./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted/NestedRecursion_2c.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a31fd051 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/termination-crafted/NestedRecursion_2c.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 e757bed859e5dfb8bc677e07409ebb4da6a15dd0898403a302646229a6409be5 --- Real Ultimate output --- This is Ultimate 0.2.2-?-a31fd05 [2023-02-15 13:52:17,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 13:52:17,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 13:52:17,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 13:52:17,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 13:52:17,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 13:52:17,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 13:52:17,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 13:52:17,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 13:52:17,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 13:52:17,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 13:52:17,847 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 13:52:17,848 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 13:52:17,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 13:52:17,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 13:52:17,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 13:52:17,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 13:52:17,853 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 13:52:17,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 13:52:17,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 13:52:17,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 13:52:17,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 13:52:17,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 13:52:17,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 13:52:17,860 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 13:52:17,860 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 13:52:17,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 13:52:17,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 13:52:17,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 13:52:17,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 13:52:17,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 13:52:17,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 13:52:17,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 13:52:17,863 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 13:52:17,863 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 13:52:17,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 13:52:17,864 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 13:52:17,864 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 13:52:17,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 13:52:17,865 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 13:52:17,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 13:52:17,869 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-02-15 13:52:17,891 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 13:52:17,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 13:52:17,892 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 13:52:17,892 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 13:52:17,893 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 13:52:17,893 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 13:52:17,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 13:52:17,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 13:52:17,895 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 13:52:17,895 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 13:52:17,895 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-15 13:52:17,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 13:52:17,896 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 13:52:17,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 13:52:17,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 13:52:17,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 13:52:17,896 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-02-15 13:52:17,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 13:52:17,897 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 13:52:17,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 13:52:17,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 13:52:17,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 13:52:17,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 13:52:17,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:52:17,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 13:52:17,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 13:52:17,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 13:52:17,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 13:52:17,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 13:52:17,898 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 13:52:17,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 13:52:17,899 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 13:52:17,899 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 13:52:17,899 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 13:52:17,899 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e757bed859e5dfb8bc677e07409ebb4da6a15dd0898403a302646229a6409be5 [2023-02-15 13:52:18,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 13:52:18,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 13:52:18,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 13:52:18,080 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 13:52:18,080 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 13:52:18,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/NestedRecursion_2c.c [2023-02-15 13:52:19,041 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 13:52:19,165 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 13:52:19,165 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/NestedRecursion_2c.c [2023-02-15 13:52:19,169 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff6eb47d/ee095433e9754d96a55e8e036f33c591/FLAG0688e2555 [2023-02-15 13:52:19,177 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ff6eb47d/ee095433e9754d96a55e8e036f33c591 [2023-02-15 13:52:19,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 13:52:19,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 13:52:19,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 13:52:19,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 13:52:19,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 13:52:19,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:52:19" (1/1) ... [2023-02-15 13:52:19,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6b3e74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:19, skipping insertion in model container [2023-02-15 13:52:19,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:52:19" (1/1) ... [2023-02-15 13:52:19,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 13:52:19,196 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 13:52:19,291 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:52:19,294 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 13:52:19,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 13:52:19,309 INFO L208 MainTranslator]: Completed translation [2023-02-15 13:52:19,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:19 WrapperNode [2023-02-15 13:52:19,310 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 13:52:19,310 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 13:52:19,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 13:52:19,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 13:52:19,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:19" (1/1) ... [2023-02-15 13:52:19,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:19" (1/1) ... [2023-02-15 13:52:19,327 INFO L138 Inliner]: procedures = 5, calls = 5, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 11 [2023-02-15 13:52:19,328 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 13:52:19,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 13:52:19,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 13:52:19,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 13:52:19,333 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:19" (1/1) ... [2023-02-15 13:52:19,333 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:19" (1/1) ... [2023-02-15 13:52:19,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:19" (1/1) ... [2023-02-15 13:52:19,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:19" (1/1) ... [2023-02-15 13:52:19,335 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:19" (1/1) ... [2023-02-15 13:52:19,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:19" (1/1) ... [2023-02-15 13:52:19,339 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:19" (1/1) ... [2023-02-15 13:52:19,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:19" (1/1) ... [2023-02-15 13:52:19,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 13:52:19,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 13:52:19,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 13:52:19,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 13:52:19,343 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:19" (1/1) ... [2023-02-15 13:52:19,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 13:52:19,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:19,365 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 13:52:19,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 13:52:19,393 INFO L130 BoogieDeclarations]: Found specification of procedure g [2023-02-15 13:52:19,394 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2023-02-15 13:52:19,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 13:52:19,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 13:52:19,436 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 13:52:19,437 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 13:52:19,534 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 13:52:19,547 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 13:52:19,548 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-15 13:52:19,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:52:19 BoogieIcfgContainer [2023-02-15 13:52:19,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 13:52:19,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 13:52:19,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 13:52:19,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 13:52:19,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:52:19" (1/3) ... [2023-02-15 13:52:19,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca6531e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:52:19, skipping insertion in model container [2023-02-15 13:52:19,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:52:19" (2/3) ... [2023-02-15 13:52:19,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ca6531e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:52:19, skipping insertion in model container [2023-02-15 13:52:19,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:52:19" (3/3) ... [2023-02-15 13:52:19,565 INFO L112 eAbstractionObserver]: Analyzing ICFG NestedRecursion_2c.c [2023-02-15 13:52:19,586 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 13:52:19,586 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-02-15 13:52:19,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 13:52:19,619 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;@58fe7766, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 13:52:19,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-02-15 13:52:19,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 13:52:19,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-15 13:52:19,626 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:19,626 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:19,627 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:19,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:19,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1134721268, now seen corresponding path program 1 times [2023-02-15 13:52:19,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:19,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864776587] [2023-02-15 13:52:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:19,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:19,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:52:19,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:19,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864776587] [2023-02-15 13:52:19,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864776587] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:19,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:19,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 13:52:19,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906186564] [2023-02-15 13:52:19,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:19,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:52:19,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:19,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:52:19,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:52:19,758 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:19,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:19,856 INFO L93 Difference]: Finished difference Result 45 states and 52 transitions. [2023-02-15 13:52:19,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 13:52:19,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-15 13:52:19,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:19,863 INFO L225 Difference]: With dead ends: 45 [2023-02-15 13:52:19,864 INFO L226 Difference]: Without dead ends: 34 [2023-02-15 13:52:19,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 13:52:19,869 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 28 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:19,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 75 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:52:19,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-15 13:52:19,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2023-02-15 13:52:19,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.4210526315789473) internal successors, (27), 23 states have internal predecessors, (27), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 13:52:19,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2023-02-15 13:52:19,913 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 7 [2023-02-15 13:52:19,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:19,914 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2023-02-15 13:52:19,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:19,915 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2023-02-15 13:52:19,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-15 13:52:19,915 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:19,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:19,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-15 13:52:19,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:19,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:19,917 INFO L85 PathProgramCache]: Analyzing trace with hash 816620978, now seen corresponding path program 1 times [2023-02-15 13:52:19,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:19,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493841856] [2023-02-15 13:52:19,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:19,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:19,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:52:19,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:19,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493841856] [2023-02-15 13:52:19,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493841856] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:19,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:19,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 13:52:19,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720546180] [2023-02-15 13:52:19,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:19,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:52:19,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:19,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:52:19,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:52:19,966 INFO L87 Difference]: Start difference. First operand 29 states and 35 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 13:52:20,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:20,022 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2023-02-15 13:52:20,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 13:52:20,022 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 13:52:20,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:20,023 INFO L225 Difference]: With dead ends: 47 [2023-02-15 13:52:20,023 INFO L226 Difference]: Without dead ends: 46 [2023-02-15 13:52:20,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 13:52:20,025 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 24 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:20,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 54 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:20,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-02-15 13:52:20,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2023-02-15 13:52:20,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 32 states have internal predecessors, (39), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 13:52:20,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2023-02-15 13:52:20,033 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 8 [2023-02-15 13:52:20,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:20,033 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2023-02-15 13:52:20,033 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 13:52:20,033 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2023-02-15 13:52:20,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-15 13:52:20,034 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:20,034 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:20,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-15 13:52:20,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:20,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:20,039 INFO L85 PathProgramCache]: Analyzing trace with hash 431664181, now seen corresponding path program 1 times [2023-02-15 13:52:20,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:20,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988414418] [2023-02-15 13:52:20,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:20,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:20,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:20,126 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 13:52:20,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:20,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988414418] [2023-02-15 13:52:20,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988414418] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:20,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177719534] [2023-02-15 13:52:20,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:20,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:20,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:20,129 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:52:20,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 13:52:20,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:20,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-15 13:52:20,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:20,215 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 13:52:20,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:52:20,282 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 13:52:20,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177719534] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:52:20,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:52:20,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-02-15 13:52:20,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782775340] [2023-02-15 13:52:20,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:52:20,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 13:52:20,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:20,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 13:52:20,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-02-15 13:52:20,287 INFO L87 Difference]: Start difference. First operand 41 states and 51 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 13:52:20,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:20,488 INFO L93 Difference]: Finished difference Result 96 states and 118 transitions. [2023-02-15 13:52:20,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 13:52:20,489 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 13:52:20,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:20,490 INFO L225 Difference]: With dead ends: 96 [2023-02-15 13:52:20,490 INFO L226 Difference]: Without dead ends: 95 [2023-02-15 13:52:20,491 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2023-02-15 13:52:20,492 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 139 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:20,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 104 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:52:20,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-02-15 13:52:20,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 77. [2023-02-15 13:52:20,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 59 states have internal predecessors, (75), 13 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-15 13:52:20,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2023-02-15 13:52:20,506 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 12 [2023-02-15 13:52:20,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:20,506 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2023-02-15 13:52:20,506 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 13:52:20,507 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2023-02-15 13:52:20,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 13:52:20,507 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:20,507 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:20,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 13:52:20,712 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 13:52:20,712 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:20,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:20,713 INFO L85 PathProgramCache]: Analyzing trace with hash 574996991, now seen corresponding path program 1 times [2023-02-15 13:52:20,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:20,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997402488] [2023-02-15 13:52:20,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:20,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:20,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:20,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 13:52:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:20,751 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 13:52:20,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:20,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997402488] [2023-02-15 13:52:20,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997402488] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:20,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:20,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 13:52:20,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119930599] [2023-02-15 13:52:20,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:20,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 13:52:20,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:20,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 13:52:20,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:52:20,756 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 13:52:20,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:20,784 INFO L93 Difference]: Finished difference Result 117 states and 166 transitions. [2023-02-15 13:52:20,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 13:52:20,785 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 15 [2023-02-15 13:52:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:20,786 INFO L225 Difference]: With dead ends: 117 [2023-02-15 13:52:20,788 INFO L226 Difference]: Without dead ends: 116 [2023-02-15 13:52:20,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 13:52:20,789 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 3 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:20,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 47 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:20,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-15 13:52:20,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 99. [2023-02-15 13:52:20,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 72 states have (on average 1.2777777777777777) internal successors, (92), 75 states have internal predecessors, (92), 13 states have call successors, (13), 6 states have call predecessors, (13), 10 states have return successors, (22), 17 states have call predecessors, (22), 11 states have call successors, (22) [2023-02-15 13:52:20,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 127 transitions. [2023-02-15 13:52:20,811 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 127 transitions. Word has length 15 [2023-02-15 13:52:20,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:20,812 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 127 transitions. [2023-02-15 13:52:20,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 13:52:20,813 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2023-02-15 13:52:20,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 13:52:20,813 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:20,813 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:20,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-15 13:52:20,814 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:20,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:20,815 INFO L85 PathProgramCache]: Analyzing trace with hash 645037581, now seen corresponding path program 1 times [2023-02-15 13:52:20,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:20,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098244290] [2023-02-15 13:52:20,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:20,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:20,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 13:52:20,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:20,849 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 13:52:20,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:20,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098244290] [2023-02-15 13:52:20,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098244290] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:20,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:20,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 13:52:20,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007047655] [2023-02-15 13:52:20,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:20,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-15 13:52:20,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:20,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-15 13:52:20,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:52:20,854 INFO L87 Difference]: Start difference. First operand 99 states and 127 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 13:52:20,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:20,875 INFO L93 Difference]: Finished difference Result 99 states and 127 transitions. [2023-02-15 13:52:20,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-15 13:52:20,876 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 13:52:20,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:20,879 INFO L225 Difference]: With dead ends: 99 [2023-02-15 13:52:20,879 INFO L226 Difference]: Without dead ends: 98 [2023-02-15 13:52:20,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-15 13:52:20,881 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:20,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 32 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:20,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-02-15 13:52:20,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2023-02-15 13:52:20,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 74 states have internal predecessors, (86), 13 states have call successors, (13), 6 states have call predecessors, (13), 10 states have return successors, (22), 17 states have call predecessors, (22), 11 states have call successors, (22) [2023-02-15 13:52:20,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 121 transitions. [2023-02-15 13:52:20,900 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 121 transitions. Word has length 16 [2023-02-15 13:52:20,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:20,900 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 121 transitions. [2023-02-15 13:52:20,900 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 13:52:20,901 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 121 transitions. [2023-02-15 13:52:20,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-15 13:52:20,901 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:20,901 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:20,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-15 13:52:20,902 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:20,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:20,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1915238450, now seen corresponding path program 1 times [2023-02-15 13:52:20,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:20,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144057365] [2023-02-15 13:52:20,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:20,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:20,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:20,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 13:52:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:20,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 13:52:20,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:20,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144057365] [2023-02-15 13:52:20,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144057365] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:20,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:20,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 13:52:20,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511760308] [2023-02-15 13:52:20,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:21,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 13:52:21,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:21,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 13:52:21,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 13:52:21,001 INFO L87 Difference]: Start difference. First operand 98 states and 121 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 13:52:21,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:21,090 INFO L93 Difference]: Finished difference Result 137 states and 175 transitions. [2023-02-15 13:52:21,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 13:52:21,090 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-02-15 13:52:21,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:21,097 INFO L225 Difference]: With dead ends: 137 [2023-02-15 13:52:21,097 INFO L226 Difference]: Without dead ends: 136 [2023-02-15 13:52:21,097 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-15 13:52:21,099 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 31 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:21,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 74 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:52:21,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-02-15 13:52:21,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 126. [2023-02-15 13:52:21,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 90 states have (on average 1.1888888888888889) internal successors, (107), 98 states have internal predecessors, (107), 22 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (32), 20 states have call predecessors, (32), 19 states have call successors, (32) [2023-02-15 13:52:21,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 161 transitions. [2023-02-15 13:52:21,121 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 161 transitions. Word has length 20 [2023-02-15 13:52:21,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:21,122 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 161 transitions. [2023-02-15 13:52:21,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 13:52:21,122 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 161 transitions. [2023-02-15 13:52:21,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-15 13:52:21,122 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:21,122 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:21,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-15 13:52:21,123 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:21,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:21,123 INFO L85 PathProgramCache]: Analyzing trace with hash 757150232, now seen corresponding path program 1 times [2023-02-15 13:52:21,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:21,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850826836] [2023-02-15 13:52:21,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:21,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:21,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 13:52:21,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:21,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 13:52:21,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:21,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850826836] [2023-02-15 13:52:21,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850826836] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:21,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:21,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 13:52:21,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101204565] [2023-02-15 13:52:21,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:21,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 13:52:21,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:21,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 13:52:21,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-15 13:52:21,183 INFO L87 Difference]: Start difference. First operand 126 states and 161 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 13:52:21,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:21,265 INFO L93 Difference]: Finished difference Result 156 states and 201 transitions. [2023-02-15 13:52:21,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 13:52:21,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-02-15 13:52:21,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:21,267 INFO L225 Difference]: With dead ends: 156 [2023-02-15 13:52:21,267 INFO L226 Difference]: Without dead ends: 155 [2023-02-15 13:52:21,267 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-02-15 13:52:21,268 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 30 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:21,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 73 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:21,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-02-15 13:52:21,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 144. [2023-02-15 13:52:21,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 103 states have (on average 1.1844660194174756) internal successors, (122), 112 states have internal predecessors, (122), 25 states have call successors, (25), 8 states have call predecessors, (25), 13 states have return successors, (37), 23 states have call predecessors, (37), 22 states have call successors, (37) [2023-02-15 13:52:21,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 184 transitions. [2023-02-15 13:52:21,298 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 184 transitions. Word has length 21 [2023-02-15 13:52:21,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:21,298 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 184 transitions. [2023-02-15 13:52:21,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 13:52:21,298 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 184 transitions. [2023-02-15 13:52:21,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 13:52:21,300 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:21,300 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:21,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-15 13:52:21,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:21,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:21,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1990628763, now seen corresponding path program 2 times [2023-02-15 13:52:21,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:21,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845461363] [2023-02-15 13:52:21,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:21,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:21,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 13:52:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:21,382 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 13:52:21,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:21,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845461363] [2023-02-15 13:52:21,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845461363] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:21,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87962757] [2023-02-15 13:52:21,385 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:52:21,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:21,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:21,389 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:52:21,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 13:52:21,413 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 13:52:21,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:52:21,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 13:52:21,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:21,439 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 13:52:21,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:52:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 13:52:21,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87962757] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:52:21,550 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:52:21,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2023-02-15 13:52:21,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880228970] [2023-02-15 13:52:21,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:52:21,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 13:52:21,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:21,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 13:52:21,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2023-02-15 13:52:21,552 INFO L87 Difference]: Start difference. First operand 144 states and 184 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 13:52:21,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:21,820 INFO L93 Difference]: Finished difference Result 215 states and 277 transitions. [2023-02-15 13:52:21,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-15 13:52:21,821 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 25 [2023-02-15 13:52:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:21,824 INFO L225 Difference]: With dead ends: 215 [2023-02-15 13:52:21,824 INFO L226 Difference]: Without dead ends: 214 [2023-02-15 13:52:21,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2023-02-15 13:52:21,826 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 134 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:21,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 137 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 13:52:21,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-02-15 13:52:21,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 198. [2023-02-15 13:52:21,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 142 states have (on average 1.176056338028169) internal successors, (167), 154 states have internal predecessors, (167), 34 states have call successors, (34), 11 states have call predecessors, (34), 19 states have return successors, (52), 32 states have call predecessors, (52), 31 states have call successors, (52) [2023-02-15 13:52:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 253 transitions. [2023-02-15 13:52:21,840 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 253 transitions. Word has length 25 [2023-02-15 13:52:21,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:21,840 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 253 transitions. [2023-02-15 13:52:21,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 10 states have internal predecessors, (31), 5 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 13:52:21,841 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 253 transitions. [2023-02-15 13:52:21,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-15 13:52:21,845 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:21,845 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1] [2023-02-15 13:52:21,851 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 13:52:22,051 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 13:52:22,051 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:22,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:22,051 INFO L85 PathProgramCache]: Analyzing trace with hash -895487436, now seen corresponding path program 2 times [2023-02-15 13:52:22,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:22,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421567649] [2023-02-15 13:52:22,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:22,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:22,163 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:52:22,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:22,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421567649] [2023-02-15 13:52:22,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421567649] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:22,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903676888] [2023-02-15 13:52:22,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:52:22,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:22,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:22,165 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:52:22,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 13:52:22,186 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 13:52:22,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:52:22,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 13:52:22,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:52:22,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:52:22,364 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:52:22,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903676888] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:52:22,364 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:52:22,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2023-02-15 13:52:22,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529906194] [2023-02-15 13:52:22,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:52:22,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-15 13:52:22,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:22,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-15 13:52:22,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2023-02-15 13:52:22,366 INFO L87 Difference]: Start difference. First operand 198 states and 253 transitions. Second operand has 24 states, 21 states have (on average 2.0) internal successors, (42), 14 states have internal predecessors, (42), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:22,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:22,743 INFO L93 Difference]: Finished difference Result 319 states and 414 transitions. [2023-02-15 13:52:22,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-15 13:52:22,743 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0) internal successors, (42), 14 states have internal predecessors, (42), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-15 13:52:22,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:22,746 INFO L225 Difference]: With dead ends: 319 [2023-02-15 13:52:22,746 INFO L226 Difference]: Without dead ends: 318 [2023-02-15 13:52:22,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=554, Invalid=1252, Unknown=0, NotChecked=0, Total=1806 [2023-02-15 13:52:22,749 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 312 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:22,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 248 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 13:52:22,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2023-02-15 13:52:22,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 306. [2023-02-15 13:52:22,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 220 states have (on average 1.1681818181818182) internal successors, (257), 238 states have internal predecessors, (257), 52 states have call successors, (52), 17 states have call predecessors, (52), 31 states have return successors, (82), 50 states have call predecessors, (82), 49 states have call successors, (82) [2023-02-15 13:52:22,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 391 transitions. [2023-02-15 13:52:22,769 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 391 transitions. Word has length 27 [2023-02-15 13:52:22,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:22,769 INFO L495 AbstractCegarLoop]: Abstraction has 306 states and 391 transitions. [2023-02-15 13:52:22,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0) internal successors, (42), 14 states have internal predecessors, (42), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:22,769 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 391 transitions. [2023-02-15 13:52:22,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-15 13:52:22,771 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:22,771 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:22,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-15 13:52:22,975 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 13:52:22,975 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:22,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:22,976 INFO L85 PathProgramCache]: Analyzing trace with hash -126444680, now seen corresponding path program 1 times [2023-02-15 13:52:22,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:22,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65497812] [2023-02-15 13:52:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:22,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:22,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:22,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 13:52:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:23,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:23,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:23,021 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-15 13:52:23,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:23,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65497812] [2023-02-15 13:52:23,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65497812] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:23,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:23,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 13:52:23,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552954143] [2023-02-15 13:52:23,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:23,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 13:52:23,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:23,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 13:52:23,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 13:52:23,023 INFO L87 Difference]: Start difference. First operand 306 states and 391 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 13:52:23,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:23,041 INFO L93 Difference]: Finished difference Result 306 states and 391 transitions. [2023-02-15 13:52:23,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 13:52:23,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2023-02-15 13:52:23,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:23,043 INFO L225 Difference]: With dead ends: 306 [2023-02-15 13:52:23,043 INFO L226 Difference]: Without dead ends: 305 [2023-02-15 13:52:23,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 13:52:23,044 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:23,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 54 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:23,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2023-02-15 13:52:23,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 305. [2023-02-15 13:52:23,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 220 states have (on average 1.0909090909090908) internal successors, (240), 237 states have internal predecessors, (240), 52 states have call successors, (52), 17 states have call predecessors, (52), 31 states have return successors, (82), 50 states have call predecessors, (82), 49 states have call successors, (82) [2023-02-15 13:52:23,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 374 transitions. [2023-02-15 13:52:23,056 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 374 transitions. Word has length 31 [2023-02-15 13:52:23,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:23,056 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 374 transitions. [2023-02-15 13:52:23,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 13:52:23,056 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 374 transitions. [2023-02-15 13:52:23,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 13:52:23,058 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:23,058 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:23,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-15 13:52:23,059 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:23,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:23,059 INFO L85 PathProgramCache]: Analyzing trace with hash 801174005, now seen corresponding path program 1 times [2023-02-15 13:52:23,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:23,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649161770] [2023-02-15 13:52:23,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:23,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:23,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 13:52:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:23,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:23,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:23,126 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-15 13:52:23,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:23,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649161770] [2023-02-15 13:52:23,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649161770] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:23,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:23,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 13:52:23,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511620898] [2023-02-15 13:52:23,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:23,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 13:52:23,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:23,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 13:52:23,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 13:52:23,128 INFO L87 Difference]: Start difference. First operand 305 states and 374 transitions. Second operand has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 13:52:23,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:23,196 INFO L93 Difference]: Finished difference Result 325 states and 398 transitions. [2023-02-15 13:52:23,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 13:52:23,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2023-02-15 13:52:23,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:23,198 INFO L225 Difference]: With dead ends: 325 [2023-02-15 13:52:23,198 INFO L226 Difference]: Without dead ends: 324 [2023-02-15 13:52:23,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-02-15 13:52:23,199 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:23,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 67 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:23,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-02-15 13:52:23,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 321. [2023-02-15 13:52:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 232 states have (on average 1.0948275862068966) internal successors, (254), 249 states have internal predecessors, (254), 55 states have call successors, (55), 18 states have call predecessors, (55), 32 states have return successors, (70), 53 states have call predecessors, (70), 52 states have call successors, (70) [2023-02-15 13:52:23,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 379 transitions. [2023-02-15 13:52:23,221 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 379 transitions. Word has length 36 [2023-02-15 13:52:23,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:23,222 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 379 transitions. [2023-02-15 13:52:23,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.5) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 13:52:23,223 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 379 transitions. [2023-02-15 13:52:23,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-15 13:52:23,223 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:23,223 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:23,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-15 13:52:23,223 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:23,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:23,224 INFO L85 PathProgramCache]: Analyzing trace with hash -933409583, now seen corresponding path program 1 times [2023-02-15 13:52:23,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:23,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418348467] [2023-02-15 13:52:23,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:23,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:23,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 13:52:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:23,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:23,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:23,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:23,286 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-15 13:52:23,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:23,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418348467] [2023-02-15 13:52:23,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418348467] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:23,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 13:52:23,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 13:52:23,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093091727] [2023-02-15 13:52:23,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:23,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 13:52:23,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:23,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 13:52:23,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 13:52:23,287 INFO L87 Difference]: Start difference. First operand 321 states and 379 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 13:52:23,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:23,356 INFO L93 Difference]: Finished difference Result 322 states and 379 transitions. [2023-02-15 13:52:23,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 13:52:23,356 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 37 [2023-02-15 13:52:23,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:23,358 INFO L225 Difference]: With dead ends: 322 [2023-02-15 13:52:23,358 INFO L226 Difference]: Without dead ends: 321 [2023-02-15 13:52:23,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-02-15 13:52:23,360 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:23,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 62 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:23,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-02-15 13:52:23,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 320. [2023-02-15 13:52:23,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 232 states have (on average 1.0862068965517242) internal successors, (252), 248 states have internal predecessors, (252), 55 states have call successors, (55), 18 states have call predecessors, (55), 32 states have return successors, (70), 53 states have call predecessors, (70), 52 states have call successors, (70) [2023-02-15 13:52:23,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 377 transitions. [2023-02-15 13:52:23,372 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 377 transitions. Word has length 37 [2023-02-15 13:52:23,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:23,372 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 377 transitions. [2023-02-15 13:52:23,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 13:52:23,372 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 377 transitions. [2023-02-15 13:52:23,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-02-15 13:52:23,374 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:23,374 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:23,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-15 13:52:23,374 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:23,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:23,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1029918734, now seen corresponding path program 3 times [2023-02-15 13:52:23,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:23,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461620674] [2023-02-15 13:52:23,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:23,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:23,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 13:52:23,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:23,489 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 33 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 13:52:23,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:23,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461620674] [2023-02-15 13:52:23,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461620674] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:23,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [925151160] [2023-02-15 13:52:23,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 13:52:23,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:23,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:23,490 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:52:23,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-02-15 13:52:23,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:52:23,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 13:52:23,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 13:52:23,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 33 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 13:52:23,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:52:23,704 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 33 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 13:52:23,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [925151160] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:52:23,705 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:52:23,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2023-02-15 13:52:23,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760666333] [2023-02-15 13:52:23,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:52:23,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-15 13:52:23,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:23,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-15 13:52:23,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2023-02-15 13:52:23,708 INFO L87 Difference]: Start difference. First operand 320 states and 377 transitions. Second operand has 26 states, 25 states have (on average 2.2) internal successors, (55), 16 states have internal predecessors, (55), 11 states have call successors, (12), 11 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 13:52:24,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:24,309 INFO L93 Difference]: Finished difference Result 456 states and 580 transitions. [2023-02-15 13:52:24,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-02-15 13:52:24,309 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.2) internal successors, (55), 16 states have internal predecessors, (55), 11 states have call successors, (12), 11 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2023-02-15 13:52:24,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:24,311 INFO L225 Difference]: With dead ends: 456 [2023-02-15 13:52:24,311 INFO L226 Difference]: Without dead ends: 455 [2023-02-15 13:52:24,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 736 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=900, Invalid=2406, Unknown=0, NotChecked=0, Total=3306 [2023-02-15 13:52:24,313 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 480 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 156 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:24,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 156 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 520 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 13:52:24,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2023-02-15 13:52:24,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 428. [2023-02-15 13:52:24,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 310 states have (on average 1.0838709677419356) internal successors, (336), 332 states have internal predecessors, (336), 73 states have call successors, (73), 24 states have call predecessors, (73), 44 states have return successors, (94), 71 states have call predecessors, (94), 70 states have call successors, (94) [2023-02-15 13:52:24,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 503 transitions. [2023-02-15 13:52:24,328 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 503 transitions. Word has length 40 [2023-02-15 13:52:24,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:24,329 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 503 transitions. [2023-02-15 13:52:24,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.2) internal successors, (55), 16 states have internal predecessors, (55), 11 states have call successors, (12), 11 states have call predecessors, (12), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 13:52:24,329 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 503 transitions. [2023-02-15 13:52:24,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-15 13:52:24,329 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:24,329 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:24,344 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 13:52:24,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:24,533 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:24,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:24,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1938510892, now seen corresponding path program 2 times [2023-02-15 13:52:24,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:24,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472113229] [2023-02-15 13:52:24,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:24,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:24,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:24,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 13:52:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:24,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:24,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:24,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:24,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:24,603 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-15 13:52:24,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:24,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472113229] [2023-02-15 13:52:24,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472113229] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:24,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158153269] [2023-02-15 13:52:24,604 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 13:52:24,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:24,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:24,605 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:52:24,607 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 13:52:24,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 13:52:24,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:52:24,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 13:52:24,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:24,651 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-15 13:52:24,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:52:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-15 13:52:24,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [158153269] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:52:24,768 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:52:24,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-02-15 13:52:24,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949396041] [2023-02-15 13:52:24,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:52:24,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 13:52:24,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:24,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 13:52:24,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2023-02-15 13:52:24,770 INFO L87 Difference]: Start difference. First operand 428 states and 503 transitions. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 13:52:25,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:25,046 INFO L93 Difference]: Finished difference Result 483 states and 569 transitions. [2023-02-15 13:52:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-02-15 13:52:25,046 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2023-02-15 13:52:25,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:25,048 INFO L225 Difference]: With dead ends: 483 [2023-02-15 13:52:25,048 INFO L226 Difference]: Without dead ends: 482 [2023-02-15 13:52:25,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=350, Invalid=1132, Unknown=0, NotChecked=0, Total=1482 [2023-02-15 13:52:25,049 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 90 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:25,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 81 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 13:52:25,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2023-02-15 13:52:25,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 482. [2023-02-15 13:52:25,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 349 states have (on average 1.0830945558739256) internal successors, (378), 374 states have internal predecessors, (378), 82 states have call successors, (82), 27 states have call predecessors, (82), 50 states have return successors, (106), 80 states have call predecessors, (106), 79 states have call successors, (106) [2023-02-15 13:52:25,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 566 transitions. [2023-02-15 13:52:25,064 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 566 transitions. Word has length 41 [2023-02-15 13:52:25,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:25,065 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 566 transitions. [2023-02-15 13:52:25,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 13:52:25,065 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 566 transitions. [2023-02-15 13:52:25,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-02-15 13:52:25,066 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:25,066 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1, 1, 1] [2023-02-15 13:52:25,074 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 13:52:25,274 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,SelfDestructingSolverStorable13 [2023-02-15 13:52:25,275 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:25,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:25,275 INFO L85 PathProgramCache]: Analyzing trace with hash -130937836, now seen corresponding path program 3 times [2023-02-15 13:52:25,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:25,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781841674] [2023-02-15 13:52:25,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:25,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:25,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:25,515 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:52:25,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:25,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781841674] [2023-02-15 13:52:25,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781841674] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:25,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952483456] [2023-02-15 13:52:25,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 13:52:25,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:25,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:25,517 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 13:52:25,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 13:52:25,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-15 13:52:25,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:52:25,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 13:52:25,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:25,605 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:52:25,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:52:26,000 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:52:26,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952483456] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:52:26,001 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:52:26,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2023-02-15 13:52:26,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087138811] [2023-02-15 13:52:26,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:52:26,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-02-15 13:52:26,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:26,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-02-15 13:52:26,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2023-02-15 13:52:26,003 INFO L87 Difference]: Start difference. First operand 482 states and 566 transitions. Second operand has 48 states, 45 states have (on average 2.0) internal successors, (90), 26 states have internal predecessors, (90), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:26,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:26,960 INFO L93 Difference]: Finished difference Result 703 states and 908 transitions. [2023-02-15 13:52:26,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2023-02-15 13:52:26,961 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 2.0) internal successors, (90), 26 states have internal predecessors, (90), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2023-02-15 13:52:26,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:26,963 INFO L225 Difference]: With dead ends: 703 [2023-02-15 13:52:26,964 INFO L226 Difference]: Without dead ends: 702 [2023-02-15 13:52:26,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1830 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=2534, Invalid=5656, Unknown=0, NotChecked=0, Total=8190 [2023-02-15 13:52:26,966 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 960 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 540 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 540 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:26,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 345 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [540 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 13:52:26,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2023-02-15 13:52:26,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 698. [2023-02-15 13:52:26,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 505 states have (on average 1.0811881188118813) internal successors, (546), 542 states have internal predecessors, (546), 118 states have call successors, (118), 39 states have call predecessors, (118), 74 states have return successors, (154), 116 states have call predecessors, (154), 115 states have call successors, (154) [2023-02-15 13:52:26,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 818 transitions. [2023-02-15 13:52:26,990 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 818 transitions. Word has length 57 [2023-02-15 13:52:26,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:26,990 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 818 transitions. [2023-02-15 13:52:26,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 2.0) internal successors, (90), 26 states have internal predecessors, (90), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:26,991 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 818 transitions. [2023-02-15 13:52:26,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-02-15 13:52:26,992 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:26,993 INFO L195 NwaCegarLoop]: trace histogram [9, 7, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:26,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 13:52:27,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-02-15 13:52:27,197 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:27,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:27,197 INFO L85 PathProgramCache]: Analyzing trace with hash -731848523, now seen corresponding path program 3 times [2023-02-15 13:52:27,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:27,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219616260] [2023-02-15 13:52:27,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:27,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:27,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 13:52:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:27,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:27,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:27,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:27,314 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 74 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-15 13:52:27,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:27,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219616260] [2023-02-15 13:52:27,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219616260] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:27,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607293046] [2023-02-15 13:52:27,315 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 13:52:27,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:27,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:27,316 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 13:52:27,318 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 13:52:27,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-02-15 13:52:27,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:52:27,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 13:52:27,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:27,380 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 74 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-15 13:52:27,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:52:27,582 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 74 proven. 42 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-15 13:52:27,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607293046] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:52:27,582 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:52:27,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2023-02-15 13:52:27,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334316798] [2023-02-15 13:52:27,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:52:27,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-15 13:52:27,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:27,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-15 13:52:27,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=610, Unknown=0, NotChecked=0, Total=756 [2023-02-15 13:52:27,583 INFO L87 Difference]: Start difference. First operand 698 states and 818 transitions. Second operand has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 16 states have internal predecessors, (62), 11 states have call successors, (13), 11 states have call predecessors, (13), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 13:52:28,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:28,351 INFO L93 Difference]: Finished difference Result 807 states and 950 transitions. [2023-02-15 13:52:28,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-02-15 13:52:28,352 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 16 states have internal predecessors, (62), 11 states have call successors, (13), 11 states have call predecessors, (13), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 56 [2023-02-15 13:52:28,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:28,354 INFO L225 Difference]: With dead ends: 807 [2023-02-15 13:52:28,355 INFO L226 Difference]: Without dead ends: 806 [2023-02-15 13:52:28,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1639 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1544, Invalid=4936, Unknown=0, NotChecked=0, Total=6480 [2023-02-15 13:52:28,357 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 399 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:28,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 108 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 13:52:28,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2023-02-15 13:52:28,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 410. [2023-02-15 13:52:28,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 307 states have (on average 1.1140065146579805) internal successors, (342), 308 states have internal predecessors, (342), 69 states have call successors, (69), 34 states have call predecessors, (69), 33 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) [2023-02-15 13:52:28,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 478 transitions. [2023-02-15 13:52:28,372 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 478 transitions. Word has length 56 [2023-02-15 13:52:28,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:28,372 INFO L495 AbstractCegarLoop]: Abstraction has 410 states and 478 transitions. [2023-02-15 13:52:28,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.2962962962962963) internal successors, (62), 16 states have internal predecessors, (62), 11 states have call successors, (13), 11 states have call predecessors, (13), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 13:52:28,372 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 478 transitions. [2023-02-15 13:52:28,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-02-15 13:52:28,373 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:28,373 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:28,383 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 13:52:28,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:28,580 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:28,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:28,580 INFO L85 PathProgramCache]: Analyzing trace with hash -760270738, now seen corresponding path program 4 times [2023-02-15 13:52:28,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:28,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506750862] [2023-02-15 13:52:28,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:28,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:28,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 13:52:28,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 75 proven. 255 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 13:52:28,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:28,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506750862] [2023-02-15 13:52:28,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506750862] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:28,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364369048] [2023-02-15 13:52:28,855 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 13:52:28,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:28,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:28,856 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 13:52:28,858 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 13:52:28,884 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 13:52:28,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:52:28,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-15 13:52:28,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:28,931 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2023-02-15 13:52:28,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:52:28,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364369048] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:28,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 13:52:28,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [25] total 30 [2023-02-15 13:52:28,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954163097] [2023-02-15 13:52:28,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:28,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 13:52:28,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:28,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 13:52:28,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=679, Unknown=0, NotChecked=0, Total=870 [2023-02-15 13:52:28,934 INFO L87 Difference]: Start difference. First operand 410 states and 478 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 13:52:28,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:28,982 INFO L93 Difference]: Finished difference Result 940 states and 1197 transitions. [2023-02-15 13:52:28,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 13:52:28,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2023-02-15 13:52:28,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:28,984 INFO L225 Difference]: With dead ends: 940 [2023-02-15 13:52:28,984 INFO L226 Difference]: Without dead ends: 643 [2023-02-15 13:52:28,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=263, Invalid=793, Unknown=0, NotChecked=0, Total=1056 [2023-02-15 13:52:28,987 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 4 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:28,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 60 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:28,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2023-02-15 13:52:29,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 608. [2023-02-15 13:52:29,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 440 states have (on average 1.0772727272727274) internal successors, (474), 472 states have internal predecessors, (474), 102 states have call successors, (102), 35 states have call predecessors, (102), 65 states have return successors, (133), 100 states have call predecessors, (133), 100 states have call successors, (133) [2023-02-15 13:52:29,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 709 transitions. [2023-02-15 13:52:29,009 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 709 transitions. Word has length 70 [2023-02-15 13:52:29,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:29,010 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 709 transitions. [2023-02-15 13:52:29,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-15 13:52:29,010 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 709 transitions. [2023-02-15 13:52:29,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-15 13:52:29,011 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:29,011 INFO L195 NwaCegarLoop]: trace histogram [15, 13, 12, 12, 12, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:29,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 13:52:29,217 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,SelfDestructingSolverStorable16 [2023-02-15 13:52:29,217 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:29,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:29,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1701536469, now seen corresponding path program 4 times [2023-02-15 13:52:29,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:29,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289164163] [2023-02-15 13:52:29,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:29,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:29,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:29,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 13:52:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:29,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:29,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:29,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:29,495 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 158 proven. 255 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-15 13:52:29,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:29,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289164163] [2023-02-15 13:52:29,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289164163] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:29,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [707466930] [2023-02-15 13:52:29,496 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 13:52:29,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:29,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:29,497 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 13:52:29,499 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 13:52:29,531 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 13:52:29,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:52:29,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-15 13:52:29,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:29,600 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 158 proven. 255 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-15 13:52:29,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:52:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 158 proven. 255 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-15 13:52:30,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [707466930] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:52:30,109 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:52:30,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2023-02-15 13:52:30,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779352944] [2023-02-15 13:52:30,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:52:30,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-15 13:52:30,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:30,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-15 13:52:30,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=566, Invalid=2086, Unknown=0, NotChecked=0, Total=2652 [2023-02-15 13:52:30,112 INFO L87 Difference]: Start difference. First operand 608 states and 709 transitions. Second operand has 52 states, 51 states have (on average 2.156862745098039) internal successors, (110), 28 states have internal predecessors, (110), 23 states have call successors, (25), 23 states have call predecessors, (25), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 13:52:32,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:32,326 INFO L93 Difference]: Finished difference Result 825 states and 973 transitions. [2023-02-15 13:52:32,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-02-15 13:52:32,327 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 2.156862745098039) internal successors, (110), 28 states have internal predecessors, (110), 23 states have call successors, (25), 23 states have call predecessors, (25), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) Word has length 86 [2023-02-15 13:52:32,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:32,330 INFO L225 Difference]: With dead ends: 825 [2023-02-15 13:52:32,330 INFO L226 Difference]: Without dead ends: 824 [2023-02-15 13:52:32,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7926 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=6524, Invalid=20536, Unknown=0, NotChecked=0, Total=27060 [2023-02-15 13:52:32,335 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 850 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:32,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 153 Invalid, 1418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-15 13:52:32,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2023-02-15 13:52:32,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 824. [2023-02-15 13:52:32,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 596 states have (on average 1.0771812080536913) internal successors, (642), 640 states have internal predecessors, (642), 138 states have call successors, (138), 47 states have call predecessors, (138), 89 states have return successors, (181), 136 states have call predecessors, (181), 136 states have call successors, (181) [2023-02-15 13:52:32,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 961 transitions. [2023-02-15 13:52:32,361 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 961 transitions. Word has length 86 [2023-02-15 13:52:32,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:32,361 INFO L495 AbstractCegarLoop]: Abstraction has 824 states and 961 transitions. [2023-02-15 13:52:32,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 2.156862745098039) internal successors, (110), 28 states have internal predecessors, (110), 23 states have call successors, (25), 23 states have call predecessors, (25), 3 states have return successors, (5), 5 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-15 13:52:32,361 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 961 transitions. [2023-02-15 13:52:32,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-02-15 13:52:32,366 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:32,366 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1, 1, 1] [2023-02-15 13:52:32,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-15 13:52:32,570 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,SelfDestructingSolverStorable17 [2023-02-15 13:52:32,570 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:32,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:32,571 INFO L85 PathProgramCache]: Analyzing trace with hash 2074912724, now seen corresponding path program 4 times [2023-02-15 13:52:32,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:32,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660564448] [2023-02-15 13:52:32,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:32,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:33,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:52:33,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:33,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660564448] [2023-02-15 13:52:33,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660564448] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:33,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271119120] [2023-02-15 13:52:33,366 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 13:52:33,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:33,366 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:33,367 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 13:52:33,367 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 13:52:33,405 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 13:52:33,405 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:52:33,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-15 13:52:33,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:33,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:52:33,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:52:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:52:34,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271119120] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:52:34,951 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:52:34,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2023-02-15 13:52:34,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818450161] [2023-02-15 13:52:34,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:52:34,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-02-15 13:52:34,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:34,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-02-15 13:52:34,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2023-02-15 13:52:34,955 INFO L87 Difference]: Start difference. First operand 824 states and 961 transitions. Second operand has 96 states, 93 states have (on average 2.0) internal successors, (186), 50 states have internal predecessors, (186), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:38,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:38,074 INFO L93 Difference]: Finished difference Result 1259 states and 1559 transitions. [2023-02-15 13:52:38,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2023-02-15 13:52:38,074 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 93 states have (on average 2.0) internal successors, (186), 50 states have internal predecessors, (186), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2023-02-15 13:52:38,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:38,078 INFO L225 Difference]: With dead ends: 1259 [2023-02-15 13:52:38,079 INFO L226 Difference]: Without dead ends: 1258 [2023-02-15 13:52:38,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 370 GetRequests, 185 SyntacticMatches, 1 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8243 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=10631, Invalid=23779, Unknown=0, NotChecked=0, Total=34410 [2023-02-15 13:52:38,082 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 2168 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 1330 mSolverCounterSat, 1211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 2541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1211 IncrementalHoareTripleChecker+Valid, 1330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:38,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 808 Invalid, 2541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1211 Valid, 1330 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-15 13:52:38,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2023-02-15 13:52:38,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 1256. [2023-02-15 13:52:38,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 908 states have (on average 1.077092511013216) internal successors, (978), 976 states have internal predecessors, (978), 210 states have call successors, (210), 71 states have call predecessors, (210), 137 states have return successors, (277), 208 states have call predecessors, (277), 208 states have call successors, (277) [2023-02-15 13:52:38,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1465 transitions. [2023-02-15 13:52:38,118 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1465 transitions. Word has length 117 [2023-02-15 13:52:38,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:38,118 INFO L495 AbstractCegarLoop]: Abstraction has 1256 states and 1465 transitions. [2023-02-15 13:52:38,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 93 states have (on average 2.0) internal successors, (186), 50 states have internal predecessors, (186), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:38,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1465 transitions. [2023-02-15 13:52:38,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-02-15 13:52:38,121 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:38,121 INFO L195 NwaCegarLoop]: trace histogram [27, 25, 24, 24, 24, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 13:52:38,125 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 13:52:38,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:38,326 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:38,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:38,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1006567189, now seen corresponding path program 5 times [2023-02-15 13:52:38,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:38,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242711693] [2023-02-15 13:52:38,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:38,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:39,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-15 13:52:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:39,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-15 13:52:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:39,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-15 13:52:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:39,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 326 proven. 1221 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-15 13:52:39,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:39,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242711693] [2023-02-15 13:52:39,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242711693] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:39,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747152594] [2023-02-15 13:52:39,202 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 13:52:39,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:39,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:39,203 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 13:52:39,205 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 13:52:39,242 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2023-02-15 13:52:39,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:52:39,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-15 13:52:39,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:39,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1564 backedges. 370 proven. 0 refuted. 0 times theorem prover too weak. 1194 trivial. 0 not checked. [2023-02-15 13:52:39,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 13:52:39,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747152594] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 13:52:39,333 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 13:52:39,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [50] total 56 [2023-02-15 13:52:39,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865186059] [2023-02-15 13:52:39,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 13:52:39,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 13:52:39,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:39,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 13:52:39,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=664, Invalid=2416, Unknown=0, NotChecked=0, Total=3080 [2023-02-15 13:52:39,335 INFO L87 Difference]: Start difference. First operand 1256 states and 1465 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 13:52:39,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:39,410 INFO L93 Difference]: Finished difference Result 1591 states and 1891 transitions. [2023-02-15 13:52:39,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 13:52:39,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 146 [2023-02-15 13:52:39,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:39,412 INFO L225 Difference]: With dead ends: 1591 [2023-02-15 13:52:39,413 INFO L226 Difference]: Without dead ends: 240 [2023-02-15 13:52:39,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=802, Invalid=2738, Unknown=0, NotChecked=0, Total=3540 [2023-02-15 13:52:39,416 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:39,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 64 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 13:52:39,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-02-15 13:52:39,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 238. [2023-02-15 13:52:39,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 190 states have (on average 1.0052631578947369) internal successors, (191), 190 states have internal predecessors, (191), 47 states have call successors, (47), 47 states have call predecessors, (47), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:39,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 238 transitions. [2023-02-15 13:52:39,427 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 238 transitions. Word has length 146 [2023-02-15 13:52:39,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:39,427 INFO L495 AbstractCegarLoop]: Abstraction has 238 states and 238 transitions. [2023-02-15 13:52:39,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 5 states have internal predecessors, (25), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-15 13:52:39,428 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 238 transitions. [2023-02-15 13:52:39,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2023-02-15 13:52:39,429 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:39,429 INFO L195 NwaCegarLoop]: trace histogram [47, 47, 46, 46, 46, 1, 1, 1, 1, 1] [2023-02-15 13:52:39,435 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 13:52:39,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:39,634 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:39,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:39,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1774419796, now seen corresponding path program 5 times [2023-02-15 13:52:39,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:39,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216028682] [2023-02-15 13:52:39,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:39,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:52:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:52:42,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:52:42,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216028682] [2023-02-15 13:52:42,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216028682] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:52:42,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013176137] [2023-02-15 13:52:42,621 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 13:52:42,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:52:42,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:52:42,622 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 13:52:42,625 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 13:52:42,728 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2023-02-15 13:52:42,728 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:52:42,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 96 conjunts are in the unsatisfiable core [2023-02-15 13:52:42,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:52:42,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:52:42,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:52:48,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5313 backedges. 0 proven. 5313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:52:48,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013176137] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:52:48,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:52:48,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2023-02-15 13:52:48,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763296648] [2023-02-15 13:52:48,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:52:48,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2023-02-15 13:52:48,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:52:48,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2023-02-15 13:52:48,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9124, Invalid=27548, Unknown=0, NotChecked=0, Total=36672 [2023-02-15 13:52:48,392 INFO L87 Difference]: Start difference. First operand 238 states and 238 transitions. Second operand has 192 states, 189 states have (on average 2.0) internal successors, (378), 98 states have internal predecessors, (378), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:53,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:52:53,513 INFO L93 Difference]: Finished difference Result 481 states and 528 transitions. [2023-02-15 13:52:53,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-02-15 13:52:53,516 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 189 states have (on average 2.0) internal successors, (378), 98 states have internal predecessors, (378), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 237 [2023-02-15 13:52:53,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:52:53,520 INFO L225 Difference]: With dead ends: 481 [2023-02-15 13:52:53,520 INFO L226 Difference]: Without dead ends: 480 [2023-02-15 13:52:53,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 662 GetRequests, 377 SyntacticMatches, 1 SemanticMatches, 284 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17484 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=22613, Invalid=58897, Unknown=0, NotChecked=0, Total=81510 [2023-02-15 13:52:53,525 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1457 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1457 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-15 13:52:53,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1457 Valid, 74 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-15 13:52:53,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 480 states. [2023-02-15 13:52:53,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 478. [2023-02-15 13:52:53,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 382 states have (on average 1.0026178010471205) internal successors, (383), 382 states have internal predecessors, (383), 95 states have call successors, (95), 95 states have call predecessors, (95), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:53,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 478 transitions. [2023-02-15 13:52:53,538 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 478 transitions. Word has length 237 [2023-02-15 13:52:53,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:52:53,538 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 478 transitions. [2023-02-15 13:52:53,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 189 states have (on average 2.0) internal successors, (378), 98 states have internal predecessors, (378), 94 states have call successors, (94), 94 states have call predecessors, (94), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:52:53,539 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 478 transitions. [2023-02-15 13:52:53,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2023-02-15 13:52:53,542 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:52:53,543 INFO L195 NwaCegarLoop]: trace histogram [95, 95, 94, 94, 94, 1, 1, 1, 1, 1] [2023-02-15 13:52:53,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-15 13:52:53,747 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,SelfDestructingSolverStorable20 [2023-02-15 13:52:53,748 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:52:53,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:52:53,748 INFO L85 PathProgramCache]: Analyzing trace with hash 750235220, now seen corresponding path program 6 times [2023-02-15 13:52:53,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:52:53,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907665534] [2023-02-15 13:52:53,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:52:53,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:52:53,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:53:06,389 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:53:06,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:53:06,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907665534] [2023-02-15 13:53:06,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907665534] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:53:06,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279030799] [2023-02-15 13:53:06,390 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 13:53:06,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:53:06,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:53:06,391 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 13:53:06,392 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 13:53:06,645 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2023-02-15 13:53:06,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 13:53:06,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 860 conjuncts, 192 conjunts are in the unsatisfiable core [2023-02-15 13:53:06,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:53:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:53:07,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 13:53:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 22137 backedges. 0 proven. 22137 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:53:27,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279030799] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 13:53:27,923 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-15 13:53:27,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2023-02-15 13:53:27,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62295653] [2023-02-15 13:53:27,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-15 13:53:27,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2023-02-15 13:53:27,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 13:53:27,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2023-02-15 13:53:27,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36676, Invalid=110396, Unknown=0, NotChecked=0, Total=147072 [2023-02-15 13:53:27,938 INFO L87 Difference]: Start difference. First operand 478 states and 478 transitions. Second operand has 384 states, 381 states have (on average 2.0) internal successors, (762), 194 states have internal predecessors, (762), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:53:56,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 13:53:56,051 INFO L93 Difference]: Finished difference Result 961 states and 1056 transitions. [2023-02-15 13:53:56,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2023-02-15 13:53:56,051 INFO L78 Accepts]: Start accepts. Automaton has has 384 states, 381 states have (on average 2.0) internal successors, (762), 194 states have internal predecessors, (762), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 477 [2023-02-15 13:53:56,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 13:53:56,056 INFO L225 Difference]: With dead ends: 961 [2023-02-15 13:53:56,056 INFO L226 Difference]: Without dead ends: 960 [2023-02-15 13:53:56,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1334 GetRequests, 761 SyntacticMatches, 1 SemanticMatches, 572 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71820 ImplicationChecksByTransitivity, 42.5s TimeCoverageRelationStatistics Valid=91301, Invalid=237601, Unknown=0, NotChecked=0, Total=328902 [2023-02-15 13:53:56,085 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 3601 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 1745 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3601 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-02-15 13:53:56,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3601 Valid, 65 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1745 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-02-15 13:53:56,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-02-15 13:53:56,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 958. [2023-02-15 13:53:56,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 766 states have (on average 1.0013054830287207) internal successors, (767), 766 states have internal predecessors, (767), 191 states have call successors, (191), 191 states have call predecessors, (191), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:53:56,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 958 transitions. [2023-02-15 13:53:56,110 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 958 transitions. Word has length 477 [2023-02-15 13:53:56,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 13:53:56,111 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 958 transitions. [2023-02-15 13:53:56,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 384 states, 381 states have (on average 2.0) internal successors, (762), 194 states have internal predecessors, (762), 190 states have call successors, (190), 190 states have call predecessors, (190), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-15 13:53:56,112 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 958 transitions. [2023-02-15 13:53:56,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2023-02-15 13:53:56,125 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 13:53:56,125 INFO L195 NwaCegarLoop]: trace histogram [191, 191, 190, 190, 190, 1, 1, 1, 1, 1] [2023-02-15 13:53:56,131 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 13:53:56,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-02-15 13:53:56,331 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2023-02-15 13:53:56,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 13:53:56,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1606028372, now seen corresponding path program 7 times [2023-02-15 13:53:56,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 13:53:56,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702892174] [2023-02-15 13:53:56,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 13:53:56,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 13:53:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:55:01,064 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:55:01,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 13:55:01,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702892174] [2023-02-15 13:55:01,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702892174] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 13:55:01,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113408539] [2023-02-15 13:55:01,065 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 13:55:01,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 13:55:01,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 13:55:01,067 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 13:55:01,069 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 13:55:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 13:55:01,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 1724 conjuncts, 384 conjunts are in the unsatisfiable core [2023-02-15 13:55:01,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 13:55:02,178 INFO L134 CoverageAnalysis]: Checked inductivity of 90345 backedges. 0 proven. 90345 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 13:55:02,178 INFO L328 TraceCheckSpWp]: Computing backward predicates...