,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540434715] [2023-02-18 07:58:02,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:02,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 07:58:02,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:02,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 07:58:02,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-02-18 07:58:02,174 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) [2023-02-18 07:58:02,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:02,219 INFO L93 Difference]: Finished difference Result 101 states and 118 transitions. [2023-02-18 07:58:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 07:58:02,220 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 [2023-02-18 07:58:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:02,221 INFO L225 Difference]: With dead ends: 101 [2023-02-18 07:58:02,221 INFO L226 Difference]: Without dead ends: 100 [2023-02-18 07:58:02,223 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 [2023-02-18 07:58:02,223 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 [2023-02-18 07:58:02,223 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] [2023-02-18 07:58:02,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-18 07:58:02,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2023-02-18 07:58:02,228 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) [2023-02-18 07:58:02,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 117 transitions. [2023-02-18 07:58:02,229 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 117 transitions. Word has length 42 [2023-02-18 07:58:02,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:02,229 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 117 transitions. [2023-02-18 07:58:02,230 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) [2023-02-18 07:58:02,230 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 117 transitions. [2023-02-18 07:58:02,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-02-18 07:58:02,231 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:02,231 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] [2023-02-18 07:58:02,236 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 07:58:02,436 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 [2023-02-18 07:58:02,437 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:02,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:02,438 INFO L85 PathProgramCache]: Analyzing trace with hash 725769945, now seen corresponding path program 1 times [2023-02-18 07:58:02,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:02,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792333211] [2023-02-18 07:58:02,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:02,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:02,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-02-18 07:58:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:02,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:02,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:02,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 07:58:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:02,499 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 30 proven. 2 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-02-18 07:58:02,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:02,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792333211] [2023-02-18 07:58:02,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792333211] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:02,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47168007] [2023-02-18 07:58:02,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:02,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:02,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:02,501 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 07:58:02,503 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 07:58:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:02,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 07:58:02,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:02,566 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-18 07:58:02,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:58:02,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47168007] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:02,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 07:58:02,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2023-02-18 07:58:02,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397283169] [2023-02-18 07:58:02,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:02,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 07:58:02,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:02,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 07:58:02,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-02-18 07:58:02,568 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) [2023-02-18 07:58:02,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:02,639 INFO L93 Difference]: Finished difference Result 128 states and 153 transitions. [2023-02-18 07:58:02,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 07:58:02,640 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 [2023-02-18 07:58:02,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:02,640 INFO L225 Difference]: With dead ends: 128 [2023-02-18 07:58:02,641 INFO L226 Difference]: Without dead ends: 127 [2023-02-18 07:58:02,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-02-18 07:58:02,641 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, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 07:58:02,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 163 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 07:58:02,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-02-18 07:58:02,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2023-02-18 07:58:02,647 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) [2023-02-18 07:58:02,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2023-02-18 07:58:02,648 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 54 [2023-02-18 07:58:02,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:02,648 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2023-02-18 07:58:02,648 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) [2023-02-18 07:58:02,648 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2023-02-18 07:58:02,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-18 07:58:02,649 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:02,649 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] [2023-02-18 07:58:02,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 07:58:02,849 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 [2023-02-18 07:58:02,850 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:02,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:02,850 INFO L85 PathProgramCache]: Analyzing trace with hash 330066221, now seen corresponding path program 1 times [2023-02-18 07:58:02,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:02,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498445769] [2023-02-18 07:58:02,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:02,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:02,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 07:58:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:02,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:02,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:02,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 07:58:02,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:02,936 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-18 07:58:02,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:02,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498445769] [2023-02-18 07:58:02,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498445769] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:02,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660474828] [2023-02-18 07:58:02,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:02,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:02,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:02,938 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) [2023-02-18 07:58:02,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 07:58:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:02,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 07:58:03,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:03,018 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-18 07:58:03,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 07:58:03,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660474828] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 07:58:03,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 07:58:03,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2023-02-18 07:58:03,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155027525] [2023-02-18 07:58:03,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 07:58:03,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 07:58:03,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:03,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 07:58:03,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-02-18 07:58:03,020 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) [2023-02-18 07:58:03,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:03,065 INFO L93 Difference]: Finished difference Result 155 states and 188 transitions. [2023-02-18 07:58:03,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 07:58:03,065 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 [2023-02-18 07:58:03,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:03,066 INFO L225 Difference]: With dead ends: 155 [2023-02-18 07:58:03,066 INFO L226 Difference]: Without dead ends: 154 [2023-02-18 07:58:03,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-02-18 07:58:03,067 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 [2023-02-18 07:58:03,067 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] [2023-02-18 07:58:03,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-02-18 07:58:03,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 153. [2023-02-18 07:58:03,071 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) [2023-02-18 07:58:03,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 187 transitions. [2023-02-18 07:58:03,072 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 187 transitions. Word has length 47 [2023-02-18 07:58:03,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:03,072 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 187 transitions. [2023-02-18 07:58:03,073 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) [2023-02-18 07:58:03,073 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 187 transitions. [2023-02-18 07:58:03,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-18 07:58:03,073 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:03,073 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] [2023-02-18 07:58:03,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 07:58:03,273 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 [2023-02-18 07:58:03,274 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:03,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:03,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1425732833, now seen corresponding path program 1 times [2023-02-18 07:58:03,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:03,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635824372] [2023-02-18 07:58:03,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:03,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:03,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 07:58:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 07:58:03,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-02-18 07:58:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-02-18 07:58:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,354 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-18 07:58:03,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:03,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635824372] [2023-02-18 07:58:03,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635824372] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:03,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1504478623] [2023-02-18 07:58:03,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:03,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:03,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:03,356 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) [2023-02-18 07:58:03,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 07:58:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 07:58:03,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:03,397 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-18 07:58:03,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:58:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2023-02-18 07:58:03,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1504478623] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:58:03,429 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:58:03,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-02-18 07:58:03,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959191889] [2023-02-18 07:58:03,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:58:03,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 07:58:03,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:03,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 07:58:03,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-02-18 07:58:03,430 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) [2023-02-18 07:58:03,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:03,455 INFO L93 Difference]: Finished difference Result 175 states and 214 transitions. [2023-02-18 07:58:03,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 07:58:03,456 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 [2023-02-18 07:58:03,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:03,457 INFO L225 Difference]: With dead ends: 175 [2023-02-18 07:58:03,457 INFO L226 Difference]: Without dead ends: 168 [2023-02-18 07:58:03,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 127 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-02-18 07:58:03,458 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 [2023-02-18 07:58:03,458 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] [2023-02-18 07:58:03,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-02-18 07:58:03,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2023-02-18 07:58:03,463 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) [2023-02-18 07:58:03,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 202 transitions. [2023-02-18 07:58:03,464 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 202 transitions. Word has length 60 [2023-02-18 07:58:03,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:03,464 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 202 transitions. [2023-02-18 07:58:03,464 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) [2023-02-18 07:58:03,464 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 202 transitions. [2023-02-18 07:58:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-02-18 07:58:03,465 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:03,465 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] [2023-02-18 07:58:03,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-18 07:58:03,670 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 [2023-02-18 07:58:03,671 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:03,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:03,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1564735666, now seen corresponding path program 2 times [2023-02-18 07:58:03,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:03,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580347814] [2023-02-18 07:58:03,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:03,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:03,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 07:58:03,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-02-18 07:58:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:03,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:03,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 07:58:03,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 67 proven. 28 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-02-18 07:58:03,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:03,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580347814] [2023-02-18 07:58:03,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580347814] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:03,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341551072] [2023-02-18 07:58:03,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 07:58:03,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:03,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:03,787 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) [2023-02-18 07:58:03,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 07:58:03,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 07:58:03,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:58:03,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 07:58:03,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:03,847 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 67 proven. 28 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-02-18 07:58:03,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:58:03,883 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 67 proven. 28 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2023-02-18 07:58:03,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341551072] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:58:03,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:58:03,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 11 [2023-02-18 07:58:03,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123539671] [2023-02-18 07:58:03,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:58:03,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 07:58:03,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:03,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 07:58:03,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-02-18 07:58:03,885 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) [2023-02-18 07:58:03,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:03,936 INFO L93 Difference]: Finished difference Result 273 states and 334 transitions. [2023-02-18 07:58:03,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 07:58:03,937 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 [2023-02-18 07:58:03,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:03,937 INFO L225 Difference]: With dead ends: 273 [2023-02-18 07:58:03,938 INFO L226 Difference]: Without dead ends: 106 [2023-02-18 07:58:03,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 164 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2023-02-18 07:58:03,939 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 [2023-02-18 07:58:03,939 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] [2023-02-18 07:58:03,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-18 07:58:03,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 94. [2023-02-18 07:58:03,942 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) [2023-02-18 07:58:03,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 103 transitions. [2023-02-18 07:58:03,943 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 103 transitions. Word has length 79 [2023-02-18 07:58:03,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:03,943 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 103 transitions. [2023-02-18 07:58:03,943 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) [2023-02-18 07:58:03,943 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 103 transitions. [2023-02-18 07:58:03,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2023-02-18 07:58:03,944 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 07:58:03,944 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] [2023-02-18 07:58:03,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 07:58:04,170 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 [2023-02-18 07:58:04,170 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2023-02-18 07:58:04,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 07:58:04,170 INFO L85 PathProgramCache]: Analyzing trace with hash -735274848, now seen corresponding path program 2 times [2023-02-18 07:58:04,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 07:58:04,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522926680] [2023-02-18 07:58:04,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 07:58:04,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 07:58:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-02-18 07:58:04,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:04,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:04,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 07:58:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-02-18 07:58:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:04,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:04,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 07:58:04,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-02-18 07:58:04,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:04,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 07:58:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2023-02-18 07:58:04,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:04,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:04,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:04,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 07:58:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-02-18 07:58:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 07:58:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-02-18 07:58:04,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 07:58:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-02-18 07:58:04,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 07:58:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-18 07:58:04,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-18 07:58:04,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-02-18 07:58:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 07:58:04,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 58 proven. 307 refuted. 0 times theorem prover too weak. 1606 trivial. 0 not checked. [2023-02-18 07:58:04,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 07:58:04,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522926680] [2023-02-18 07:58:04,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522926680] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 07:58:04,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849280351] [2023-02-18 07:58:04,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 07:58:04,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 07:58:04,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 07:58:04,443 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) [2023-02-18 07:58:04,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 07:58:04,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 07:58:04,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 07:58:04,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 553 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 07:58:04,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 07:58:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 862 proven. 24 refuted. 0 times theorem prover too weak. 1085 trivial. 0 not checked. [2023-02-18 07:58:04,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 07:58:04,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1971 backedges. 58 proven. 307 refuted. 0 times theorem prover too weak. 1606 trivial. 0 not checked. [2023-02-18 07:58:04,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849280351] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 07:58:04,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 07:58:04,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 13 [2023-02-18 07:58:04,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599620764] [2023-02-18 07:58:04,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 07:58:04,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 07:58:04,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 07:58:04,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 07:58:04,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-18 07:58:04,663 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) [2023-02-18 07:58:04,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 07:58:04,777 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2023-02-18 07:58:04,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 07:58:04,778 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 [2023-02-18 07:58:04,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 07:58:04,778 INFO L225 Difference]: With dead ends: 138 [2023-02-18 07:58:04,779 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 07:58:04,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 601 SyntacticMatches, 10 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-02-18 07:58:04,779 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 [2023-02-18 07:58:04,780 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] [2023-02-18 07:58:04,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 07:58:04,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 07:58:04,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 07:58:04,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 07:58:04,781 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 274 [2023-02-18 07:58:04,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 07:58:04,781 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 07:58:04,781 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) [2023-02-18 07:58:04,781 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 07:58:04,781 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 07:58:04,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2023-02-18 07:58:04,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2023-02-18 07:58:04,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2023-02-18 07:58:04,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2023-02-18 07:58:04,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2023-02-18 07:58:04,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2023-02-18 07:58:04,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2023-02-18 07:58:04,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2023-02-18 07:58:04,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2023-02-18 07:58:04,784 INFO L805 garLoopResultBuilder]: Registering result SAFE for location rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2023-02-18 07:58:04,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 07:58:04,989 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 [2023-02-18 07:58:04,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 07:58:05,001 INFO L899 garLoopResultBuilder]: For program point rec1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-18 07:58:05,001 INFO L899 garLoopResultBuilder]: For program point rec1FINAL(lines 11 15) no Hoare annotation was computed. [2023-02-18 07:58:05,001 INFO L899 garLoopResultBuilder]: For program point rec1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-18 07:58:05,001 INFO L899 garLoopResultBuilder]: For program point rec1EXIT(lines 11 15) no Hoare annotation was computed. [2023-02-18 07:58:05,001 INFO L899 garLoopResultBuilder]: For program point L14(line 14) no Hoare annotation was computed. [2023-02-18 07:58:05,002 INFO L899 garLoopResultBuilder]: For program point L14-1(line 14) no Hoare annotation was computed. [2023-02-18 07:58:05,002 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2023-02-18 07:58:05,002 INFO L895 garLoopResultBuilder]: At program point L14-2(line 14) the Hoare annotation is: (let ((.cse11 (+ |rec1_#in~i| 1))) (let ((.cse10 (<= .cse11 2147483647))) (let ((.cse2 (= |rec1_#in~i| rec1_~i)) (.cse5 (<= 0 (+ (- 1) rec1_~i))) (.cse6 (<= rec1_~i 2147483646)) (.cse8 (not .cse10)) (.cse4 (<= .cse11 2147483648))) (let ((.cse0 (not .cse4)) (.cse3 (<= rec1_~i 2147483647)) (.cse9 (or .cse8 (not (<= |rec1_#in~i| (- 1))))) (.cse7 (and .cse2 .cse5 .cse10 .cse6))) (and (let ((.cse1 (<= |rec1_#in~i| 2147483646))) (or .cse0 (not .cse1) (and .cse2 .cse1 .cse3 .cse4 .cse5 .cse6))) (not (<= |rec1_#in~i| 0)) (or .cse7 .cse8) .cse9 (or .cse0 (and .cse2 .cse3 .cse4 .cse5)) .cse8 (or (and .cse9 .cse8) .cse7)))))) [2023-02-18 07:58:05,002 INFO L899 garLoopResultBuilder]: For program point L14-3(line 14) no Hoare annotation was computed. [2023-02-18 07:58:05,002 INFO L899 garLoopResultBuilder]: For program point L14-4(line 14) no Hoare annotation was computed. [2023-02-18 07:58:05,003 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 15) the Hoare annotation is: (let ((.cse1 (<= |rec1_#in~i| (- 1))) (.cse2 (<= (+ |rec1_#in~i| 1) 2147483647))) (or (let ((.cse0 (not .cse2))) (and (or .cse0 (not .cse1)) .cse0)) (and .cse2 .cse1) .cse2)) [2023-02-18 07:58:05,003 INFO L899 garLoopResultBuilder]: For program point rec1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-18 07:58:05,003 INFO L899 garLoopResultBuilder]: For program point L14-5(line 14) no Hoare annotation was computed. [2023-02-18 07:58:05,003 INFO L895 garLoopResultBuilder]: At program point L14-6(line 14) the Hoare annotation is: (let ((.cse19 (+ |rec1_#in~i| 1))) (let ((.cse16 (<= 0 |rec1_#t~ret0|)) (.cse8 (<= 0 (+ (- 1) rec1_~i))) (.cse18 (<= .cse19 2147483647))) (let ((.cse12 (not .cse18)) (.cse4 (<= .cse19 2147483648)) (.cse7 (<= 0 (+ (- 1) |rec1_#t~ret0|))) (.cse1 (= |rec1_#in~i| rec1_~i)) (.cse2 (<= |rec1_#t~ret0| 2147483647)) (.cse5 (<= |rec1_#t~ret0| 1)) (.cse9 (<= |rec1_#t~ret0| 0)) (.cse6 (or (and .cse16 .cse8) .cse8)) (.cse17 (<= rec1_~i 2147483646))) (let ((.cse10 (and .cse1 .cse2 .cse5 .cse9 .cse6 .cse8 .cse18 .cse17)) (.cse11 (and .cse1 .cse2 .cse5 .cse6 .cse7 .cse8 .cse18 .cse17)) (.cse0 (not .cse4)) (.cse3 (<= rec1_~i 2147483647)) (.cse13 (or .cse12 (not (<= |rec1_#in~i| (- 1)))))) (and (or .cse0 (and .cse1 (or (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse9 .cse6 .cse8)) .cse8)) (or .cse10 .cse11 .cse12) (or (and .cse13 .cse12) .cse10 .cse11) (not (<= |rec1_#in~i| 0)) (let ((.cse14 (<= |rec1_#in~i| 2147483646))) (or .cse0 (not .cse14) (and (let ((.cse15 (or (and .cse16 .cse14 .cse8 .cse17) (and .cse14 .cse8 .cse17)))) (or (and .cse15 .cse1 .cse2 .cse3 .cse4 .cse5 .cse9 .cse8) (and .cse15 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7 .cse8))) .cse1 .cse8))) .cse13 .cse12))))) [2023-02-18 07:58:05,003 INFO L899 garLoopResultBuilder]: For program point rec1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-18 07:58:05,003 INFO L899 garLoopResultBuilder]: For program point rec1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-18 07:58:05,004 INFO L899 garLoopResultBuilder]: For program point L14-7(line 14) no Hoare annotation was computed. [2023-02-18 07:58:05,004 INFO L899 garLoopResultBuilder]: For program point rec1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 14) no Hoare annotation was computed. [2023-02-18 07:58:05,004 INFO L895 garLoopResultBuilder]: At program point L14-8(line 14) the Hoare annotation is: (let ((.cse22 (+ |rec1_#in~i| 1))) (let ((.cse19 (<= .cse22 2147483647)) (.cse12 (<= |rec1_#t~ret1| 0)) (.cse14 (<= 0 (+ (- 1) |rec1_#t~ret0|))) (.cse5 (<= |rec1_#t~ret0| 2147483647)) (.cse16 (<= |rec1_#t~ret0| 0)) (.cse17 (<= 0 |rec1_#t~ret0|)) (.cse10 (<= 0 (+ (- 1) rec1_~i)))) (let ((.cse8 (<= .cse22 2147483648)) (.cse4 (= |rec1_#in~i| rec1_~i)) (.cse6 (let ((.cse20 (let ((.cse21 (or (and .cse17 .cse10) .cse10))) (or (and .cse5 .cse21) (and .cse5 .cse16 .cse21))))) (or (and .cse12 .cse20) (and .cse12 .cse20 .cse14)))) (.cse9 (<= |rec1_#t~ret0| 1)) (.cse18 (<= rec1_~i 2147483646)) (.cse1 (not .cse19))) (let ((.cse0 (or .cse1 (not (<= |rec1_#in~i| (- 1))))) (.cse2 (and .cse4 .cse5 .cse6 .cse9 .cse10 .cse19 .cse18)) (.cse3 (not .cse8)) (.cse7 (<= rec1_~i 2147483647))) (and (or (and .cse0 .cse1) .cse2) (not (<= |rec1_#in~i| 0)) .cse0 .cse1 (or .cse1 .cse2) (or .cse3 (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10)) (let ((.cse11 (<= |rec1_#in~i| 2147483646))) (or .cse3 (not .cse11) (and .cse4 (let ((.cse13 (let ((.cse15 (or (and .cse17 .cse11 .cse10 .cse18) (and .cse11 .cse10 .cse18)))) (or (and .cse15 .cse5 .cse16) (and .cse15 .cse5))))) (or (and .cse12 .cse13 .cse14) (and .cse12 .cse13))) .cse5 .cse7 .cse8 .cse9 .cse10)))))))) [2023-02-18 07:58:05,004 INFO L899 garLoopResultBuilder]: For program point L14-9(line 14) no Hoare annotation was computed. [2023-02-18 07:58:05,004 INFO L899 garLoopResultBuilder]: For program point L14-10(line 14) no Hoare annotation was computed. [2023-02-18 07:58:05,004 INFO L899 garLoopResultBuilder]: For program point L14-11(line 14) no Hoare annotation was computed. [2023-02-18 07:58:05,004 INFO L899 garLoopResultBuilder]: For program point rec2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-18 07:58:05,005 INFO L899 garLoopResultBuilder]: For program point rec2FINAL(lines 17 21) no Hoare annotation was computed. [2023-02-18 07:58:05,005 INFO L899 garLoopResultBuilder]: For program point rec2EXIT(lines 17 21) no Hoare annotation was computed. [2023-02-18 07:58:05,005 INFO L899 garLoopResultBuilder]: For program point L20(line 20) no Hoare annotation was computed. [2023-02-18 07:58:05,005 INFO L899 garLoopResultBuilder]: For program point L20-1(line 20) no Hoare annotation was computed. [2023-02-18 07:58:05,005 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 19) no Hoare annotation was computed. [2023-02-18 07:58:05,005 INFO L895 garLoopResultBuilder]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse7 (<= |rec2_#in~j| 1)) (.cse4 (<= |rec2_#in~j| 2147483647)) (.cse8 (+ (- 1) rec2_~j))) (let ((.cse0 (not (<= |rec2_#in~j| 0))) (.cse3 (<= .cse8 2147483647)) (.cse5 (<= 0 .cse8)) (.cse6 (<= rec2_~j 2147483647)) (.cse1 (not .cse4)) (.cse2 (not .cse7))) (and .cse0 (or .cse1 .cse0 .cse2) (or .cse1 (and .cse3 .cse4 .cse5 .cse6)) (or (and .cse3 .cse4 .cse5 .cse6 (<= rec2_~j 1) .cse7) .cse1 .cse2)))) [2023-02-18 07:58:05,005 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2023-02-18 07:58:05,005 INFO L895 garLoopResultBuilder]: At program point L20-4(line 20) the Hoare annotation is: (let ((.cse11 (+ (- 1) rec2_~j)) (.cse10 (<= |rec2_#in~j| 1)) (.cse5 (<= |rec2_#in~j| 2147483647))) (let ((.cse0 (not (<= |rec2_#in~j| 0))) (.cse1 (not .cse5)) (.cse2 (not .cse10)) (.cse3 (<= |rec2_#t~ret3| 1)) (.cse4 (<= .cse11 2147483647)) (.cse9 (<= |rec2_#t~ret3| 0)) (.cse6 (<= 0 .cse11)) (.cse7 (<= |rec2_#t~ret3| 2147483647)) (.cse8 (<= rec2_~j 2147483647))) (and .cse0 (or .cse1 .cse0 .cse2) (or .cse1 (and .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse5 .cse9 .cse6 .cse8)) (or (and .cse4 .cse5 .cse9 .cse6 .cse7 .cse8) .cse1 .cse2 (and .cse3 .cse4 .cse5 .cse9 .cse6 .cse7 .cse8 (<= rec2_~j 1) .cse10))))) [2023-02-18 07:58:05,006 INFO L899 garLoopResultBuilder]: For program point L20-5(line 20) no Hoare annotation was computed. [2023-02-18 07:58:05,006 INFO L899 garLoopResultBuilder]: For program point L20-6(line 20) no Hoare annotation was computed. [2023-02-18 07:58:05,006 INFO L899 garLoopResultBuilder]: For program point L20-7(line 20) no Hoare annotation was computed. [2023-02-18 07:58:05,006 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 21) the Hoare annotation is: true [2023-02-18 07:58:05,006 INFO L899 garLoopResultBuilder]: For program point rec2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-18 07:58:05,006 INFO L899 garLoopResultBuilder]: For program point rec2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-18 07:58:05,006 INFO L899 garLoopResultBuilder]: For program point rec2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-02-18 07:58:05,006 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 07:58:05,006 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 07:58:05,007 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 07:58:05,007 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 07:58:05,007 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (<= |ULTIMATE.start_main_~x~0#1| 2147483647) [2023-02-18 07:58:05,007 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-02-18 07:58:05,007 INFO L899 garLoopResultBuilder]: For program point L23(lines 23 26) no Hoare annotation was computed. [2023-02-18 07:58:05,009 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 07:58:05,011 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 07:58:05,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 07:58:05 BoogieIcfgContainer [2023-02-18 07:58:05,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 07:58:05,013 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 07:58:05,013 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 07:58:05,013 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 07:58:05,014 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 07:58:00" (3/4) ... [2023-02-18 07:58:05,016 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 07:58:05,020 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec1 [2023-02-18 07:58:05,020 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure rec2 [2023-02-18 07:58:05,022 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-02-18 07:58:05,023 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-02-18 07:58:05,023 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 07:58:05,043 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 07:58:05,044 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 07:58:05,044 INFO L158 Benchmark]: Toolchain (without parser) took 5145.44ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 121.8MB in the beginning and 127.6MB in the end (delta: -5.8MB). Peak memory consumption was 26.5MB. Max. memory is 16.1GB. [2023-02-18 07:58:05,044 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 07:58:05,044 INFO L158 Benchmark]: CACSL2BoogieTranslator took 129.97ms. Allocated memory is still 161.5MB. Free memory was 121.6MB in the beginning and 112.5MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-18 07:58:05,045 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.52ms. Allocated memory is still 161.5MB. Free memory was 112.5MB in the beginning and 111.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 07:58:05,045 INFO L158 Benchmark]: Boogie Preprocessor took 13.42ms. Allocated memory is still 161.5MB. Free memory was 111.2MB in the beginning and 110.4MB in the end (delta: 848.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 07:58:05,045 INFO L158 Benchmark]: RCFGBuilder took 214.02ms. Allocated memory is still 161.5MB. Free memory was 110.2MB in the beginning and 100.5MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 07:58:05,045 INFO L158 Benchmark]: TraceAbstraction took 4733.29ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 99.8MB in the beginning and 129.7MB in the end (delta: -29.9MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2023-02-18 07:58:05,045 INFO L158 Benchmark]: Witness Printer took 30.41ms. Allocated memory is still 195.0MB. Free memory was 129.7MB in the beginning and 127.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 07:58:05,046 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 109.1MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 129.97ms. Allocated memory is still 161.5MB. Free memory was 121.6MB in the beginning and 112.5MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.52ms. Allocated memory is still 161.5MB. Free memory was 112.5MB in the beginning and 111.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 13.42ms. Allocated memory is still 161.5MB. Free memory was 111.2MB in the beginning and 110.4MB in the end (delta: 848.6kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 214.02ms. Allocated memory is still 161.5MB. Free memory was 110.2MB in the beginning and 100.5MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4733.29ms. Allocated memory was 161.5MB in the beginning and 195.0MB in the end (delta: 33.6MB). Free memory was 99.8MB in the beginning and 129.7MB in the end (delta: -29.9MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. * Witness Printer took 30.41ms. Allocated memory is still 195.0MB. Free memory was 129.7MB in the beginning and 127.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 4.6s, OverallIterations: 20, TraceHistogramMax: 28, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 309 SdHoareTripleChecker+Valid, 0.5s 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, 1107 SyntacticMatches, 20 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.4s 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, 1424 HoareAnnotationTreeSize, 257 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1422 NumberOfCodeBlocks, 1422 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1806 ConstructedInterpolants, 0 QuantifiedInterpolants, 2726 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! [2023-02-18 07:58:05,058 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE