./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-acceleration/diamond_1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e1ff0e6 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/loop-acceleration/diamond_1-1.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 bd9be28702be20fbd75b67eebfdc5f85895ff340c238c235c391c2a8578e7b23 --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-14 23:08:40,433 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 23:08:40,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 23:08:40,463 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 23:08:40,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 23:08:40,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 23:08:40,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 23:08:40,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 23:08:40,476 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 23:08:40,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 23:08:40,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 23:08:40,484 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 23:08:40,484 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 23:08:40,487 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 23:08:40,489 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 23:08:40,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 23:08:40,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 23:08:40,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 23:08:40,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 23:08:40,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 23:08:40,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 23:08:40,504 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 23:08:40,505 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 23:08:40,506 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 23:08:40,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 23:08:40,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 23:08:40,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 23:08:40,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 23:08:40,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 23:08:40,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 23:08:40,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 23:08:40,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 23:08:40,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 23:08:40,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 23:08:40,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 23:08:40,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 23:08:40,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 23:08:40,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 23:08:40,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 23:08:40,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 23:08:40,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 23:08:40,526 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 23:08:40,558 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 23:08:40,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 23:08:40,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 23:08:40,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 23:08:40,559 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 23:08:40,560 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 23:08:40,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 23:08:40,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 23:08:40,560 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 23:08:40,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 23:08:40,561 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 23:08:40,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 23:08:40,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 23:08:40,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 23:08:40,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 23:08:40,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 23:08:40,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 23:08:40,562 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 23:08:40,562 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 23:08:40,562 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 23:08:40,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 23:08:40,563 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 23:08:40,563 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 23:08:40,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 23:08:40,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 23:08:40,564 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 23:08:40,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 23:08:40,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 23:08:40,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 23:08:40,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 23:08:40,565 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 23:08:40,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 23:08:40,565 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 23:08:40,565 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 23:08:40,565 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 23:08:40,566 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd9be28702be20fbd75b67eebfdc5f85895ff340c238c235c391c2a8578e7b23 [2023-02-14 23:08:40,750 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 23:08:40,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 23:08:40,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 23:08:40,778 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 23:08:40,778 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 23:08:40,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/diamond_1-1.c [2023-02-14 23:08:41,975 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 23:08:42,164 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 23:08:42,165 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/diamond_1-1.c [2023-02-14 23:08:42,171 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2beccf0b6/b45f74a155454f568b49a08ae6959945/FLAGdc0c0f176 [2023-02-14 23:08:42,182 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2beccf0b6/b45f74a155454f568b49a08ae6959945 [2023-02-14 23:08:42,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 23:08:42,184 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 23:08:42,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 23:08:42,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 23:08:42,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 23:08:42,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:08:42" (1/1) ... [2023-02-14 23:08:42,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39185cb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:08:42, skipping insertion in model container [2023-02-14 23:08:42,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 11:08:42" (1/1) ... [2023-02-14 23:08:42,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 23:08:42,210 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 23:08:42,312 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/loop-acceleration/diamond_1-1.c[373,386] [2023-02-14 23:08:42,330 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 23:08:42,341 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 23:08:42,352 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/loop-acceleration/diamond_1-1.c[373,386] [2023-02-14 23:08:42,365 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 23:08:42,377 INFO L208 MainTranslator]: Completed translation [2023-02-14 23:08:42,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:08:42 WrapperNode [2023-02-14 23:08:42,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 23:08:42,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 23:08:42,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 23:08:42,379 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 23:08:42,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:08:42" (1/1) ... [2023-02-14 23:08:42,390 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:08:42" (1/1) ... [2023-02-14 23:08:42,406 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2023-02-14 23:08:42,407 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 23:08:42,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 23:08:42,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 23:08:42,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 23:08:42,414 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:08:42" (1/1) ... [2023-02-14 23:08:42,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:08:42" (1/1) ... [2023-02-14 23:08:42,421 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:08:42" (1/1) ... [2023-02-14 23:08:42,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:08:42" (1/1) ... [2023-02-14 23:08:42,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:08:42" (1/1) ... [2023-02-14 23:08:42,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:08:42" (1/1) ... [2023-02-14 23:08:42,428 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:08:42" (1/1) ... [2023-02-14 23:08:42,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:08:42" (1/1) ... [2023-02-14 23:08:42,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 23:08:42,434 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 23:08:42,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 23:08:42,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 23:08:42,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:08:42" (1/1) ... [2023-02-14 23:08:42,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 23:08:42,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:08:42,467 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) [2023-02-14 23:08:42,480 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 [2023-02-14 23:08:42,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 23:08:42,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 23:08:42,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 23:08:42,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 23:08:42,555 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 23:08:42,558 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 23:08:42,642 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 23:08:42,647 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 23:08:42,648 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-14 23:08:42,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:08:42 BoogieIcfgContainer [2023-02-14 23:08:42,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 23:08:42,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 23:08:42,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 23:08:42,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 23:08:42,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 11:08:42" (1/3) ... [2023-02-14 23:08:42,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4429215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:08:42, skipping insertion in model container [2023-02-14 23:08:42,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 11:08:42" (2/3) ... [2023-02-14 23:08:42,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4429215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 11:08:42, skipping insertion in model container [2023-02-14 23:08:42,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:08:42" (3/3) ... [2023-02-14 23:08:42,657 INFO L112 eAbstractionObserver]: Analyzing ICFG diamond_1-1.c [2023-02-14 23:08:42,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 23:08:42,673 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 23:08:42,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 23:08:42,718 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;@523a90b2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 23:08:42,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 23:08:42,722 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:42,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-14 23:08:42,727 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:08:42,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-14 23:08:42,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:08:42,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:08:42,733 INFO L85 PathProgramCache]: Analyzing trace with hash 889937703, now seen corresponding path program 1 times [2023-02-14 23:08:42,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:08:42,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13411415] [2023-02-14 23:08:42,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:08:42,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:08:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:08:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:42,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:08:42,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13411415] [2023-02-14 23:08:42,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13411415] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 23:08:42,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 23:08:42,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 23:08:42,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700443245] [2023-02-14 23:08:42,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 23:08:42,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 23:08:42,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:08:42,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 23:08:42,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 23:08:42,890 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:42,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:08:42,915 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2023-02-14 23:08:42,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 23:08:42,934 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-14 23:08:42,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:08:42,953 INFO L225 Difference]: With dead ends: 20 [2023-02-14 23:08:42,954 INFO L226 Difference]: Without dead ends: 8 [2023-02-14 23:08:42,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 23:08:42,959 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 23:08:42,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 23:08:42,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2023-02-14 23:08:42,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2023-02-14 23:08:42,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:42,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2023-02-14 23:08:42,989 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2023-02-14 23:08:42,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:08:42,990 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2023-02-14 23:08:42,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:42,991 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2023-02-14 23:08:42,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-14 23:08:42,991 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:08:42,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-14 23:08:42,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 23:08:42,993 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:08:42,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:08:42,994 INFO L85 PathProgramCache]: Analyzing trace with hash 889639793, now seen corresponding path program 1 times [2023-02-14 23:08:42,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:08:42,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972022032] [2023-02-14 23:08:42,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:08:42,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:08:43,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:08:43,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:43,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:08:43,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972022032] [2023-02-14 23:08:43,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972022032] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 23:08:43,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 23:08:43,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 23:08:43,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428617951] [2023-02-14 23:08:43,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 23:08:43,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 23:08:43,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:08:43,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 23:08:43,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 23:08:43,206 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:43,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:08:43,233 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2023-02-14 23:08:43,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 23:08:43,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-02-14 23:08:43,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:08:43,236 INFO L225 Difference]: With dead ends: 14 [2023-02-14 23:08:43,236 INFO L226 Difference]: Without dead ends: 10 [2023-02-14 23:08:43,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 23:08:43,237 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 23:08:43,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 9 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 23:08:43,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-02-14 23:08:43,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2023-02-14 23:08:43,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:43,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-02-14 23:08:43,242 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-02-14 23:08:43,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:08:43,242 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-02-14 23:08:43,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:43,243 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-02-14 23:08:43,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-14 23:08:43,243 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:08:43,243 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:08:43,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 23:08:43,244 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:08:43,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:08:43,245 INFO L85 PathProgramCache]: Analyzing trace with hash 297538966, now seen corresponding path program 1 times [2023-02-14 23:08:43,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:08:43,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100833765] [2023-02-14 23:08:43,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:08:43,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:08:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:08:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:43,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:08:43,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100833765] [2023-02-14 23:08:43,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100833765] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:08:43,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008908635] [2023-02-14 23:08:43,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:08:43,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:08:43,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:08:43,408 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:08:43,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 23:08:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:08:43,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 23:08:43,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:08:43,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:43,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:08:43,540 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:43,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008908635] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:08:43,541 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:08:43,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-02-14 23:08:43,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137406742] [2023-02-14 23:08:43,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:08:43,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-14 23:08:43,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:08:43,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-14 23:08:43,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-02-14 23:08:43,548 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:43,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:08:43,625 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2023-02-14 23:08:43,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 23:08:43,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-14 23:08:43,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:08:43,627 INFO L225 Difference]: With dead ends: 19 [2023-02-14 23:08:43,627 INFO L226 Difference]: Without dead ends: 15 [2023-02-14 23:08:43,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2023-02-14 23:08:43,628 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 23:08:43,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 12 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 23:08:43,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-02-14 23:08:43,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-02-14 23:08:43,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:43,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2023-02-14 23:08:43,633 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 8 [2023-02-14 23:08:43,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:08:43,633 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2023-02-14 23:08:43,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.0) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:43,633 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2023-02-14 23:08:43,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-14 23:08:43,634 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:08:43,634 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-02-14 23:08:43,643 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 23:08:43,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:08:43,840 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:08:43,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:08:43,841 INFO L85 PathProgramCache]: Analyzing trace with hash 742440183, now seen corresponding path program 1 times [2023-02-14 23:08:43,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:08:43,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913051984] [2023-02-14 23:08:43,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:08:43,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:08:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:08:43,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:43,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:08:43,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913051984] [2023-02-14 23:08:43,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913051984] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:08:43,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801881361] [2023-02-14 23:08:43,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:08:43,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:08:43,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:08:43,962 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:08:43,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 23:08:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:08:44,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-14 23:08:44,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:08:44,071 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:44,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:08:44,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:44,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801881361] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:08:44,138 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:08:44,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2023-02-14 23:08:44,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64232894] [2023-02-14 23:08:44,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:08:44,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-14 23:08:44,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:08:44,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-14 23:08:44,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-02-14 23:08:44,151 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:44,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:08:44,301 INFO L93 Difference]: Finished difference Result 30 states and 42 transitions. [2023-02-14 23:08:44,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 23:08:44,301 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-14 23:08:44,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:08:44,302 INFO L225 Difference]: With dead ends: 30 [2023-02-14 23:08:44,302 INFO L226 Difference]: Without dead ends: 26 [2023-02-14 23:08:44,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2023-02-14 23:08:44,303 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 6 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 23:08:44,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 23:08:44,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-14 23:08:44,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 19. [2023-02-14 23:08:44,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 25 transitions. [2023-02-14 23:08:44,309 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 25 transitions. Word has length 10 [2023-02-14 23:08:44,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:08:44,310 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 25 transitions. [2023-02-14 23:08:44,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:44,310 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 25 transitions. [2023-02-14 23:08:44,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 23:08:44,311 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:08:44,311 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2023-02-14 23:08:44,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 23:08:44,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-02-14 23:08:44,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:08:44,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:08:44,513 INFO L85 PathProgramCache]: Analyzing trace with hash -533681750, now seen corresponding path program 2 times [2023-02-14 23:08:44,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:08:44,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076047501] [2023-02-14 23:08:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:08:44,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:08:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:08:44,688 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:44,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:08:44,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076047501] [2023-02-14 23:08:44,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076047501] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:08:44,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244771655] [2023-02-14 23:08:44,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 23:08:44,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:08:44,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:08:44,697 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:08:44,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 23:08:44,740 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 23:08:44,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 23:08:44,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 13 conjunts are in the unsatisfiable core [2023-02-14 23:08:44,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:08:44,807 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:44,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:08:44,930 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:44,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [244771655] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:08:44,930 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:08:44,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-02-14 23:08:44,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559400314] [2023-02-14 23:08:44,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:08:44,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-14 23:08:44,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:08:44,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-14 23:08:44,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2023-02-14 23:08:44,934 INFO L87 Difference]: Start difference. First operand 19 states and 25 transitions. Second operand has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:45,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:08:45,400 INFO L93 Difference]: Finished difference Result 65 states and 95 transitions. [2023-02-14 23:08:45,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-14 23:08:45,401 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-14 23:08:45,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:08:45,401 INFO L225 Difference]: With dead ends: 65 [2023-02-14 23:08:45,402 INFO L226 Difference]: Without dead ends: 61 [2023-02-14 23:08:45,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=150, Invalid=230, Unknown=0, NotChecked=0, Total=380 [2023-02-14 23:08:45,403 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 7 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 23:08:45,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 24 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 23:08:45,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-02-14 23:08:45,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 31. [2023-02-14 23:08:45,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 30 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:45,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 43 transitions. [2023-02-14 23:08:45,411 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 43 transitions. Word has length 16 [2023-02-14 23:08:45,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:08:45,412 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 43 transitions. [2023-02-14 23:08:45,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:45,412 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 43 transitions. [2023-02-14 23:08:45,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 23:08:45,413 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:08:45,413 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1] [2023-02-14 23:08:45,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 23:08:45,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:08:45,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:08:45,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:08:45,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1288795907, now seen corresponding path program 2 times [2023-02-14 23:08:45,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:08:45,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002713246] [2023-02-14 23:08:45,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:08:45,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:08:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:08:45,792 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:45,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:08:45,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002713246] [2023-02-14 23:08:45,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002713246] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:08:45,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010532295] [2023-02-14 23:08:45,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-14 23:08:45,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:08:45,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:08:45,797 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:08:45,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 23:08:45,836 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-14 23:08:45,836 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 23:08:45,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-14 23:08:45,838 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:08:45,925 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:45,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:08:46,063 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:46,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010532295] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:08:46,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:08:46,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2023-02-14 23:08:46,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382015702] [2023-02-14 23:08:46,063 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:08:46,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-14 23:08:46,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:08:46,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-14 23:08:46,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2023-02-14 23:08:46,065 INFO L87 Difference]: Start difference. First operand 31 states and 43 transitions. Second operand has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:47,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:08:47,052 INFO L93 Difference]: Finished difference Result 143 states and 211 transitions. [2023-02-14 23:08:47,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-14 23:08:47,054 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-02-14 23:08:47,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:08:47,055 INFO L225 Difference]: With dead ends: 143 [2023-02-14 23:08:47,055 INFO L226 Difference]: Without dead ends: 139 [2023-02-14 23:08:47,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=196, Invalid=310, Unknown=0, NotChecked=0, Total=506 [2023-02-14 23:08:47,056 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 9 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-14 23:08:47,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 30 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-14 23:08:47,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-02-14 23:08:47,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 75. [2023-02-14 23:08:47,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 74 states have (on average 1.472972972972973) internal successors, (109), 74 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:47,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 109 transitions. [2023-02-14 23:08:47,096 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 109 transitions. Word has length 18 [2023-02-14 23:08:47,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:08:47,097 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 109 transitions. [2023-02-14 23:08:47,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:47,097 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 109 transitions. [2023-02-14 23:08:47,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-14 23:08:47,098 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:08:47,099 INFO L195 NwaCegarLoop]: trace histogram [9, 6, 3, 1, 1, 1, 1, 1, 1] [2023-02-14 23:08:47,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-14 23:08:47,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:08:47,305 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:08:47,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:08:47,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1917295048, now seen corresponding path program 1 times [2023-02-14 23:08:47,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:08:47,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521967990] [2023-02-14 23:08:47,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:08:47,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:08:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:08:47,351 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-02-14 23:08:47,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:08:47,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521967990] [2023-02-14 23:08:47,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521967990] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 23:08:47,352 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 23:08:47,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 23:08:47,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332691596] [2023-02-14 23:08:47,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 23:08:47,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 23:08:47,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:08:47,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 23:08:47,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 23:08:47,354 INFO L87 Difference]: Start difference. First operand 75 states and 109 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:47,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:08:47,385 INFO L93 Difference]: Finished difference Result 133 states and 191 transitions. [2023-02-14 23:08:47,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 23:08:47,386 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2023-02-14 23:08:47,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:08:47,387 INFO L225 Difference]: With dead ends: 133 [2023-02-14 23:08:47,387 INFO L226 Difference]: Without dead ends: 88 [2023-02-14 23:08:47,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 23:08:47,388 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 23:08:47,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 23:08:47,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-14 23:08:47,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 58. [2023-02-14 23:08:47,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.280701754385965) internal successors, (73), 57 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 73 transitions. [2023-02-14 23:08:47,405 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 73 transitions. Word has length 24 [2023-02-14 23:08:47,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:08:47,406 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 73 transitions. [2023-02-14 23:08:47,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:47,406 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 73 transitions. [2023-02-14 23:08:47,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-14 23:08:47,407 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:08:47,407 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 23:08:47,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-14 23:08:47,407 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:08:47,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:08:47,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1773006918, now seen corresponding path program 2 times [2023-02-14 23:08:47,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:08:47,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933578292] [2023-02-14 23:08:47,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:08:47,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:08:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:08:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-02-14 23:08:47,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:08:47,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933578292] [2023-02-14 23:08:47,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933578292] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 23:08:47,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 23:08:47,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 23:08:47,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052464589] [2023-02-14 23:08:47,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 23:08:47,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-14 23:08:47,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:08:47,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-14 23:08:47,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 23:08:47,440 INFO L87 Difference]: Start difference. First operand 58 states and 73 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:47,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:08:47,465 INFO L93 Difference]: Finished difference Result 85 states and 99 transitions. [2023-02-14 23:08:47,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-14 23:08:47,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2023-02-14 23:08:47,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:08:47,466 INFO L225 Difference]: With dead ends: 85 [2023-02-14 23:08:47,467 INFO L226 Difference]: Without dead ends: 62 [2023-02-14 23:08:47,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-14 23:08:47,468 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 23:08:47,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 23:08:47,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2023-02-14 23:08:47,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2023-02-14 23:08:47,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.0526315789473684) internal successors, (60), 57 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:47,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2023-02-14 23:08:47,503 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 28 [2023-02-14 23:08:47,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:08:47,504 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2023-02-14 23:08:47,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:47,504 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2023-02-14 23:08:47,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-14 23:08:47,507 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:08:47,507 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1] [2023-02-14 23:08:47,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-14 23:08:47,508 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:08:47,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:08:47,508 INFO L85 PathProgramCache]: Analyzing trace with hash 733049517, now seen corresponding path program 3 times [2023-02-14 23:08:47,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:08:47,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108894702] [2023-02-14 23:08:47,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:08:47,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:08:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:08:47,792 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 144 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:47,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:08:47,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108894702] [2023-02-14 23:08:47,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108894702] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:08:47,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950372731] [2023-02-14 23:08:47,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 23:08:47,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:08:47,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:08:47,795 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:08:47,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 23:08:47,839 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-02-14 23:08:47,839 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 23:08:47,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-14 23:08:47,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:08:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2023-02-14 23:08:48,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 23:08:48,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950372731] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 23:08:48,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-14 23:08:48,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 19 [2023-02-14 23:08:48,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135094837] [2023-02-14 23:08:48,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 23:08:48,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 23:08:48,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:08:48,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 23:08:48,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2023-02-14 23:08:48,277 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:08:48,364 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2023-02-14 23:08:48,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 23:08:48,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-02-14 23:08:48,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:08:48,365 INFO L225 Difference]: With dead ends: 62 [2023-02-14 23:08:48,365 INFO L226 Difference]: Without dead ends: 35 [2023-02-14 23:08:48,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-02-14 23:08:48,368 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 3 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 23:08:48,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 13 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 23:08:48,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-14 23:08:48,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-02-14 23:08:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:48,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2023-02-14 23:08:48,383 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 30 [2023-02-14 23:08:48,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:08:48,383 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2023-02-14 23:08:48,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:08:48,383 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2023-02-14 23:08:48,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-14 23:08:48,385 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:08:48,385 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1] [2023-02-14 23:08:48,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-14 23:08:48,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:08:48,590 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:08:48,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:08:48,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1122990309, now seen corresponding path program 3 times [2023-02-14 23:08:48,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:08:48,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065211459] [2023-02-14 23:08:48,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:08:48,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:08:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:08:48,910 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:48,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:08:48,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065211459] [2023-02-14 23:08:48,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065211459] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:08:48,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361565260] [2023-02-14 23:08:48,911 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-14 23:08:48,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:08:48,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:08:48,917 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:08:48,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 23:08:49,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2023-02-14 23:08:49,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 23:08:49,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 31 conjunts are in the unsatisfiable core [2023-02-14 23:08:49,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:08:49,182 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:49,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:08:49,656 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 196 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:08:49,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361565260] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:08:49,656 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:08:49,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2023-02-14 23:08:49,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38005725] [2023-02-14 23:08:49,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:08:49,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-14 23:08:49,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:08:49,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-14 23:08:49,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=738, Unknown=0, NotChecked=0, Total=1056 [2023-02-14 23:08:49,658 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:09:02,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:09:02,746 INFO L93 Difference]: Finished difference Result 71 states and 86 transitions. [2023-02-14 23:09:02,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-14 23:09:02,747 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-02-14 23:09:02,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:09:02,747 INFO L225 Difference]: With dead ends: 71 [2023-02-14 23:09:02,748 INFO L226 Difference]: Without dead ends: 67 [2023-02-14 23:09:02,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=780, Invalid=1382, Unknown=0, NotChecked=0, Total=2162 [2023-02-14 23:09:02,749 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 17 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-14 23:09:02,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 60 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-14 23:09:02,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-02-14 23:09:02,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-02-14 23:09:02,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0151515151515151) internal successors, (67), 66 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:09:02,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2023-02-14 23:09:02,764 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 34 [2023-02-14 23:09:02,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:09:02,765 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2023-02-14 23:09:02,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.0) internal successors, (66), 33 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:09:02,765 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2023-02-14 23:09:02,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-14 23:09:02,766 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 23:09:02,766 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 1, 1, 1, 1, 1, 1] [2023-02-14 23:09:02,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-14 23:09:02,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:09:02,971 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 23:09:02,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 23:09:02,972 INFO L85 PathProgramCache]: Analyzing trace with hash -111863989, now seen corresponding path program 4 times [2023-02-14 23:09:02,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 23:09:02,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196544951] [2023-02-14 23:09:02,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 23:09:02,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 23:09:03,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 23:09:03,961 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:09:03,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 23:09:03,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196544951] [2023-02-14 23:09:03,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196544951] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 23:09:03,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599748385] [2023-02-14 23:09:03,961 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-14 23:09:03,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:09:03,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 23:09:03,963 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 23:09:03,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-14 23:09:04,065 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-14 23:09:04,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-14 23:09:04,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 69 conjunts are in the unsatisfiable core [2023-02-14 23:09:04,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 23:09:05,454 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 900 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 23:09:05,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 23:09:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2023-02-14 23:09:05,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599748385] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 23:09:05,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-14 23:09:05,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 34, 5] total 67 [2023-02-14 23:09:05,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021656083] [2023-02-14 23:09:05,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-14 23:09:05,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-02-14 23:09:05,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 23:09:05,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-02-14 23:09:05,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=4111, Unknown=0, NotChecked=0, Total=4422 [2023-02-14 23:09:05,835 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 67 states, 67 states have (on average 2.029850746268657) internal successors, (136), 67 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:09:07,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 23:09:07,038 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2023-02-14 23:09:07,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-02-14 23:09:07,038 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 2.029850746268657) internal successors, (136), 67 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-02-14 23:09:07,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 23:09:07,039 INFO L225 Difference]: With dead ends: 72 [2023-02-14 23:09:07,039 INFO L226 Difference]: Without dead ends: 0 [2023-02-14 23:09:07,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=352, Invalid=4340, Unknown=0, NotChecked=0, Total=4692 [2023-02-14 23:09:07,041 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 3091 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 3094 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 3091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-14 23:09:07,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 28 Invalid, 3094 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 3091 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-14 23:09:07,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-14 23:09:07,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-14 23:09:07,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:09:07,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-14 23:09:07,042 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2023-02-14 23:09:07,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 23:09:07,042 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 23:09:07,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 2.029850746268657) internal successors, (136), 67 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 23:09:07,042 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-14 23:09:07,042 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-14 23:09:07,045 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-14 23:09:07,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-14 23:09:07,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 23:09:07,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-14 23:09:08,098 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-14 23:09:08,098 INFO L899 garLoopResultBuilder]: For program point L17-2(lines 17 23) no Hoare annotation was computed. [2023-02-14 23:09:08,098 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 26) no Hoare annotation was computed. [2023-02-14 23:09:08,098 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-14 23:09:08,098 INFO L899 garLoopResultBuilder]: For program point L7(lines 7 9) no Hoare annotation was computed. [2023-02-14 23:09:08,099 INFO L902 garLoopResultBuilder]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2023-02-14 23:09:08,099 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-14 23:09:08,099 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-14 23:09:08,099 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2023-02-14 23:09:08,099 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 22) no Hoare annotation was computed. [2023-02-14 23:09:08,099 INFO L895 garLoopResultBuilder]: At program point L18-2(lines 17 23) the Hoare annotation is: (let ((.cse0 (= (let ((.cse1 (div |ULTIMATE.start_main_~y~0#1| 2))) (+ (* (div (+ (* (- 2) .cse1) |ULTIMATE.start_main_~y~0#1|) 4294967296) 4294967296) (* 2 .cse1))) |ULTIMATE.start_main_~y~0#1|))) (or (and .cse0 (< (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 1)) (= |ULTIMATE.start_main_~x~0#1| 0) (and (< (mod (+ 4294967295 |ULTIMATE.start_main_~x~0#1|) 4294967296) 99) (not .cse0)))) [2023-02-14 23:09:08,099 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2023-02-14 23:09:08,102 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1] [2023-02-14 23:09:08,103 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 23:09:08,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 11:09:08 BoogieIcfgContainer [2023-02-14 23:09:08,141 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 23:09:08,142 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 23:09:08,142 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 23:09:08,142 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 23:09:08,142 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 11:08:42" (3/4) ... [2023-02-14 23:09:08,145 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-14 23:09:08,178 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2023-02-14 23:09:08,180 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-14 23:09:08,180 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-14 23:09:08,181 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-14 23:09:08,203 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 23:09:08,204 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 23:09:08,204 INFO L158 Benchmark]: Toolchain (without parser) took 26019.85ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 85.8MB in the beginning and 87.3MB in the end (delta: -1.6MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2023-02-14 23:09:08,205 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory was 69.8MB in the beginning and 69.7MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 23:09:08,205 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.61ms. Allocated memory is still 115.3MB. Free memory was 85.5MB in the beginning and 75.6MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 23:09:08,205 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.94ms. Allocated memory is still 115.3MB. Free memory was 75.6MB in the beginning and 74.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 23:09:08,205 INFO L158 Benchmark]: Boogie Preprocessor took 26.42ms. Allocated memory is still 115.3MB. Free memory was 74.0MB in the beginning and 73.0MB in the end (delta: 954.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 23:09:08,206 INFO L158 Benchmark]: RCFGBuilder took 215.55ms. Allocated memory is still 115.3MB. Free memory was 73.0MB in the beginning and 64.0MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-14 23:09:08,206 INFO L158 Benchmark]: TraceAbstraction took 25489.37ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 63.3MB in the beginning and 91.5MB in the end (delta: -28.3MB). Peak memory consumption was 54.8MB. Max. memory is 16.1GB. [2023-02-14 23:09:08,206 INFO L158 Benchmark]: Witness Printer took 62.26ms. Allocated memory is still 138.4MB. Free memory was 91.5MB in the beginning and 87.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-14 23:09:08,208 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 115.3MB. Free memory was 69.8MB in the beginning and 69.7MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.61ms. Allocated memory is still 115.3MB. Free memory was 85.5MB in the beginning and 75.6MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.94ms. Allocated memory is still 115.3MB. Free memory was 75.6MB in the beginning and 74.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.42ms. Allocated memory is still 115.3MB. Free memory was 74.0MB in the beginning and 73.0MB in the end (delta: 954.7kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 215.55ms. Allocated memory is still 115.3MB. Free memory was 73.0MB in the beginning and 64.0MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 25489.37ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 63.3MB in the beginning and 91.5MB in the end (delta: -28.3MB). Peak memory consumption was 54.8MB. Max. memory is 16.1GB. * Witness Printer took 62.26ms. Allocated memory is still 138.4MB. Free memory was 91.5MB in the beginning and 87.3MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 8]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 25.4s, OverallIterations: 11, TraceHistogramMax: 30, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 16.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 242 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 165 mSDsCounter, 108 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4084 IncrementalHoareTripleChecker+Invalid, 4192 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 108 mSolverCounterUnsat, 77 mSDtfsCounter, 4084 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 463 GetRequests, 271 SyntacticMatches, 4 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 968 ImplicationChecksByTransitivity, 16.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=6, InterpolantAutomatonStates: 131, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 136 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 47 NumberOfFragments, 60 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 5595 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 5.7s InterpolantComputationTime, 428 NumberOfCodeBlocks, 408 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 556 ConstructedInterpolants, 0 QuantifiedInterpolants, 3624 SizeOfPredicates, 14 NumberOfNonLiveVariables, 537 ConjunctsInSsa, 151 ConjunctsInUnsatCore, 24 InterpolantComputations, 5 PerfectInterpolantSequences, 1187/3976 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((-2 * (y / 2) + y) / 4294967296 * 4294967296 + 2 * (y / 2) == y && x % 2 % 4294967296 < 1) || x == 0) || ((4294967295 + x) % 4294967296 < 99 && !((-2 * (y / 2) + y) / 4294967296 * 4294967296 + 2 * (y / 2) == y)) - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-14 23:09:08,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE