./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector-regression/recHanoi03-1.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/bitvector-regression/recHanoi03-1.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 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-17 05:47:06,522 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 05:47:06,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 05:47:06,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 05:47:06,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 05:47:06,556 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 05:47:06,559 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 05:47:06,562 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 05:47:06,564 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 05:47:06,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 05:47:06,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 05:47:06,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 05:47:06,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 05:47:06,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 05:47:06,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 05:47:06,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 05:47:06,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 05:47:06,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 05:47:06,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 05:47:06,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 05:47:06,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 05:47:06,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 05:47:06,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 05:47:06,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 05:47:06,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 05:47:06,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 05:47:06,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 05:47:06,600 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 05:47:06,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 05:47:06,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 05:47:06,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 05:47:06,602 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 05:47:06,604 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 05:47:06,605 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 05:47:06,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 05:47:06,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 05:47:06,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 05:47:06,607 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 05:47:06,607 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 05:47:06,608 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 05:47:06,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 05:47:06,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 05:47:06,633 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 05:47:06,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 05:47:06,633 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 05:47:06,634 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 05:47:06,634 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 05:47:06,634 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 05:47:06,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 05:47:06,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 05:47:06,635 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 05:47:06,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 05:47:06,636 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 05:47:06,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 05:47:06,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 05:47:06,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 05:47:06,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 05:47:06,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 05:47:06,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 05:47:06,637 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 05:47:06,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 05:47:06,637 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 05:47:06,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 05:47:06,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 05:47:06,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 05:47:06,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 05:47:06,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 05:47:06,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 05:47:06,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 05:47:06,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 05:47:06,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 05:47:06,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 05:47:06,640 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 05:47:06,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 05:47:06,640 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 05:47:06,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 05:47:06,640 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 05:47:06,641 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 [2023-02-17 05:47:06,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 05:47:06,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 05:47:06,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 05:47:06,887 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 05:47:06,887 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 05:47:06,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2023-02-17 05:47:08,076 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 05:47:08,256 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 05:47:08,257 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2023-02-17 05:47:08,261 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/924c93573/1c083b4398e2487aaad56f33176b8e95/FLAG45da2ed7f [2023-02-17 05:47:08,272 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/924c93573/1c083b4398e2487aaad56f33176b8e95 [2023-02-17 05:47:08,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 05:47:08,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 05:47:08,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 05:47:08,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 05:47:08,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 05:47:08,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:47:08" (1/1) ... [2023-02-17 05:47:08,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b46b636 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:08, skipping insertion in model container [2023-02-17 05:47:08,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:47:08" (1/1) ... [2023-02-17 05:47:08,287 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 05:47:08,299 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 05:47:08,435 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/bitvector-regression/recHanoi03-1.c[838,851] [2023-02-17 05:47:08,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:47:08,453 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 05:47:08,470 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/bitvector-regression/recHanoi03-1.c[838,851] [2023-02-17 05:47:08,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:47:08,482 INFO L208 MainTranslator]: Completed translation [2023-02-17 05:47:08,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:08 WrapperNode [2023-02-17 05:47:08,483 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 05:47:08,484 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 05:47:08,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 05:47:08,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 05:47:08,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:08" (1/1) ... [2023-02-17 05:47:08,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:08" (1/1) ... [2023-02-17 05:47:08,509 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 25 [2023-02-17 05:47:08,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 05:47:08,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 05:47:08,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 05:47:08,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 05:47:08,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:08" (1/1) ... [2023-02-17 05:47:08,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:08" (1/1) ... [2023-02-17 05:47:08,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:08" (1/1) ... [2023-02-17 05:47:08,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:08" (1/1) ... [2023-02-17 05:47:08,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:08" (1/1) ... [2023-02-17 05:47:08,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:08" (1/1) ... [2023-02-17 05:47:08,530 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:08" (1/1) ... [2023-02-17 05:47:08,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:08" (1/1) ... [2023-02-17 05:47:08,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 05:47:08,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 05:47:08,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 05:47:08,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 05:47:08,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:08" (1/1) ... [2023-02-17 05:47:08,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 05:47:08,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:47:08,564 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) [2023-02-17 05:47:08,584 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 [2023-02-17 05:47:08,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 05:47:08,603 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2023-02-17 05:47:08,603 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2023-02-17 05:47:08,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 05:47:08,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 05:47:08,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 05:47:08,660 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 05:47:08,662 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 05:47:08,776 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 05:47:08,781 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 05:47:08,782 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-17 05:47:08,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:47:08 BoogieIcfgContainer [2023-02-17 05:47:08,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 05:47:08,796 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 05:47:08,796 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 05:47:08,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 05:47:08,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 05:47:08" (1/3) ... [2023-02-17 05:47:08,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ba63b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:47:08, skipping insertion in model container [2023-02-17 05:47:08,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:08" (2/3) ... [2023-02-17 05:47:08,800 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37ba63b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:47:08, skipping insertion in model container [2023-02-17 05:47:08,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:47:08" (3/3) ... [2023-02-17 05:47:08,801 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2023-02-17 05:47:08,816 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 05:47:08,817 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 05:47:08,868 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 05:47:08,875 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;@56fb0a69, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 05:47:08,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 05:47:08,880 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 05:47:08,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-17 05:47:08,888 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:47:08,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:47:08,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:47:08,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:47:08,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2087939196, now seen corresponding path program 1 times [2023-02-17 05:47:08,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 05:47:08,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142862590] [2023-02-17 05:47:08,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:47:08,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 05:47:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 05:47:08,984 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 05:47:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 05:47:09,033 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 05:47:09,036 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-17 05:47:09,037 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 05:47:09,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 05:47:09,042 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-02-17 05:47:09,048 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 05:47:09,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 05:47:09 BoogieIcfgContainer [2023-02-17 05:47:09,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 05:47:09,070 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 05:47:09,070 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 05:47:09,070 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 05:47:09,071 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:47:08" (3/4) ... [2023-02-17 05:47:09,075 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-17 05:47:09,075 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 05:47:09,076 INFO L158 Benchmark]: Toolchain (without parser) took 799.87ms. Allocated memory is still 130.0MB. Free memory was 83.7MB in the beginning and 87.8MB in the end (delta: -4.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 05:47:09,077 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory was 58.1MB in the beginning and 58.0MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 05:47:09,078 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.35ms. Allocated memory is still 130.0MB. Free memory was 83.3MB in the beginning and 73.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 05:47:09,079 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.45ms. Allocated memory is still 130.0MB. Free memory was 73.6MB in the beginning and 72.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 05:47:09,079 INFO L158 Benchmark]: Boogie Preprocessor took 24.32ms. Allocated memory is still 130.0MB. Free memory was 72.4MB in the beginning and 71.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 05:47:09,084 INFO L158 Benchmark]: RCFGBuilder took 247.92ms. Allocated memory is still 130.0MB. Free memory was 71.1MB in the beginning and 99.4MB in the end (delta: -28.3MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2023-02-17 05:47:09,084 INFO L158 Benchmark]: TraceAbstraction took 272.64ms. Allocated memory is still 130.0MB. Free memory was 102.5MB in the beginning and 88.6MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-17 05:47:09,086 INFO L158 Benchmark]: Witness Printer took 5.03ms. Allocated memory is still 130.0MB. Free memory was 88.6MB in the beginning and 87.8MB in the end (delta: 796.3kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 05:47:09,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory was 58.1MB in the beginning and 58.0MB in the end (delta: 117.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 206.35ms. Allocated memory is still 130.0MB. Free memory was 83.3MB in the beginning and 73.6MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.45ms. Allocated memory is still 130.0MB. Free memory was 73.6MB in the beginning and 72.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.32ms. Allocated memory is still 130.0MB. Free memory was 72.4MB in the beginning and 71.1MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 247.92ms. Allocated memory is still 130.0MB. Free memory was 71.1MB in the beginning and 99.4MB in the end (delta: -28.3MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * TraceAbstraction took 272.64ms. Allocated memory is still 130.0MB. Free memory was 102.5MB in the beginning and 88.6MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Witness Printer took 5.03ms. Allocated memory is still 130.0MB. Free memory was 88.6MB in the beginning and 87.8MB in the end (delta: 796.3kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 36]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 33. Possible FailurePath: [L27] int n = __VERIFIER_nondet_int(); [L28] COND FALSE !(n < 1) VAL [n=1] [L31] CALL, EXPR hanoi(n) VAL [\old(n)=1] [L19] COND TRUE n == 1 [L20] return 1; VAL [\old(n)=1, \result=1, n=1] [L31] RET, EXPR hanoi(n) VAL [hanoi(n)=1, n=1] [L31] unsigned result = hanoi(n); [L33] COND FALSE !(result+1>0 && result+1 == 1< 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 -> 5a58a565ed7a29809aaccd8966118196fec0a697f2fc6db04cc260beeab4df83 [2023-02-17 05:47:11,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 05:47:11,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 05:47:11,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 05:47:11,604 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 05:47:11,604 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 05:47:11,606 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2023-02-17 05:47:12,839 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 05:47:13,019 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 05:47:13,020 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector-regression/recHanoi03-1.c [2023-02-17 05:47:13,025 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/838dcb84c/1cdbb066ca1b440f8c7e7e65387acabf/FLAG2dc298de6 [2023-02-17 05:47:13,036 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/838dcb84c/1cdbb066ca1b440f8c7e7e65387acabf [2023-02-17 05:47:13,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 05:47:13,040 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 05:47:13,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 05:47:13,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 05:47:13,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 05:47:13,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:47:13" (1/1) ... [2023-02-17 05:47:13,047 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@94cfaa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:13, skipping insertion in model container [2023-02-17 05:47:13,047 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 05:47:13" (1/1) ... [2023-02-17 05:47:13,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 05:47:13,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 05:47:13,218 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/bitvector-regression/recHanoi03-1.c[838,851] [2023-02-17 05:47:13,223 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:47:13,233 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 05:47:13,252 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/bitvector-regression/recHanoi03-1.c[838,851] [2023-02-17 05:47:13,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 05:47:13,264 INFO L208 MainTranslator]: Completed translation [2023-02-17 05:47:13,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:13 WrapperNode [2023-02-17 05:47:13,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 05:47:13,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 05:47:13,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 05:47:13,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 05:47:13,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:13" (1/1) ... [2023-02-17 05:47:13,277 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:13" (1/1) ... [2023-02-17 05:47:13,289 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 24 [2023-02-17 05:47:13,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 05:47:13,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 05:47:13,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 05:47:13,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 05:47:13,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:13" (1/1) ... [2023-02-17 05:47:13,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:13" (1/1) ... [2023-02-17 05:47:13,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:13" (1/1) ... [2023-02-17 05:47:13,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:13" (1/1) ... [2023-02-17 05:47:13,315 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:13" (1/1) ... [2023-02-17 05:47:13,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:13" (1/1) ... [2023-02-17 05:47:13,323 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:13" (1/1) ... [2023-02-17 05:47:13,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:13" (1/1) ... [2023-02-17 05:47:13,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 05:47:13,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 05:47:13,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 05:47:13,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 05:47:13,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:13" (1/1) ... [2023-02-17 05:47:13,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 05:47:13,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 05:47:13,354 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) [2023-02-17 05:47:13,356 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 [2023-02-17 05:47:13,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 05:47:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2023-02-17 05:47:13,383 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2023-02-17 05:47:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 05:47:13,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 05:47:13,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-17 05:47:13,442 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 05:47:13,443 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 05:47:13,553 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 05:47:13,564 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 05:47:13,565 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-17 05:47:13,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:47:13 BoogieIcfgContainer [2023-02-17 05:47:13,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 05:47:13,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 05:47:13,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 05:47:13,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 05:47:13,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 05:47:13" (1/3) ... [2023-02-17 05:47:13,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a69e3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:47:13, skipping insertion in model container [2023-02-17 05:47:13,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 05:47:13" (2/3) ... [2023-02-17 05:47:13,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a69e3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 05:47:13, skipping insertion in model container [2023-02-17 05:47:13,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 05:47:13" (3/3) ... [2023-02-17 05:47:13,575 INFO L112 eAbstractionObserver]: Analyzing ICFG recHanoi03-1.c [2023-02-17 05:47:13,589 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 05:47:13,590 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 05:47:13,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 05:47:13,650 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;@719fcba7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 05:47:13,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 05:47:13,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-17 05:47:13,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-17 05:47:13,661 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:47:13,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:47:13,662 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:47:13,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:47:13,667 INFO L85 PathProgramCache]: Analyzing trace with hash -2087939196, now seen corresponding path program 1 times [2023-02-17 05:47:13,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:47:13,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [106014434] [2023-02-17 05:47:13,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:47:13,679 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:13,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:47:13,685 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:47:13,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-17 05:47:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:47:13,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-17 05:47:13,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:47:13,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 05:47:13,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 05:47:13,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:47:13,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [106014434] [2023-02-17 05:47:13,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [106014434] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 05:47:13,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 05:47:13,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 05:47:13,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379210259] [2023-02-17 05:47:13,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 05:47:13,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 05:47:13,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:47:13,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 05:47:13,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-17 05:47:13,925 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:47:14,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:47:14,053 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2023-02-17 05:47:14,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 05:47:14,056 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2023-02-17 05:47:14,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:47:14,063 INFO L225 Difference]: With dead ends: 32 [2023-02-17 05:47:14,063 INFO L226 Difference]: Without dead ends: 16 [2023-02-17 05:47:14,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-17 05:47:14,071 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 17 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 05:47:14,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 51 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 05:47:14,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-02-17 05:47:14,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-02-17 05:47:14,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 05:47:14,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2023-02-17 05:47:14,107 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2023-02-17 05:47:14,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:47:14,107 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2023-02-17 05:47:14,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 05:47:14,108 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2023-02-17 05:47:14,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-02-17 05:47:14,110 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:47:14,110 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:47:14,123 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-17 05:47:14,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:14,319 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:47:14,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:47:14,320 INFO L85 PathProgramCache]: Analyzing trace with hash -2053638732, now seen corresponding path program 1 times [2023-02-17 05:47:14,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:47:14,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1923163033] [2023-02-17 05:47:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 05:47:14,321 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:14,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:47:14,323 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:47:14,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-17 05:47:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:47:14,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-17 05:47:14,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:47:14,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 05:47:14,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:47:14,724 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 05:47:14,725 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:47:14,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1923163033] [2023-02-17 05:47:14,725 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1923163033] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:47:14,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:47:14,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-02-17 05:47:14,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210950169] [2023-02-17 05:47:14,729 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:47:14,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-17 05:47:14,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:47:14,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-17 05:47:14,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2023-02-17 05:47:14,735 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 05:47:15,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:47:15,018 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2023-02-17 05:47:15,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-17 05:47:15,020 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 17 [2023-02-17 05:47:15,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:47:15,021 INFO L225 Difference]: With dead ends: 28 [2023-02-17 05:47:15,021 INFO L226 Difference]: Without dead ends: 22 [2023-02-17 05:47:15,022 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2023-02-17 05:47:15,022 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 18 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 05:47:15,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 61 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 05:47:15,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-17 05:47:15,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-17 05:47:15,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 16 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-17 05:47:15,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2023-02-17 05:47:15,030 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2023-02-17 05:47:15,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:47:15,031 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-02-17 05:47:15,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 12 states have internal predecessors, (22), 4 states have call successors, (4), 1 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-17 05:47:15,032 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2023-02-17 05:47:15,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-17 05:47:15,033 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:47:15,033 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:47:15,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-17 05:47:15,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:15,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:47:15,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:47:15,243 INFO L85 PathProgramCache]: Analyzing trace with hash -491101836, now seen corresponding path program 2 times [2023-02-17 05:47:15,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:47:15,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160117318] [2023-02-17 05:47:15,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 05:47:15,244 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:15,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:47:15,245 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:47:15,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-17 05:47:15,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 05:47:15,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:47:15,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-17 05:47:15,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:47:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-17 05:47:15,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:47:16,236 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-17 05:47:16,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:47:16,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160117318] [2023-02-17 05:47:16,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160117318] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:47:16,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:47:16,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2023-02-17 05:47:16,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349988572] [2023-02-17 05:47:16,242 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:47:16,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-17 05:47:16,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:47:16,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-17 05:47:16,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2023-02-17 05:47:16,246 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 18 states have internal predecessors, (34), 6 states have call successors, (6), 1 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2023-02-17 05:47:16,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:47:16,841 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2023-02-17 05:47:16,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-17 05:47:16,842 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 18 states have internal predecessors, (34), 6 states have call successors, (6), 1 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) Word has length 29 [2023-02-17 05:47:16,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:47:16,843 INFO L225 Difference]: With dead ends: 34 [2023-02-17 05:47:16,843 INFO L226 Difference]: Without dead ends: 28 [2023-02-17 05:47:16,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=182, Invalid=1150, Unknown=0, NotChecked=0, Total=1332 [2023-02-17 05:47:16,845 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 46 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 05:47:16,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 118 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 05:47:16,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-17 05:47:16,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-02-17 05:47:16,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 20 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 6 states have return successors, (7), 6 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-17 05:47:16,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2023-02-17 05:47:16,849 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 29 [2023-02-17 05:47:16,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:47:16,850 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2023-02-17 05:47:16,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.36) internal successors, (34), 18 states have internal predecessors, (34), 6 states have call successors, (6), 1 states have call predecessors, (6), 8 states have return successors, (8), 8 states have call predecessors, (8), 6 states have call successors, (8) [2023-02-17 05:47:16,850 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2023-02-17 05:47:16,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-17 05:47:16,851 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:47:16,851 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:47:16,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-17 05:47:17,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:17,061 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:47:17,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:47:17,061 INFO L85 PathProgramCache]: Analyzing trace with hash -492655308, now seen corresponding path program 3 times [2023-02-17 05:47:17,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:47:17,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457558957] [2023-02-17 05:47:17,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 05:47:17,062 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:17,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:47:17,064 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:47:17,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-17 05:47:17,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-17 05:47:17,102 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:47:17,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-17 05:47:17,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:47:17,282 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-17 05:47:17,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:47:18,726 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-17 05:47:18,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:47:18,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457558957] [2023-02-17 05:47:18,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457558957] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:47:18,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:47:18,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 21] total 36 [2023-02-17 05:47:18,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300734759] [2023-02-17 05:47:18,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:47:18,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2023-02-17 05:47:18,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:47:18,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2023-02-17 05:47:18,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=1141, Unknown=0, NotChecked=0, Total=1260 [2023-02-17 05:47:18,731 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 36 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 12 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) [2023-02-17 05:47:19,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:47:19,681 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2023-02-17 05:47:19,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-17 05:47:19,682 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 12 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) Word has length 41 [2023-02-17 05:47:19,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:47:19,684 INFO L225 Difference]: With dead ends: 40 [2023-02-17 05:47:19,684 INFO L226 Difference]: Without dead ends: 34 [2023-02-17 05:47:19,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 38 SyntacticMatches, 8 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=290, Invalid=2260, Unknown=0, NotChecked=0, Total=2550 [2023-02-17 05:47:19,686 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 62 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 05:47:19,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 205 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 396 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-17 05:47:19,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-17 05:47:19,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-02-17 05:47:19,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.0434782608695652) internal successors, (24), 24 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 8 states have return successors, (9), 8 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-17 05:47:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2023-02-17 05:47:19,692 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 41 [2023-02-17 05:47:19,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:47:19,693 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2023-02-17 05:47:19,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 1.3142857142857143) internal successors, (46), 24 states have internal predecessors, (46), 8 states have call successors, (8), 1 states have call predecessors, (8), 12 states have return successors, (12), 12 states have call predecessors, (12), 8 states have call successors, (12) [2023-02-17 05:47:19,693 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2023-02-17 05:47:19,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-02-17 05:47:19,694 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:47:19,695 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:47:19,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-17 05:47:19,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:19,897 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:47:19,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:47:19,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1906255628, now seen corresponding path program 4 times [2023-02-17 05:47:19,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:47:19,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [432978719] [2023-02-17 05:47:19,899 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 05:47:19,899 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:19,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:47:19,900 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:47:19,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-17 05:47:19,936 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 05:47:19,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:47:19,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 36 conjunts are in the unsatisfiable core [2023-02-17 05:47:19,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:47:20,167 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2023-02-17 05:47:20,168 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:47:22,415 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-17 05:47:22,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:47:22,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [432978719] [2023-02-17 05:47:22,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [432978719] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:47:22,416 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:47:22,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 27] total 46 [2023-02-17 05:47:22,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584542154] [2023-02-17 05:47:22,417 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:47:22,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-02-17 05:47:22,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:47:22,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-02-17 05:47:22,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1913, Unknown=0, NotChecked=0, Total=2070 [2023-02-17 05:47:22,420 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 30 states have internal predecessors, (58), 10 states have call successors, (10), 1 states have call predecessors, (10), 16 states have return successors, (16), 16 states have call predecessors, (16), 10 states have call successors, (16) [2023-02-17 05:47:23,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:47:23,732 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2023-02-17 05:47:23,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-02-17 05:47:23,742 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 30 states have internal predecessors, (58), 10 states have call successors, (10), 1 states have call predecessors, (10), 16 states have return successors, (16), 16 states have call predecessors, (16), 10 states have call successors, (16) Word has length 53 [2023-02-17 05:47:23,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:47:23,744 INFO L225 Difference]: With dead ends: 46 [2023-02-17 05:47:23,744 INFO L226 Difference]: Without dead ends: 40 [2023-02-17 05:47:23,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 50 SyntacticMatches, 10 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=414, Invalid=3746, Unknown=0, NotChecked=0, Total=4160 [2023-02-17 05:47:23,747 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 114 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-02-17 05:47:23,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 300 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-02-17 05:47:23,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-17 05:47:23,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2023-02-17 05:47:23,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 27 states have (on average 1.037037037037037) internal successors, (28), 28 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 10 states have return successors, (11), 10 states have call predecessors, (11), 2 states have call successors, (11) [2023-02-17 05:47:23,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2023-02-17 05:47:23,753 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 53 [2023-02-17 05:47:23,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:47:23,753 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2023-02-17 05:47:23,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.288888888888889) internal successors, (58), 30 states have internal predecessors, (58), 10 states have call successors, (10), 1 states have call predecessors, (10), 16 states have return successors, (16), 16 states have call predecessors, (16), 10 states have call successors, (16) [2023-02-17 05:47:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2023-02-17 05:47:23,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-02-17 05:47:23,755 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:47:23,755 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:47:23,765 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-17 05:47:23,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:23,964 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:47:23,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:47:23,965 INFO L85 PathProgramCache]: Analyzing trace with hash 788849844, now seen corresponding path program 5 times [2023-02-17 05:47:23,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:47:23,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694999412] [2023-02-17 05:47:23,966 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 05:47:23,966 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:23,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:47:23,967 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:47:23,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-17 05:47:24,077 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2023-02-17 05:47:24,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:47:24,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-17 05:47:24,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:47:24,392 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-02-17 05:47:24,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:47:27,632 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 207 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-02-17 05:47:27,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:47:27,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694999412] [2023-02-17 05:47:27,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694999412] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:47:27,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:47:27,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 33] total 56 [2023-02-17 05:47:27,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834813097] [2023-02-17 05:47:27,633 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:47:27,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2023-02-17 05:47:27,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:47:27,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2023-02-17 05:47:27,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=2885, Unknown=0, NotChecked=0, Total=3080 [2023-02-17 05:47:27,636 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand has 56 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 36 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 20 states have return successors, (20), 20 states have call predecessors, (20), 12 states have call successors, (20) [2023-02-17 05:47:29,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:47:29,697 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2023-02-17 05:47:29,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-02-17 05:47:29,698 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 36 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 20 states have return successors, (20), 20 states have call predecessors, (20), 12 states have call successors, (20) Word has length 65 [2023-02-17 05:47:29,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:47:29,699 INFO L225 Difference]: With dead ends: 52 [2023-02-17 05:47:29,700 INFO L226 Difference]: Without dead ends: 46 [2023-02-17 05:47:29,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 62 SyntacticMatches, 12 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 805 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=554, Invalid=5608, Unknown=0, NotChecked=0, Total=6162 [2023-02-17 05:47:29,702 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 138 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-02-17 05:47:29,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 443 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-02-17 05:47:29,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2023-02-17 05:47:29,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2023-02-17 05:47:29,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 31 states have (on average 1.032258064516129) internal successors, (32), 32 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 12 states have return successors, (13), 12 states have call predecessors, (13), 2 states have call successors, (13) [2023-02-17 05:47:29,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2023-02-17 05:47:29,707 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 65 [2023-02-17 05:47:29,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:47:29,708 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2023-02-17 05:47:29,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 36 states have internal predecessors, (70), 12 states have call successors, (12), 1 states have call predecessors, (12), 20 states have return successors, (20), 20 states have call predecessors, (20), 12 states have call successors, (20) [2023-02-17 05:47:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2023-02-17 05:47:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-02-17 05:47:29,710 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:47:29,710 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:47:29,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-02-17 05:47:29,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:29,920 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:47:29,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:47:29,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1302253684, now seen corresponding path program 6 times [2023-02-17 05:47:29,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:47:29,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868765978] [2023-02-17 05:47:29,921 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 05:47:29,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:29,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:47:29,922 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:47:29,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-17 05:47:29,978 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 12 check-sat command(s) [2023-02-17 05:47:29,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:47:29,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 52 conjunts are in the unsatisfiable core [2023-02-17 05:47:29,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:47:30,402 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2023-02-17 05:47:30,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:47:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 308 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-02-17 05:47:34,835 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:47:34,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868765978] [2023-02-17 05:47:34,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868765978] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:47:34,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:47:34,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 39] total 66 [2023-02-17 05:47:34,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762900142] [2023-02-17 05:47:34,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:47:34,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-02-17 05:47:34,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:47:34,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-02-17 05:47:34,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=4057, Unknown=0, NotChecked=0, Total=4290 [2023-02-17 05:47:34,839 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 66 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 42 states have internal predecessors, (82), 14 states have call successors, (14), 1 states have call predecessors, (14), 24 states have return successors, (24), 24 states have call predecessors, (24), 14 states have call successors, (24) [2023-02-17 05:47:37,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:47:37,569 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2023-02-17 05:47:37,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-02-17 05:47:37,577 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 42 states have internal predecessors, (82), 14 states have call successors, (14), 1 states have call predecessors, (14), 24 states have return successors, (24), 24 states have call predecessors, (24), 14 states have call successors, (24) Word has length 77 [2023-02-17 05:47:37,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:47:37,583 INFO L225 Difference]: With dead ends: 58 [2023-02-17 05:47:37,583 INFO L226 Difference]: Without dead ends: 52 [2023-02-17 05:47:37,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 74 SyntacticMatches, 14 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1120 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=710, Invalid=7846, Unknown=0, NotChecked=0, Total=8556 [2023-02-17 05:47:37,586 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 84 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-02-17 05:47:37,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 556 Invalid, 1133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-02-17 05:47:37,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-17 05:47:37,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-02-17 05:47:37,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 35 states have (on average 1.0285714285714285) internal successors, (36), 36 states have internal predecessors, (36), 2 states have call successors, (2), 1 states have call predecessors, (2), 14 states have return successors, (15), 14 states have call predecessors, (15), 2 states have call successors, (15) [2023-02-17 05:47:37,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2023-02-17 05:47:37,607 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 77 [2023-02-17 05:47:37,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:47:37,608 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2023-02-17 05:47:37,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 65 states have (on average 1.2615384615384615) internal successors, (82), 42 states have internal predecessors, (82), 14 states have call successors, (14), 1 states have call predecessors, (14), 24 states have return successors, (24), 24 states have call predecessors, (24), 14 states have call successors, (24) [2023-02-17 05:47:37,608 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2023-02-17 05:47:37,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-02-17 05:47:37,611 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:47:37,611 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:47:37,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-02-17 05:47:37,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:37,824 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:47:37,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:47:37,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1287742412, now seen corresponding path program 7 times [2023-02-17 05:47:37,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:47:37,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366131310] [2023-02-17 05:47:37,825 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 05:47:37,825 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:37,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:47:37,827 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:47:37,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-17 05:47:37,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:47:37,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 60 conjunts are in the unsatisfiable core [2023-02-17 05:47:37,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:47:38,548 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2023-02-17 05:47:38,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:47:44,446 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 429 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-02-17 05:47:44,446 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:47:44,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366131310] [2023-02-17 05:47:44,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [366131310] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:47:44,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:47:44,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 45] total 76 [2023-02-17 05:47:44,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234059561] [2023-02-17 05:47:44,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:47:44,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2023-02-17 05:47:44,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:47:44,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2023-02-17 05:47:44,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=5429, Unknown=0, NotChecked=0, Total=5700 [2023-02-17 05:47:44,450 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 76 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 48 states have internal predecessors, (94), 16 states have call successors, (16), 1 states have call predecessors, (16), 28 states have return successors, (28), 28 states have call predecessors, (28), 16 states have call successors, (28) [2023-02-17 05:47:48,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:47:48,096 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2023-02-17 05:47:48,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-02-17 05:47:48,096 INFO L78 Accepts]: Start accepts. Automaton has has 76 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 48 states have internal predecessors, (94), 16 states have call successors, (16), 1 states have call predecessors, (16), 28 states have return successors, (28), 28 states have call predecessors, (28), 16 states have call successors, (28) Word has length 89 [2023-02-17 05:47:48,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:47:48,097 INFO L225 Difference]: With dead ends: 64 [2023-02-17 05:47:48,097 INFO L226 Difference]: Without dead ends: 58 [2023-02-17 05:47:48,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 86 SyntacticMatches, 16 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1487 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=882, Invalid=10460, Unknown=0, NotChecked=0, Total=11342 [2023-02-17 05:47:48,101 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 246 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 1569 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 1676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-02-17 05:47:48,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 853 Invalid, 1676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1569 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-02-17 05:47:48,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2023-02-17 05:47:48,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2023-02-17 05:47:48,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 40 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 16 states have return successors, (17), 16 states have call predecessors, (17), 2 states have call successors, (17) [2023-02-17 05:47:48,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2023-02-17 05:47:48,106 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 89 [2023-02-17 05:47:48,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:47:48,107 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2023-02-17 05:47:48,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 48 states have internal predecessors, (94), 16 states have call successors, (16), 1 states have call predecessors, (16), 28 states have return successors, (28), 28 states have call predecessors, (28), 16 states have call successors, (28) [2023-02-17 05:47:48,107 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2023-02-17 05:47:48,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-02-17 05:47:48,109 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:47:48,109 INFO L195 NwaCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:47:48,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-02-17 05:47:48,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:48,317 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:47:48,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:47:48,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1760839668, now seen corresponding path program 8 times [2023-02-17 05:47:48,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:47:48,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1653553045] [2023-02-17 05:47:48,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 05:47:48,318 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:47:48,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:47:48,320 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:47:48,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-17 05:47:48,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 05:47:48,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:47:48,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 68 conjunts are in the unsatisfiable core [2023-02-17 05:47:48,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:47:49,117 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2023-02-17 05:47:49,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:47:56,945 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 570 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2023-02-17 05:47:56,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:47:56,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1653553045] [2023-02-17 05:47:56,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1653553045] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:47:56,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:47:56,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 51] total 86 [2023-02-17 05:47:56,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844081925] [2023-02-17 05:47:56,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:47:56,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 86 states [2023-02-17 05:47:56,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:47:56,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants. [2023-02-17 05:47:56,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=7001, Unknown=0, NotChecked=0, Total=7310 [2023-02-17 05:47:56,952 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand has 86 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 54 states have internal predecessors, (106), 18 states have call successors, (18), 1 states have call predecessors, (18), 32 states have return successors, (32), 32 states have call predecessors, (32), 18 states have call successors, (32) [2023-02-17 05:48:01,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:48:01,853 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2023-02-17 05:48:01,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-02-17 05:48:01,854 INFO L78 Accepts]: Start accepts. Automaton has has 86 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 54 states have internal predecessors, (106), 18 states have call successors, (18), 1 states have call predecessors, (18), 32 states have return successors, (32), 32 states have call predecessors, (32), 18 states have call successors, (32) Word has length 101 [2023-02-17 05:48:01,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:48:01,855 INFO L225 Difference]: With dead ends: 70 [2023-02-17 05:48:01,855 INFO L226 Difference]: Without dead ends: 64 [2023-02-17 05:48:01,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 98 SyntacticMatches, 18 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1906 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=1070, Invalid=13450, Unknown=0, NotChecked=0, Total=14520 [2023-02-17 05:48:01,858 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 516 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 240 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 2010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 240 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-17 05:48:01,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [536 Valid, 890 Invalid, 2010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [240 Valid, 1770 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-17 05:48:01,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-02-17 05:48:01,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2023-02-17 05:48:01,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.0232558139534884) internal successors, (44), 44 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 18 states have return successors, (19), 18 states have call predecessors, (19), 2 states have call successors, (19) [2023-02-17 05:48:01,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2023-02-17 05:48:01,863 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 101 [2023-02-17 05:48:01,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:48:01,864 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2023-02-17 05:48:01,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 86 states, 85 states have (on average 1.2470588235294118) internal successors, (106), 54 states have internal predecessors, (106), 18 states have call successors, (18), 1 states have call predecessors, (18), 32 states have return successors, (32), 32 states have call predecessors, (32), 18 states have call successors, (32) [2023-02-17 05:48:01,864 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2023-02-17 05:48:01,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-02-17 05:48:01,865 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:48:01,866 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:48:01,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-02-17 05:48:02,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:48:02,069 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:48:02,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:48:02,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1211116620, now seen corresponding path program 9 times [2023-02-17 05:48:02,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:48:02,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1293264152] [2023-02-17 05:48:02,071 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 05:48:02,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:48:02,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:48:02,072 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:48:02,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-17 05:48:02,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2023-02-17 05:48:02,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:48:02,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 76 conjunts are in the unsatisfiable core [2023-02-17 05:48:02,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:48:03,080 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2023-02-17 05:48:03,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:48:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 731 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2023-02-17 05:48:13,004 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:48:13,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1293264152] [2023-02-17 05:48:13,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1293264152] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:48:13,005 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:48:13,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 57] total 96 [2023-02-17 05:48:13,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017368819] [2023-02-17 05:48:13,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:48:13,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2023-02-17 05:48:13,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:48:13,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2023-02-17 05:48:13,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=8773, Unknown=0, NotChecked=0, Total=9120 [2023-02-17 05:48:13,007 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand has 96 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 60 states have internal predecessors, (118), 20 states have call successors, (20), 1 states have call predecessors, (20), 36 states have return successors, (36), 36 states have call predecessors, (36), 20 states have call successors, (36) [2023-02-17 05:48:19,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:48:19,056 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2023-02-17 05:48:19,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-02-17 05:48:19,057 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 60 states have internal predecessors, (118), 20 states have call successors, (20), 1 states have call predecessors, (20), 36 states have return successors, (36), 36 states have call predecessors, (36), 20 states have call successors, (36) Word has length 113 [2023-02-17 05:48:19,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:48:19,058 INFO L225 Difference]: With dead ends: 76 [2023-02-17 05:48:19,058 INFO L226 Difference]: Without dead ends: 70 [2023-02-17 05:48:19,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 110 SyntacticMatches, 20 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2377 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=1274, Invalid=16816, Unknown=0, NotChecked=0, Total=18090 [2023-02-17 05:48:19,060 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 652 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 2540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-02-17 05:48:19,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [674 Valid, 1113 Invalid, 2540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-02-17 05:48:19,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-02-17 05:48:19,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2023-02-17 05:48:19,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 47 states have (on average 1.0212765957446808) internal successors, (48), 48 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 20 states have return successors, (21), 20 states have call predecessors, (21), 2 states have call successors, (21) [2023-02-17 05:48:19,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2023-02-17 05:48:19,067 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 113 [2023-02-17 05:48:19,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:48:19,067 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2023-02-17 05:48:19,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 1.2421052631578948) internal successors, (118), 60 states have internal predecessors, (118), 20 states have call successors, (20), 1 states have call predecessors, (20), 36 states have return successors, (36), 36 states have call predecessors, (36), 20 states have call successors, (36) [2023-02-17 05:48:19,068 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2023-02-17 05:48:19,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-02-17 05:48:19,069 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:48:19,069 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:48:19,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-02-17 05:48:19,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:48:19,277 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:48:19,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:48:19,278 INFO L85 PathProgramCache]: Analyzing trace with hash 685850484, now seen corresponding path program 10 times [2023-02-17 05:48:19,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:48:19,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65515221] [2023-02-17 05:48:19,278 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 05:48:19,278 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:48:19,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:48:19,280 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:48:19,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-02-17 05:48:19,371 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 05:48:19,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:48:19,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 84 conjunts are in the unsatisfiable core [2023-02-17 05:48:19,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:48:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2023-02-17 05:48:20,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:48:33,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 912 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-02-17 05:48:33,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:48:33,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65515221] [2023-02-17 05:48:33,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65515221] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:48:33,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:48:33,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 63] total 106 [2023-02-17 05:48:33,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256103367] [2023-02-17 05:48:33,158 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:48:33,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 106 states [2023-02-17 05:48:33,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:48:33,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants. [2023-02-17 05:48:33,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=385, Invalid=10745, Unknown=0, NotChecked=0, Total=11130 [2023-02-17 05:48:33,161 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand has 106 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 66 states have internal predecessors, (130), 22 states have call successors, (22), 1 states have call predecessors, (22), 40 states have return successors, (40), 40 states have call predecessors, (40), 22 states have call successors, (40) [2023-02-17 05:48:40,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:48:40,742 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2023-02-17 05:48:40,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-02-17 05:48:40,743 INFO L78 Accepts]: Start accepts. Automaton has has 106 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 66 states have internal predecessors, (130), 22 states have call successors, (22), 1 states have call predecessors, (22), 40 states have return successors, (40), 40 states have call predecessors, (40), 22 states have call successors, (40) Word has length 125 [2023-02-17 05:48:40,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:48:40,744 INFO L225 Difference]: With dead ends: 82 [2023-02-17 05:48:40,744 INFO L226 Difference]: Without dead ends: 76 [2023-02-17 05:48:40,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 122 SyntacticMatches, 22 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2900 ImplicationChecksByTransitivity, 17.2s TimeCoverageRelationStatistics Valid=1494, Invalid=20558, Unknown=0, NotChecked=0, Total=22052 [2023-02-17 05:48:40,747 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 594 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 2582 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 2857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-02-17 05:48:40,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 1401 Invalid, 2857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 2582 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-02-17 05:48:40,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-02-17 05:48:40,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-02-17 05:48:40,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 52 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 22 states have return successors, (23), 22 states have call predecessors, (23), 2 states have call successors, (23) [2023-02-17 05:48:40,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2023-02-17 05:48:40,752 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 125 [2023-02-17 05:48:40,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:48:40,753 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2023-02-17 05:48:40,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 106 states, 105 states have (on average 1.2380952380952381) internal successors, (130), 66 states have internal predecessors, (130), 22 states have call successors, (22), 1 states have call predecessors, (22), 40 states have return successors, (40), 40 states have call predecessors, (40), 22 states have call successors, (40) [2023-02-17 05:48:40,753 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2023-02-17 05:48:40,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-02-17 05:48:40,754 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:48:40,755 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:48:40,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-02-17 05:48:40,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:48:40,965 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:48:40,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:48:40,966 INFO L85 PathProgramCache]: Analyzing trace with hash -2059891916, now seen corresponding path program 11 times [2023-02-17 05:48:40,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:48:40,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1706749256] [2023-02-17 05:48:40,967 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 05:48:40,967 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:48:40,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:48:40,968 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:48:40,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-02-17 05:48:41,118 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2023-02-17 05:48:41,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:48:41,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 92 conjunts are in the unsatisfiable core [2023-02-17 05:48:41,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:48:42,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 672 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2023-02-17 05:48:42,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:48:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 0 proven. 1113 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-02-17 05:48:58,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:48:58,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1706749256] [2023-02-17 05:48:58,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1706749256] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:48:58,120 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:48:58,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 69] total 116 [2023-02-17 05:48:58,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964262265] [2023-02-17 05:48:58,120 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:48:58,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 116 states [2023-02-17 05:48:58,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:48:58,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants. [2023-02-17 05:48:58,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=12917, Unknown=0, NotChecked=0, Total=13340 [2023-02-17 05:48:58,126 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand has 116 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 72 states have internal predecessors, (142), 24 states have call successors, (24), 1 states have call predecessors, (24), 44 states have return successors, (44), 44 states have call predecessors, (44), 24 states have call successors, (44) [2023-02-17 05:49:07,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:49:07,249 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2023-02-17 05:49:07,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2023-02-17 05:49:07,250 INFO L78 Accepts]: Start accepts. Automaton has has 116 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 72 states have internal predecessors, (142), 24 states have call successors, (24), 1 states have call predecessors, (24), 44 states have return successors, (44), 44 states have call predecessors, (44), 24 states have call successors, (44) Word has length 137 [2023-02-17 05:49:07,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:49:07,253 INFO L225 Difference]: With dead ends: 88 [2023-02-17 05:49:07,253 INFO L226 Difference]: Without dead ends: 82 [2023-02-17 05:49:07,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 134 SyntacticMatches, 24 SemanticMatches, 161 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3475 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=1730, Invalid=24676, Unknown=0, NotChecked=0, Total=26406 [2023-02-17 05:49:07,256 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 834 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 2810 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 3203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 2810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-02-17 05:49:07,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 1444 Invalid, 3203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 2810 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-02-17 05:49:07,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-02-17 05:49:07,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-02-17 05:49:07,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 55 states have (on average 1.018181818181818) internal successors, (56), 56 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 24 states have return successors, (25), 24 states have call predecessors, (25), 2 states have call successors, (25) [2023-02-17 05:49:07,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2023-02-17 05:49:07,272 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 137 [2023-02-17 05:49:07,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:49:07,272 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2023-02-17 05:49:07,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 116 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 72 states have internal predecessors, (142), 24 states have call successors, (24), 1 states have call predecessors, (24), 44 states have return successors, (44), 44 states have call predecessors, (44), 24 states have call successors, (44) [2023-02-17 05:49:07,274 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2023-02-17 05:49:07,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-02-17 05:49:07,275 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:49:07,275 INFO L195 NwaCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:49:07,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-02-17 05:49:07,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:49:07,486 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:49:07,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:49:07,487 INFO L85 PathProgramCache]: Analyzing trace with hash -706365708, now seen corresponding path program 12 times [2023-02-17 05:49:07,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:49:07,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020885666] [2023-02-17 05:49:07,487 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 05:49:07,487 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:49:07,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:49:07,489 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:49:07,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-02-17 05:49:07,673 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 24 check-sat command(s) [2023-02-17 05:49:07,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:49:07,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 100 conjunts are in the unsatisfiable core [2023-02-17 05:49:07,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:49:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 805 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2023-02-17 05:49:09,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:49:28,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1610 backedges. 0 proven. 1334 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2023-02-17 05:49:28,303 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:49:28,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020885666] [2023-02-17 05:49:28,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2020885666] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:49:28,304 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:49:28,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 75] total 126 [2023-02-17 05:49:28,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841440698] [2023-02-17 05:49:28,304 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:49:28,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 126 states [2023-02-17 05:49:28,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:49:28,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants. [2023-02-17 05:49:28,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=15289, Unknown=0, NotChecked=0, Total=15750 [2023-02-17 05:49:28,307 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand has 126 states, 125 states have (on average 1.232) internal successors, (154), 78 states have internal predecessors, (154), 26 states have call successors, (26), 1 states have call predecessors, (26), 48 states have return successors, (48), 48 states have call predecessors, (48), 26 states have call successors, (48) [2023-02-17 05:49:39,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:49:39,776 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2023-02-17 05:49:39,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2023-02-17 05:49:39,777 INFO L78 Accepts]: Start accepts. Automaton has has 126 states, 125 states have (on average 1.232) internal successors, (154), 78 states have internal predecessors, (154), 26 states have call successors, (26), 1 states have call predecessors, (26), 48 states have return successors, (48), 48 states have call predecessors, (48), 26 states have call successors, (48) Word has length 149 [2023-02-17 05:49:39,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:49:39,778 INFO L225 Difference]: With dead ends: 94 [2023-02-17 05:49:39,778 INFO L226 Difference]: Without dead ends: 88 [2023-02-17 05:49:39,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 146 SyntacticMatches, 26 SemanticMatches, 175 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4102 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=1982, Invalid=29170, Unknown=0, NotChecked=0, Total=31152 [2023-02-17 05:49:39,780 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 356 mSDsluCounter, 2019 mSDsCounter, 0 mSdLazyCounter, 4039 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 4190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 4039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-02-17 05:49:39,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 2050 Invalid, 4190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 4039 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-02-17 05:49:39,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-17 05:49:39,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-02-17 05:49:39,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 59 states have (on average 1.0169491525423728) internal successors, (60), 60 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 26 states have return successors, (27), 26 states have call predecessors, (27), 2 states have call successors, (27) [2023-02-17 05:49:39,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2023-02-17 05:49:39,786 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 149 [2023-02-17 05:49:39,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:49:39,787 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2023-02-17 05:49:39,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 126 states, 125 states have (on average 1.232) internal successors, (154), 78 states have internal predecessors, (154), 26 states have call successors, (26), 1 states have call predecessors, (26), 48 states have return successors, (48), 48 states have call predecessors, (48), 26 states have call successors, (48) [2023-02-17 05:49:39,787 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2023-02-17 05:49:39,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-02-17 05:49:39,788 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:49:39,789 INFO L195 NwaCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:49:39,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-02-17 05:49:39,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:49:40,000 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:49:40,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:49:40,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1677247156, now seen corresponding path program 13 times [2023-02-17 05:49:40,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:49:40,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [924179091] [2023-02-17 05:49:40,000 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 05:49:40,001 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:49:40,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:49:40,002 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:49:40,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-02-17 05:49:40,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 05:49:40,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 108 conjunts are in the unsatisfiable core [2023-02-17 05:49:40,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:49:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2023-02-17 05:49:42,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:50:05,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1900 backedges. 0 proven. 1575 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2023-02-17 05:50:05,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:50:05,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [924179091] [2023-02-17 05:50:05,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [924179091] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:50:05,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:50:05,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 81] total 136 [2023-02-17 05:50:05,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731832566] [2023-02-17 05:50:05,224 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:50:05,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 136 states [2023-02-17 05:50:05,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:50:05,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants. [2023-02-17 05:50:05,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=499, Invalid=17861, Unknown=0, NotChecked=0, Total=18360 [2023-02-17 05:50:05,227 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand has 136 states, 135 states have (on average 1.2296296296296296) internal successors, (166), 84 states have internal predecessors, (166), 28 states have call successors, (28), 1 states have call predecessors, (28), 52 states have return successors, (52), 52 states have call predecessors, (52), 28 states have call successors, (52) [2023-02-17 05:50:18,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:50:18,980 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2023-02-17 05:50:18,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-02-17 05:50:18,981 INFO L78 Accepts]: Start accepts. Automaton has has 136 states, 135 states have (on average 1.2296296296296296) internal successors, (166), 84 states have internal predecessors, (166), 28 states have call successors, (28), 1 states have call predecessors, (28), 52 states have return successors, (52), 52 states have call predecessors, (52), 28 states have call successors, (52) Word has length 161 [2023-02-17 05:50:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:50:18,982 INFO L225 Difference]: With dead ends: 100 [2023-02-17 05:50:18,982 INFO L226 Difference]: Without dead ends: 94 [2023-02-17 05:50:18,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 158 SyntacticMatches, 28 SemanticMatches, 189 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4781 ImplicationChecksByTransitivity, 31.4s TimeCoverageRelationStatistics Valid=2250, Invalid=34040, Unknown=0, NotChecked=0, Total=36290 [2023-02-17 05:50:18,986 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1464 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 4602 mSolverCounterSat, 704 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 2237 SdHoareTripleChecker+Invalid, 5306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 704 IncrementalHoareTripleChecker+Valid, 4602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-02-17 05:50:18,986 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 2237 Invalid, 5306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [704 Valid, 4602 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2023-02-17 05:50:18,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-17 05:50:18,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-02-17 05:50:18,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 63 states have (on average 1.0158730158730158) internal successors, (64), 64 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 28 states have return successors, (29), 28 states have call predecessors, (29), 2 states have call successors, (29) [2023-02-17 05:50:18,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2023-02-17 05:50:18,991 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 161 [2023-02-17 05:50:18,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:50:18,992 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2023-02-17 05:50:18,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 136 states, 135 states have (on average 1.2296296296296296) internal successors, (166), 84 states have internal predecessors, (166), 28 states have call successors, (28), 1 states have call predecessors, (28), 52 states have return successors, (52), 52 states have call predecessors, (52), 28 states have call successors, (52) [2023-02-17 05:50:18,992 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2023-02-17 05:50:18,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2023-02-17 05:50:18,994 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:50:18,994 INFO L195 NwaCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:50:19,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-02-17 05:50:19,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:50:19,205 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:50:19,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:50:19,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1199460748, now seen corresponding path program 14 times [2023-02-17 05:50:19,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:50:19,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811859031] [2023-02-17 05:50:19,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 05:50:19,206 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:50:19,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:50:19,207 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:50:19,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-02-17 05:50:19,412 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 05:50:19,412 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:50:19,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 116 conjunts are in the unsatisfiable core [2023-02-17 05:50:19,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:50:21,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 1107 refuted. 0 times theorem prover too weak. 1107 trivial. 0 not checked. [2023-02-17 05:50:21,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 05:50:50,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2214 backedges. 0 proven. 1836 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2023-02-17 05:50:50,142 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 05:50:50,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811859031] [2023-02-17 05:50:50,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811859031] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 05:50:50,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 05:50:50,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 87] total 146 [2023-02-17 05:50:50,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339029203] [2023-02-17 05:50:50,143 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 05:50:50,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 146 states [2023-02-17 05:50:50,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 05:50:50,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants. [2023-02-17 05:50:50,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=20633, Unknown=0, NotChecked=0, Total=21170 [2023-02-17 05:50:50,146 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand has 146 states, 145 states have (on average 1.2275862068965517) internal successors, (178), 90 states have internal predecessors, (178), 30 states have call successors, (30), 1 states have call predecessors, (30), 56 states have return successors, (56), 56 states have call predecessors, (56), 30 states have call successors, (56) [2023-02-17 05:51:06,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 05:51:06,157 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2023-02-17 05:51:06,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2023-02-17 05:51:06,158 INFO L78 Accepts]: Start accepts. Automaton has has 146 states, 145 states have (on average 1.2275862068965517) internal successors, (178), 90 states have internal predecessors, (178), 30 states have call successors, (30), 1 states have call predecessors, (30), 56 states have return successors, (56), 56 states have call predecessors, (56), 30 states have call successors, (56) Word has length 173 [2023-02-17 05:51:06,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 05:51:06,159 INFO L225 Difference]: With dead ends: 106 [2023-02-17 05:51:06,159 INFO L226 Difference]: Without dead ends: 100 [2023-02-17 05:51:06,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 170 SyntacticMatches, 30 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5512 ImplicationChecksByTransitivity, 38.3s TimeCoverageRelationStatistics Valid=2534, Invalid=39286, Unknown=0, NotChecked=0, Total=41820 [2023-02-17 05:51:06,162 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 644 mSDsluCounter, 2490 mSDsCounter, 0 mSdLazyCounter, 5040 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 5331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 5040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2023-02-17 05:51:06,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 2525 Invalid, 5331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 5040 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2023-02-17 05:51:06,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-02-17 05:51:06,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-02-17 05:51:06,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 67 states have (on average 1.0149253731343284) internal successors, (68), 68 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 30 states have return successors, (31), 30 states have call predecessors, (31), 2 states have call successors, (31) [2023-02-17 05:51:06,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 101 transitions. [2023-02-17 05:51:06,167 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 101 transitions. Word has length 173 [2023-02-17 05:51:06,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 05:51:06,168 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 101 transitions. [2023-02-17 05:51:06,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 146 states, 145 states have (on average 1.2275862068965517) internal successors, (178), 90 states have internal predecessors, (178), 30 states have call successors, (30), 1 states have call predecessors, (30), 56 states have return successors, (56), 56 states have call predecessors, (56), 30 states have call successors, (56) [2023-02-17 05:51:06,168 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 101 transitions. [2023-02-17 05:51:06,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2023-02-17 05:51:06,169 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 05:51:06,169 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 05:51:06,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-02-17 05:51:06,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:51:06,370 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 05:51:06,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 05:51:06,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1668253132, now seen corresponding path program 15 times [2023-02-17 05:51:06,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 05:51:06,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60409909] [2023-02-17 05:51:06,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 05:51:06,372 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 05:51:06,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 05:51:06,374 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 05:51:06,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-02-17 05:51:06,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2023-02-17 05:51:06,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 05:51:06,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 124 conjunts are in the unsatisfiable core [2023-02-17 05:51:06,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 05:51:09,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2552 backedges. 0 proven. 1276 refuted. 0 times theorem prover too weak. 1276 trivial. 0 not checked. [2023-02-17 05:51:09,527 INFO L328 TraceCheckSpWp]: Computing backward predicates...