./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursive/Primes.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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/recursive/Primes.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 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-18 04:20:29,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 04:20:29,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 04:20:29,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 04:20:29,615 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 04:20:29,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 04:20:29,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 04:20:29,621 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 04:20:29,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 04:20:29,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 04:20:29,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 04:20:29,630 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 04:20:29,630 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 04:20:29,632 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 04:20:29,633 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 04:20:29,634 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 04:20:29,635 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 04:20:29,636 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 04:20:29,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 04:20:29,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 04:20:29,641 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 04:20:29,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 04:20:29,643 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 04:20:29,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 04:20:29,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 04:20:29,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 04:20:29,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 04:20:29,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 04:20:29,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 04:20:29,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 04:20:29,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 04:20:29,652 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 04:20:29,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 04:20:29,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 04:20:29,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 04:20:29,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 04:20:29,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 04:20:29,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 04:20:29,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 04:20:29,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 04:20:29,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 04:20:29,658 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 04:20:29,684 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 04:20:29,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 04:20:29,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 04:20:29,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 04:20:29,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 04:20:29,689 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 04:20:29,689 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 04:20:29,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 04:20:29,689 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 04:20:29,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 04:20:29,690 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 04:20:29,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 04:20:29,691 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 04:20:29,691 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 04:20:29,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 04:20:29,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 04:20:29,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 04:20:29,691 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 04:20:29,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 04:20:29,692 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 04:20:29,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 04:20:29,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 04:20:29,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 04:20:29,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 04:20:29,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 04:20:29,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 04:20:29,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 04:20:29,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 04:20:29,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 04:20:29,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 04:20:29,694 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 04:20:29,694 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 04:20:29,694 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 04:20:29,694 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 04:20:29,694 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 04:20:29,694 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e [2023-02-18 04:20:29,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 04:20:29,857 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 04:20:29,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 04:20:29,860 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 04:20:29,860 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 04:20:29,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Primes.c [2023-02-18 04:20:30,868 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 04:20:31,009 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 04:20:31,010 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Primes.c [2023-02-18 04:20:31,014 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d97b313a9/d86255173edd4414af4dc23277c7a5a0/FLAG26e866cf5 [2023-02-18 04:20:31,024 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d97b313a9/d86255173edd4414af4dc23277c7a5a0 [2023-02-18 04:20:31,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 04:20:31,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 04:20:31,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 04:20:31,028 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 04:20:31,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 04:20:31,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:20:31" (1/1) ... [2023-02-18 04:20:31,032 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54ba2b82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:20:31, skipping insertion in model container [2023-02-18 04:20:31,032 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:20:31" (1/1) ... [2023-02-18 04:20:31,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 04:20:31,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 04:20:31,165 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/recursive/Primes.c[2190,2203] [2023-02-18 04:20:31,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 04:20:31,175 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 04:20:31,189 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/recursive/Primes.c[2190,2203] [2023-02-18 04:20:31,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 04:20:31,198 INFO L208 MainTranslator]: Completed translation [2023-02-18 04:20:31,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:20:31 WrapperNode [2023-02-18 04:20:31,199 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 04:20:31,200 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 04:20:31,200 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 04:20:31,200 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 04:20:31,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:20:31" (1/1) ... [2023-02-18 04:20:31,218 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:20:31" (1/1) ... [2023-02-18 04:20:31,234 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-02-18 04:20:31,234 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 04:20:31,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 04:20:31,235 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 04:20:31,235 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 04:20:31,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:20:31" (1/1) ... [2023-02-18 04:20:31,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:20:31" (1/1) ... [2023-02-18 04:20:31,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:20:31" (1/1) ... [2023-02-18 04:20:31,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:20:31" (1/1) ... [2023-02-18 04:20:31,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:20:31" (1/1) ... [2023-02-18 04:20:31,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:20:31" (1/1) ... [2023-02-18 04:20:31,255 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:20:31" (1/1) ... [2023-02-18 04:20:31,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:20:31" (1/1) ... [2023-02-18 04:20:31,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 04:20:31,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 04:20:31,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 04:20:31,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 04:20:31,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:20:31" (1/1) ... [2023-02-18 04:20:31,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 04:20:31,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:20:31,282 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-18 04:20:31,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-18 04:20:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure multiple_of [2023-02-18 04:20:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure multiple_of [2023-02-18 04:20:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 04:20:31,313 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2023-02-18 04:20:31,313 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2023-02-18 04:20:31,315 INFO L130 BoogieDeclarations]: Found specification of procedure is_prime_ [2023-02-18 04:20:31,315 INFO L138 BoogieDeclarations]: Found implementation of procedure is_prime_ [2023-02-18 04:20:31,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 04:20:31,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 04:20:31,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 04:20:31,370 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 04:20:31,373 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 04:20:31,573 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 04:20:31,585 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 04:20:31,585 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2023-02-18 04:20:31,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:20:31 BoogieIcfgContainer [2023-02-18 04:20:31,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 04:20:31,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 04:20:31,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 04:20:31,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 04:20:31,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 04:20:31" (1/3) ... [2023-02-18 04:20:31,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d7d9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:20:31, skipping insertion in model container [2023-02-18 04:20:31,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:20:31" (2/3) ... [2023-02-18 04:20:31,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d7d9b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:20:31, skipping insertion in model container [2023-02-18 04:20:31,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:20:31" (3/3) ... [2023-02-18 04:20:31,596 INFO L112 eAbstractionObserver]: Analyzing ICFG Primes.c [2023-02-18 04:20:31,610 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 04:20:31,611 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 04:20:31,657 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 04:20:31,662 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;@4fb1e7f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 04:20:31,662 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 04:20:31,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 52 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 39 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 04:20:31,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 04:20:31,671 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:20:31,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:31,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:20:31,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:20:31,675 INFO L85 PathProgramCache]: Analyzing trace with hash 691245353, now seen corresponding path program 1 times [2023-02-18 04:20:31,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:20:31,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411867627] [2023-02-18 04:20:31,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:31,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:20:31,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:31,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:31,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:20:31,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:20:31,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411867627] [2023-02-18 04:20:31,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411867627] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:20:31,834 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:20:31,834 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 04:20:31,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252593639] [2023-02-18 04:20:31,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:20:31,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 04:20:31,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:20:31,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 04:20:31,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 04:20:31,858 INFO L87 Difference]: Start difference. First operand has 52 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 39 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 04:20:31,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:20:31,915 INFO L93 Difference]: Finished difference Result 58 states and 80 transitions. [2023-02-18 04:20:31,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 04:20:31,918 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-18 04:20:31,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:20:31,923 INFO L225 Difference]: With dead ends: 58 [2023-02-18 04:20:31,923 INFO L226 Difference]: Without dead ends: 49 [2023-02-18 04:20:31,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 04:20:31,927 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:20:31,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 04:20:31,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-02-18 04:20:31,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-02-18 04:20:31,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-18 04:20:31,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 66 transitions. [2023-02-18 04:20:31,953 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 66 transitions. Word has length 15 [2023-02-18 04:20:31,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:20:31,954 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 66 transitions. [2023-02-18 04:20:31,954 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 04:20:31,955 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 66 transitions. [2023-02-18 04:20:31,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-18 04:20:31,956 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:20:31,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:31,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 04:20:31,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:20:31,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:20:31,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1873142352, now seen corresponding path program 1 times [2023-02-18 04:20:31,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:20:31,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449817266] [2023-02-18 04:20:31,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:31,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:20:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:32,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:32,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-18 04:20:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:20:32,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:20:32,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449817266] [2023-02-18 04:20:32,219 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449817266] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:20:32,219 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:20:32,219 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 04:20:32,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252820856] [2023-02-18 04:20:32,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:20:32,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 04:20:32,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:20:32,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 04:20:32,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-18 04:20:32,221 INFO L87 Difference]: Start difference. First operand 49 states and 66 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 04:20:32,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:20:32,285 INFO L93 Difference]: Finished difference Result 71 states and 93 transitions. [2023-02-18 04:20:32,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 04:20:32,285 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-02-18 04:20:32,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:20:32,288 INFO L225 Difference]: With dead ends: 71 [2023-02-18 04:20:32,289 INFO L226 Difference]: Without dead ends: 51 [2023-02-18 04:20:32,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-02-18 04:20:32,291 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 4 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:20:32,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 365 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 04:20:32,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-18 04:20:32,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-02-18 04:20:32,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 38 states have internal predecessors, (49), 9 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-02-18 04:20:32,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2023-02-18 04:20:32,301 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 22 [2023-02-18 04:20:32,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:20:32,302 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2023-02-18 04:20:32,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-18 04:20:32,303 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2023-02-18 04:20:32,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-18 04:20:32,305 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:20:32,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:32,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 04:20:32,306 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:20:32,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:20:32,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2039437329, now seen corresponding path program 1 times [2023-02-18 04:20:32,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:20:32,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467881862] [2023-02-18 04:20:32,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:32,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:20:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:32,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:32,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-18 04:20:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:20:32,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:20:32,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467881862] [2023-02-18 04:20:32,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467881862] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:20:32,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:20:32,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-18 04:20:32,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934291584] [2023-02-18 04:20:32,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:20:32,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-18 04:20:32,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:20:32,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-18 04:20:32,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-18 04:20:32,444 INFO L87 Difference]: Start difference. First operand 51 states and 68 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 04:20:32,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:20:32,472 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2023-02-18 04:20:32,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 04:20:32,473 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-02-18 04:20:32,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:20:32,474 INFO L225 Difference]: With dead ends: 57 [2023-02-18 04:20:32,474 INFO L226 Difference]: Without dead ends: 53 [2023-02-18 04:20:32,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 04:20:32,475 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 5 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:20:32,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 244 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 04:20:32,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-18 04:20:32,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-02-18 04:20:32,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 40 states have internal predecessors, (50), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-18 04:20:32,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions. [2023-02-18 04:20:32,481 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 71 transitions. Word has length 23 [2023-02-18 04:20:32,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:20:32,482 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 71 transitions. [2023-02-18 04:20:32,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 04:20:32,482 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 71 transitions. [2023-02-18 04:20:32,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-18 04:20:32,483 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:20:32,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:32,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-18 04:20:32,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:20:32,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:20:32,484 INFO L85 PathProgramCache]: Analyzing trace with hash -502167403, now seen corresponding path program 1 times [2023-02-18 04:20:32,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:20:32,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117309274] [2023-02-18 04:20:32,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:32,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:20:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:32,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:32,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-18 04:20:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 04:20:32,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:20:32,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117309274] [2023-02-18 04:20:32,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117309274] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:20:32,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:20:32,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 04:20:32,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846586102] [2023-02-18 04:20:32,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:20:32,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 04:20:32,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:20:32,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 04:20:32,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:20:32,530 INFO L87 Difference]: Start difference. First operand 53 states and 71 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 04:20:32,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:20:32,562 INFO L93 Difference]: Finished difference Result 59 states and 78 transitions. [2023-02-18 04:20:32,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 04:20:32,563 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2023-02-18 04:20:32,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:20:32,564 INFO L225 Difference]: With dead ends: 59 [2023-02-18 04:20:32,564 INFO L226 Difference]: Without dead ends: 55 [2023-02-18 04:20:32,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 04:20:32,565 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 9 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:20:32,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 209 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 04:20:32,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-02-18 04:20:32,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2023-02-18 04:20:32,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 38 states have (on average 1.3157894736842106) internal successors, (50), 40 states have internal predecessors, (50), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-02-18 04:20:32,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions. [2023-02-18 04:20:32,571 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 71 transitions. Word has length 24 [2023-02-18 04:20:32,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:20:32,571 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 71 transitions. [2023-02-18 04:20:32,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 04:20:32,571 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 71 transitions. [2023-02-18 04:20:32,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-02-18 04:20:32,572 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:20:32,572 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:32,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-18 04:20:32,573 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:20:32,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:20:32,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1717699423, now seen corresponding path program 1 times [2023-02-18 04:20:32,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:20:32,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80843789] [2023-02-18 04:20:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:32,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:20:32,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:32,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:32,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:32,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-18 04:20:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:32,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 04:20:32,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:32,658 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:20:32,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:20:32,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80843789] [2023-02-18 04:20:32,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80843789] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:20:32,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019859158] [2023-02-18 04:20:32,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:32,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:20:32,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:20:32,662 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 04:20:32,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 04:20:32,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:32,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-18 04:20:32,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:20:32,745 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-18 04:20:32,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:20:32,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:20:32,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019859158] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:20:32,804 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:20:32,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2023-02-18 04:20:32,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346898355] [2023-02-18 04:20:32,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:20:32,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-18 04:20:32,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:20:32,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-18 04:20:32,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-02-18 04:20:32,806 INFO L87 Difference]: Start difference. First operand 53 states and 71 transitions. Second operand has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-18 04:20:32,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:20:32,886 INFO L93 Difference]: Finished difference Result 68 states and 90 transitions. [2023-02-18 04:20:32,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 04:20:32,886 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 31 [2023-02-18 04:20:32,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:20:32,887 INFO L225 Difference]: With dead ends: 68 [2023-02-18 04:20:32,887 INFO L226 Difference]: Without dead ends: 51 [2023-02-18 04:20:32,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 58 SyntacticMatches, 5 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2023-02-18 04:20:32,888 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 26 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:20:32,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 373 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 04:20:32,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-18 04:20:32,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-02-18 04:20:32,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 39 states have internal predecessors, (47), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-02-18 04:20:32,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2023-02-18 04:20:32,893 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 31 [2023-02-18 04:20:32,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:20:32,893 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2023-02-18 04:20:32,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.727272727272727) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-18 04:20:32,894 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2023-02-18 04:20:32,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-02-18 04:20:32,895 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:20:32,895 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:32,902 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-18 04:20:33,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:20:33,100 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:20:33,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:20:33,100 INFO L85 PathProgramCache]: Analyzing trace with hash 380831863, now seen corresponding path program 1 times [2023-02-18 04:20:33,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:20:33,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55173603] [2023-02-18 04:20:33,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:33,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:20:33,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:33,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:33,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:33,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-18 04:20:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:33,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 04:20:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:33,275 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:20:33,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:20:33,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55173603] [2023-02-18 04:20:33,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55173603] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:20:33,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926791667] [2023-02-18 04:20:33,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:33,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:20:33,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:20:33,277 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 04:20:33,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 04:20:33,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:33,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2023-02-18 04:20:33,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:20:33,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:20:33,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:20:33,523 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 04:20:33,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926791667] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:20:33,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:20:33,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2023-02-18 04:20:33,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838008198] [2023-02-18 04:20:33,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:20:33,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-18 04:20:33,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:20:33,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-18 04:20:33,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2023-02-18 04:20:33,526 INFO L87 Difference]: Start difference. First operand 51 states and 65 transitions. Second operand has 22 states, 20 states have (on average 2.3) internal successors, (46), 16 states have internal predecessors, (46), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-02-18 04:20:33,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:20:33,693 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2023-02-18 04:20:33,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-18 04:20:33,694 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 2.3) internal successors, (46), 16 states have internal predecessors, (46), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) Word has length 32 [2023-02-18 04:20:33,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:20:33,695 INFO L225 Difference]: With dead ends: 71 [2023-02-18 04:20:33,695 INFO L226 Difference]: Without dead ends: 54 [2023-02-18 04:20:33,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 49 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2023-02-18 04:20:33,696 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 50 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:20:33,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 497 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 04:20:33,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-18 04:20:33,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2023-02-18 04:20:33,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 39 states have internal predecessors, (44), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-02-18 04:20:33,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2023-02-18 04:20:33,701 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 32 [2023-02-18 04:20:33,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:20:33,701 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2023-02-18 04:20:33,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 2.3) internal successors, (46), 16 states have internal predecessors, (46), 6 states have call successors, (6), 1 states have call predecessors, (6), 4 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2023-02-18 04:20:33,702 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2023-02-18 04:20:33,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-18 04:20:33,702 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:20:33,703 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:33,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 04:20:33,907 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,SelfDestructingSolverStorable5 [2023-02-18 04:20:33,908 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:20:33,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:20:33,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1826216781, now seen corresponding path program 1 times [2023-02-18 04:20:33,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:20:33,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622658428] [2023-02-18 04:20:33,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:33,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:20:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:33,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:33,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:33,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-02-18 04:20:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:33,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 04:20:33,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-18 04:20:33,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:20:33,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622658428] [2023-02-18 04:20:33,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622658428] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:20:33,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:20:33,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 04:20:33,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88244210] [2023-02-18 04:20:33,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:20:33,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 04:20:33,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:20:33,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 04:20:33,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-18 04:20:33,968 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 04:20:33,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:20:33,991 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2023-02-18 04:20:33,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 04:20:33,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2023-02-18 04:20:33,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:20:33,992 INFO L225 Difference]: With dead ends: 73 [2023-02-18 04:20:33,992 INFO L226 Difference]: Without dead ends: 53 [2023-02-18 04:20:33,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-18 04:20:33,993 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 26 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:20:33,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 220 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 04:20:33,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-02-18 04:20:33,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2023-02-18 04:20:33,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 39 states have internal predecessors, (44), 8 states have call successors, (8), 3 states have call predecessors, (8), 5 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-02-18 04:20:33,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2023-02-18 04:20:33,997 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 34 [2023-02-18 04:20:33,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:20:33,997 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2023-02-18 04:20:33,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-18 04:20:33,997 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2023-02-18 04:20:33,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-02-18 04:20:33,998 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:20:33,999 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:33,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-18 04:20:33,999 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:20:33,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:20:33,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1825803044, now seen corresponding path program 1 times [2023-02-18 04:20:33,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:20:33,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122250261] [2023-02-18 04:20:34,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:34,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:20:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 04:20:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-02-18 04:20:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-02-18 04:20:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 04:20:34,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-02-18 04:20:34,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:20:34,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122250261] [2023-02-18 04:20:34,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122250261] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:20:34,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:20:34,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 04:20:34,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775583152] [2023-02-18 04:20:34,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:20:34,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 04:20:34,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:20:34,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 04:20:34,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:20:34,039 INFO L87 Difference]: Start difference. First operand 51 states and 62 transitions. Second operand has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-18 04:20:34,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:20:34,066 INFO L93 Difference]: Finished difference Result 104 states and 131 transitions. [2023-02-18 04:20:34,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 04:20:34,066 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 52 [2023-02-18 04:20:34,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:20:34,067 INFO L225 Difference]: With dead ends: 104 [2023-02-18 04:20:34,067 INFO L226 Difference]: Without dead ends: 51 [2023-02-18 04:20:34,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-18 04:20:34,068 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 21 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:20:34,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 169 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 04:20:34,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-18 04:20:34,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2023-02-18 04:20:34,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.1388888888888888) internal successors, (41), 38 states have internal predecessors, (41), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2023-02-18 04:20:34,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2023-02-18 04:20:34,071 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 52 [2023-02-18 04:20:34,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:20:34,072 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2023-02-18 04:20:34,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-18 04:20:34,072 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2023-02-18 04:20:34,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-02-18 04:20:34,073 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:20:34,073 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:34,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-18 04:20:34,073 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:20:34,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:20:34,073 INFO L85 PathProgramCache]: Analyzing trace with hash 654757234, now seen corresponding path program 1 times [2023-02-18 04:20:34,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:20:34,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211440070] [2023-02-18 04:20:34,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:34,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:20:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 04:20:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-02-18 04:20:34,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-02-18 04:20:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 04:20:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,114 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 04:20:34,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:20:34,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211440070] [2023-02-18 04:20:34,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211440070] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:20:34,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346840475] [2023-02-18 04:20:34,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:34,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:20:34,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:20:34,116 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 04:20:34,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 04:20:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 04:20:34,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:20:34,165 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 04:20:34,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 04:20:34,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346840475] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:20:34,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 04:20:34,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-02-18 04:20:34,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008264199] [2023-02-18 04:20:34,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:20:34,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 04:20:34,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:20:34,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 04:20:34,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-02-18 04:20:34,167 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-18 04:20:34,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:20:34,190 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2023-02-18 04:20:34,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 04:20:34,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2023-02-18 04:20:34,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:20:34,191 INFO L225 Difference]: With dead ends: 96 [2023-02-18 04:20:34,191 INFO L226 Difference]: Without dead ends: 51 [2023-02-18 04:20:34,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-18 04:20:34,192 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 14 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:20:34,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 149 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 04:20:34,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-18 04:20:34,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-02-18 04:20:34,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.135135135135135) internal successors, (42), 40 states have internal predecessors, (42), 7 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (11), 7 states have call predecessors, (11), 7 states have call successors, (11) [2023-02-18 04:20:34,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2023-02-18 04:20:34,196 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 53 [2023-02-18 04:20:34,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:20:34,196 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2023-02-18 04:20:34,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2023-02-18 04:20:34,196 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2023-02-18 04:20:34,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-02-18 04:20:34,197 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:20:34,197 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:34,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-18 04:20:34,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:20:34,402 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:20:34,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:20:34,403 INFO L85 PathProgramCache]: Analyzing trace with hash 689204116, now seen corresponding path program 1 times [2023-02-18 04:20:34,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:20:34,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373047030] [2023-02-18 04:20:34,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:34,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:20:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 04:20:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 04:20:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-02-18 04:20:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-02-18 04:20:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 04:20:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 04:20:34,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:20:34,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373047030] [2023-02-18 04:20:34,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373047030] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:20:34,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426401612] [2023-02-18 04:20:34,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:34,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:20:34,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:20:34,550 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 04:20:34,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 04:20:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:34,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 04:20:34,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:20:34,674 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 04:20:34,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:20:34,748 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-02-18 04:20:34,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426401612] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:20:34,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:20:34,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 18 [2023-02-18 04:20:34,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849581836] [2023-02-18 04:20:34,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:20:34,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-18 04:20:34,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:20:34,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-18 04:20:34,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2023-02-18 04:20:34,750 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 10 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 5 states have call predecessors, (14), 10 states have call successors, (14) [2023-02-18 04:20:34,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:20:34,909 INFO L93 Difference]: Finished difference Result 90 states and 112 transitions. [2023-02-18 04:20:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-18 04:20:34,909 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 10 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 5 states have call predecessors, (14), 10 states have call successors, (14) Word has length 62 [2023-02-18 04:20:34,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:20:34,910 INFO L225 Difference]: With dead ends: 90 [2023-02-18 04:20:34,910 INFO L226 Difference]: Without dead ends: 59 [2023-02-18 04:20:34,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 122 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2023-02-18 04:20:34,911 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 71 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:20:34,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 335 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 04:20:34,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-18 04:20:34,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2023-02-18 04:20:34,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 42 states have internal predecessors, (44), 7 states have call successors, (7), 3 states have call predecessors, (7), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2023-02-18 04:20:34,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2023-02-18 04:20:34,915 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 62 [2023-02-18 04:20:34,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:20:34,915 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2023-02-18 04:20:34,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 18 states have internal predecessors, (92), 10 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 5 states have call predecessors, (14), 10 states have call successors, (14) [2023-02-18 04:20:34,916 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2023-02-18 04:20:34,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-18 04:20:34,916 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:20:34,916 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:34,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 04:20:35,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:20:35,121 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:20:35,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:20:35,122 INFO L85 PathProgramCache]: Analyzing trace with hash -729550012, now seen corresponding path program 2 times [2023-02-18 04:20:35,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:20:35,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27049545] [2023-02-18 04:20:35,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:35,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:20:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:35,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:35,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:35,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 04:20:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:35,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 04:20:35,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:35,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 04:20:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:35,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-02-18 04:20:35,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:35,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-02-18 04:20:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:35,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 04:20:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:35,404 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 04:20:35,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:20:35,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27049545] [2023-02-18 04:20:35,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27049545] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:20:35,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032265204] [2023-02-18 04:20:35,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 04:20:35,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:20:35,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:20:35,425 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 04:20:35,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 04:20:35,545 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 04:20:35,545 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:20:35,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 04:20:35,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:20:35,591 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-18 04:20:35,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:20:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-18 04:20:35,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032265204] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 04:20:35,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 04:20:35,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 22 [2023-02-18 04:20:35,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328242911] [2023-02-18 04:20:35,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 04:20:35,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-18 04:20:35,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:20:35,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-18 04:20:35,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2023-02-18 04:20:35,706 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand has 22 states, 19 states have (on average 4.947368421052632) internal successors, (94), 22 states have internal predecessors, (94), 12 states have call successors, (15), 2 states have call predecessors, (15), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) [2023-02-18 04:20:35,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:20:35,955 INFO L93 Difference]: Finished difference Result 150 states and 199 transitions. [2023-02-18 04:20:35,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-18 04:20:35,955 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 4.947368421052632) internal successors, (94), 22 states have internal predecessors, (94), 12 states have call successors, (15), 2 states have call predecessors, (15), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) Word has length 71 [2023-02-18 04:20:35,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:20:35,956 INFO L225 Difference]: With dead ends: 150 [2023-02-18 04:20:35,957 INFO L226 Difference]: Without dead ends: 95 [2023-02-18 04:20:35,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 135 SyntacticMatches, 9 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2023-02-18 04:20:35,958 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 92 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-18 04:20:35,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 335 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-18 04:20:35,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2023-02-18 04:20:35,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2023-02-18 04:20:35,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 71 states have internal predecessors, (74), 11 states have call successors, (11), 7 states have call predecessors, (11), 12 states have return successors, (32), 12 states have call predecessors, (32), 11 states have call successors, (32) [2023-02-18 04:20:35,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 117 transitions. [2023-02-18 04:20:35,964 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 117 transitions. Word has length 71 [2023-02-18 04:20:35,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:20:35,964 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 117 transitions. [2023-02-18 04:20:35,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 4.947368421052632) internal successors, (94), 22 states have internal predecessors, (94), 12 states have call successors, (15), 2 states have call predecessors, (15), 7 states have return successors, (18), 7 states have call predecessors, (18), 12 states have call successors, (18) [2023-02-18 04:20:35,964 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 117 transitions. [2023-02-18 04:20:35,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-02-18 04:20:35,965 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:20:35,965 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:35,985 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-02-18 04:20:36,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-18 04:20:36,170 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:20:36,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:20:36,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1100264158, now seen corresponding path program 1 times [2023-02-18 04:20:36,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:20:36,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39989749] [2023-02-18 04:20:36,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:36,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:20:36,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:36,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 04:20:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 04:20:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 04:20:36,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-02-18 04:20:36,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-02-18 04:20:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 04:20:36,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-02-18 04:20:36,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:20:36,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39989749] [2023-02-18 04:20:36,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39989749] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 04:20:36,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 04:20:36,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-18 04:20:36,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178592135] [2023-02-18 04:20:36,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 04:20:36,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 04:20:36,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:20:36,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 04:20:36,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-18 04:20:36,250 INFO L87 Difference]: Start difference. First operand 91 states and 117 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-18 04:20:36,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:20:36,271 INFO L93 Difference]: Finished difference Result 178 states and 250 transitions. [2023-02-18 04:20:36,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 04:20:36,271 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 78 [2023-02-18 04:20:36,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:20:36,272 INFO L225 Difference]: With dead ends: 178 [2023-02-18 04:20:36,272 INFO L226 Difference]: Without dead ends: 91 [2023-02-18 04:20:36,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-18 04:20:36,273 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 10 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 04:20:36,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 167 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 04:20:36,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-02-18 04:20:36,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-02-18 04:20:36,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 71 states have internal predecessors, (74), 11 states have call successors, (11), 7 states have call predecessors, (11), 12 states have return successors, (30), 12 states have call predecessors, (30), 11 states have call successors, (30) [2023-02-18 04:20:36,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 115 transitions. [2023-02-18 04:20:36,278 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 115 transitions. Word has length 78 [2023-02-18 04:20:36,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:20:36,278 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 115 transitions. [2023-02-18 04:20:36,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 5 states have internal predecessors, (44), 3 states have call successors, (7), 1 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-02-18 04:20:36,278 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 115 transitions. [2023-02-18 04:20:36,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-02-18 04:20:36,279 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 04:20:36,279 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:36,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-18 04:20:36,280 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 04:20:36,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 04:20:36,280 INFO L85 PathProgramCache]: Analyzing trace with hash -862294776, now seen corresponding path program 2 times [2023-02-18 04:20:36,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 04:20:36,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783627356] [2023-02-18 04:20:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 04:20:36,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 04:20:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 04:20:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 04:20:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 04:20:36,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-02-18 04:20:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-02-18 04:20:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-02-18 04:20:36,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2023-02-18 04:20:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-02-18 04:20:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 04:20:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-18 04:20:36,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 04:20:36,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783627356] [2023-02-18 04:20:36,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783627356] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:20:36,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629928986] [2023-02-18 04:20:36,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 04:20:36,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:20:36,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 04:20:36,529 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 04:20:36,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 04:20:36,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 04:20:36,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 04:20:36,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-18 04:20:36,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 04:20:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-02-18 04:20:36,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 04:20:36,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629928986] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 04:20:36,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 04:20:36,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 19 [2023-02-18 04:20:36,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85707266] [2023-02-18 04:20:36,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 04:20:36,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-18 04:20:36,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 04:20:36,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-18 04:20:36,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-02-18 04:20:36,832 INFO L87 Difference]: Start difference. First operand 91 states and 115 transitions. Second operand has 19 states, 18 states have (on average 5.444444444444445) internal successors, (98), 19 states have internal predecessors, (98), 10 states have call successors, (17), 2 states have call predecessors, (17), 8 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2023-02-18 04:20:36,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 04:20:36,977 INFO L93 Difference]: Finished difference Result 152 states and 206 transitions. [2023-02-18 04:20:36,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 04:20:36,978 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.444444444444445) internal successors, (98), 19 states have internal predecessors, (98), 10 states have call successors, (17), 2 states have call predecessors, (17), 8 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) Word has length 87 [2023-02-18 04:20:36,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 04:20:36,978 INFO L225 Difference]: With dead ends: 152 [2023-02-18 04:20:36,978 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 04:20:36,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 133 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2023-02-18 04:20:36,980 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 71 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 04:20:36,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 175 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 04:20:36,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 04:20:36,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 04:20:36,981 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) [2023-02-18 04:20:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 04:20:36,981 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2023-02-18 04:20:36,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 04:20:36,982 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 04:20:36,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.444444444444445) internal successors, (98), 19 states have internal predecessors, (98), 10 states have call successors, (17), 2 states have call predecessors, (17), 8 states have return successors, (18), 7 states have call predecessors, (18), 10 states have call successors, (18) [2023-02-18 04:20:36,982 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 04:20:36,982 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 04:20:36,984 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 04:20:37,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 04:20:37,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 04:20:37,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 04:20:37,202 INFO L895 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (let ((.cse3 (= |multiple_of_#in~m| multiple_of_~m)) (.cse4 (<= |multiple_of_#in~m| 0))) (let ((.cse2 (not (<= |multiple_of_#in~m| |multiple_of_#in~n|))) (.cse0 (not (<= 0 |multiple_of_#in~n|))) (.cse1 (and .cse3 .cse4))) (and (or .cse0 .cse1) (or .cse2 .cse0 .cse1) .cse3 .cse4 (or .cse2 .cse0 (not (<= (* (- 1) |multiple_of_#in~n|) (* (- 2) |multiple_of_#in~m|))) .cse1)))) [2023-02-18 04:20:37,202 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 34) no Hoare annotation was computed. [2023-02-18 04:20:37,202 INFO L899 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2023-02-18 04:20:37,203 INFO L899 garLoopResultBuilder]: For program point multiple_ofFINAL(lines 31 45) no Hoare annotation was computed. [2023-02-18 04:20:37,203 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (let ((.cse7 (<= |multiple_of_#in~m| |multiple_of_#in~n|))) (let ((.cse6 (not .cse7)) (.cse3 (not (<= 0 |multiple_of_#in~n|))) (.cse0 (>= multiple_of_~n |multiple_of_#in~n|)) (.cse1 (= |multiple_of_#in~m| multiple_of_~m)) (.cse2 (= |multiple_of_#in~n| multiple_of_~n)) (.cse4 (<= 0 multiple_of_~n)) (.cse5 (not (<= multiple_of_~n 0)))) (and .cse0 .cse1 .cse2 (or .cse3 (and .cse0 .cse1 .cse2 .cse4 .cse5)) .cse4 (or .cse6 .cse3 (and .cse0 .cse1 .cse2 .cse7 .cse4 .cse5)) (let ((.cse8 (<= (* (- 1) |multiple_of_#in~n|) (* (- 2) |multiple_of_#in~m|)))) (or .cse6 .cse3 (and .cse0 .cse1 .cse8 .cse2 .cse7 .cse4 .cse5) (not .cse8))) .cse5))) [2023-02-18 04:20:37,203 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2023-02-18 04:20:37,203 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 31 45) the Hoare annotation is: true [2023-02-18 04:20:37,203 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 43) no Hoare annotation was computed. [2023-02-18 04:20:37,203 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 40) no Hoare annotation was computed. [2023-02-18 04:20:37,204 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (<= |multiple_of_#in~n| 0)) (.cse4 (>= multiple_of_~n |multiple_of_#in~n|)) (.cse5 (= |multiple_of_#in~m| multiple_of_~m)) (.cse6 (<= multiple_of_~n (- 1))) (.cse7 (= |multiple_of_#in~n| multiple_of_~n))) (let ((.cse3 (and .cse0 .cse4 .cse5 .cse6 .cse7)) (.cse8 (and .cse0 .cse4 .cse5)) (.cse1 (not (<= |multiple_of_#in~m| |multiple_of_#in~n|))) (.cse2 (not (<= 0 |multiple_of_#in~n|))) (.cse9 (and .cse0 .cse4 .cse5 .cse7))) (and .cse0 (or .cse1 .cse2) (or .cse3 .cse2) .cse4 .cse5 .cse2 .cse6 .cse7 (or .cse8 .cse3 .cse9) (or .cse8 .cse1 .cse2 (not (<= (* (- 1) |multiple_of_#in~n|) (* (- 2) |multiple_of_#in~m|))) .cse9)))) [2023-02-18 04:20:37,204 INFO L899 garLoopResultBuilder]: For program point multiple_ofEXIT(lines 31 45) no Hoare annotation was computed. [2023-02-18 04:20:37,204 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 37) no Hoare annotation was computed. [2023-02-18 04:20:37,204 INFO L899 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2023-02-18 04:20:37,204 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (= |mult_#in~n| mult_~n) (not (<= (+ (- 1) mult_~m) 0)) (= |mult_#in~m| mult_~m) (not (<= mult_~m 0))) [2023-02-18 04:20:37,204 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2023-02-18 04:20:37,204 INFO L899 garLoopResultBuilder]: For program point L24(lines 24 26) no Hoare annotation was computed. [2023-02-18 04:20:37,204 INFO L899 garLoopResultBuilder]: For program point L21(lines 21 23) no Hoare annotation was computed. [2023-02-18 04:20:37,204 INFO L895 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (let ((.cse0 (<= 0 (+ (* (- 1) |mult_#in~m|) 1))) (.cse1 (= |mult_#in~m| mult_~m)) (.cse2 (<= |mult_#in~m| 0))) (and (or (and .cse0 .cse1 .cse2) (and .cse0 .cse1)) .cse0 .cse1 .cse2)) [2023-02-18 04:20:37,205 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2023-02-18 04:20:37,205 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2023-02-18 04:20:37,205 INFO L899 garLoopResultBuilder]: For program point multFINAL(lines 17 28) no Hoare annotation was computed. [2023-02-18 04:20:37,205 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 17 28) the Hoare annotation is: true [2023-02-18 04:20:37,205 INFO L899 garLoopResultBuilder]: For program point multEXIT(lines 17 28) no Hoare annotation was computed. [2023-02-18 04:20:37,205 INFO L899 garLoopResultBuilder]: For program point L97(line 97) no Hoare annotation was computed. [2023-02-18 04:20:37,205 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 04:20:37,205 INFO L895 garLoopResultBuilder]: At program point L97-1(line 97) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~n~0#1| 2) (<= 0 (+ (- 1) |ULTIMATE.start_main_~n~0#1|)) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_is_prime_~n#1|)) [2023-02-18 04:20:37,205 INFO L899 garLoopResultBuilder]: For program point L97-2(line 97) no Hoare annotation was computed. [2023-02-18 04:20:37,205 INFO L899 garLoopResultBuilder]: For program point L97-4(lines 97 101) no Hoare annotation was computed. [2023-02-18 04:20:37,206 INFO L902 garLoopResultBuilder]: At program point L97-5(lines 76 102) the Hoare annotation is: true [2023-02-18 04:20:37,206 INFO L899 garLoopResultBuilder]: For program point L91(lines 91 95) no Hoare annotation was computed. [2023-02-18 04:20:37,206 INFO L895 garLoopResultBuilder]: At program point is_prime_returnLabel#1(lines 52 54) the Hoare annotation is: (or (= |ULTIMATE.start_is_prime_#res#1| 0) (and (<= |ULTIMATE.start_main_~n~0#1| 2) (<= 0 (+ (- 1) |ULTIMATE.start_main_~n~0#1|)) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_is_prime_~n#1|))) [2023-02-18 04:20:37,206 INFO L899 garLoopResultBuilder]: For program point L85(lines 85 89) no Hoare annotation was computed. [2023-02-18 04:20:37,206 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 04:20:37,206 INFO L899 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2023-02-18 04:20:37,206 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 04:20:37,206 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 04:20:37,206 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 98) no Hoare annotation was computed. [2023-02-18 04:20:37,207 INFO L895 garLoopResultBuilder]: At program point L53(line 53) the Hoare annotation is: (and (<= 0 (+ (- 1) |ULTIMATE.start_main_~n~0#1|)) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_is_prime_~n#1|)) [2023-02-18 04:20:37,207 INFO L899 garLoopResultBuilder]: For program point L53-1(line 53) no Hoare annotation was computed. [2023-02-18 04:20:37,207 INFO L899 garLoopResultBuilder]: For program point L78(lines 78 82) no Hoare annotation was computed. [2023-02-18 04:20:37,207 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 72) no Hoare annotation was computed. [2023-02-18 04:20:37,207 INFO L899 garLoopResultBuilder]: For program point is_prime_EXIT(lines 57 74) no Hoare annotation was computed. [2023-02-18 04:20:37,207 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 73) no Hoare annotation was computed. [2023-02-18 04:20:37,208 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 63) no Hoare annotation was computed. [2023-02-18 04:20:37,208 INFO L899 garLoopResultBuilder]: For program point is_prime_FINAL(lines 57 74) no Hoare annotation was computed. [2023-02-18 04:20:37,208 INFO L899 garLoopResultBuilder]: For program point L58(lines 58 60) no Hoare annotation was computed. [2023-02-18 04:20:37,209 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 57 74) the Hoare annotation is: true [2023-02-18 04:20:37,209 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse11 (+ (- 2) is_prime__~n))) (let ((.cse9 (<= 4 |is_prime__#in~n|)) (.cse8 (<= (* 2 |is_prime__#in~m|) |is_prime__#in~n|)) (.cse1 (not (<= .cse11 0))) (.cse2 (= |is_prime__#in~n| is_prime__~n)) (.cse3 (= |is_prime__#in~m| is_prime__~m)) (.cse4 (>= |is_prime__#in~m| is_prime__~m)) (.cse5 (> is_prime__~n 2)) (.cse6 (<= 0 (+ (- 2) is_prime__~m))) (.cse7 (<= |is_prime__#in~n| is_prime__~n))) (let ((.cse0 (and .cse1 .cse2 .cse3 .cse4 .cse5 (<= is_prime__~n is_prime__~m) .cse6 (<= |is_prime__#in~n| |is_prime__#in~m|) .cse7)) (.cse10 (and .cse9 .cse1 .cse8 .cse2 (<= is_prime__~m .cse11) .cse3 .cse4 .cse5 .cse6 .cse7))) (and (or .cse0 (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7)) (or .cse0 (not .cse8) (not .cse9) .cse10) (or .cse0 .cse10))))) [2023-02-18 04:20:37,209 INFO L899 garLoopResultBuilder]: For program point L71-1(line 71) no Hoare annotation was computed. [2023-02-18 04:20:37,209 INFO L895 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: (let ((.cse7 (+ (- 2) is_prime__~n))) (let ((.cse0 (not (<= .cse7 0))) (.cse1 (= |is_prime__#in~n| is_prime__~n)) (.cse2 (= |is_prime__#in~m| is_prime__~m)) (.cse3 (>= |is_prime__#in~m| is_prime__~m)) (.cse4 (> is_prime__~n 2)) (.cse8 (<= 0 (+ (- 2) is_prime__~m))) (.cse9 (<= |is_prime__#in~n| is_prime__~n))) (and .cse0 .cse1 .cse2 .cse3 .cse4 (let ((.cse6 (<= 4 |is_prime__#in~n|)) (.cse5 (<= (* 2 |is_prime__#in~m|) |is_prime__#in~n|))) (or (not .cse5) (not .cse6) (and .cse6 .cse0 .cse5 .cse1 (<= is_prime__~m .cse7) .cse2 .cse3 .cse4 .cse8 .cse9))) .cse8 .cse9))) [2023-02-18 04:20:37,210 INFO L899 garLoopResultBuilder]: For program point L68-1(line 68) no Hoare annotation was computed. [2023-02-18 04:20:37,210 INFO L899 garLoopResultBuilder]: For program point L68-2(lines 68 70) no Hoare annotation was computed. [2023-02-18 04:20:37,219 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 04:20:37,238 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 04:20:37,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 04:20:37 BoogieIcfgContainer [2023-02-18 04:20:37,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 04:20:37,252 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 04:20:37,252 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 04:20:37,252 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 04:20:37,253 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:20:31" (3/4) ... [2023-02-18 04:20:37,255 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 04:20:37,259 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure multiple_of [2023-02-18 04:20:37,259 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure mult [2023-02-18 04:20:37,259 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure is_prime_ [2023-02-18 04:20:37,264 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-02-18 04:20:37,265 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-02-18 04:20:37,265 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-18 04:20:37,265 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 04:20:37,281 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \result == 0 || ((n <= 2 && 0 <= -1 + n) && n <= n) [2023-02-18 04:20:37,306 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 04:20:37,307 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 04:20:37,307 INFO L158 Benchmark]: Toolchain (without parser) took 6279.90ms. Allocated memory was 192.9MB in the beginning and 281.0MB in the end (delta: 88.1MB). Free memory was 156.5MB in the beginning and 245.9MB in the end (delta: -89.5MB). Peak memory consumption was 281.0kB. Max. memory is 16.1GB. [2023-02-18 04:20:37,307 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 134.2MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 04:20:37,307 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.17ms. Allocated memory is still 192.9MB. Free memory was 155.8MB in the beginning and 145.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 04:20:37,307 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.33ms. Allocated memory is still 192.9MB. Free memory was 145.3MB in the beginning and 143.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 04:20:37,308 INFO L158 Benchmark]: Boogie Preprocessor took 22.67ms. Allocated memory is still 192.9MB. Free memory was 143.8MB in the beginning and 142.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 04:20:37,308 INFO L158 Benchmark]: RCFGBuilder took 328.72ms. Allocated memory is still 192.9MB. Free memory was 142.5MB in the beginning and 130.0MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-18 04:20:37,308 INFO L158 Benchmark]: TraceAbstraction took 5663.80ms. Allocated memory was 192.9MB in the beginning and 281.0MB in the end (delta: 88.1MB). Free memory was 129.2MB in the beginning and 250.2MB in the end (delta: -120.9MB). Peak memory consumption was 100.9MB. Max. memory is 16.1GB. [2023-02-18 04:20:37,308 INFO L158 Benchmark]: Witness Printer took 54.39ms. Allocated memory is still 281.0MB. Free memory was 250.2MB in the beginning and 245.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-18 04:20:37,309 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 134.2MB. Free memory is still 79.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 171.17ms. Allocated memory is still 192.9MB. Free memory was 155.8MB in the beginning and 145.3MB in the end (delta: 10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.33ms. Allocated memory is still 192.9MB. Free memory was 145.3MB in the beginning and 143.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.67ms. Allocated memory is still 192.9MB. Free memory was 143.8MB in the beginning and 142.5MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 328.72ms. Allocated memory is still 192.9MB. Free memory was 142.5MB in the beginning and 130.0MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5663.80ms. Allocated memory was 192.9MB in the beginning and 281.0MB in the end (delta: 88.1MB). Free memory was 129.2MB in the beginning and 250.2MB in the end (delta: -120.9MB). Peak memory consumption was 100.9MB. Max. memory is 16.1GB. * Witness Printer took 54.39ms. Allocated memory is still 281.0MB. Free memory was 250.2MB in the beginning and 245.9MB 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: 98]: 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 4 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.6s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 436 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 399 mSDsluCounter, 3376 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2711 mSDsCounter, 206 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1352 IncrementalHoareTripleChecker+Invalid, 1558 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 206 mSolverCounterUnsat, 665 mSDtfsCounter, 1352 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 814 GetRequests, 620 SyntacticMatches, 32 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=11, InterpolantAutomatonStates: 106, 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, 13 MinimizatonAttempts, 18 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 207 PreInvPairs, 247 NumberOfFragments, 697 HoareAnnotationTreeSize, 207 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 920 NumberOfCodeBlocks, 920 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1093 ConstructedInterpolants, 0 QuantifiedInterpolants, 2969 SizeOfPredicates, 40 NumberOfNonLiveVariables, 1038 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 23 InterpolantComputations, 8 PerfectInterpolantSequences, 268/459 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: 52]: Loop Invariant Derived loop invariant: \result == 0 || ((n <= 2 && 0 <= -1 + n) && n <= n) - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-02-18 04:20:37,326 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