./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-numeric/rec_counter3.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e8d55036 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-numeric/rec_counter3.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 d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 23:01:26,874 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 23:01:26,876 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 23:01:26,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 23:01:26,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 23:01:26,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 23:01:26,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 23:01:26,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 23:01:26,904 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 23:01:26,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 23:01:26,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 23:01:26,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 23:01:26,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 23:01:26,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 23:01:26,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 23:01:26,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 23:01:26,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 23:01:26,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 23:01:26,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 23:01:26,919 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 23:01:26,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 23:01:26,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 23:01:26,923 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 23:01:26,923 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 23:01:26,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 23:01:26,928 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 23:01:26,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 23:01:26,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 23:01:26,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 23:01:26,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 23:01:26,930 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 23:01:26,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 23:01:26,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 23:01:26,932 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 23:01:26,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 23:01:26,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 23:01:26,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 23:01:26,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 23:01:26,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 23:01:26,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 23:01:26,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 23:01:26,937 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-15 23:01:26,964 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 23:01:26,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 23:01:26,965 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 23:01:26,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 23:01:26,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 23:01:26,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 23:01:26,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 23:01:26,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 23:01:26,968 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 23:01:26,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 23:01:26,968 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 23:01:26,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 23:01:26,969 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 23:01:26,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 23:01:26,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 23:01:26,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 23:01:26,969 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-15 23:01:26,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 23:01:26,969 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 23:01:26,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 23:01:26,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 23:01:26,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 23:01:26,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 23:01:26,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 23:01:26,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 23:01:26,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 23:01:26,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 23:01:26,971 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 23:01:26,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 23:01:26,971 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 23:01:26,971 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 23:01:26,972 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 23:01:26,972 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 23:01:26,972 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 23:01:26,972 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d7b4f33979632a981e739ff06b52fe01aa9fb175d5e5193b145052887f22f8a3 [2023-02-15 23:01:27,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 23:01:27,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 23:01:27,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 23:01:27,186 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 23:01:27,186 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 23:01:27,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-numeric/rec_counter3.c [2023-02-15 23:01:28,171 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 23:01:28,323 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 23:01:28,323 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-numeric/rec_counter3.c [2023-02-15 23:01:28,329 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd809e2aa/13c4e53fc85349e9a16664cc4a42a2da/FLAGb8a1abc39 [2023-02-15 23:01:28,344 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd809e2aa/13c4e53fc85349e9a16664cc4a42a2da [2023-02-15 23:01:28,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 23:01:28,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 23:01:28,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 23:01:28,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 23:01:28,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 23:01:28,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:01:28" (1/1) ... [2023-02-15 23:01:28,354 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d7d848f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:28, skipping insertion in model container [2023-02-15 23:01:28,354 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 11:01:28" (1/1) ... [2023-02-15 23:01:28,359 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 23:01:28,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 23:01:28,457 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:01:28,460 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 23:01:28,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 23:01:28,475 INFO L208 MainTranslator]: Completed translation [2023-02-15 23:01:28,475 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:28 WrapperNode [2023-02-15 23:01:28,476 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 23:01:28,476 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 23:01:28,476 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 23:01:28,477 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 23:01:28,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:28" (1/1) ... [2023-02-15 23:01:28,484 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:28" (1/1) ... [2023-02-15 23:01:28,493 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 16 [2023-02-15 23:01:28,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 23:01:28,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 23:01:28,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 23:01:28,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 23:01:28,500 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:28" (1/1) ... [2023-02-15 23:01:28,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:28" (1/1) ... [2023-02-15 23:01:28,501 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:28" (1/1) ... [2023-02-15 23:01:28,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:28" (1/1) ... [2023-02-15 23:01:28,503 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:28" (1/1) ... [2023-02-15 23:01:28,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:28" (1/1) ... [2023-02-15 23:01:28,506 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:28" (1/1) ... [2023-02-15 23:01:28,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:28" (1/1) ... [2023-02-15 23:01:28,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 23:01:28,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 23:01:28,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 23:01:28,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 23:01:28,509 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:28" (1/1) ... [2023-02-15 23:01:28,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 23:01:28,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:28,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 23:01:28,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 23:01:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2023-02-15 23:01:28,553 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2023-02-15 23:01:28,554 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 23:01:28,554 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 23:01:28,587 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 23:01:28,589 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 23:01:28,666 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 23:01:28,671 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 23:01:28,671 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 23:01:28,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:01:28 BoogieIcfgContainer [2023-02-15 23:01:28,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 23:01:28,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 23:01:28,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 23:01:28,676 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 23:01:28,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 11:01:28" (1/3) ... [2023-02-15 23:01:28,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fa8aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:01:28, skipping insertion in model container [2023-02-15 23:01:28,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 11:01:28" (2/3) ... [2023-02-15 23:01:28,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fa8aab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 11:01:28, skipping insertion in model container [2023-02-15 23:01:28,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 11:01:28" (3/3) ... [2023-02-15 23:01:28,697 INFO L112 eAbstractionObserver]: Analyzing ICFG rec_counter3.c [2023-02-15 23:01:28,709 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 23:01:28,709 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-15 23:01:28,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 23:01:28,760 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;@33076479, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 23:01:28,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-15 23:01:28,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 23:01:28,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 23:01:28,767 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:28,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:28,772 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:28,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:28,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1089293515, now seen corresponding path program 1 times [2023-02-15 23:01:28,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:28,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193427374] [2023-02-15 23:01:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:28,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:01:28,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:28,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193427374] [2023-02-15 23:01:28,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193427374] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:01:28,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:01:28,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 23:01:28,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077146310] [2023-02-15 23:01:28,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:01:28,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 23:01:28,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:28,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 23:01:28,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 23:01:29,000 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:01:29,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:29,092 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2023-02-15 23:01:29,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 23:01:29,096 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-15 23:01:29,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:29,100 INFO L225 Difference]: With dead ends: 67 [2023-02-15 23:01:29,100 INFO L226 Difference]: Without dead ends: 39 [2023-02-15 23:01:29,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 23:01:29,104 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 37 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:29,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 104 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:01:29,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-15 23:01:29,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2023-02-15 23:01:29,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 29 states have internal predecessors, (37), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 23:01:29,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2023-02-15 23:01:29,128 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 7 [2023-02-15 23:01:29,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:29,128 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2023-02-15 23:01:29,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:01:29,129 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2023-02-15 23:01:29,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 23:01:29,129 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:29,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:29,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 23:01:29,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:29,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:29,130 INFO L85 PathProgramCache]: Analyzing trace with hash -591639365, now seen corresponding path program 1 times [2023-02-15 23:01:29,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:29,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710993623] [2023-02-15 23:01:29,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:29,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:29,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:01:29,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:29,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710993623] [2023-02-15 23:01:29,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710993623] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:01:29,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:01:29,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 23:01:29,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858752979] [2023-02-15 23:01:29,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:01:29,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 23:01:29,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:29,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 23:01:29,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 23:01:29,167 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:01:29,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:29,194 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-02-15 23:01:29,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 23:01:29,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-15 23:01:29,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:29,196 INFO L225 Difference]: With dead ends: 34 [2023-02-15 23:01:29,196 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 23:01:29,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 23:01:29,197 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 33 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:29,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 33 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:01:29,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 23:01:29,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-02-15 23:01:29,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 23:01:29,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2023-02-15 23:01:29,203 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 8 [2023-02-15 23:01:29,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:29,203 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2023-02-15 23:01:29,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:01:29,203 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2023-02-15 23:01:29,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 23:01:29,204 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:29,204 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:29,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 23:01:29,204 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:29,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:29,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1479083013, now seen corresponding path program 1 times [2023-02-15 23:01:29,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:29,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221838378] [2023-02-15 23:01:29,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:29,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:01:29,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:29,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221838378] [2023-02-15 23:01:29,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221838378] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:29,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191891136] [2023-02-15 23:01:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:29,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:29,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:29,263 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:29,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 23:01:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 23:01:29,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:29,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:01:29,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:29,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 23:01:29,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191891136] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:29,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:29,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-15 23:01:29,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220567330] [2023-02-15 23:01:29,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:29,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 23:01:29,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:29,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 23:01:29,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-15 23:01:29,385 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:01:29,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:29,486 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2023-02-15 23:01:29,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-15 23:01:29,486 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-15 23:01:29,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:29,488 INFO L225 Difference]: With dead ends: 39 [2023-02-15 23:01:29,489 INFO L226 Difference]: Without dead ends: 38 [2023-02-15 23:01:29,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-02-15 23:01:29,493 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 138 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:29,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 72 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:01:29,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-15 23:01:29,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2023-02-15 23:01:29,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.4166666666666667) internal successors, (34), 27 states have internal predecessors, (34), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 23:01:29,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2023-02-15 23:01:29,506 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 12 [2023-02-15 23:01:29,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:29,507 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2023-02-15 23:01:29,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 23:01:29,507 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2023-02-15 23:01:29,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 23:01:29,508 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:29,508 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:29,515 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 23:01:29,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:29,713 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting recErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:29,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:29,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1411454171, now seen corresponding path program 1 times [2023-02-15 23:01:29,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:29,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521723400] [2023-02-15 23:01:29,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:29,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 23:01:29,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:29,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521723400] [2023-02-15 23:01:29,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521723400] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:01:29,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:01:29,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 23:01:29,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683390404] [2023-02-15 23:01:29,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:01:29,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 23:01:29,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:29,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 23:01:29,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 23:01:29,747 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:01:29,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:29,755 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2023-02-15 23:01:29,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 23:01:29,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-15 23:01:29,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:29,757 INFO L225 Difference]: With dead ends: 34 [2023-02-15 23:01:29,758 INFO L226 Difference]: Without dead ends: 33 [2023-02-15 23:01:29,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 23:01:29,759 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 9 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:29,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 34 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:01:29,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-15 23:01:29,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2023-02-15 23:01:29,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 26 states have internal predecessors, (32), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 23:01:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2023-02-15 23:01:29,771 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 16 [2023-02-15 23:01:29,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:29,771 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2023-02-15 23:01:29,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:01:29,772 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2023-02-15 23:01:29,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 23:01:29,772 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:29,773 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:29,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 23:01:29,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:29,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:29,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1411454226, now seen corresponding path program 1 times [2023-02-15 23:01:29,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:29,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567092246] [2023-02-15 23:01:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:29,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:29,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 23:01:29,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:29,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567092246] [2023-02-15 23:01:29,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567092246] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:01:29,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:01:29,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 23:01:29,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064859144] [2023-02-15 23:01:29,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:01:29,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 23:01:29,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:29,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 23:01:29,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 23:01:29,801 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:01:29,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:29,807 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2023-02-15 23:01:29,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 23:01:29,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-02-15 23:01:29,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:29,808 INFO L225 Difference]: With dead ends: 31 [2023-02-15 23:01:29,808 INFO L226 Difference]: Without dead ends: 30 [2023-02-15 23:01:29,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 23:01:29,809 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:29,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 35 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:01:29,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-15 23:01:29,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2023-02-15 23:01:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 24 states have (on average 1.25) internal successors, (30), 25 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 23:01:29,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2023-02-15 23:01:29,828 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 16 [2023-02-15 23:01:29,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:29,829 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2023-02-15 23:01:29,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:01:29,829 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2023-02-15 23:01:29,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 23:01:29,830 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:29,830 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:29,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 23:01:29,830 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:29,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:29,831 INFO L85 PathProgramCache]: Analyzing trace with hash 805406401, now seen corresponding path program 1 times [2023-02-15 23:01:29,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:29,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065166690] [2023-02-15 23:01:29,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:29,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 23:01:29,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:29,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065166690] [2023-02-15 23:01:29,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065166690] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:01:29,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:01:29,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 23:01:29,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615659741] [2023-02-15 23:01:29,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:01:29,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 23:01:29,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:29,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 23:01:29,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 23:01:29,899 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:01:29,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:29,924 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2023-02-15 23:01:29,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 23:01:29,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-15 23:01:29,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:29,925 INFO L225 Difference]: With dead ends: 44 [2023-02-15 23:01:29,925 INFO L226 Difference]: Without dead ends: 41 [2023-02-15 23:01:29,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-15 23:01:29,932 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 9 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:29,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 51 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:01:29,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2023-02-15 23:01:29,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 34. [2023-02-15 23:01:29,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 23:01:29,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2023-02-15 23:01:29,938 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 17 [2023-02-15 23:01:29,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:29,938 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2023-02-15 23:01:29,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:01:29,938 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2023-02-15 23:01:29,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-15 23:01:29,939 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:29,939 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:29,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 23:01:29,940 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:29,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:29,940 INFO L85 PathProgramCache]: Analyzing trace with hash 805408099, now seen corresponding path program 1 times [2023-02-15 23:01:29,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:29,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154488127] [2023-02-15 23:01:29,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:29,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:29,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 23:01:30,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:30,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154488127] [2023-02-15 23:01:30,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154488127] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:01:30,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 23:01:30,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 23:01:30,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906160327] [2023-02-15 23:01:30,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:01:30,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 23:01:30,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:30,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 23:01:30,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 23:01:30,022 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:01:30,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:30,078 INFO L93 Difference]: Finished difference Result 60 states and 73 transitions. [2023-02-15 23:01:30,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 23:01:30,079 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-02-15 23:01:30,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:30,081 INFO L225 Difference]: With dead ends: 60 [2023-02-15 23:01:30,081 INFO L226 Difference]: Without dead ends: 38 [2023-02-15 23:01:30,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-02-15 23:01:30,083 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 22 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:30,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 50 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:01:30,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2023-02-15 23:01:30,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2023-02-15 23:01:30,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 32 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 23:01:30,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2023-02-15 23:01:30,095 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 17 [2023-02-15 23:01:30,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:30,095 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2023-02-15 23:01:30,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 23:01:30,096 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2023-02-15 23:01:30,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-15 23:01:30,096 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:30,096 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:30,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 23:01:30,097 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting recErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:30,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:30,097 INFO L85 PathProgramCache]: Analyzing trace with hash 842415392, now seen corresponding path program 1 times [2023-02-15 23:01:30,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:30,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001860412] [2023-02-15 23:01:30,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:30,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:30,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,250 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 23:01:30,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:30,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001860412] [2023-02-15 23:01:30,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001860412] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:30,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058600002] [2023-02-15 23:01:30,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:30,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:30,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:30,257 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:30,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 23:01:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 23:01:30,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-15 23:01:30,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 23:01:30,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058600002] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 23:01:30,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 23:01:30,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2023-02-15 23:01:30,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189644264] [2023-02-15 23:01:30,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 23:01:30,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 23:01:30,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:30,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 23:01:30,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-02-15 23:01:30,351 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 23:01:30,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:30,377 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2023-02-15 23:01:30,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 23:01:30,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2023-02-15 23:01:30,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:30,377 INFO L225 Difference]: With dead ends: 38 [2023-02-15 23:01:30,377 INFO L226 Difference]: Without dead ends: 37 [2023-02-15 23:01:30,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-02-15 23:01:30,379 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:30,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 73 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 23:01:30,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-15 23:01:30,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-15 23:01:30,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.1612903225806452) internal successors, (36), 31 states have internal predecessors, (36), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 23:01:30,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2023-02-15 23:01:30,391 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 28 [2023-02-15 23:01:30,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:30,391 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2023-02-15 23:01:30,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 23:01:30,391 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2023-02-15 23:01:30,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 23:01:30,393 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:30,394 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:30,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:30,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-15 23:01:30,601 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:30,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:30,601 INFO L85 PathProgramCache]: Analyzing trace with hash 903079569, now seen corresponding path program 1 times [2023-02-15 23:01:30,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:30,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566099428] [2023-02-15 23:01:30,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:30,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-15 23:01:30,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:30,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566099428] [2023-02-15 23:01:30,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566099428] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:30,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711536592] [2023-02-15 23:01:30,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:30,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:30,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:30,696 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:30,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 23:01:30,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:30,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 23:01:30,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:30,765 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 23:01:30,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 23:01:30,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711536592] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:30,872 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:30,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 15 [2023-02-15 23:01:30,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482488079] [2023-02-15 23:01:30,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:30,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 23:01:30,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:30,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 23:01:30,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-02-15 23:01:30,873 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 13 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 23:01:31,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:31,073 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2023-02-15 23:01:31,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-15 23:01:31,074 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 13 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 31 [2023-02-15 23:01:31,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:31,075 INFO L225 Difference]: With dead ends: 82 [2023-02-15 23:01:31,075 INFO L226 Difference]: Without dead ends: 65 [2023-02-15 23:01:31,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=218, Invalid=774, Unknown=0, NotChecked=0, Total=992 [2023-02-15 23:01:31,076 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 79 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:31,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 72 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:01:31,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-02-15 23:01:31,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 55. [2023-02-15 23:01:31,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 47 states have internal predecessors, (56), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 23:01:31,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2023-02-15 23:01:31,080 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 31 [2023-02-15 23:01:31,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:31,080 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2023-02-15 23:01:31,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 13 states have internal predecessors, (40), 1 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-15 23:01:31,080 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2023-02-15 23:01:31,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-02-15 23:01:31,085 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:31,086 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:31,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:31,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:31,291 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:31,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:31,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1418458607, now seen corresponding path program 2 times [2023-02-15 23:01:31,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:31,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700669888] [2023-02-15 23:01:31,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:31,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:31,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:31,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:31,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:31,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:31,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 38 proven. 19 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-02-15 23:01:31,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:31,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700669888] [2023-02-15 23:01:31,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700669888] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:31,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754772695] [2023-02-15 23:01:31,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:01:31,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:31,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:31,485 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:31,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 23:01:31,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:01:31,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:31,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 23:01:31,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:31,562 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 43 proven. 8 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-02-15 23:01:31,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:31,663 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 44 proven. 7 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-02-15 23:01:31,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754772695] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:31,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:31,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 16 [2023-02-15 23:01:31,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604010033] [2023-02-15 23:01:31,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:31,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 23:01:31,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:31,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 23:01:31,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2023-02-15 23:01:31,678 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 16 states, 16 states have (on average 2.9375) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 23:01:31,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:31,862 INFO L93 Difference]: Finished difference Result 103 states and 123 transitions. [2023-02-15 23:01:31,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 23:01:31,863 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 59 [2023-02-15 23:01:31,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:31,863 INFO L225 Difference]: With dead ends: 103 [2023-02-15 23:01:31,863 INFO L226 Difference]: Without dead ends: 66 [2023-02-15 23:01:31,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 120 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=681, Unknown=0, NotChecked=0, Total=812 [2023-02-15 23:01:31,864 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 49 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:31,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 108 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:01:31,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-02-15 23:01:31,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2023-02-15 23:01:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 56 states have (on average 1.1071428571428572) internal successors, (62), 56 states have internal predecessors, (62), 3 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (5), 5 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 23:01:31,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 70 transitions. [2023-02-15 23:01:31,874 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 70 transitions. Word has length 59 [2023-02-15 23:01:31,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:31,874 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 70 transitions. [2023-02-15 23:01:31,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.9375) internal successors, (47), 13 states have internal predecessors, (47), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 23:01:31,874 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 70 transitions. [2023-02-15 23:01:31,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-02-15 23:01:31,877 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:31,877 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:31,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-15 23:01:32,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:32,083 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:32,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:32,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1530312919, now seen corresponding path program 3 times [2023-02-15 23:01:32,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:32,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602173755] [2023-02-15 23:01:32,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:32,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:32,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 23:01:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:32,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:32,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:32,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:32,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:32,310 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 6 proven. 75 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2023-02-15 23:01:32,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:32,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602173755] [2023-02-15 23:01:32,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602173755] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:32,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925337053] [2023-02-15 23:01:32,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 23:01:32,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:32,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:32,312 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:32,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 23:01:32,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-15 23:01:32,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:32,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 23:01:32,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:32,417 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-02-15 23:01:32,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 36 proven. 5 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2023-02-15 23:01:32,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925337053] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:32,587 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:32,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7, 7] total 25 [2023-02-15 23:01:32,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473717216] [2023-02-15 23:01:32,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:32,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-15 23:01:32,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:32,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-15 23:01:32,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=533, Unknown=0, NotChecked=0, Total=650 [2023-02-15 23:01:32,590 INFO L87 Difference]: Start difference. First operand 64 states and 70 transitions. Second operand has 26 states, 25 states have (on average 2.64) internal successors, (66), 22 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 23:01:32,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:32,996 INFO L93 Difference]: Finished difference Result 121 states and 141 transitions. [2023-02-15 23:01:32,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-02-15 23:01:32,996 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 22 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 75 [2023-02-15 23:01:32,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:32,997 INFO L225 Difference]: With dead ends: 121 [2023-02-15 23:01:32,997 INFO L226 Difference]: Without dead ends: 103 [2023-02-15 23:01:32,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1062 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=754, Invalid=2668, Unknown=0, NotChecked=0, Total=3422 [2023-02-15 23:01:32,999 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 182 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:32,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 76 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:01:32,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-02-15 23:01:33,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 97. [2023-02-15 23:01:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 88 states have (on average 1.125) internal successors, (99), 88 states have internal predecessors, (99), 3 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (6), 6 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-15 23:01:33,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2023-02-15 23:01:33,004 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 75 [2023-02-15 23:01:33,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:33,005 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2023-02-15 23:01:33,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.64) internal successors, (66), 22 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 23:01:33,005 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2023-02-15 23:01:33,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-02-15 23:01:33,006 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:33,006 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 8, 7, 7, 7, 7, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:33,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:33,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-15 23:01:33,210 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:33,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:33,210 INFO L85 PathProgramCache]: Analyzing trace with hash 256509070, now seen corresponding path program 4 times [2023-02-15 23:01:33,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:33,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925851095] [2023-02-15 23:01:33,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:33,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:33,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 23:01:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:33,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:33,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:33,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:33,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:33,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:33,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:33,491 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 7 proven. 227 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2023-02-15 23:01:33,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:33,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925851095] [2023-02-15 23:01:33,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925851095] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:33,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088806019] [2023-02-15 23:01:33,491 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 23:01:33,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:33,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:33,493 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:33,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 23:01:33,539 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 23:01:33,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:33,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 23:01:33,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:33,620 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 12 proven. 215 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-02-15 23:01:33,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:34,169 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 12 proven. 215 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2023-02-15 23:01:34,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088806019] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:34,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:34,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15, 15] total 33 [2023-02-15 23:01:34,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872109876] [2023-02-15 23:01:34,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:34,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-02-15 23:01:34,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:34,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-02-15 23:01:34,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=922, Unknown=0, NotChecked=0, Total=1122 [2023-02-15 23:01:34,172 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand has 34 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 25 states have internal predecessors, (88), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 23:01:34,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:34,623 INFO L93 Difference]: Finished difference Result 402 states and 459 transitions. [2023-02-15 23:01:34,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-02-15 23:01:34,623 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 25 states have internal predecessors, (88), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 104 [2023-02-15 23:01:34,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:34,625 INFO L225 Difference]: With dead ends: 402 [2023-02-15 23:01:34,625 INFO L226 Difference]: Without dead ends: 306 [2023-02-15 23:01:34,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2053 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=938, Invalid=4612, Unknown=0, NotChecked=0, Total=5550 [2023-02-15 23:01:34,628 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 186 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:34,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 137 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:01:34,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2023-02-15 23:01:34,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 157. [2023-02-15 23:01:34,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 143 states have (on average 1.1118881118881119) internal successors, (159), 143 states have internal predecessors, (159), 3 states have call successors, (3), 2 states have call predecessors, (3), 10 states have return successors, (11), 11 states have call predecessors, (11), 2 states have call successors, (11) [2023-02-15 23:01:34,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 173 transitions. [2023-02-15 23:01:34,645 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 173 transitions. Word has length 104 [2023-02-15 23:01:34,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:34,646 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 173 transitions. [2023-02-15 23:01:34,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.6666666666666665) internal successors, (88), 25 states have internal predecessors, (88), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 23:01:34,646 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 173 transitions. [2023-02-15 23:01:34,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2023-02-15 23:01:34,650 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:34,650 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 21, 13, 12, 12, 12, 12, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:34,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:34,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:34,854 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:34,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:34,855 INFO L85 PathProgramCache]: Analyzing trace with hash -2027584061, now seen corresponding path program 5 times [2023-02-15 23:01:34,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:34,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824228155] [2023-02-15 23:01:34,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:34,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:34,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 23:01:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:35,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:35,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:35,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:35,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:35,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:35,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:35,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:35,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:35,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:35,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:35,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:35,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:35,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1464 backedges. 704 proven. 26 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2023-02-15 23:01:35,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:35,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824228155] [2023-02-15 23:01:35,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824228155] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:35,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053364192] [2023-02-15 23:01:35,275 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 23:01:35,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:35,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:35,276 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:35,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 23:01:35,327 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-02-15 23:01:35,327 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:35,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 23:01:35,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:35,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1464 backedges. 512 proven. 26 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2023-02-15 23:01:35,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:35,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1464 backedges. 516 proven. 22 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2023-02-15 23:01:35,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053364192] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:35,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:35,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 16 [2023-02-15 23:01:35,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49238692] [2023-02-15 23:01:35,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:35,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 23:01:35,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:35,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 23:01:35,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-02-15 23:01:35,783 INFO L87 Difference]: Start difference. First operand 157 states and 173 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 23:01:35,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:35,933 INFO L93 Difference]: Finished difference Result 305 states and 341 transitions. [2023-02-15 23:01:35,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-15 23:01:35,934 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 189 [2023-02-15 23:01:35,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:35,935 INFO L225 Difference]: With dead ends: 305 [2023-02-15 23:01:35,935 INFO L226 Difference]: Without dead ends: 187 [2023-02-15 23:01:35,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 390 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2023-02-15 23:01:35,936 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 27 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:35,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 157 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 23:01:35,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-02-15 23:01:35,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 183. [2023-02-15 23:01:35,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 168 states have (on average 1.0892857142857142) internal successors, (183), 168 states have internal predecessors, (183), 3 states have call successors, (3), 2 states have call predecessors, (3), 11 states have return successors, (12), 12 states have call predecessors, (12), 2 states have call successors, (12) [2023-02-15 23:01:35,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 198 transitions. [2023-02-15 23:01:35,953 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 198 transitions. Word has length 189 [2023-02-15 23:01:35,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:35,953 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 198 transitions. [2023-02-15 23:01:35,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 23:01:35,953 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 198 transitions. [2023-02-15 23:01:35,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2023-02-15 23:01:35,954 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:35,954 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 26, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:35,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:36,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:36,158 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:36,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:36,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1610573368, now seen corresponding path program 6 times [2023-02-15 23:01:36,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:36,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96104947] [2023-02-15 23:01:36,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:36,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:36,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:36,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:36,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1750 backedges. 848 proven. 53 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2023-02-15 23:01:36,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:36,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96104947] [2023-02-15 23:01:36,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96104947] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:36,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148260423] [2023-02-15 23:01:36,591 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 23:01:36,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:36,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:36,592 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:36,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 23:01:36,662 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-15 23:01:36,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:36,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 23:01:36,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 1750 backedges. 607 proven. 68 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2023-02-15 23:01:36,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:37,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1750 backedges. 607 proven. 68 refuted. 0 times theorem prover too weak. 1075 trivial. 0 not checked. [2023-02-15 23:01:37,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148260423] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:37,196 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:37,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 12] total 39 [2023-02-15 23:01:37,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466334626] [2023-02-15 23:01:37,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:37,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-02-15 23:01:37,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:37,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-02-15 23:01:37,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1306, Unknown=0, NotChecked=0, Total=1482 [2023-02-15 23:01:37,199 INFO L87 Difference]: Start difference. First operand 183 states and 198 transitions. Second operand has 39 states, 39 states have (on average 2.358974358974359) internal successors, (92), 36 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 23:01:38,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:38,535 INFO L93 Difference]: Finished difference Result 753 states and 863 transitions. [2023-02-15 23:01:38,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-02-15 23:01:38,536 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 2.358974358974359) internal successors, (92), 36 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 194 [2023-02-15 23:01:38,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:38,538 INFO L225 Difference]: With dead ends: 753 [2023-02-15 23:01:38,538 INFO L226 Difference]: Without dead ends: 593 [2023-02-15 23:01:38,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2341 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1535, Invalid=8167, Unknown=0, NotChecked=0, Total=9702 [2023-02-15 23:01:38,550 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 340 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:38,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 292 Invalid, 586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:01:38,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2023-02-15 23:01:38,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 245. [2023-02-15 23:01:38,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 228 states have (on average 1.0921052631578947) internal successors, (249), 228 states have internal predecessors, (249), 3 states have call successors, (3), 2 states have call predecessors, (3), 13 states have return successors, (14), 14 states have call predecessors, (14), 2 states have call successors, (14) [2023-02-15 23:01:38,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 266 transitions. [2023-02-15 23:01:38,569 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 266 transitions. Word has length 194 [2023-02-15 23:01:38,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:38,570 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 266 transitions. [2023-02-15 23:01:38,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 2.358974358974359) internal successors, (92), 36 states have internal predecessors, (92), 1 states have call successors, (2), 1 states have call predecessors, (2), 5 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 23:01:38,570 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 266 transitions. [2023-02-15 23:01:38,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2023-02-15 23:01:38,571 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:38,571 INFO L195 NwaCegarLoop]: trace histogram [36, 36, 36, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:38,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-15 23:01:38,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-02-15 23:01:38,776 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:38,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:38,777 INFO L85 PathProgramCache]: Analyzing trace with hash 521485860, now seen corresponding path program 7 times [2023-02-15 23:01:38,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:38,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492663699] [2023-02-15 23:01:38,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:38,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:38,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:39,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:39,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:39,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:39,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:39,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:39,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:39,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:39,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:39,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:39,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:39,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2765 backedges. 1655 proven. 89 refuted. 0 times theorem prover too weak. 1021 trivial. 0 not checked. [2023-02-15 23:01:39,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:39,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492663699] [2023-02-15 23:01:39,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492663699] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:39,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942748805] [2023-02-15 23:01:39,427 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 23:01:39,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:39,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:39,428 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:39,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 23:01:39,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:39,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 23:01:39,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:39,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2765 backedges. 1468 proven. 185 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2023-02-15 23:01:39,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:40,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2765 backedges. 1481 proven. 172 refuted. 0 times theorem prover too weak. 1112 trivial. 0 not checked. [2023-02-15 23:01:40,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942748805] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:40,921 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:40,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 24, 24] total 31 [2023-02-15 23:01:40,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163811267] [2023-02-15 23:01:40,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:40,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-15 23:01:40,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:40,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-15 23:01:40,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=820, Unknown=0, NotChecked=0, Total=930 [2023-02-15 23:01:40,922 INFO L87 Difference]: Start difference. First operand 245 states and 266 transitions. Second operand has 31 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 27 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 23:01:41,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:41,714 INFO L93 Difference]: Finished difference Result 503 states and 548 transitions. [2023-02-15 23:01:41,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-02-15 23:01:41,714 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 27 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) Word has length 224 [2023-02-15 23:01:41,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:41,715 INFO L225 Difference]: With dead ends: 503 [2023-02-15 23:01:41,716 INFO L226 Difference]: Without dead ends: 331 [2023-02-15 23:01:41,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 525 GetRequests, 440 SyntacticMatches, 21 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1210 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=734, Invalid=3556, Unknown=0, NotChecked=0, Total=4290 [2023-02-15 23:01:41,720 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 48 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:41,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 343 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 23:01:41,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2023-02-15 23:01:41,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 301. [2023-02-15 23:01:41,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 281 states have (on average 1.0782918149466192) internal successors, (303), 281 states have internal predecessors, (303), 3 states have call successors, (3), 2 states have call predecessors, (3), 16 states have return successors, (17), 17 states have call predecessors, (17), 2 states have call successors, (17) [2023-02-15 23:01:41,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 323 transitions. [2023-02-15 23:01:41,749 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 323 transitions. Word has length 224 [2023-02-15 23:01:41,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:41,749 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 323 transitions. [2023-02-15 23:01:41,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6774193548387095) internal successors, (83), 27 states have internal predecessors, (83), 1 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (6), 6 states have call predecessors, (6), 1 states have call successors, (6) [2023-02-15 23:01:41,749 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 323 transitions. [2023-02-15 23:01:41,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2023-02-15 23:01:41,751 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:41,751 INFO L195 NwaCegarLoop]: trace histogram [39, 39, 39, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:41,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:41,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-15 23:01:41,955 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:41,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:41,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1549594959, now seen corresponding path program 8 times [2023-02-15 23:01:41,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:41,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168310296] [2023-02-15 23:01:41,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:41,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:41,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:42,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:01:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:42,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:42,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:42,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:42,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:42,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:42,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:42,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:42,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:42,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:42,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:42,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3128 backedges. 1925 proven. 134 refuted. 0 times theorem prover too weak. 1069 trivial. 0 not checked. [2023-02-15 23:01:42,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:42,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168310296] [2023-02-15 23:01:42,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168310296] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:42,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489518658] [2023-02-15 23:01:42,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:01:42,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:42,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:42,733 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:42,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 23:01:42,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:01:42,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:42,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-15 23:01:42,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:43,085 INFO L134 CoverageAnalysis]: Checked inductivity of 3128 backedges. 1888 proven. 324 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2023-02-15 23:01:43,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:44,757 INFO L134 CoverageAnalysis]: Checked inductivity of 3128 backedges. 1907 proven. 305 refuted. 0 times theorem prover too weak. 916 trivial. 0 not checked. [2023-02-15 23:01:44,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489518658] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:44,757 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:44,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 29, 29] total 38 [2023-02-15 23:01:44,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156761427] [2023-02-15 23:01:44,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:44,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-02-15 23:01:44,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:44,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-02-15 23:01:44,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1252, Unknown=0, NotChecked=0, Total=1406 [2023-02-15 23:01:44,760 INFO L87 Difference]: Start difference. First operand 301 states and 323 transitions. Second operand has 38 states, 38 states have (on average 2.5526315789473686) internal successors, (97), 33 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-15 23:01:45,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:45,930 INFO L93 Difference]: Finished difference Result 620 states and 665 transitions. [2023-02-15 23:01:45,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-02-15 23:01:45,931 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.5526315789473686) internal successors, (97), 33 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 233 [2023-02-15 23:01:45,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:45,932 INFO L225 Difference]: With dead ends: 620 [2023-02-15 23:01:45,933 INFO L226 Difference]: Without dead ends: 433 [2023-02-15 23:01:45,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 450 SyntacticMatches, 26 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2289 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1214, Invalid=6268, Unknown=0, NotChecked=0, Total=7482 [2023-02-15 23:01:45,935 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 56 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:45,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 422 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 23:01:45,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2023-02-15 23:01:45,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 381. [2023-02-15 23:01:45,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 357 states have (on average 1.0672268907563025) internal successors, (381), 357 states have internal predecessors, (381), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 21 states have call predecessors, (21), 2 states have call successors, (21) [2023-02-15 23:01:45,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 405 transitions. [2023-02-15 23:01:45,959 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 405 transitions. Word has length 233 [2023-02-15 23:01:45,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:45,959 INFO L495 AbstractCegarLoop]: Abstraction has 381 states and 405 transitions. [2023-02-15 23:01:45,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 2.5526315789473686) internal successors, (97), 33 states have internal predecessors, (97), 1 states have call successors, (2), 1 states have call predecessors, (2), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2023-02-15 23:01:45,959 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 405 transitions. [2023-02-15 23:01:45,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2023-02-15 23:01:45,961 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:45,962 INFO L195 NwaCegarLoop]: trace histogram [41, 41, 41, 13, 12, 12, 12, 12, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:45,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:46,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-15 23:01:46,167 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:46,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:46,167 INFO L85 PathProgramCache]: Analyzing trace with hash 197737463, now seen corresponding path program 9 times [2023-02-15 23:01:46,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:46,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303066467] [2023-02-15 23:01:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:46,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:46,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 23:01:46,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:46,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:46,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:47,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:47,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:47,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:47,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:47,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:47,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:47,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:47,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:47,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:47,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:47,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3494 backedges. 2156 proven. 559 refuted. 0 times theorem prover too weak. 779 trivial. 0 not checked. [2023-02-15 23:01:47,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:47,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303066467] [2023-02-15 23:01:47,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303066467] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:47,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031467315] [2023-02-15 23:01:47,464 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 23:01:47,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:47,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:47,465 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:47,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-15 23:01:47,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-02-15 23:01:47,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:47,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 23:01:47,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:47,950 INFO L134 CoverageAnalysis]: Checked inductivity of 3494 backedges. 838 proven. 70 refuted. 0 times theorem prover too weak. 2586 trivial. 0 not checked. [2023-02-15 23:01:47,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:01:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3494 backedges. 838 proven. 70 refuted. 0 times theorem prover too weak. 2586 trivial. 0 not checked. [2023-02-15 23:01:48,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031467315] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:01:48,706 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:01:48,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 17, 17] total 71 [2023-02-15 23:01:48,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610343417] [2023-02-15 23:01:48,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:01:48,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2023-02-15 23:01:48,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:01:48,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2023-02-15 23:01:48,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=540, Invalid=4430, Unknown=0, NotChecked=0, Total=4970 [2023-02-15 23:01:48,710 INFO L87 Difference]: Start difference. First operand 381 states and 405 transitions. Second operand has 71 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 63 states have internal predecessors, (151), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 23:01:56,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:01:56,630 INFO L93 Difference]: Finished difference Result 891 states and 1016 transitions. [2023-02-15 23:01:56,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 279 states. [2023-02-15 23:01:56,630 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 63 states have internal predecessors, (151), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) Word has length 249 [2023-02-15 23:01:56,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:01:56,632 INFO L225 Difference]: With dead ends: 891 [2023-02-15 23:01:56,632 INFO L226 Difference]: Without dead ends: 805 [2023-02-15 23:01:56,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 833 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42447 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=19076, Invalid=100986, Unknown=0, NotChecked=0, Total=120062 [2023-02-15 23:01:56,647 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 430 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 1764 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-15 23:01:56,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [440 Valid, 304 Invalid, 1787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1764 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-15 23:01:56,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-02-15 23:01:56,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 432. [2023-02-15 23:01:56,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 408 states have (on average 1.0735294117647058) internal successors, (438), 408 states have internal predecessors, (438), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 21 states have call predecessors, (21), 2 states have call successors, (21) [2023-02-15 23:01:56,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 462 transitions. [2023-02-15 23:01:56,717 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 462 transitions. Word has length 249 [2023-02-15 23:01:56,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:01:56,717 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 462 transitions. [2023-02-15 23:01:56,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 71 states have (on average 2.1267605633802815) internal successors, (151), 63 states have internal predecessors, (151), 1 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (10), 10 states have call predecessors, (10), 1 states have call successors, (10) [2023-02-15 23:01:56,718 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 462 transitions. [2023-02-15 23:01:56,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2023-02-15 23:01:56,719 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:01:56,720 INFO L195 NwaCegarLoop]: trace histogram [50, 50, 50, 13, 12, 12, 12, 12, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-15 23:01:56,724 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-15 23:01:56,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-15 23:01:56,924 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:01:56,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:01:56,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1404927816, now seen corresponding path program 10 times [2023-02-15 23:01:56,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:01:56,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254921733] [2023-02-15 23:01:56,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:01:56,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:01:56,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:57,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 23:01:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:57,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:57,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:57,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:57,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:58,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:58,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:58,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:58,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:58,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:58,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:01:58,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:01:58,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4799 backedges. 3106 proven. 823 refuted. 0 times theorem prover too weak. 870 trivial. 0 not checked. [2023-02-15 23:01:58,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:01:58,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254921733] [2023-02-15 23:01:58,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254921733] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:01:58,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435439378] [2023-02-15 23:01:58,320 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 23:01:58,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:01:58,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:01:58,321 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:01:58,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-15 23:01:58,465 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 23:01:58,465 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:01:58,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-15 23:01:58,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:01:58,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4799 backedges. 3139 proven. 776 refuted. 0 times theorem prover too weak. 884 trivial. 0 not checked. [2023-02-15 23:01:58,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:00,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4799 backedges. 3173 proven. 742 refuted. 0 times theorem prover too weak. 884 trivial. 0 not checked. [2023-02-15 23:02:00,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435439378] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:00,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:02:00,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 39, 39] total 46 [2023-02-15 23:02:00,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097092123] [2023-02-15 23:02:00,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:00,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-02-15 23:02:00,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:00,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-02-15 23:02:00,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1847, Unknown=0, NotChecked=0, Total=2070 [2023-02-15 23:02:00,984 INFO L87 Difference]: Start difference. First operand 432 states and 462 transitions. Second operand has 46 states, 46 states have (on average 2.4565217391304346) internal successors, (113), 37 states have internal predecessors, (113), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-02-15 23:02:02,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:02,871 INFO L93 Difference]: Finished difference Result 572 states and 614 transitions. [2023-02-15 23:02:02,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-02-15 23:02:02,871 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.4565217391304346) internal successors, (113), 37 states have internal predecessors, (113), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 276 [2023-02-15 23:02:02,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:02,885 INFO L225 Difference]: With dead ends: 572 [2023-02-15 23:02:02,886 INFO L226 Difference]: Without dead ends: 469 [2023-02-15 23:02:02,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 536 SyntacticMatches, 36 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4775 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2665, Invalid=14891, Unknown=0, NotChecked=0, Total=17556 [2023-02-15 23:02:02,888 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 78 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:02,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 335 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 23:02:02,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2023-02-15 23:02:02,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 435. [2023-02-15 23:02:02,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 411 states have (on average 1.0705596107055961) internal successors, (440), 411 states have internal predecessors, (440), 3 states have call successors, (3), 2 states have call predecessors, (3), 20 states have return successors, (21), 21 states have call predecessors, (21), 2 states have call successors, (21) [2023-02-15 23:02:02,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 464 transitions. [2023-02-15 23:02:02,917 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 464 transitions. Word has length 276 [2023-02-15 23:02:02,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:02,918 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 464 transitions. [2023-02-15 23:02:02,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.4565217391304346) internal successors, (113), 37 states have internal predecessors, (113), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-02-15 23:02:02,919 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 464 transitions. [2023-02-15 23:02:02,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2023-02-15 23:02:02,920 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:02,920 INFO L195 NwaCegarLoop]: trace histogram [51, 51, 51, 13, 12, 12, 12, 12, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:02,927 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-02-15 23:02:03,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-15 23:02:03,125 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:02:03,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:03,125 INFO L85 PathProgramCache]: Analyzing trace with hash -2020857423, now seen corresponding path program 11 times [2023-02-15 23:02:03,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:03,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526782426] [2023-02-15 23:02:03,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:03,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:03,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:03,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 23:02:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:03,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:03,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:03,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:03,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:03,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:03,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:04,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:04,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:04,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:04,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:04,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:04,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:04,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4959 backedges. 12 proven. 3987 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked. [2023-02-15 23:02:04,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:04,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526782426] [2023-02-15 23:02:04,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526782426] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:02:04,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914841439] [2023-02-15 23:02:04,218 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 23:02:04,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:04,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:04,220 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:02:04,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-15 23:02:04,391 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2023-02-15 23:02:04,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:04,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 619 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-15 23:02:04,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:05,034 INFO L134 CoverageAnalysis]: Checked inductivity of 4959 backedges. 1818 proven. 330 refuted. 0 times theorem prover too weak. 2811 trivial. 0 not checked. [2023-02-15 23:02:05,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:06,199 INFO L134 CoverageAnalysis]: Checked inductivity of 4959 backedges. 1818 proven. 330 refuted. 0 times theorem prover too weak. 2811 trivial. 0 not checked. [2023-02-15 23:02:06,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914841439] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:06,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:02:06,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 33, 33] total 96 [2023-02-15 23:02:06,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126404138] [2023-02-15 23:02:06,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:06,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-02-15 23:02:06,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:06,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-02-15 23:02:06,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1650, Invalid=7662, Unknown=0, NotChecked=0, Total=9312 [2023-02-15 23:02:06,205 INFO L87 Difference]: Start difference. First operand 435 states and 464 transitions. Second operand has 97 states, 96 states have (on average 2.0104166666666665) internal successors, (193), 87 states have internal predecessors, (193), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-02-15 23:02:11,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:11,167 INFO L93 Difference]: Finished difference Result 700 states and 780 transitions. [2023-02-15 23:02:11,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2023-02-15 23:02:11,168 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 96 states have (on average 2.0104166666666665) internal successors, (193), 87 states have internal predecessors, (193), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) Word has length 279 [2023-02-15 23:02:11,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:11,170 INFO L225 Difference]: With dead ends: 700 [2023-02-15 23:02:11,170 INFO L226 Difference]: Without dead ends: 646 [2023-02-15 23:02:11,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 795 GetRequests, 512 SyntacticMatches, 0 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30966 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=20959, Invalid=59981, Unknown=0, NotChecked=0, Total=80940 [2023-02-15 23:02:11,174 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1130 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:11,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 159 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:02:11,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2023-02-15 23:02:11,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 564. [2023-02-15 23:02:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 539 states have (on average 1.0871985157699444) internal successors, (586), 539 states have internal predecessors, (586), 3 states have call successors, (3), 2 states have call predecessors, (3), 21 states have return successors, (22), 22 states have call predecessors, (22), 2 states have call successors, (22) [2023-02-15 23:02:11,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 611 transitions. [2023-02-15 23:02:11,209 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 611 transitions. Word has length 279 [2023-02-15 23:02:11,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:11,209 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 611 transitions. [2023-02-15 23:02:11,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 96 states have (on average 2.0104166666666665) internal successors, (193), 87 states have internal predecessors, (193), 1 states have call successors, (2), 1 states have call predecessors, (2), 11 states have return successors, (11), 11 states have call predecessors, (11), 1 states have call successors, (11) [2023-02-15 23:02:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 611 transitions. [2023-02-15 23:02:11,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2023-02-15 23:02:11,211 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:11,212 INFO L195 NwaCegarLoop]: trace histogram [76, 76, 76, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:11,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-02-15 23:02:11,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:11,413 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:02:11,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:11,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1104447009, now seen corresponding path program 12 times [2023-02-15 23:02:11,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:11,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618236085] [2023-02-15 23:02:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:11,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:11,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:11,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:02:11,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:12,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:12,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:12,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:12,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:12,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:12,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:12,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:12,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:12,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:12,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:12,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:12,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:12,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:12,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:12,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:12,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:12,828 INFO L134 CoverageAnalysis]: Checked inductivity of 10013 backedges. 11 proven. 7885 refuted. 0 times theorem prover too weak. 2117 trivial. 0 not checked. [2023-02-15 23:02:12,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:12,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618236085] [2023-02-15 23:02:12,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618236085] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:02:12,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117126630] [2023-02-15 23:02:12,829 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 23:02:12,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:12,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:12,869 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:02:12,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-15 23:02:13,059 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 21 check-sat command(s) [2023-02-15 23:02:13,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:13,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 23:02:13,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:13,502 INFO L134 CoverageAnalysis]: Checked inductivity of 10013 backedges. 4626 proven. 1997 refuted. 0 times theorem prover too weak. 3390 trivial. 0 not checked. [2023-02-15 23:02:13,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 10013 backedges. 4626 proven. 1997 refuted. 0 times theorem prover too weak. 3390 trivial. 0 not checked. [2023-02-15 23:02:14,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117126630] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:14,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:02:14,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 25, 25] total 76 [2023-02-15 23:02:14,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096923662] [2023-02-15 23:02:14,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:14,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2023-02-15 23:02:14,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:14,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2023-02-15 23:02:14,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=875, Invalid=4977, Unknown=0, NotChecked=0, Total=5852 [2023-02-15 23:02:14,751 INFO L87 Difference]: Start difference. First operand 564 states and 611 transitions. Second operand has 77 states, 76 states have (on average 2.276315789473684) internal successors, (173), 64 states have internal predecessors, (173), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) [2023-02-15 23:02:21,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:21,110 INFO L93 Difference]: Finished difference Result 1199 states and 1327 transitions. [2023-02-15 23:02:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 249 states. [2023-02-15 23:02:21,110 INFO L78 Accepts]: Start accepts. Automaton has has 77 states, 76 states have (on average 2.276315789473684) internal successors, (173), 64 states have internal predecessors, (173), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) Word has length 355 [2023-02-15 23:02:21,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:21,113 INFO L225 Difference]: With dead ends: 1199 [2023-02-15 23:02:21,113 INFO L226 Difference]: Without dead ends: 907 [2023-02-15 23:02:21,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1010 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 321 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47401 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=24190, Invalid=79816, Unknown=0, NotChecked=0, Total=104006 [2023-02-15 23:02:21,120 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 1179 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:21,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 184 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:02:21,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2023-02-15 23:02:21,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 711. [2023-02-15 23:02:21,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 683 states have (on average 1.1010248901903368) internal successors, (752), 683 states have internal predecessors, (752), 3 states have call successors, (3), 2 states have call predecessors, (3), 24 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2023-02-15 23:02:21,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 780 transitions. [2023-02-15 23:02:21,184 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 780 transitions. Word has length 355 [2023-02-15 23:02:21,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:21,185 INFO L495 AbstractCegarLoop]: Abstraction has 711 states and 780 transitions. [2023-02-15 23:02:21,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 77 states, 76 states have (on average 2.276315789473684) internal successors, (173), 64 states have internal predecessors, (173), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) [2023-02-15 23:02:21,185 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 780 transitions. [2023-02-15 23:02:21,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2023-02-15 23:02:21,190 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:21,190 INFO L195 NwaCegarLoop]: trace histogram [119, 119, 119, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:21,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:21,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:21,395 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:02:21,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:21,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1440400015, now seen corresponding path program 13 times [2023-02-15 23:02:21,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:21,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345522494] [2023-02-15 23:02:21,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:21,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:22,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:02:22,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:22,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:22,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:23,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:23,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:23,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:23,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:23,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:23,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:24,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:24,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:24,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:24,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:24,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:24,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:24,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:24,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:24,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:24,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:24,561 INFO L134 CoverageAnalysis]: Checked inductivity of 23758 backedges. 14846 proven. 1579 refuted. 0 times theorem prover too weak. 7333 trivial. 0 not checked. [2023-02-15 23:02:24,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:24,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345522494] [2023-02-15 23:02:24,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345522494] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:02:24,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [449030421] [2023-02-15 23:02:24,562 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 23:02:24,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:24,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:24,563 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:02:24,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-15 23:02:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:24,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1169 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-15 23:02:24,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 23758 backedges. 14889 proven. 1520 refuted. 0 times theorem prover too weak. 7349 trivial. 0 not checked. [2023-02-15 23:02:24,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:30,734 INFO L134 CoverageAnalysis]: Checked inductivity of 23758 backedges. 14942 proven. 1467 refuted. 0 times theorem prover too weak. 7349 trivial. 0 not checked. [2023-02-15 23:02:30,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [449030421] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:30,735 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:02:30,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 49, 49] total 56 [2023-02-15 23:02:30,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116411510] [2023-02-15 23:02:30,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:30,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-02-15 23:02:30,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:30,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-02-15 23:02:30,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=2754, Unknown=0, NotChecked=0, Total=3080 [2023-02-15 23:02:30,737 INFO L87 Difference]: Start difference. First operand 711 states and 780 transitions. Second operand has 56 states, 56 states have (on average 2.4107142857142856) internal successors, (135), 45 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-02-15 23:02:33,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:33,897 INFO L93 Difference]: Finished difference Result 1127 states and 1247 transitions. [2023-02-15 23:02:33,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2023-02-15 23:02:33,897 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 56 states have (on average 2.4107142857142856) internal successors, (135), 45 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) Word has length 517 [2023-02-15 23:02:33,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:33,900 INFO L225 Difference]: With dead ends: 1127 [2023-02-15 23:02:33,900 INFO L226 Difference]: Without dead ends: 748 [2023-02-15 23:02:33,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1245 GetRequests, 1018 SyntacticMatches, 46 SemanticMatches, 181 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9561 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=5194, Invalid=28112, Unknown=0, NotChecked=0, Total=33306 [2023-02-15 23:02:33,905 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 91 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 1625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:33,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 497 Invalid, 1625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 23:02:33,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2023-02-15 23:02:33,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 714. [2023-02-15 23:02:33,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 686 states have (on average 1.0889212827988337) internal successors, (747), 686 states have internal predecessors, (747), 3 states have call successors, (3), 2 states have call predecessors, (3), 24 states have return successors, (25), 25 states have call predecessors, (25), 2 states have call successors, (25) [2023-02-15 23:02:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 775 transitions. [2023-02-15 23:02:33,950 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 775 transitions. Word has length 517 [2023-02-15 23:02:33,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:33,952 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 775 transitions. [2023-02-15 23:02:33,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 2.4107142857142856) internal successors, (135), 45 states have internal predecessors, (135), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-02-15 23:02:33,952 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 775 transitions. [2023-02-15 23:02:33,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 531 [2023-02-15 23:02:33,955 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:33,955 INFO L195 NwaCegarLoop]: trace histogram [120, 120, 120, 17, 16, 16, 16, 16, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:33,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:34,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:34,161 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:02:34,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:34,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1903010600, now seen corresponding path program 14 times [2023-02-15 23:02:34,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:34,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58321847] [2023-02-15 23:02:34,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:34,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:34,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 23:02:34,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:35,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:36,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:36,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:36,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:36,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:36,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:36,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:36,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:36,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:36,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:36,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:37,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:37,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:37,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:37,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:37,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:37,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:37,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:37,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:37,402 INFO L134 CoverageAnalysis]: Checked inductivity of 24278 backedges. 11826 proven. 6875 refuted. 0 times theorem prover too weak. 5577 trivial. 0 not checked. [2023-02-15 23:02:37,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:37,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58321847] [2023-02-15 23:02:37,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58321847] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:02:37,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616441427] [2023-02-15 23:02:37,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 23:02:37,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:37,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:37,404 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:02:37,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-15 23:02:37,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 23:02:37,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:37,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 1194 conjuncts, 59 conjunts are in the unsatisfiable core [2023-02-15 23:02:37,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:37,991 INFO L134 CoverageAnalysis]: Checked inductivity of 24278 backedges. 11843 proven. 6842 refuted. 0 times theorem prover too weak. 5593 trivial. 0 not checked. [2023-02-15 23:02:37,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:46,245 INFO L134 CoverageAnalysis]: Checked inductivity of 24278 backedges. 11843 proven. 6842 refuted. 0 times theorem prover too weak. 5593 trivial. 0 not checked. [2023-02-15 23:02:46,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616441427] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:46,245 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:02:46,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 59, 59] total 64 [2023-02-15 23:02:46,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525946535] [2023-02-15 23:02:46,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:46,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-02-15 23:02:46,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:46,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-02-15 23:02:46,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=3585, Unknown=0, NotChecked=0, Total=4032 [2023-02-15 23:02:46,247 INFO L87 Difference]: Start difference. First operand 714 states and 775 transitions. Second operand has 64 states, 64 states have (on average 2.296875) internal successors, (147), 52 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) [2023-02-15 23:02:48,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:02:48,428 INFO L93 Difference]: Finished difference Result 1232 states and 1341 transitions. [2023-02-15 23:02:48,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 173 states. [2023-02-15 23:02:48,430 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.296875) internal successors, (147), 52 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) Word has length 530 [2023-02-15 23:02:48,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:02:48,432 INFO L225 Difference]: With dead ends: 1232 [2023-02-15 23:02:48,432 INFO L226 Difference]: Without dead ends: 595 [2023-02-15 23:02:48,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1330 GetRequests, 1042 SyntacticMatches, 56 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27399 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=9313, Invalid=45209, Unknown=0, NotChecked=0, Total=54522 [2023-02-15 23:02:48,439 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 613 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:02:48,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 125 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 23:02:48,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-02-15 23:02:48,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 595. [2023-02-15 23:02:48,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 576 states have (on average 1.0729166666666667) internal successors, (618), 576 states have internal predecessors, (618), 3 states have call successors, (3), 2 states have call predecessors, (3), 15 states have return successors, (16), 16 states have call predecessors, (16), 2 states have call successors, (16) [2023-02-15 23:02:48,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 637 transitions. [2023-02-15 23:02:48,476 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 637 transitions. Word has length 530 [2023-02-15 23:02:48,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:02:48,476 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 637 transitions. [2023-02-15 23:02:48,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.296875) internal successors, (147), 52 states have internal predecessors, (147), 1 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (14), 14 states have call predecessors, (14), 1 states have call successors, (14) [2023-02-15 23:02:48,476 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 637 transitions. [2023-02-15 23:02:48,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2023-02-15 23:02:48,479 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:02:48,480 INFO L195 NwaCegarLoop]: trace histogram [130, 130, 130, 16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1] [2023-02-15 23:02:48,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-15 23:02:48,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-02-15 23:02:48,687 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:02:48,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:02:48,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1944963547, now seen corresponding path program 15 times [2023-02-15 23:02:48,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:02:48,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117440090] [2023-02-15 23:02:48,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:02:48,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:02:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:49,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:02:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:50,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:50,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:50,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:51,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:51,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:51,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:51,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:51,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:51,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:51,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:51,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:52,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:52,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:52,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:52,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:52,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:52,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:02:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:02:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 28290 backedges. 18652 proven. 2089 refuted. 0 times theorem prover too weak. 7549 trivial. 0 not checked. [2023-02-15 23:02:52,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:02:52,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117440090] [2023-02-15 23:02:52,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117440090] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:02:52,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470542600] [2023-02-15 23:02:52,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 23:02:52,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:02:52,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:02:52,465 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:02:52,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-15 23:02:52,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 14 check-sat command(s) [2023-02-15 23:02:52,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:02:52,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 817 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-15 23:02:52,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:02:53,852 INFO L134 CoverageAnalysis]: Checked inductivity of 28290 backedges. 13660 proven. 6376 refuted. 0 times theorem prover too weak. 8254 trivial. 0 not checked. [2023-02-15 23:02:53,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:02:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 28290 backedges. 13660 proven. 6376 refuted. 0 times theorem prover too weak. 8254 trivial. 0 not checked. [2023-02-15 23:02:56,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470542600] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:02:56,477 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:02:56,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 32, 32] total 121 [2023-02-15 23:02:56,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483604476] [2023-02-15 23:02:56,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:02:56,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 121 states [2023-02-15 23:02:56,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:02:56,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2023-02-15 23:02:56,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1240, Invalid=13280, Unknown=0, NotChecked=0, Total=14520 [2023-02-15 23:02:56,483 INFO L87 Difference]: Start difference. First operand 595 states and 637 transitions. Second operand has 121 states, 121 states have (on average 2.15702479338843) internal successors, (261), 103 states have internal predecessors, (261), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) [2023-02-15 23:03:14,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:03:14,281 INFO L93 Difference]: Finished difference Result 1780 states and 1982 transitions. [2023-02-15 23:03:14,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 412 states. [2023-02-15 23:03:14,281 INFO L78 Accepts]: Start accepts. Automaton has has 121 states, 121 states have (on average 2.15702479338843) internal successors, (261), 103 states have internal predecessors, (261), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) Word has length 561 [2023-02-15 23:03:14,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:03:14,284 INFO L225 Difference]: With dead ends: 1780 [2023-02-15 23:03:14,284 INFO L226 Difference]: Without dead ends: 1176 [2023-02-15 23:03:14,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1621 GetRequests, 1093 SyntacticMatches, 0 SemanticMatches, 528 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101717 ImplicationChecksByTransitivity, 19.1s TimeCoverageRelationStatistics Valid=42875, Invalid=237495, Unknown=0, NotChecked=0, Total=280370 [2023-02-15 23:03:14,302 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1925 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 2547 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 2608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-15 23:03:14,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1944 Valid, 431 Invalid, 2608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2547 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-15 23:03:14,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2023-02-15 23:03:14,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 766. [2023-02-15 23:03:14,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 744 states have (on average 1.0793010752688172) internal successors, (803), 744 states have internal predecessors, (803), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 19 states have call predecessors, (19), 2 states have call successors, (19) [2023-02-15 23:03:14,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 825 transitions. [2023-02-15 23:03:14,394 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 825 transitions. Word has length 561 [2023-02-15 23:03:14,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:03:14,394 INFO L495 AbstractCegarLoop]: Abstraction has 766 states and 825 transitions. [2023-02-15 23:03:14,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 121 states, 121 states have (on average 2.15702479338843) internal successors, (261), 103 states have internal predecessors, (261), 1 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (20), 20 states have call predecessors, (20), 1 states have call successors, (20) [2023-02-15 23:03:14,395 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 825 transitions. [2023-02-15 23:03:14,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 751 [2023-02-15 23:03:14,399 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:03:14,399 INFO L195 NwaCegarLoop]: trace histogram [182, 182, 182, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1] [2023-02-15 23:03:14,413 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-02-15 23:03:14,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:14,607 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:03:14,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:03:14,607 INFO L85 PathProgramCache]: Analyzing trace with hash 930835064, now seen corresponding path program 16 times [2023-02-15 23:03:14,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:03:14,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625948186] [2023-02-15 23:03:14,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:03:14,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:03:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:15,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:03:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:16,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:17,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:17,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:17,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:18,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:18,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:18,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:18,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:18,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:18,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:18,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:18,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:18,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:18,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:18,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:18,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:18,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:18,971 INFO L134 CoverageAnalysis]: Checked inductivity of 54408 backedges. 31822 proven. 593 refuted. 0 times theorem prover too weak. 21993 trivial. 0 not checked. [2023-02-15 23:03:18,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:03:18,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625948186] [2023-02-15 23:03:18,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625948186] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:03:18,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1771316291] [2023-02-15 23:03:18,972 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 23:03:18,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:18,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:03:18,973 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:03:19,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-15 23:03:19,488 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 23:03:19,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:03:19,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 1702 conjuncts, 59 conjunts are in the unsatisfiable core [2023-02-15 23:03:19,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:03:20,300 INFO L134 CoverageAnalysis]: Checked inductivity of 54408 backedges. 33276 proven. 2628 refuted. 0 times theorem prover too weak. 18504 trivial. 0 not checked. [2023-02-15 23:03:20,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:03:32,577 INFO L134 CoverageAnalysis]: Checked inductivity of 54408 backedges. 33352 proven. 2552 refuted. 0 times theorem prover too weak. 18504 trivial. 0 not checked. [2023-02-15 23:03:32,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1771316291] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:03:32,578 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:03:32,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 59, 59] total 80 [2023-02-15 23:03:32,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603866955] [2023-02-15 23:03:32,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:03:32,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2023-02-15 23:03:32,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:03:32,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2023-02-15 23:03:32,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=565, Invalid=5755, Unknown=0, NotChecked=0, Total=6320 [2023-02-15 23:03:32,580 INFO L87 Difference]: Start difference. First operand 766 states and 825 transitions. Second operand has 80 states, 80 states have (on average 2.2625) internal successors, (181), 69 states have internal predecessors, (181), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-02-15 23:03:37,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:03:37,936 INFO L93 Difference]: Finished difference Result 1217 states and 1335 transitions. [2023-02-15 23:03:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 189 states. [2023-02-15 23:03:37,936 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 80 states have (on average 2.2625) internal successors, (181), 69 states have internal predecessors, (181), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) Word has length 750 [2023-02-15 23:03:37,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:03:37,939 INFO L225 Difference]: With dead ends: 1217 [2023-02-15 23:03:37,939 INFO L226 Difference]: Without dead ends: 772 [2023-02-15 23:03:37,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1763 GetRequests, 1454 SyntacticMatches, 56 SemanticMatches, 253 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22012 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=9239, Invalid=55531, Unknown=0, NotChecked=0, Total=64770 [2023-02-15 23:03:37,948 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 125 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 4530 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 4542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 4530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-15 23:03:37,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 649 Invalid, 4542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 4530 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-15 23:03:37,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2023-02-15 23:03:38,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 772. [2023-02-15 23:03:38,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 750 states have (on average 1.0733333333333333) internal successors, (805), 750 states have internal predecessors, (805), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 19 states have call predecessors, (19), 2 states have call successors, (19) [2023-02-15 23:03:38,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 827 transitions. [2023-02-15 23:03:38,006 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 827 transitions. Word has length 750 [2023-02-15 23:03:38,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:03:38,006 INFO L495 AbstractCegarLoop]: Abstraction has 772 states and 827 transitions. [2023-02-15 23:03:38,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 2.2625) internal successors, (181), 69 states have internal predecessors, (181), 1 states have call successors, (2), 1 states have call predecessors, (2), 13 states have return successors, (13), 13 states have call predecessors, (13), 1 states have call successors, (13) [2023-02-15 23:03:38,009 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 827 transitions. [2023-02-15 23:03:38,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 757 [2023-02-15 23:03:38,014 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:03:38,014 INFO L195 NwaCegarLoop]: trace histogram [184, 184, 184, 19, 18, 18, 18, 18, 18, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1] [2023-02-15 23:03:38,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-02-15 23:03:38,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:38,223 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:03:38,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:03:38,224 INFO L85 PathProgramCache]: Analyzing trace with hash -903249986, now seen corresponding path program 17 times [2023-02-15 23:03:38,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:03:38,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244357528] [2023-02-15 23:03:38,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:03:38,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:03:38,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:39,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:03:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:40,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:41,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:42,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:43,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:43,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:43,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:44,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:44,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:44,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:44,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:44,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:44,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:44,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:44,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:44,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:44,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:45,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:45,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:45,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:45,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:45,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:45,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:45,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:03:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:03:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 55539 backedges. 36869 proven. 3418 refuted. 0 times theorem prover too weak. 15252 trivial. 0 not checked. [2023-02-15 23:03:45,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:03:45,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244357528] [2023-02-15 23:03:45,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244357528] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:03:45,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793767443] [2023-02-15 23:03:45,545 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 23:03:45,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:03:45,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:03:45,547 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:03:45,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-15 23:03:46,219 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 27 check-sat command(s) [2023-02-15 23:03:46,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:03:46,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 1528 conjuncts, 53 conjunts are in the unsatisfiable core [2023-02-15 23:03:46,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:03:46,934 INFO L134 CoverageAnalysis]: Checked inductivity of 55539 backedges. 32845 proven. 701 refuted. 0 times theorem prover too weak. 21993 trivial. 0 not checked. [2023-02-15 23:03:46,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:03:49,195 INFO L134 CoverageAnalysis]: Checked inductivity of 55539 backedges. 32879 proven. 667 refuted. 0 times theorem prover too weak. 21993 trivial. 0 not checked. [2023-02-15 23:03:49,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793767443] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:03:49,195 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:03:49,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 53, 53] total 115 [2023-02-15 23:03:49,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297189309] [2023-02-15 23:03:49,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:03:49,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 115 states [2023-02-15 23:03:49,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:03:49,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2023-02-15 23:03:49,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1002, Invalid=12108, Unknown=0, NotChecked=0, Total=13110 [2023-02-15 23:03:49,199 INFO L87 Difference]: Start difference. First operand 772 states and 827 transitions. Second operand has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 101 states have internal predecessors, (237), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-02-15 23:04:00,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:04:00,721 INFO L93 Difference]: Finished difference Result 1181 states and 1289 transitions. [2023-02-15 23:04:00,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 234 states. [2023-02-15 23:04:00,722 INFO L78 Accepts]: Start accepts. Automaton has has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 101 states have internal predecessors, (237), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) Word has length 756 [2023-02-15 23:04:00,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:04:00,724 INFO L225 Difference]: With dead ends: 1181 [2023-02-15 23:04:00,724 INFO L226 Difference]: Without dead ends: 775 [2023-02-15 23:04:00,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1850 GetRequests, 1478 SyntacticMatches, 28 SemanticMatches, 344 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29122 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=15575, Invalid=103795, Unknown=0, NotChecked=0, Total=119370 [2023-02-15 23:04:00,729 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 187 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 7558 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 7573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 7558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-02-15 23:04:00,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 417 Invalid, 7573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 7558 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-02-15 23:04:00,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2023-02-15 23:04:00,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2023-02-15 23:04:00,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 753 states have (on average 1.0677290836653386) internal successors, (804), 753 states have internal predecessors, (804), 3 states have call successors, (3), 2 states have call predecessors, (3), 18 states have return successors, (19), 19 states have call predecessors, (19), 2 states have call successors, (19) [2023-02-15 23:04:00,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 826 transitions. [2023-02-15 23:04:00,786 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 826 transitions. Word has length 756 [2023-02-15 23:04:00,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:04:00,786 INFO L495 AbstractCegarLoop]: Abstraction has 775 states and 826 transitions. [2023-02-15 23:04:00,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 115 states, 115 states have (on average 2.0608695652173914) internal successors, (237), 101 states have internal predecessors, (237), 1 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (16), 16 states have call predecessors, (16), 1 states have call successors, (16) [2023-02-15 23:04:00,787 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 826 transitions. [2023-02-15 23:04:00,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2023-02-15 23:04:00,791 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:04:00,792 INFO L195 NwaCegarLoop]: trace histogram [185, 185, 185, 21, 20, 20, 20, 20, 18, 18, 18, 18, 18, 17, 1, 1, 1, 1, 1, 1] [2023-02-15 23:04:00,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-15 23:04:01,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:04:01,001 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:04:01,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:04:01,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1639073263, now seen corresponding path program 18 times [2023-02-15 23:04:01,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:04:01,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595890992] [2023-02-15 23:04:01,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:04:01,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:04:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:02,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-02-15 23:04:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:03,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:03,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:04,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:05,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:06,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:06,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:07,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:07,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:07,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:07,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:07,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:08,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:08,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:08,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:08,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:08,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:08,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:08,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:08,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:08,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:04:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:08,637 INFO L134 CoverageAnalysis]: Checked inductivity of 56298 backedges. 27314 proven. 17087 refuted. 0 times theorem prover too weak. 11897 trivial. 0 not checked. [2023-02-15 23:04:08,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:04:08,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595890992] [2023-02-15 23:04:08,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595890992] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:04:08,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649577378] [2023-02-15 23:04:08,637 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 23:04:08,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:04:08,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:04:08,638 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:04:08,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-15 23:04:09,344 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s) [2023-02-15 23:04:09,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 23:04:09,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 1741 conjuncts, 46 conjunts are in the unsatisfiable core [2023-02-15 23:04:09,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:04:10,476 INFO L134 CoverageAnalysis]: Checked inductivity of 56298 backedges. 15207 proven. 34277 refuted. 0 times theorem prover too weak. 6814 trivial. 0 not checked. [2023-02-15 23:04:10,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 23:04:21,330 INFO L134 CoverageAnalysis]: Checked inductivity of 56298 backedges. 15207 proven. 34277 refuted. 0 times theorem prover too weak. 6814 trivial. 0 not checked. [2023-02-15 23:04:21,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649577378] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 23:04:21,330 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 23:04:21,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 46, 46] total 148 [2023-02-15 23:04:21,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504792577] [2023-02-15 23:04:21,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 23:04:21,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 148 states [2023-02-15 23:04:21,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 23:04:21,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants. [2023-02-15 23:04:21,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2165, Invalid=19591, Unknown=0, NotChecked=0, Total=21756 [2023-02-15 23:04:21,334 INFO L87 Difference]: Start difference. First operand 775 states and 826 transitions. Second operand has 148 states, 148 states have (on average 2.2837837837837838) internal successors, (338), 121 states have internal predecessors, (338), 1 states have call successors, (2), 1 states have call predecessors, (2), 29 states have return successors, (29), 29 states have call predecessors, (29), 1 states have call successors, (29) [2023-02-15 23:04:55,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 23:04:55,440 INFO L93 Difference]: Finished difference Result 5348 states and 5946 transitions. [2023-02-15 23:04:55,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 690 states. [2023-02-15 23:04:55,444 INFO L78 Accepts]: Start accepts. Automaton has has 148 states, 148 states have (on average 2.2837837837837838) internal successors, (338), 121 states have internal predecessors, (338), 1 states have call successors, (2), 1 states have call predecessors, (2), 29 states have return successors, (29), 29 states have call predecessors, (29), 1 states have call successors, (29) Word has length 769 [2023-02-15 23:04:55,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 23:04:55,452 INFO L225 Difference]: With dead ends: 5348 [2023-02-15 23:04:55,452 INFO L226 Difference]: Without dead ends: 4021 [2023-02-15 23:04:55,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2338 GetRequests, 1505 SyntacticMatches, 0 SemanticMatches, 833 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351296 ImplicationChecksByTransitivity, 35.7s TimeCoverageRelationStatistics Valid=138328, Invalid=558062, Unknown=0, NotChecked=0, Total=696390 [2023-02-15 23:04:55,489 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 3866 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3895 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 23:04:55,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3895 Valid, 278 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 23:04:55,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4021 states. [2023-02-15 23:04:55,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4021 to 1300. [2023-02-15 23:04:55,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1268 states have (on average 1.0654574132492114) internal successors, (1351), 1268 states have internal predecessors, (1351), 3 states have call successors, (3), 2 states have call predecessors, (3), 28 states have return successors, (29), 29 states have call predecessors, (29), 2 states have call successors, (29) [2023-02-15 23:04:55,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1383 transitions. [2023-02-15 23:04:55,623 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1383 transitions. Word has length 769 [2023-02-15 23:04:55,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 23:04:55,624 INFO L495 AbstractCegarLoop]: Abstraction has 1300 states and 1383 transitions. [2023-02-15 23:04:55,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 148 states, 148 states have (on average 2.2837837837837838) internal successors, (338), 121 states have internal predecessors, (338), 1 states have call successors, (2), 1 states have call predecessors, (2), 29 states have return successors, (29), 29 states have call predecessors, (29), 1 states have call successors, (29) [2023-02-15 23:04:55,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1383 transitions. [2023-02-15 23:04:55,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1332 [2023-02-15 23:04:55,635 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 23:04:55,636 INFO L195 NwaCegarLoop]: trace histogram [339, 339, 339, 29, 28, 28, 28, 28, 28, 28, 28, 28, 28, 27, 1, 1, 1, 1, 1, 1] [2023-02-15 23:04:55,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-15 23:04:55,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-02-15 23:04:55,847 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting recErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [recErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, recErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-02-15 23:04:55,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 23:04:55,847 INFO L85 PathProgramCache]: Analyzing trace with hash 188525905, now seen corresponding path program 19 times [2023-02-15 23:04:55,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 23:04:55,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536886674] [2023-02-15 23:04:55,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 23:04:55,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 23:04:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:04:58,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 23:04:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:01,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:03,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:03,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:05,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:07,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:08,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:08,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:10,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:11,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:12,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:12,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:13,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:14,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:15,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:15,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 23:05:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:15,907 INFO L134 CoverageAnalysis]: Checked inductivity of 185579 backedges. 100237 proven. 818 refuted. 0 times theorem prover too weak. 84524 trivial. 0 not checked. [2023-02-15 23:05:15,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 23:05:15,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536886674] [2023-02-15 23:05:15,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536886674] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 23:05:15,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454748978] [2023-02-15 23:05:15,907 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 23:05:15,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 23:05:15,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 23:05:15,909 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 23:05:15,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-15 23:05:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 23:05:16,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 3031 conjuncts, 69 conjunts are in the unsatisfiable core [2023-02-15 23:05:16,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 23:05:18,110 INFO L134 CoverageAnalysis]: Checked inductivity of 185579 backedges. 92242 proven. 4172 refuted. 0 times theorem prover too weak. 89165 trivial. 0 not checked. [2023-02-15 23:05:18,110 INFO L328 TraceCheckSpWp]: Computing backward predicates...