./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loops-crafted-1/in-de31.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/loops-crafted-1/in-de31.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 28f1f7a35f3c64149ac63836a12126d2f43ea1d4c4384507ba9d3ae156113818 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 15:48:50,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 15:48:50,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 15:48:50,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 15:48:50,430 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 15:48:50,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 15:48:50,434 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 15:48:50,435 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 15:48:50,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 15:48:50,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 15:48:50,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 15:48:50,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 15:48:50,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 15:48:50,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 15:48:50,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 15:48:50,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 15:48:50,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 15:48:50,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 15:48:50,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 15:48:50,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 15:48:50,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 15:48:50,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 15:48:50,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 15:48:50,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 15:48:50,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 15:48:50,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 15:48:50,463 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 15:48:50,464 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 15:48:50,464 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 15:48:50,464 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 15:48:50,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 15:48:50,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 15:48:50,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 15:48:50,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 15:48:50,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 15:48:50,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 15:48:50,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 15:48:50,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 15:48:50,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 15:48:50,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 15:48:50,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 15:48:50,471 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 15:48:50,492 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 15:48:50,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 15:48:50,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 15:48:50,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 15:48:50,493 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 15:48:50,493 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 15:48:50,494 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 15:48:50,494 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 15:48:50,494 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 15:48:50,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 15:48:50,495 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 15:48:50,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 15:48:50,495 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 15:48:50,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 15:48:50,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 15:48:50,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 15:48:50,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 15:48:50,496 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 15:48:50,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 15:48:50,496 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 15:48:50,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 15:48:50,497 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 15:48:50,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 15:48:50,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 15:48:50,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 15:48:50,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 15:48:50,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 15:48:50,497 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 15:48:50,498 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 15:48:50,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 15:48:50,498 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 15:48:50,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 15:48:50,498 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 15:48:50,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 15:48:50,498 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 15:48:50,499 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 28f1f7a35f3c64149ac63836a12126d2f43ea1d4c4384507ba9d3ae156113818 [2023-02-18 15:48:50,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 15:48:50,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 15:48:50,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 15:48:50,713 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 15:48:50,713 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 15:48:50,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/in-de31.c [2023-02-18 15:48:51,804 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 15:48:51,922 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 15:48:51,923 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de31.c [2023-02-18 15:48:51,927 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ede92478/c590d9a481b54572913496cd5763a3e9/FLAG1f622d555 [2023-02-18 15:48:51,939 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ede92478/c590d9a481b54572913496cd5763a3e9 [2023-02-18 15:48:51,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 15:48:51,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 15:48:51,943 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 15:48:51,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 15:48:51,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 15:48:51,946 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 03:48:51" (1/1) ... [2023-02-18 15:48:51,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c1897ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:48:51, skipping insertion in model container [2023-02-18 15:48:51,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 03:48:51" (1/1) ... [2023-02-18 15:48:51,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 15:48:51,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 15:48:52,041 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de31.c[368,381] [2023-02-18 15:48:52,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 15:48:52,055 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 15:48:52,061 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/in-de31.c[368,381] [2023-02-18 15:48:52,063 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 15:48:52,071 INFO L208 MainTranslator]: Completed translation [2023-02-18 15:48:52,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:48:52 WrapperNode [2023-02-18 15:48:52,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 15:48:52,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 15:48:52,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 15:48:52,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 15:48:52,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:48:52" (1/1) ... [2023-02-18 15:48:52,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:48:52" (1/1) ... [2023-02-18 15:48:52,089 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2023-02-18 15:48:52,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 15:48:52,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 15:48:52,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 15:48:52,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 15:48:52,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:48:52" (1/1) ... [2023-02-18 15:48:52,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:48:52" (1/1) ... [2023-02-18 15:48:52,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:48:52" (1/1) ... [2023-02-18 15:48:52,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:48:52" (1/1) ... [2023-02-18 15:48:52,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:48:52" (1/1) ... [2023-02-18 15:48:52,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:48:52" (1/1) ... [2023-02-18 15:48:52,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:48:52" (1/1) ... [2023-02-18 15:48:52,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:48:52" (1/1) ... [2023-02-18 15:48:52,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 15:48:52,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 15:48:52,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 15:48:52,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 15:48:52,105 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:48:52" (1/1) ... [2023-02-18 15:48:52,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 15:48:52,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:48:52,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 15:48:52,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 15:48:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 15:48:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 15:48:52,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 15:48:52,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 15:48:52,213 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 15:48:52,214 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 15:48:52,334 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 15:48:52,337 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 15:48:52,339 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-18 15:48:52,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 03:48:52 BoogieIcfgContainer [2023-02-18 15:48:52,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 15:48:52,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 15:48:52,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 15:48:52,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 15:48:52,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 03:48:51" (1/3) ... [2023-02-18 15:48:52,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a91b4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 03:48:52, skipping insertion in model container [2023-02-18 15:48:52,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 03:48:52" (2/3) ... [2023-02-18 15:48:52,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a91b4a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 03:48:52, skipping insertion in model container [2023-02-18 15:48:52,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 03:48:52" (3/3) ... [2023-02-18 15:48:52,347 INFO L112 eAbstractionObserver]: Analyzing ICFG in-de31.c [2023-02-18 15:48:52,359 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 15:48:52,359 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 15:48:52,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 15:48:52,402 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;@18a49b5f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 15:48:52,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 15:48:52,405 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:52,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 15:48:52,409 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:48:52,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:48:52,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:48:52,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:48:52,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1157484939, now seen corresponding path program 1 times [2023-02-18 15:48:52,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:48:52,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541317822] [2023-02-18 15:48:52,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:48:52,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:48:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:48:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:48:52,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:48:52,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541317822] [2023-02-18 15:48:52,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541317822] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 15:48:52,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 15:48:52,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 15:48:52,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824748949] [2023-02-18 15:48:52,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 15:48:52,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 15:48:52,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:48:52,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 15:48:52,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-18 15:48:52,779 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.6666666666666667) internal successors, (20), 13 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:52,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:48:52,867 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2023-02-18 15:48:52,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 15:48:52,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-02-18 15:48:52,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:48:52,873 INFO L225 Difference]: With dead ends: 35 [2023-02-18 15:48:52,876 INFO L226 Difference]: Without dead ends: 11 [2023-02-18 15:48:52,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-02-18 15:48:52,880 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 29 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 15:48:52,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 40 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 15:48:52,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2023-02-18 15:48:52,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2023-02-18 15:48:52,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:52,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2023-02-18 15:48:52,901 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 9 [2023-02-18 15:48:52,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:48:52,901 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2023-02-18 15:48:52,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:52,902 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2023-02-18 15:48:52,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 15:48:52,902 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:48:52,902 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:48:52,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 15:48:52,903 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:48:52,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:48:52,903 INFO L85 PathProgramCache]: Analyzing trace with hash 722526704, now seen corresponding path program 1 times [2023-02-18 15:48:52,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:48:52,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609322949] [2023-02-18 15:48:52,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:48:52,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:48:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:48:52,987 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:48:52,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:48:52,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609322949] [2023-02-18 15:48:52,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609322949] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:48:52,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728991799] [2023-02-18 15:48:52,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:48:52,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:48:52,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:48:53,006 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:48:53,007 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 15:48:53,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:48:53,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 15:48:53,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:48:53,097 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:48:53,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:48:53,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:48:53,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728991799] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:48:53,128 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:48:53,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-02-18 15:48:53,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22468082] [2023-02-18 15:48:53,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:48:53,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-18 15:48:53,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:48:53,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-18 15:48:53,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-02-18 15:48:53,131 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:53,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:48:53,190 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2023-02-18 15:48:53,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-18 15:48:53,191 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-18 15:48:53,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:48:53,192 INFO L225 Difference]: With dead ends: 37 [2023-02-18 15:48:53,192 INFO L226 Difference]: Without dead ends: 32 [2023-02-18 15:48:53,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-02-18 15:48:53,195 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 33 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 15:48:53,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 32 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 15:48:53,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-18 15:48:53,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2023-02-18 15:48:53,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 22 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2023-02-18 15:48:53,202 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 10 [2023-02-18 15:48:53,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:48:53,202 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2023-02-18 15:48:53,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:53,203 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2023-02-18 15:48:53,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-18 15:48:53,204 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:48:53,204 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:48:53,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 15:48:53,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:48:53,409 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:48:53,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:48:53,410 INFO L85 PathProgramCache]: Analyzing trace with hash 19581631, now seen corresponding path program 1 times [2023-02-18 15:48:53,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:48:53,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384070775] [2023-02-18 15:48:53,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:48:53,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:48:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:48:53,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:48:53,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:48:53,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384070775] [2023-02-18 15:48:53,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384070775] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:48:53,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207065721] [2023-02-18 15:48:53,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:48:53,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:48:53,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:48:53,697 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:48:53,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 15:48:53,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:48:53,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-18 15:48:53,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:48:53,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:48:53,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:48:54,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:48:54,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207065721] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:48:54,026 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:48:54,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 19 [2023-02-18 15:48:54,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405195150] [2023-02-18 15:48:54,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:48:54,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-18 15:48:54,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:48:54,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-18 15:48:54,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-02-18 15:48:54,031 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 19 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:54,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:48:54,637 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2023-02-18 15:48:54,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-18 15:48:54,638 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-18 15:48:54,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:48:54,639 INFO L225 Difference]: With dead ends: 59 [2023-02-18 15:48:54,639 INFO L226 Difference]: Without dead ends: 43 [2023-02-18 15:48:54,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=276, Invalid=1130, Unknown=0, NotChecked=0, Total=1406 [2023-02-18 15:48:54,640 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 91 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 15:48:54,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 40 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 15:48:54,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-18 15:48:54,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 20. [2023-02-18 15:48:54,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.368421052631579) internal successors, (26), 19 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:54,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 26 transitions. [2023-02-18 15:48:54,645 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 26 transitions. Word has length 12 [2023-02-18 15:48:54,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:48:54,646 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 26 transitions. [2023-02-18 15:48:54,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:54,646 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 26 transitions. [2023-02-18 15:48:54,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 15:48:54,646 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:48:54,646 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:48:54,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 15:48:54,851 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,SelfDestructingSolverStorable2 [2023-02-18 15:48:54,851 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:48:54,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:48:54,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1563380427, now seen corresponding path program 2 times [2023-02-18 15:48:54,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:48:54,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081502170] [2023-02-18 15:48:54,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:48:54,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:48:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:48:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:48:54,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:48:54,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081502170] [2023-02-18 15:48:54,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081502170] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:48:54,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89253954] [2023-02-18 15:48:54,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 15:48:54,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:48:54,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:48:54,933 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:48:54,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 15:48:54,978 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 15:48:54,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:48:54,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-18 15:48:54,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:48:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:48:55,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:48:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:48:55,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89253954] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:48:55,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:48:55,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-02-18 15:48:55,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691521761] [2023-02-18 15:48:55,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:48:55,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-18 15:48:55,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:48:55,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-18 15:48:55,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-02-18 15:48:55,070 INFO L87 Difference]: Start difference. First operand 20 states and 26 transitions. Second operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:55,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:48:55,442 INFO L93 Difference]: Finished difference Result 75 states and 115 transitions. [2023-02-18 15:48:55,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-18 15:48:55,442 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-18 15:48:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:48:55,443 INFO L225 Difference]: With dead ends: 75 [2023-02-18 15:48:55,443 INFO L226 Difference]: Without dead ends: 70 [2023-02-18 15:48:55,444 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 14 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2023-02-18 15:48:55,444 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 175 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 15:48:55,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 66 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 15:48:55,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-02-18 15:48:55,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 39. [2023-02-18 15:48:55,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.394736842105263) internal successors, (53), 38 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:55,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 53 transitions. [2023-02-18 15:48:55,455 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 53 transitions. Word has length 13 [2023-02-18 15:48:55,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:48:55,456 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 53 transitions. [2023-02-18 15:48:55,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 15 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:55,460 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 53 transitions. [2023-02-18 15:48:55,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-18 15:48:55,461 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:48:55,461 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:48:55,466 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-18 15:48:55,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:48:55,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:48:55,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:48:55,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1098222449, now seen corresponding path program 2 times [2023-02-18 15:48:55,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:48:55,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760101954] [2023-02-18 15:48:55,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:48:55,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:48:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:48:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 15:48:55,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:48:55,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760101954] [2023-02-18 15:48:55,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760101954] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:48:55,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646784018] [2023-02-18 15:48:55,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 15:48:55,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:48:55,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:48:55,715 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:48:55,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 15:48:55,752 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 15:48:55,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:48:55,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 15:48:55,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:48:55,771 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 15:48:55,771 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:48:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 15:48:55,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646784018] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:48:55,800 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:48:55,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-02-18 15:48:55,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722166569] [2023-02-18 15:48:55,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:48:55,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-18 15:48:55,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:48:55,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-18 15:48:55,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-02-18 15:48:55,801 INFO L87 Difference]: Start difference. First operand 39 states and 53 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:55,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:48:55,884 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2023-02-18 15:48:55,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-18 15:48:55,885 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-18 15:48:55,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:48:55,885 INFO L225 Difference]: With dead ends: 72 [2023-02-18 15:48:55,886 INFO L226 Difference]: Without dead ends: 62 [2023-02-18 15:48:55,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-02-18 15:48:55,886 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 19 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 15:48:55,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 34 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 15:48:55,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-02-18 15:48:55,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2023-02-18 15:48:55,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 45 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:55,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 64 transitions. [2023-02-18 15:48:55,896 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 64 transitions. Word has length 14 [2023-02-18 15:48:55,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:48:55,897 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 64 transitions. [2023-02-18 15:48:55,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:55,897 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 64 transitions. [2023-02-18 15:48:55,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 15:48:55,897 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:48:55,897 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:48:55,918 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-18 15:48:56,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:48:56,102 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:48:56,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:48:56,103 INFO L85 PathProgramCache]: Analyzing trace with hash 854515253, now seen corresponding path program 3 times [2023-02-18 15:48:56,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:48:56,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546515240] [2023-02-18 15:48:56,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:48:56,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:48:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:48:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:48:56,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:48:56,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546515240] [2023-02-18 15:48:56,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546515240] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:48:56,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289547124] [2023-02-18 15:48:56,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 15:48:56,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:48:56,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:48:56,322 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:48:56,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 15:48:56,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-18 15:48:56,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:48:56,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-18 15:48:56,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:48:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:48:56,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:48:56,637 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:48:56,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289547124] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:48:56,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:48:56,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 25 [2023-02-18 15:48:56,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711000371] [2023-02-18 15:48:56,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:48:56,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-02-18 15:48:56,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:48:56,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-02-18 15:48:56,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2023-02-18 15:48:56,639 INFO L87 Difference]: Start difference. First operand 46 states and 64 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:57,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:48:57,130 INFO L93 Difference]: Finished difference Result 97 states and 120 transitions. [2023-02-18 15:48:57,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-02-18 15:48:57,131 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-18 15:48:57,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:48:57,131 INFO L225 Difference]: With dead ends: 97 [2023-02-18 15:48:57,131 INFO L226 Difference]: Without dead ends: 73 [2023-02-18 15:48:57,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 13 SyntacticMatches, 4 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 460 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=264, Invalid=1628, Unknown=0, NotChecked=0, Total=1892 [2023-02-18 15:48:57,132 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 52 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 15:48:57,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 89 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 15:48:57,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-02-18 15:48:57,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 46. [2023-02-18 15:48:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.4) internal successors, (63), 45 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:57,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2023-02-18 15:48:57,142 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 15 [2023-02-18 15:48:57,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:48:57,142 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2023-02-18 15:48:57,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:57,143 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2023-02-18 15:48:57,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 15:48:57,143 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:48:57,143 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:48:57,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 15:48:57,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:48:57,348 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:48:57,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:48:57,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1966551549, now seen corresponding path program 4 times [2023-02-18 15:48:57,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:48:57,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487756297] [2023-02-18 15:48:57,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:48:57,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:48:57,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:48:57,399 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 15:48:57,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:48:57,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487756297] [2023-02-18 15:48:57,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487756297] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:48:57,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176181836] [2023-02-18 15:48:57,400 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 15:48:57,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:48:57,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:48:57,402 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:48:57,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 15:48:57,430 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 15:48:57,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:48:57,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-18 15:48:57,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:48:57,457 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 15:48:57,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:48:57,522 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 15:48:57,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176181836] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:48:57,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:48:57,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2023-02-18 15:48:57,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645946615] [2023-02-18 15:48:57,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:48:57,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-18 15:48:57,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:48:57,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-18 15:48:57,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-02-18 15:48:57,524 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:57,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:48:57,723 INFO L93 Difference]: Finished difference Result 84 states and 110 transitions. [2023-02-18 15:48:57,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-02-18 15:48:57,723 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-18 15:48:57,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:48:57,724 INFO L225 Difference]: With dead ends: 84 [2023-02-18 15:48:57,724 INFO L226 Difference]: Without dead ends: 69 [2023-02-18 15:48:57,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=405, Unknown=0, NotChecked=0, Total=506 [2023-02-18 15:48:57,725 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 24 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 15:48:57,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 81 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 15:48:57,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-02-18 15:48:57,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 51. [2023-02-18 15:48:57,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.38) internal successors, (69), 50 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:57,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2023-02-18 15:48:57,748 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 17 [2023-02-18 15:48:57,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:48:57,748 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2023-02-18 15:48:57,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 18 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:48:57,748 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2023-02-18 15:48:57,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-18 15:48:57,749 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:48:57,749 INFO L195 NwaCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:48:57,769 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-18 15:48:57,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:48:57,954 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:48:57,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:48:57,955 INFO L85 PathProgramCache]: Analyzing trace with hash -73381852, now seen corresponding path program 5 times [2023-02-18 15:48:57,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:48:57,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879808468] [2023-02-18 15:48:57,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:48:57,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:48:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:48:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 15:48:58,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:48:58,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879808468] [2023-02-18 15:48:58,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879808468] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:48:58,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758820403] [2023-02-18 15:48:58,056 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 15:48:58,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:48:58,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:48:58,057 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) [2023-02-18 15:48:58,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 15:48:58,105 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-02-18 15:48:58,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:48:58,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-18 15:48:58,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:48:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 15:48:58,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:48:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 15:48:58,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758820403] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:48:58,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:48:58,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2023-02-18 15:48:58,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202397933] [2023-02-18 15:48:58,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:48:58,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-18 15:48:58,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:48:58,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-18 15:48:58,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2023-02-18 15:48:58,290 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:00,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:49:00,567 INFO L93 Difference]: Finished difference Result 154 states and 221 transitions. [2023-02-18 15:49:00,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-02-18 15:49:00,568 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2023-02-18 15:49:00,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:49:00,568 INFO L225 Difference]: With dead ends: 154 [2023-02-18 15:49:00,569 INFO L226 Difference]: Without dead ends: 145 [2023-02-18 15:49:00,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 17 SyntacticMatches, 8 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1699 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1418, Invalid=3838, Unknown=0, NotChecked=0, Total=5256 [2023-02-18 15:49:00,571 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 370 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 15:49:00,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 119 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 15:49:00,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-02-18 15:49:00,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 71. [2023-02-18 15:49:00,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4) internal successors, (98), 70 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:00,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 98 transitions. [2023-02-18 15:49:00,602 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 98 transitions. Word has length 17 [2023-02-18 15:49:00,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:49:00,602 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 98 transitions. [2023-02-18 15:49:00,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:00,602 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 98 transitions. [2023-02-18 15:49:00,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-18 15:49:00,606 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:49:00,606 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:49:00,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-18 15:49:00,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:49:00,811 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:49:00,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:49:00,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1333529985, now seen corresponding path program 6 times [2023-02-18 15:49:00,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:49:00,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050128977] [2023-02-18 15:49:00,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:49:00,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:49:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:49:01,042 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:49:01,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:49:01,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050128977] [2023-02-18 15:49:01,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050128977] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:49:01,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077539757] [2023-02-18 15:49:01,042 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 15:49:01,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:49:01,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:49:01,065 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) [2023-02-18 15:49:01,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 15:49:01,123 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-02-18 15:49:01,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:49:01,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-18 15:49:01,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:49:01,342 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:49:01,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:49:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:49:01,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2077539757] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:49:01,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:49:01,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 12] total 31 [2023-02-18 15:49:01,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143294723] [2023-02-18 15:49:01,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:49:01,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-02-18 15:49:01,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:49:01,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-02-18 15:49:01,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2023-02-18 15:49:01,654 INFO L87 Difference]: Start difference. First operand 71 states and 98 transitions. Second operand has 31 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:02,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:49:02,535 INFO L93 Difference]: Finished difference Result 126 states and 159 transitions. [2023-02-18 15:49:02,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-02-18 15:49:02,535 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-18 15:49:02,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:49:02,536 INFO L225 Difference]: With dead ends: 126 [2023-02-18 15:49:02,536 INFO L226 Difference]: Without dead ends: 99 [2023-02-18 15:49:02,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 15 SyntacticMatches, 5 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=332, Invalid=2320, Unknown=0, NotChecked=0, Total=2652 [2023-02-18 15:49:02,537 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 65 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 15:49:02,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 120 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 15:49:02,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2023-02-18 15:49:02,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 70. [2023-02-18 15:49:02,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.3768115942028984) internal successors, (95), 69 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:02,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 95 transitions. [2023-02-18 15:49:02,585 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 95 transitions. Word has length 18 [2023-02-18 15:49:02,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:49:02,586 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 95 transitions. [2023-02-18 15:49:02,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:02,586 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 95 transitions. [2023-02-18 15:49:02,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 15:49:02,586 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:49:02,586 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:49:02,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-18 15:49:02,791 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,SelfDestructingSolverStorable8 [2023-02-18 15:49:02,792 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:49:02,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:49:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash 159423631, now seen corresponding path program 7 times [2023-02-18 15:49:02,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:49:02,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813070305] [2023-02-18 15:49:02,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:49:02,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:49:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:49:02,871 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-18 15:49:02,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:49:02,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813070305] [2023-02-18 15:49:02,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813070305] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:49:02,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1257949954] [2023-02-18 15:49:02,871 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 15:49:02,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:49:02,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:49:02,873 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) [2023-02-18 15:49:02,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 15:49:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:49:02,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-18 15:49:02,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:49:02,977 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-18 15:49:02,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:49:03,070 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-18 15:49:03,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1257949954] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:49:03,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:49:03,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 23 [2023-02-18 15:49:03,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182286292] [2023-02-18 15:49:03,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:49:03,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-18 15:49:03,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:49:03,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-18 15:49:03,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2023-02-18 15:49:03,072 INFO L87 Difference]: Start difference. First operand 70 states and 95 transitions. Second operand has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:03,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:49:03,357 INFO L93 Difference]: Finished difference Result 119 states and 158 transitions. [2023-02-18 15:49:03,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-18 15:49:03,357 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-18 15:49:03,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:49:03,358 INFO L225 Difference]: With dead ends: 119 [2023-02-18 15:49:03,358 INFO L226 Difference]: Without dead ends: 101 [2023-02-18 15:49:03,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=144, Invalid=668, Unknown=0, NotChecked=0, Total=812 [2023-02-18 15:49:03,359 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 34 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 15:49:03,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 90 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 15:49:03,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-18 15:49:03,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 77. [2023-02-18 15:49:03,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 76 states have (on average 1.381578947368421) internal successors, (105), 76 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:03,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 105 transitions. [2023-02-18 15:49:03,375 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 105 transitions. Word has length 20 [2023-02-18 15:49:03,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:49:03,375 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 105 transitions. [2023-02-18 15:49:03,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 23 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:03,375 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 105 transitions. [2023-02-18 15:49:03,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-18 15:49:03,377 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:49:03,377 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:49:03,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-18 15:49:03,581 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,SelfDestructingSolverStorable9 [2023-02-18 15:49:03,582 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:49:03,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:49:03,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2017092107, now seen corresponding path program 8 times [2023-02-18 15:49:03,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:49:03,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812624918] [2023-02-18 15:49:03,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:49:03,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:49:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:49:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:49:03,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:49:03,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812624918] [2023-02-18 15:49:03,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812624918] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:49:03,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939059000] [2023-02-18 15:49:03,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 15:49:03,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:49:03,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:49:03,961 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) [2023-02-18 15:49:04,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 15:49:04,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 15:49:04,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:49:04,050 WARN L261 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 53 conjunts are in the unsatisfiable core [2023-02-18 15:49:04,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:49:04,376 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:49:04,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:49:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:49:04,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939059000] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:49:04,745 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:49:04,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 14] total 41 [2023-02-18 15:49:04,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581871926] [2023-02-18 15:49:04,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:49:04,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-02-18 15:49:04,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:49:04,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-02-18 15:49:04,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1449, Unknown=0, NotChecked=0, Total=1640 [2023-02-18 15:49:04,747 INFO L87 Difference]: Start difference. First operand 77 states and 105 transitions. Second operand has 41 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 41 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:06,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:49:06,907 INFO L93 Difference]: Finished difference Result 143 states and 178 transitions. [2023-02-18 15:49:06,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-02-18 15:49:06,908 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 41 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2023-02-18 15:49:06,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:49:06,909 INFO L225 Difference]: With dead ends: 143 [2023-02-18 15:49:06,909 INFO L226 Difference]: Without dead ends: 109 [2023-02-18 15:49:06,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1118 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=483, Invalid=3677, Unknown=0, NotChecked=0, Total=4160 [2023-02-18 15:49:06,910 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 78 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-18 15:49:06,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 176 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 656 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-02-18 15:49:06,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-02-18 15:49:06,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 71. [2023-02-18 15:49:06,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4) internal successors, (98), 70 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:06,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 98 transitions. [2023-02-18 15:49:06,927 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 98 transitions. Word has length 21 [2023-02-18 15:49:06,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:49:06,927 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 98 transitions. [2023-02-18 15:49:06,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.3902439024390243) internal successors, (57), 41 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:06,928 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 98 transitions. [2023-02-18 15:49:06,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-18 15:49:06,928 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:49:06,928 INFO L195 NwaCegarLoop]: trace histogram [7, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:49:06,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 15:49:07,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-18 15:49:07,133 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:49:07,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:49:07,133 INFO L85 PathProgramCache]: Analyzing trace with hash 2027051824, now seen corresponding path program 9 times [2023-02-18 15:49:07,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:49:07,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226183272] [2023-02-18 15:49:07,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:49:07,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:49:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:49:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 15:49:07,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:49:07,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226183272] [2023-02-18 15:49:07,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226183272] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:49:07,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914285759] [2023-02-18 15:49:07,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 15:49:07,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:49:07,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:49:07,289 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) [2023-02-18 15:49:07,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-18 15:49:07,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-18 15:49:07,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:49:07,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 15:49:07,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:49:07,435 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-02-18 15:49:07,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:49:07,488 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-02-18 15:49:07,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914285759] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:49:07,488 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:49:07,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 8] total 24 [2023-02-18 15:49:07,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488140209] [2023-02-18 15:49:07,488 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:49:07,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-18 15:49:07,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:49:07,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-18 15:49:07,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2023-02-18 15:49:07,489 INFO L87 Difference]: Start difference. First operand 71 states and 98 transitions. Second operand has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:08,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:49:08,075 INFO L93 Difference]: Finished difference Result 128 states and 170 transitions. [2023-02-18 15:49:08,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-02-18 15:49:08,076 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-18 15:49:08,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:49:08,076 INFO L225 Difference]: With dead ends: 128 [2023-02-18 15:49:08,076 INFO L226 Difference]: Without dead ends: 115 [2023-02-18 15:49:08,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=428, Invalid=1828, Unknown=0, NotChecked=0, Total=2256 [2023-02-18 15:49:08,078 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 118 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 563 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 15:49:08,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 132 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 563 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 15:49:08,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-02-18 15:49:08,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 78. [2023-02-18 15:49:08,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 77 states have (on average 1.2987012987012987) internal successors, (100), 77 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:08,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2023-02-18 15:49:08,096 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 22 [2023-02-18 15:49:08,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:49:08,097 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2023-02-18 15:49:08,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:08,097 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2023-02-18 15:49:08,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-18 15:49:08,097 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:49:08,098 INFO L195 NwaCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:49:08,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-18 15:49:08,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-18 15:49:08,302 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:49:08,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:49:08,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1622674000, now seen corresponding path program 3 times [2023-02-18 15:49:08,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:49:08,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785639447] [2023-02-18 15:49:08,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:49:08,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:49:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:49:08,507 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:49:08,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:49:08,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785639447] [2023-02-18 15:49:08,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785639447] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:49:08,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143735309] [2023-02-18 15:49:08,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 15:49:08,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:49:08,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:49:08,514 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) [2023-02-18 15:49:08,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-18 15:49:08,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-02-18 15:49:08,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:49:08,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-18 15:49:08,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:49:08,750 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:49:08,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:49:09,013 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:49:09,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [143735309] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:49:09,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:49:09,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2023-02-18 15:49:09,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139925344] [2023-02-18 15:49:09,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:49:09,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-18 15:49:09,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:49:09,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-18 15:49:09,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=261, Invalid=795, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 15:49:09,018 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:36,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:49:36,076 INFO L93 Difference]: Finished difference Result 396 states and 538 transitions. [2023-02-18 15:49:36,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-02-18 15:49:36,077 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2023-02-18 15:49:36,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:49:36,078 INFO L225 Difference]: With dead ends: 396 [2023-02-18 15:49:36,078 INFO L226 Difference]: Without dead ends: 369 [2023-02-18 15:49:36,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 14 SyntacticMatches, 15 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1629 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=2044, Invalid=4598, Unknown=0, NotChecked=0, Total=6642 [2023-02-18 15:49:36,080 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 932 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 802 mSolverCounterSat, 410 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 410 IncrementalHoareTripleChecker+Valid, 802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-18 15:49:36,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 355 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [410 Valid, 802 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-18 15:49:36,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2023-02-18 15:49:36,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 117. [2023-02-18 15:49:36,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 116 states have (on average 1.3448275862068966) internal successors, (156), 116 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:36,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 156 transitions. [2023-02-18 15:49:36,108 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 156 transitions. Word has length 22 [2023-02-18 15:49:36,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:49:36,109 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 156 transitions. [2023-02-18 15:49:36,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:36,109 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 156 transitions. [2023-02-18 15:49:36,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-18 15:49:36,109 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:49:36,109 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:49:36,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-18 15:49:36,315 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,SelfDestructingSolverStorable12 [2023-02-18 15:49:36,315 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:49:36,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:49:36,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1589406077, now seen corresponding path program 10 times [2023-02-18 15:49:36,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:49:36,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050608268] [2023-02-18 15:49:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:49:36,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:49:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:49:36,401 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 15:49:36,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:49:36,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050608268] [2023-02-18 15:49:36,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050608268] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:49:36,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [273769769] [2023-02-18 15:49:36,402 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 15:49:36,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:49:36,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:49:36,403 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) [2023-02-18 15:49:36,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-18 15:49:36,455 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 15:49:36,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:49:36,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-18 15:49:36,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:49:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 15:49:36,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:49:36,670 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 15:49:36,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [273769769] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:49:36,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:49:36,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 12] total 28 [2023-02-18 15:49:36,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352864634] [2023-02-18 15:49:36,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:49:36,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-18 15:49:36,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:49:36,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-18 15:49:36,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2023-02-18 15:49:36,671 INFO L87 Difference]: Start difference. First operand 117 states and 156 transitions. Second operand has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:37,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:49:37,149 INFO L93 Difference]: Finished difference Result 209 states and 262 transitions. [2023-02-18 15:49:37,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-02-18 15:49:37,149 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-02-18 15:49:37,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:49:37,150 INFO L225 Difference]: With dead ends: 209 [2023-02-18 15:49:37,150 INFO L226 Difference]: Without dead ends: 160 [2023-02-18 15:49:37,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=194, Invalid=996, Unknown=0, NotChecked=0, Total=1190 [2023-02-18 15:49:37,151 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 36 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 15:49:37,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 88 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 15:49:37,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-02-18 15:49:37,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 131. [2023-02-18 15:49:37,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.323076923076923) internal successors, (172), 130 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:37,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 172 transitions. [2023-02-18 15:49:37,185 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 172 transitions. Word has length 23 [2023-02-18 15:49:37,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:49:37,185 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 172 transitions. [2023-02-18 15:49:37,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.3928571428571428) internal successors, (39), 28 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:37,186 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 172 transitions. [2023-02-18 15:49:37,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-18 15:49:37,187 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:49:37,187 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:49:37,197 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-18 15:49:37,392 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,SelfDestructingSolverStorable13 [2023-02-18 15:49:37,392 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:49:37,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:49:37,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1230457407, now seen corresponding path program 11 times [2023-02-18 15:49:37,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:49:37,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852429679] [2023-02-18 15:49:37,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:49:37,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:49:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:49:37,793 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:49:37,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:49:37,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852429679] [2023-02-18 15:49:37,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852429679] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:49:37,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156647283] [2023-02-18 15:49:37,793 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 15:49:37,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:49:37,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:49:37,795 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) [2023-02-18 15:49:37,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-02-18 15:49:37,937 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-02-18 15:49:37,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:49:37,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 56 conjunts are in the unsatisfiable core [2023-02-18 15:49:37,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:49:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:49:42,508 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:49:43,601 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:49:43,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156647283] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:49:43,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:49:43,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 17] total 43 [2023-02-18 15:49:43,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556043858] [2023-02-18 15:49:43,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:49:43,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-02-18 15:49:43,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:49:43,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-02-18 15:49:43,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1621, Unknown=0, NotChecked=0, Total=1806 [2023-02-18 15:49:43,603 INFO L87 Difference]: Start difference. First operand 131 states and 172 transitions. Second operand has 43 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 43 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:50,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-18 15:49:52,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-02-18 15:49:56,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:49:56,166 INFO L93 Difference]: Finished difference Result 212 states and 257 transitions. [2023-02-18 15:49:56,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-02-18 15:49:56,166 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 43 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-18 15:49:56,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:49:56,168 INFO L225 Difference]: With dead ends: 212 [2023-02-18 15:49:56,169 INFO L226 Difference]: Without dead ends: 182 [2023-02-18 15:49:56,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 19 SyntacticMatches, 7 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1219 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=540, Invalid=4430, Unknown=0, NotChecked=0, Total=4970 [2023-02-18 15:49:56,171 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 94 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 41 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2023-02-18 15:49:56,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 140 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 656 Invalid, 1 Unknown, 0 Unchecked, 6.1s Time] [2023-02-18 15:49:56,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-02-18 15:49:56,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 119. [2023-02-18 15:49:56,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 118 states have (on average 1.3305084745762712) internal successors, (157), 118 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:56,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 157 transitions. [2023-02-18 15:49:56,207 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 157 transitions. Word has length 24 [2023-02-18 15:49:56,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:49:56,208 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 157 transitions. [2023-02-18 15:49:56,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.5116279069767442) internal successors, (65), 43 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:49:56,209 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 157 transitions. [2023-02-18 15:49:56,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-18 15:49:56,209 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:49:56,209 INFO L195 NwaCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:49:56,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-02-18 15:49:56,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:49:56,415 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:49:56,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:49:56,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1431729572, now seen corresponding path program 12 times [2023-02-18 15:49:56,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:49:56,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118803311] [2023-02-18 15:49:56,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:49:56,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:49:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:49:56,591 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 15:49:56,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:49:56,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118803311] [2023-02-18 15:49:56,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118803311] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:49:56,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416330713] [2023-02-18 15:49:56,591 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 15:49:56,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:49:56,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:49:56,601 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:49:56,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-02-18 15:49:56,760 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-02-18 15:49:56,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:49:56,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-18 15:49:56,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:49:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 15:49:56,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:49:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 0 proven. 106 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 15:49:57,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416330713] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:49:57,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:49:57,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 37 [2023-02-18 15:49:57,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657335] [2023-02-18 15:49:57,343 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:49:57,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-02-18 15:49:57,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:49:57,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-02-18 15:49:57,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=1030, Unknown=0, NotChecked=0, Total=1332 [2023-02-18 15:49:57,344 INFO L87 Difference]: Start difference. First operand 119 states and 157 transitions. Second operand has 37 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 37 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:50:29,489 WARN L837 $PredicateComparison]: unable to prove that (and (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 8) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967295) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 7) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 9) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 12) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 5) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 6) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 1) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 10) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 11) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967295) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 13) 4294967296) 0) (> (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 3) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296) 0)) is different from false [2023-02-18 15:51:28,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:51:28,044 INFO L93 Difference]: Finished difference Result 462 states and 607 transitions. [2023-02-18 15:51:28,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2023-02-18 15:51:28,045 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 37 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2023-02-18 15:51:28,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:51:28,046 INFO L225 Difference]: With dead ends: 462 [2023-02-18 15:51:28,046 INFO L226 Difference]: Without dead ends: 445 [2023-02-18 15:51:28,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 17 SyntacticMatches, 16 SemanticMatches, 150 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8320 ImplicationChecksByTransitivity, 88.4s TimeCoverageRelationStatistics Valid=6205, Invalid=16448, Unknown=1, NotChecked=298, Total=22952 [2023-02-18 15:51:28,051 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 1116 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 441 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 1423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 441 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-02-18 15:51:28,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 411 Invalid, 1423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [441 Valid, 981 Invalid, 0 Unknown, 1 Unchecked, 2.6s Time] [2023-02-18 15:51:28,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2023-02-18 15:51:28,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 132. [2023-02-18 15:51:28,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 1.3282442748091603) internal successors, (174), 131 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:51:28,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 174 transitions. [2023-02-18 15:51:28,097 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 174 transitions. Word has length 25 [2023-02-18 15:51:28,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:51:28,097 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 174 transitions. [2023-02-18 15:51:28,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 37 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:51:28,098 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 174 transitions. [2023-02-18 15:51:28,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-18 15:51:28,098 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:51:28,098 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:51:28,109 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-02-18 15:51:28,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-02-18 15:51:28,308 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:51:28,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:51:28,308 INFO L85 PathProgramCache]: Analyzing trace with hash -40778609, now seen corresponding path program 13 times [2023-02-18 15:51:28,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:51:28,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133042486] [2023-02-18 15:51:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:51:28,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:51:28,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:51:28,422 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-18 15:51:28,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:51:28,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133042486] [2023-02-18 15:51:28,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133042486] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:51:28,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995672470] [2023-02-18 15:51:28,423 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 15:51:28,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:51:28,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:51:28,424 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:51:28,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-02-18 15:51:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:51:28,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-18 15:51:28,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:51:28,558 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-18 15:51:28,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:51:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-02-18 15:51:28,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995672470] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:51:28,756 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:51:28,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 14] total 33 [2023-02-18 15:51:28,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659706170] [2023-02-18 15:51:28,757 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:51:28,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-18 15:51:28,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:51:28,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-18 15:51:28,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 15:51:28,760 INFO L87 Difference]: Start difference. First operand 132 states and 174 transitions. Second operand has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:51:29,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:51:29,629 INFO L93 Difference]: Finished difference Result 242 states and 301 transitions. [2023-02-18 15:51:29,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-18 15:51:29,629 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-02-18 15:51:29,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:51:29,630 INFO L225 Difference]: With dead ends: 242 [2023-02-18 15:51:29,630 INFO L226 Difference]: Without dead ends: 180 [2023-02-18 15:51:29,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 27 SyntacticMatches, 8 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=251, Invalid=1389, Unknown=0, NotChecked=0, Total=1640 [2023-02-18 15:51:29,631 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 15:51:29,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 101 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 15:51:29,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-02-18 15:51:29,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 148. [2023-02-18 15:51:29,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 1.3061224489795917) internal successors, (192), 147 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:51:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 192 transitions. [2023-02-18 15:51:29,683 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 192 transitions. Word has length 26 [2023-02-18 15:51:29,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:51:29,683 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 192 transitions. [2023-02-18 15:51:29,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 33 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:51:29,683 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 192 transitions. [2023-02-18 15:51:29,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-18 15:51:29,684 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:51:29,684 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:51:29,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-02-18 15:51:29,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-02-18 15:51:29,889 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:51:29,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:51:29,889 INFO L85 PathProgramCache]: Analyzing trace with hash 881225141, now seen corresponding path program 14 times [2023-02-18 15:51:29,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:51:29,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631697598] [2023-02-18 15:51:29,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:51:29,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:51:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:51:30,605 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:51:30,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:51:30,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631697598] [2023-02-18 15:51:30,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631697598] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:51:30,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248168346] [2023-02-18 15:51:30,605 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 15:51:30,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:51:30,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:51:30,606 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:51:30,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-02-18 15:51:30,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 15:51:30,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:51:30,724 WARN L261 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 73 conjunts are in the unsatisfiable core [2023-02-18 15:51:30,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:51:31,353 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:51:31,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:51:32,144 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:51:32,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248168346] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:51:32,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:51:32,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 24, 18] total 55 [2023-02-18 15:51:32,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779175058] [2023-02-18 15:51:32,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:51:32,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-02-18 15:51:32,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:51:32,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-02-18 15:51:32,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=2667, Unknown=0, NotChecked=0, Total=2970 [2023-02-18 15:51:32,145 INFO L87 Difference]: Start difference. First operand 148 states and 192 transitions. Second operand has 55 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 55 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:51:39,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:51:39,699 INFO L93 Difference]: Finished difference Result 242 states and 291 transitions. [2023-02-18 15:51:39,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-02-18 15:51:39,700 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 55 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-02-18 15:51:39,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:51:39,701 INFO L225 Difference]: With dead ends: 242 [2023-02-18 15:51:39,701 INFO L226 Difference]: Without dead ends: 208 [2023-02-18 15:51:39,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1816 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=743, Invalid=5899, Unknown=0, NotChecked=0, Total=6642 [2023-02-18 15:51:39,702 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 99 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-02-18 15:51:39,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 135 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-02-18 15:51:39,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2023-02-18 15:51:39,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 134. [2023-02-18 15:51:39,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 1.3157894736842106) internal successors, (175), 133 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:51:39,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 175 transitions. [2023-02-18 15:51:39,751 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 175 transitions. Word has length 27 [2023-02-18 15:51:39,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:51:39,752 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 175 transitions. [2023-02-18 15:51:39,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.3636363636363635) internal successors, (75), 55 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:51:39,752 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 175 transitions. [2023-02-18 15:51:39,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-18 15:51:39,752 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:51:39,752 INFO L195 NwaCegarLoop]: trace histogram [15, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:51:39,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-02-18 15:51:39,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-02-18 15:51:39,957 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:51:39,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:51:39,958 INFO L85 PathProgramCache]: Analyzing trace with hash 949161264, now seen corresponding path program 15 times [2023-02-18 15:51:39,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:51:39,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685905058] [2023-02-18 15:51:39,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:51:39,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:51:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:51:40,220 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 15:51:40,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:51:40,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685905058] [2023-02-18 15:51:40,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685905058] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:51:40,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819979280] [2023-02-18 15:51:40,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 15:51:40,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:51:40,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:51:40,222 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:51:40,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-02-18 15:51:40,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-18 15:51:40,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:51:40,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-18 15:51:40,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:51:40,524 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 15:51:40,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:51:40,997 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 123 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 15:51:40,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819979280] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:51:40,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:51:40,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2023-02-18 15:51:40,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914788722] [2023-02-18 15:51:40,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:51:40,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-02-18 15:51:40,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:51:40,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-02-18 15:51:40,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1293, Unknown=0, NotChecked=0, Total=1640 [2023-02-18 15:51:40,998 INFO L87 Difference]: Start difference. First operand 134 states and 175 transitions. Second operand has 41 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:51:43,598 WARN L837 $PredicateComparison]: unable to prove that (and (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 8) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967295) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 7) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 9) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 12) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 5) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 6) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 1) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 10) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 11) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 13) 4294967296) 0) (> (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 3) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967294) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296) 0)) is different from false [2023-02-18 15:51:45,698 WARN L837 $PredicateComparison]: unable to prove that (and (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 8) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967295) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 7) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 9) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 12) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 5) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 6) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 1) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 10) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 11) 4294967296) 0) (> (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 3) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967294) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296) 0)) is different from false [2023-02-18 15:54:05,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:54:05,649 INFO L93 Difference]: Finished difference Result 527 states and 672 transitions. [2023-02-18 15:54:05,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 182 states. [2023-02-18 15:54:05,650 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-18 15:54:05,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:54:05,651 INFO L225 Difference]: With dead ends: 527 [2023-02-18 15:54:05,651 INFO L226 Difference]: Without dead ends: 513 [2023-02-18 15:54:05,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 19 SyntacticMatches, 18 SemanticMatches, 202 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 15228 ImplicationChecksByTransitivity, 140.8s TimeCoverageRelationStatistics Valid=9583, Invalid=31024, Unknown=3, NotChecked=802, Total=41412 [2023-02-18 15:54:05,654 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 1309 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 1895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-02-18 15:54:05,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 491 Invalid, 1895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 1293 Invalid, 0 Unknown, 4 Unchecked, 4.1s Time] [2023-02-18 15:54:05,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2023-02-18 15:54:05,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 149. [2023-02-18 15:54:05,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.3175675675675675) internal successors, (195), 148 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:54:05,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2023-02-18 15:54:05,716 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 28 [2023-02-18 15:54:05,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:54:05,716 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2023-02-18 15:54:05,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.2195121951219512) internal successors, (50), 41 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:54:05,716 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2023-02-18 15:54:05,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-18 15:54:05,717 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:54:05,717 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:54:05,723 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-02-18 15:54:05,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:54:05,926 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:54:05,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:54:05,927 INFO L85 PathProgramCache]: Analyzing trace with hash 423173891, now seen corresponding path program 16 times [2023-02-18 15:54:05,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:54:05,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529856555] [2023-02-18 15:54:05,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:54:05,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:54:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:54:06,062 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-18 15:54:06,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:54:06,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529856555] [2023-02-18 15:54:06,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529856555] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:54:06,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57142832] [2023-02-18 15:54:06,062 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 15:54:06,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:54:06,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:54:06,064 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:54:06,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-02-18 15:54:06,118 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 15:54:06,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:54:06,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-18 15:54:06,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:54:06,249 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-18 15:54:06,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:54:06,551 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 7 proven. 42 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-18 15:54:06,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57142832] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:54:06,551 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:54:06,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 16] total 38 [2023-02-18 15:54:06,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136647667] [2023-02-18 15:54:06,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:54:06,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-02-18 15:54:06,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:54:06,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-02-18 15:54:06,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=1205, Unknown=0, NotChecked=0, Total=1406 [2023-02-18 15:54:06,552 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand has 38 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:54:08,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:54:08,024 INFO L93 Difference]: Finished difference Result 271 states and 336 transitions. [2023-02-18 15:54:08,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-02-18 15:54:08,024 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-02-18 15:54:08,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:54:08,025 INFO L225 Difference]: With dead ends: 271 [2023-02-18 15:54:08,025 INFO L226 Difference]: Without dead ends: 201 [2023-02-18 15:54:08,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 29 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=315, Invalid=1847, Unknown=0, NotChecked=0, Total=2162 [2023-02-18 15:54:08,027 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 52 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 15:54:08,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 101 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 15:54:08,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2023-02-18 15:54:08,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 166. [2023-02-18 15:54:08,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.2969696969696969) internal successors, (214), 165 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:54:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 214 transitions. [2023-02-18 15:54:08,107 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 214 transitions. Word has length 29 [2023-02-18 15:54:08,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:54:08,107 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 214 transitions. [2023-02-18 15:54:08,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 38 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:54:08,107 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 214 transitions. [2023-02-18 15:54:08,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-18 15:54:08,108 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:54:08,108 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:54:08,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-02-18 15:54:08,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:54:08,309 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:54:08,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:54:08,309 INFO L85 PathProgramCache]: Analyzing trace with hash -2029727233, now seen corresponding path program 17 times [2023-02-18 15:54:08,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:54:08,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565356856] [2023-02-18 15:54:08,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:54:08,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:54:08,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:54:09,038 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:54:09,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:54:09,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565356856] [2023-02-18 15:54:09,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565356856] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:54:09,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135233391] [2023-02-18 15:54:09,039 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 15:54:09,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:54:09,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:54:09,040 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:54:09,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-02-18 15:54:09,573 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-02-18 15:54:09,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:54:09,575 WARN L261 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 74 conjunts are in the unsatisfiable core [2023-02-18 15:54:09,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:54:11,527 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:54:11,527 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:54:14,539 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:54:14,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135233391] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:54:14,539 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:54:14,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27, 27] total 69 [2023-02-18 15:54:14,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746164777] [2023-02-18 15:54:14,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:54:14,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2023-02-18 15:54:14,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:54:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2023-02-18 15:54:14,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=4289, Unknown=0, NotChecked=0, Total=4692 [2023-02-18 15:54:14,540 INFO L87 Difference]: Start difference. First operand 166 states and 214 transitions. Second operand has 69 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 69 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:54:40,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:54:40,494 INFO L93 Difference]: Finished difference Result 278 states and 332 transitions. [2023-02-18 15:54:40,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-02-18 15:54:40,495 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 69 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-18 15:54:40,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:54:40,495 INFO L225 Difference]: With dead ends: 278 [2023-02-18 15:54:40,496 INFO L226 Difference]: Without dead ends: 240 [2023-02-18 15:54:40,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 15 SyntacticMatches, 3 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2766 ImplicationChecksByTransitivity, 26.2s TimeCoverageRelationStatistics Valid=986, Invalid=9114, Unknown=0, NotChecked=0, Total=10100 [2023-02-18 15:54:40,497 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 131 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 1037 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-02-18 15:54:40,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 189 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1037 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-02-18 15:54:40,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2023-02-18 15:54:40,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 150. [2023-02-18 15:54:40,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 1.308724832214765) internal successors, (195), 149 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:54:40,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 195 transitions. [2023-02-18 15:54:40,574 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 195 transitions. Word has length 30 [2023-02-18 15:54:40,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:54:40,574 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 195 transitions. [2023-02-18 15:54:40,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 1.2173913043478262) internal successors, (84), 69 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:54:40,574 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 195 transitions. [2023-02-18 15:54:40,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-18 15:54:40,575 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:54:40,575 INFO L195 NwaCegarLoop]: trace histogram [16, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:54:40,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-02-18 15:54:40,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-02-18 15:54:40,780 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:54:40,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:54:40,780 INFO L85 PathProgramCache]: Analyzing trace with hash 767237540, now seen corresponding path program 18 times [2023-02-18 15:54:40,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:54:40,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944009908] [2023-02-18 15:54:40,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:54:40,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:54:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:54:41,014 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 15:54:41,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:54:41,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944009908] [2023-02-18 15:54:41,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944009908] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:54:41,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364176505] [2023-02-18 15:54:41,014 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-18 15:54:41,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:54:41,015 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:54:41,017 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:54:41,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-02-18 15:54:41,211 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-18 15:54:41,212 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:54:41,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-18 15:54:41,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:54:41,372 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 15:54:41,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:54:41,811 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 15:54:41,811 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364176505] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:54:41,811 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:54:41,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 19, 19] total 40 [2023-02-18 15:54:41,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902602560] [2023-02-18 15:54:41,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:54:41,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-02-18 15:54:41,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:54:41,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-02-18 15:54:41,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1195, Unknown=0, NotChecked=0, Total=1560 [2023-02-18 15:54:41,813 INFO L87 Difference]: Start difference. First operand 150 states and 195 transitions. Second operand has 40 states, 40 states have (on average 1.525) internal successors, (61), 40 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:56:35,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:56:35,678 INFO L93 Difference]: Finished difference Result 710 states and 891 transitions. [2023-02-18 15:56:35,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2023-02-18 15:56:35,679 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.525) internal successors, (61), 40 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-02-18 15:56:35,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:56:35,689 INFO L225 Difference]: With dead ends: 710 [2023-02-18 15:56:35,689 INFO L226 Difference]: Without dead ends: 622 [2023-02-18 15:56:35,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 25 SyntacticMatches, 21 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3702 ImplicationChecksByTransitivity, 110.7s TimeCoverageRelationStatistics Valid=4275, Invalid=9528, Unknown=3, NotChecked=0, Total=13806 [2023-02-18 15:56:35,690 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 1154 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 737 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 737 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-02-18 15:56:35,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 523 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [737 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-02-18 15:56:35,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2023-02-18 15:56:35,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 175. [2023-02-18 15:56:35,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.3333333333333333) internal successors, (232), 174 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:56:35,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 232 transitions. [2023-02-18 15:56:35,804 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 232 transitions. Word has length 31 [2023-02-18 15:56:35,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:56:35,805 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 232 transitions. [2023-02-18 15:56:35,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.525) internal successors, (61), 40 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:56:35,805 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 232 transitions. [2023-02-18 15:56:35,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-18 15:56:35,805 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:56:35,805 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:56:35,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-02-18 15:56:36,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-02-18 15:56:36,011 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:56:36,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:56:36,011 INFO L85 PathProgramCache]: Analyzing trace with hash 2134502543, now seen corresponding path program 19 times [2023-02-18 15:56:36,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:56:36,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367513689] [2023-02-18 15:56:36,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:56:36,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:56:36,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:56:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-18 15:56:36,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:56:36,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367513689] [2023-02-18 15:56:36,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367513689] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:56:36,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65526247] [2023-02-18 15:56:36,204 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-18 15:56:36,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:56:36,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:56:36,205 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:56:36,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-02-18 15:56:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:56:36,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 50 conjunts are in the unsatisfiable core [2023-02-18 15:56:36,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:56:36,410 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-18 15:56:36,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:56:36,765 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 8 proven. 56 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-18 15:56:36,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65526247] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:56:36,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:56:36,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 18] total 43 [2023-02-18 15:56:36,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46641145] [2023-02-18 15:56:36,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:56:36,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-02-18 15:56:36,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:56:36,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-02-18 15:56:36,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1561, Unknown=0, NotChecked=0, Total=1806 [2023-02-18 15:56:36,766 INFO L87 Difference]: Start difference. First operand 175 states and 232 transitions. Second operand has 43 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:56:39,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:56:39,666 INFO L93 Difference]: Finished difference Result 315 states and 394 transitions. [2023-02-18 15:56:39,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-02-18 15:56:39,667 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-02-18 15:56:39,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:56:39,667 INFO L225 Difference]: With dead ends: 315 [2023-02-18 15:56:39,667 INFO L226 Difference]: Without dead ends: 237 [2023-02-18 15:56:39,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 31 SyntacticMatches, 10 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=386, Invalid=2370, Unknown=0, NotChecked=0, Total=2756 [2023-02-18 15:56:39,668 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 58 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-18 15:56:39,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 134 Invalid, 854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-18 15:56:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2023-02-18 15:56:39,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 194. [2023-02-18 15:56:39,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.3160621761658031) internal successors, (254), 193 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:56:39,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 254 transitions. [2023-02-18 15:56:39,768 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 254 transitions. Word has length 32 [2023-02-18 15:56:39,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:56:39,768 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 254 transitions. [2023-02-18 15:56:39,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.255813953488372) internal successors, (54), 43 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:56:39,768 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 254 transitions. [2023-02-18 15:56:39,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 15:56:39,769 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:56:39,769 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:56:39,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-02-18 15:56:39,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:56:39,974 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:56:39,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:56:39,974 INFO L85 PathProgramCache]: Analyzing trace with hash 254889333, now seen corresponding path program 20 times [2023-02-18 15:56:39,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:56:39,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193861266] [2023-02-18 15:56:39,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:56:39,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:56:39,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:56:40,747 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:56:40,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:56:40,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193861266] [2023-02-18 15:56:40,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193861266] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:56:40,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740294757] [2023-02-18 15:56:40,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 15:56:40,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:56:40,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:56:40,748 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:56:40,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-02-18 15:56:40,919 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 15:56:40,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:56:40,920 WARN L261 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 95 conjunts are in the unsatisfiable core [2023-02-18 15:56:40,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:56:41,993 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:56:41,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:56:43,711 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 15:56:43,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740294757] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:56:43,725 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:56:43,725 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 30, 23] total 70 [2023-02-18 15:56:43,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284210067] [2023-02-18 15:56:43,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:56:43,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2023-02-18 15:56:43,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:56:43,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2023-02-18 15:56:43,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=448, Invalid=4382, Unknown=0, NotChecked=0, Total=4830 [2023-02-18 15:56:43,727 INFO L87 Difference]: Start difference. First operand 194 states and 254 transitions. Second operand has 70 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:57:18,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:57:18,493 INFO L93 Difference]: Finished difference Result 379 states and 452 transitions. [2023-02-18 15:57:18,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-02-18 15:57:18,494 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-02-18 15:57:18,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:57:18,494 INFO L225 Difference]: With dead ends: 379 [2023-02-18 15:57:18,495 INFO L226 Difference]: Without dead ends: 321 [2023-02-18 15:57:18,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 21 SyntacticMatches, 5 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3785 ImplicationChecksByTransitivity, 32.9s TimeCoverageRelationStatistics Valid=1190, Invalid=12150, Unknown=0, NotChecked=0, Total=13340 [2023-02-18 15:57:18,496 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 159 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 1730 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-02-18 15:57:18,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 476 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1730 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-02-18 15:57:18,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2023-02-18 15:57:18,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 194. [2023-02-18 15:57:18,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 1.3264248704663213) internal successors, (256), 193 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:57:18,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 256 transitions. [2023-02-18 15:57:18,606 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 256 transitions. Word has length 33 [2023-02-18 15:57:18,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:57:18,606 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 256 transitions. [2023-02-18 15:57:18,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 1.3285714285714285) internal successors, (93), 70 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:57:18,606 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 256 transitions. [2023-02-18 15:57:18,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-18 15:57:18,607 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:57:18,607 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:57:18,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-02-18 15:57:18,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:57:18,812 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:57:18,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:57:18,812 INFO L85 PathProgramCache]: Analyzing trace with hash -884119677, now seen corresponding path program 21 times [2023-02-18 15:57:18,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:57:18,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879746379] [2023-02-18 15:57:18,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:57:18,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:57:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:57:19,020 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-18 15:57:19,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:57:19,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879746379] [2023-02-18 15:57:19,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879746379] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:57:19,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794243284] [2023-02-18 15:57:19,021 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 15:57:19,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:57:19,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:57:19,022 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:57:19,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-02-18 15:57:19,297 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-18 15:57:19,298 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:57:19,299 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 56 conjunts are in the unsatisfiable core [2023-02-18 15:57:19,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:57:19,503 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-18 15:57:19,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:57:19,984 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 9 proven. 72 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-18 15:57:19,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794243284] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:57:19,984 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:57:19,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 20] total 48 [2023-02-18 15:57:19,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951617801] [2023-02-18 15:57:19,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:57:19,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-02-18 15:57:19,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:57:19,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-02-18 15:57:19,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=293, Invalid=1963, Unknown=0, NotChecked=0, Total=2256 [2023-02-18 15:57:19,985 INFO L87 Difference]: Start difference. First operand 194 states and 256 transitions. Second operand has 48 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 48 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:57:24,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 15:57:24,991 INFO L93 Difference]: Finished difference Result 337 states and 422 transitions. [2023-02-18 15:57:24,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-02-18 15:57:24,991 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 48 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-02-18 15:57:24,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 15:57:24,992 INFO L225 Difference]: With dead ends: 337 [2023-02-18 15:57:24,992 INFO L226 Difference]: Without dead ends: 250 [2023-02-18 15:57:24,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 33 SyntacticMatches, 11 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=464, Invalid=2958, Unknown=0, NotChecked=0, Total=3422 [2023-02-18 15:57:24,993 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 60 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-02-18 15:57:24,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 192 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-02-18 15:57:24,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2023-02-18 15:57:25,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 205. [2023-02-18 15:57:25,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 204 states have (on average 1.2990196078431373) internal successors, (265), 204 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:57:25,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 265 transitions. [2023-02-18 15:57:25,108 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 265 transitions. Word has length 35 [2023-02-18 15:57:25,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 15:57:25,109 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 265 transitions. [2023-02-18 15:57:25,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 48 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:57:25,109 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 265 transitions. [2023-02-18 15:57:25,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-18 15:57:25,109 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 15:57:25,110 INFO L195 NwaCegarLoop]: trace histogram [18, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 15:57:25,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-02-18 15:57:25,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-02-18 15:57:25,315 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 15:57:25,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 15:57:25,315 INFO L85 PathProgramCache]: Analyzing trace with hash -217644651, now seen corresponding path program 22 times [2023-02-18 15:57:25,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 15:57:25,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508075992] [2023-02-18 15:57:25,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 15:57:25,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 15:57:25,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 15:57:25,624 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-18 15:57:25,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 15:57:25,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508075992] [2023-02-18 15:57:25,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508075992] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 15:57:25,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493943536] [2023-02-18 15:57:25,624 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 15:57:25,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 15:57:25,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 15:57:25,625 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 15:57:25,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-02-18 15:57:25,665 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 15:57:25,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 15:57:25,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 49 conjunts are in the unsatisfiable core [2023-02-18 15:57:25,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 15:57:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-18 15:57:25,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 15:57:26,638 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 0 proven. 181 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-18 15:57:26,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493943536] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 15:57:26,638 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 15:57:26,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2023-02-18 15:57:26,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493307097] [2023-02-18 15:57:26,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 15:57:26,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2023-02-18 15:57:26,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 15:57:26,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2023-02-18 15:57:26,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=490, Invalid=2060, Unknown=0, NotChecked=0, Total=2550 [2023-02-18 15:57:26,639 INFO L87 Difference]: Start difference. First operand 205 states and 265 transitions. Second operand has 51 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 51 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 15:57:57,533 WARN L837 $PredicateComparison]: unable to prove that (and (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 8) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967295) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 7) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 9) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 12) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 5) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 6) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 1) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 10) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967292) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 11) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967293) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 13) 4294967296) 0) (> (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 3) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967294) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296) 0)) is different from false [2023-02-18 15:57:59,741 WARN L837 $PredicateComparison]: unable to prove that (and (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 8) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967295) 4294967296) 0) (> (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 7) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 9) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 12) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 5) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 6) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 14) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 1) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 10) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967292) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 11) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967295) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967293) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 13) 4294967296) 0) (> (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 3) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967292) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967294) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967294) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296) 0)) is different from false [2023-02-18 15:58:34,329 WARN L837 $PredicateComparison]: unable to prove that (and (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 8) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967295) 4294967296) 0) (> (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 7) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 9) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 12) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 5) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 6) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 1) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 10) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967292) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 11) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967295) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967293) 4294967296) 0) (> (mod |c_ULTIMATE.start_main_~y~0#1| 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 3) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967292) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967294) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 4294967294) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0) (> (mod (+ |c_ULTIMATE.start_main_~y~0#1| 2) 4294967296) 0)) is different from false