./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 35987657 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-?-3598765 [2022-07-21 05:03:13,076 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:03:13,078 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:03:13,107 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:03:13,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:03:13,109 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:03:13,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:03:13,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:03:13,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:03:13,130 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:03:13,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:03:13,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:03:13,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:03:13,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:03:13,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:03:13,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:03:13,142 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:03:13,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:03:13,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:03:13,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:03:13,152 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:03:13,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:03:13,155 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:03:13,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:03:13,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:03:13,163 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:03:13,166 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:03:13,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:03:13,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:03:13,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:03:13,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:03:13,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:03:13,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:03:13,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:03:13,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:03:13,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:03:13,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:03:13,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:03:13,175 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:03:13,175 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:03:13,176 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:03:13,177 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:03:13,182 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:03:13,214 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:03:13,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:03:13,215 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:03:13,216 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:03:13,216 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:03:13,217 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:03:13,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:03:13,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:03:13,218 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:03:13,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:03:13,219 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:03:13,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:03:13,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:03:13,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:03:13,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:03:13,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:03:13,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:03:13,220 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:03:13,220 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:03:13,221 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:03:13,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:03:13,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:03:13,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:03:13,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:03:13,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:03:13,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:03:13,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:03:13,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:03:13,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:03:13,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:03:13,223 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:03:13,223 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:03:13,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:03:13,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 16beca065b3aeb336c54dcf96f3abbe61553e7d28b28c1a40f525ad89a5da56e [2022-07-21 05:03:13,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:03:13,550 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:03:13,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:03:13,555 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:03:13,556 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:03:13,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/Primes.c [2022-07-21 05:03:13,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bcce443e/30110b49547f4801af4a94f8936b935f/FLAG637749a2c [2022-07-21 05:03:14,091 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:03:14,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursive/Primes.c [2022-07-21 05:03:14,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bcce443e/30110b49547f4801af4a94f8936b935f/FLAG637749a2c [2022-07-21 05:03:14,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bcce443e/30110b49547f4801af4a94f8936b935f [2022-07-21 05:03:14,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:03:14,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:03:14,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:03:14,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:03:14,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:03:14,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:03:14" (1/1) ... [2022-07-21 05:03:14,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4badb12a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:14, skipping insertion in model container [2022-07-21 05:03:14,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:03:14" (1/1) ... [2022-07-21 05:03:14,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:03:14,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:03:14,744 WARN L230 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] [2022-07-21 05:03:14,747 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:03:14,754 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:03:14,771 WARN L230 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] [2022-07-21 05:03:14,772 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:03:14,787 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:03:14,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:14 WrapperNode [2022-07-21 05:03:14,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:03:14,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:03:14,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:03:14,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:03:14,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:14" (1/1) ... [2022-07-21 05:03:14,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:14" (1/1) ... [2022-07-21 05:03:14,834 INFO L137 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-07-21 05:03:14,835 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:03:14,836 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:03:14,836 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:03:14,836 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:03:14,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:14" (1/1) ... [2022-07-21 05:03:14,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:14" (1/1) ... [2022-07-21 05:03:14,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:14" (1/1) ... [2022-07-21 05:03:14,849 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:14" (1/1) ... [2022-07-21 05:03:14,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:14" (1/1) ... [2022-07-21 05:03:14,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:14" (1/1) ... [2022-07-21 05:03:14,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:14" (1/1) ... [2022-07-21 05:03:14,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:03:14,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:03:14,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:03:14,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:03:14,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:14" (1/1) ... [2022-07-21 05:03:14,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:03:14,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:14,914 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) [2022-07-21 05:03:14,956 INFO L130 BoogieDeclarations]: Found specification of procedure multiple_of [2022-07-21 05:03:14,956 INFO L138 BoogieDeclarations]: Found implementation of procedure multiple_of [2022-07-21 05:03:14,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:03:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2022-07-21 05:03:14,957 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2022-07-21 05:03:14,957 INFO L130 BoogieDeclarations]: Found specification of procedure is_prime_ [2022-07-21 05:03:14,957 INFO L138 BoogieDeclarations]: Found implementation of procedure is_prime_ [2022-07-21 05:03:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:03:14,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:03:14,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:03:14,951 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 [2022-07-21 05:03:15,027 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:03:15,029 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:03:15,248 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:03:15,254 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:03:15,258 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 05:03:15,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:03:15 BoogieIcfgContainer [2022-07-21 05:03:15,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:03:15,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:03:15,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:03:15,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:03:15,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:03:14" (1/3) ... [2022-07-21 05:03:15,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1225fd22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:03:15, skipping insertion in model container [2022-07-21 05:03:15,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:03:14" (2/3) ... [2022-07-21 05:03:15,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1225fd22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:03:15, skipping insertion in model container [2022-07-21 05:03:15,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:03:15" (3/3) ... [2022-07-21 05:03:15,269 INFO L111 eAbstractionObserver]: Analyzing ICFG Primes.c [2022-07-21 05:03:15,296 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:03:15,296 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:03:15,362 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:03:15,372 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b06551c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@42058a62 [2022-07-21 05:03:15,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:03:15,376 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) [2022-07-21 05:03:15,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-21 05:03:15,396 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:15,396 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:15,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:15,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:15,403 INFO L85 PathProgramCache]: Analyzing trace with hash 691245353, now seen corresponding path program 1 times [2022-07-21 05:03:15,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:15,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058530747] [2022-07-21 05:03:15,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:15,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:03:15,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:15,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058530747] [2022-07-21 05:03:15,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058530747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:03:15,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:03:15,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:03:15,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399739347] [2022-07-21 05:03:15,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:03:15,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:03:15,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:15,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:03:15,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:03:15,684 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) [2022-07-21 05:03:15,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:15,748 INFO L93 Difference]: Finished difference Result 58 states and 80 transitions. [2022-07-21 05:03:15,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:03:15,752 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 [2022-07-21 05:03:15,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:15,770 INFO L225 Difference]: With dead ends: 58 [2022-07-21 05:03:15,770 INFO L226 Difference]: Without dead ends: 49 [2022-07-21 05:03:15,773 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 [2022-07-21 05:03:15,776 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 [2022-07-21 05:03:15,777 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] [2022-07-21 05:03:15,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-07-21 05:03:15,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-07-21 05:03:15,813 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) [2022-07-21 05:03:15,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 66 transitions. [2022-07-21 05:03:15,816 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 66 transitions. Word has length 15 [2022-07-21 05:03:15,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:15,817 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 66 transitions. [2022-07-21 05:03:15,817 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) [2022-07-21 05:03:15,817 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 66 transitions. [2022-07-21 05:03:15,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 05:03:15,822 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:15,822 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] [2022-07-21 05:03:15,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:03:15,823 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:15,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:15,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1873142352, now seen corresponding path program 1 times [2022-07-21 05:03:15,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:15,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885460668] [2022-07-21 05:03:15,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:15,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:15,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 05:03:15,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:03:15,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:15,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885460668] [2022-07-21 05:03:15,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885460668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:03:15,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:03:15,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:03:15,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988393600] [2022-07-21 05:03:15,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:03:16,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:03:16,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:16,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:03:16,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:03:16,002 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) [2022-07-21 05:03:16,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:16,116 INFO L93 Difference]: Finished difference Result 71 states and 93 transitions. [2022-07-21 05:03:16,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 05:03:16,117 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 [2022-07-21 05:03:16,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:16,121 INFO L225 Difference]: With dead ends: 71 [2022-07-21 05:03:16,123 INFO L226 Difference]: Without dead ends: 51 [2022-07-21 05:03:16,123 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 [2022-07-21 05:03:16,124 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:16,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 365 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:03:16,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-07-21 05:03:16,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-07-21 05:03:16,136 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) [2022-07-21 05:03:16,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 68 transitions. [2022-07-21 05:03:16,141 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 68 transitions. Word has length 22 [2022-07-21 05:03:16,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:16,142 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 68 transitions. [2022-07-21 05:03:16,143 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) [2022-07-21 05:03:16,144 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 68 transitions. [2022-07-21 05:03:16,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-21 05:03:16,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:16,147 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] [2022-07-21 05:03:16,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:03:16,148 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:16,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:16,149 INFO L85 PathProgramCache]: Analyzing trace with hash 2039437329, now seen corresponding path program 1 times [2022-07-21 05:03:16,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:16,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840351150] [2022-07-21 05:03:16,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:16,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:16,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:16,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:16,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:03:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:16,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:03:16,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:16,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840351150] [2022-07-21 05:03:16,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840351150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:03:16,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:03:16,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 05:03:16,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798378566] [2022-07-21 05:03:16,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:03:16,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 05:03:16,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:16,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 05:03:16,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 05:03:16,288 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) [2022-07-21 05:03:16,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:16,349 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2022-07-21 05:03:16,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:03:16,350 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 [2022-07-21 05:03:16,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:16,353 INFO L225 Difference]: With dead ends: 57 [2022-07-21 05:03:16,354 INFO L226 Difference]: Without dead ends: 53 [2022-07-21 05:03:16,355 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 [2022-07-21 05:03:16,360 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, 7 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 [2022-07-21 05:03:16,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 244 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:03:16,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-07-21 05:03:16,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-07-21 05:03:16,377 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) [2022-07-21 05:03:16,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions. [2022-07-21 05:03:16,381 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 71 transitions. Word has length 23 [2022-07-21 05:03:16,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:16,382 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 71 transitions. [2022-07-21 05:03:16,382 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) [2022-07-21 05:03:16,382 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 71 transitions. [2022-07-21 05:03:16,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-21 05:03:16,388 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:16,388 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] [2022-07-21 05:03:16,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:03:16,388 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:16,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:16,389 INFO L85 PathProgramCache]: Analyzing trace with hash -502167403, now seen corresponding path program 1 times [2022-07-21 05:03:16,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:16,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502346151] [2022-07-21 05:03:16,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:16,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:16,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:16,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:03:16,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:16,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:03:16,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:16,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502346151] [2022-07-21 05:03:16,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502346151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:03:16,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:03:16,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:03:16,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265139782] [2022-07-21 05:03:16,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:03:16,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:03:16,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:16,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:03:16,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:03:16,468 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) [2022-07-21 05:03:16,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:16,526 INFO L93 Difference]: Finished difference Result 59 states and 78 transitions. [2022-07-21 05:03:16,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:03:16,526 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 [2022-07-21 05:03:16,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:16,527 INFO L225 Difference]: With dead ends: 59 [2022-07-21 05:03:16,528 INFO L226 Difference]: Without dead ends: 55 [2022-07-21 05:03:16,528 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 [2022-07-21 05:03:16,529 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 [2022-07-21 05:03:16,529 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] [2022-07-21 05:03:16,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-07-21 05:03:16,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2022-07-21 05:03:16,535 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) [2022-07-21 05:03:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 71 transitions. [2022-07-21 05:03:16,536 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 71 transitions. Word has length 24 [2022-07-21 05:03:16,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:16,537 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 71 transitions. [2022-07-21 05:03:16,537 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) [2022-07-21 05:03:16,537 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 71 transitions. [2022-07-21 05:03:16,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-07-21 05:03:16,539 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:16,540 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] [2022-07-21 05:03:16,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:03:16,540 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:16,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:16,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1717699423, now seen corresponding path program 1 times [2022-07-21 05:03:16,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:16,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169997843] [2022-07-21 05:03:16,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:16,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:16,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:16,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:16,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:03:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:16,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:16,620 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 05:03:16,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:16,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169997843] [2022-07-21 05:03:16,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169997843] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:16,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410795592] [2022-07-21 05:03:16,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:16,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:16,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:16,624 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) [2022-07-21 05:03:16,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 05:03:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:16,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 05:03:16,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:16,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-21 05:03:16,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:17,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 05:03:17,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410795592] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:17,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:17,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 12 [2022-07-21 05:03:17,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975217217] [2022-07-21 05:03:17,049 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:17,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 05:03:17,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:17,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 05:03:17,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-21 05:03:17,050 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) [2022-07-21 05:03:17,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:17,181 INFO L93 Difference]: Finished difference Result 68 states and 90 transitions. [2022-07-21 05:03:17,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 05:03:17,182 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 [2022-07-21 05:03:17,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:17,185 INFO L225 Difference]: With dead ends: 68 [2022-07-21 05:03:17,185 INFO L226 Difference]: Without dead ends: 51 [2022-07-21 05:03:17,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2022-07-21 05:03:17,189 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 36 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:17,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 373 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:03:17,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-07-21 05:03:17,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-07-21 05:03:17,208 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) [2022-07-21 05:03:17,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 65 transitions. [2022-07-21 05:03:17,208 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 65 transitions. Word has length 31 [2022-07-21 05:03:17,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:17,209 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 65 transitions. [2022-07-21 05:03:17,209 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) [2022-07-21 05:03:17,209 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 65 transitions. [2022-07-21 05:03:17,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-07-21 05:03:17,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:17,212 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] [2022-07-21 05:03:17,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:17,425 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 [2022-07-21 05:03:17,425 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:17,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:17,426 INFO L85 PathProgramCache]: Analyzing trace with hash 380831863, now seen corresponding path program 1 times [2022-07-21 05:03:17,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:17,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802482449] [2022-07-21 05:03:17,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:17,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:17,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:17,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:03:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:17,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:17,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 05:03:17,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:17,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802482449] [2022-07-21 05:03:17,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802482449] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:17,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529932540] [2022-07-21 05:03:17,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:17,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:17,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:17,594 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) [2022-07-21 05:03:17,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 05:03:17,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:17,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-21 05:03:17,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 05:03:17,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:18,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-21 05:03:18,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529932540] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:18,122 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:18,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 22 [2022-07-21 05:03:18,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111650188] [2022-07-21 05:03:18,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:18,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 05:03:18,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:18,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 05:03:18,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-07-21 05:03:18,124 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) [2022-07-21 05:03:18,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:18,413 INFO L93 Difference]: Finished difference Result 71 states and 88 transitions. [2022-07-21 05:03:18,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 05:03:18,420 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 [2022-07-21 05:03:18,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:18,423 INFO L225 Difference]: With dead ends: 71 [2022-07-21 05:03:18,423 INFO L226 Difference]: Without dead ends: 54 [2022-07-21 05:03:18,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=851, Unknown=0, NotChecked=0, Total=992 [2022-07-21 05:03:18,424 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 44 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:18,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 497 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:03:18,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-07-21 05:03:18,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2022-07-21 05:03:18,429 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) [2022-07-21 05:03:18,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2022-07-21 05:03:18,430 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 32 [2022-07-21 05:03:18,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:18,430 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2022-07-21 05:03:18,430 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) [2022-07-21 05:03:18,430 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2022-07-21 05:03:18,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-21 05:03:18,431 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:18,431 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] [2022-07-21 05:03:18,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:18,642 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 [2022-07-21 05:03:18,642 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:18,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:18,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1826216781, now seen corresponding path program 1 times [2022-07-21 05:03:18,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:18,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353661045] [2022-07-21 05:03:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:18,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 05:03:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,743 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 05:03:18,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:18,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353661045] [2022-07-21 05:03:18,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353661045] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:03:18,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:03:18,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 05:03:18,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812720600] [2022-07-21 05:03:18,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:03:18,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 05:03:18,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:18,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 05:03:18,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:03:18,750 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) [2022-07-21 05:03:18,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:18,786 INFO L93 Difference]: Finished difference Result 73 states and 86 transitions. [2022-07-21 05:03:18,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 05:03:18,791 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 [2022-07-21 05:03:18,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:18,793 INFO L225 Difference]: With dead ends: 73 [2022-07-21 05:03:18,793 INFO L226 Difference]: Without dead ends: 53 [2022-07-21 05:03:18,794 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 [2022-07-21 05:03:18,794 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 28 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:18,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 220 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:03:18,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-07-21 05:03:18,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2022-07-21 05:03:18,805 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) [2022-07-21 05:03:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 62 transitions. [2022-07-21 05:03:18,806 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 62 transitions. Word has length 34 [2022-07-21 05:03:18,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:18,806 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 62 transitions. [2022-07-21 05:03:18,807 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) [2022-07-21 05:03:18,807 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 62 transitions. [2022-07-21 05:03:18,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-21 05:03:18,810 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:18,810 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] [2022-07-21 05:03:18,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:03:18,811 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:18,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:18,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1825803044, now seen corresponding path program 1 times [2022-07-21 05:03:18,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:18,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537284841] [2022-07-21 05:03:18,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:18,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:18,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:03:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 05:03:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 05:03:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,888 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-21 05:03:18,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:18,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537284841] [2022-07-21 05:03:18,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537284841] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:03:18,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:03:18,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:03:18,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921492801] [2022-07-21 05:03:18,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:03:18,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:03:18,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:18,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:03:18,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:03:18,891 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) [2022-07-21 05:03:18,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:18,928 INFO L93 Difference]: Finished difference Result 104 states and 131 transitions. [2022-07-21 05:03:18,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:03:18,928 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 [2022-07-21 05:03:18,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:18,929 INFO L225 Difference]: With dead ends: 104 [2022-07-21 05:03:18,929 INFO L226 Difference]: Without dead ends: 51 [2022-07-21 05:03:18,930 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 [2022-07-21 05:03:18,931 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 [2022-07-21 05:03:18,931 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] [2022-07-21 05:03:18,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-07-21 05:03:18,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2022-07-21 05:03:18,934 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) [2022-07-21 05:03:18,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2022-07-21 05:03:18,935 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 52 [2022-07-21 05:03:18,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:18,935 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2022-07-21 05:03:18,936 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) [2022-07-21 05:03:18,936 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2022-07-21 05:03:18,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-21 05:03:18,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:18,937 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] [2022-07-21 05:03:18,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:03:18,937 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:18,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:18,938 INFO L85 PathProgramCache]: Analyzing trace with hash 654757234, now seen corresponding path program 1 times [2022-07-21 05:03:18,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:18,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927883730] [2022-07-21 05:03:18,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:18,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:03:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 05:03:18,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 05:03:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:18,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:19,003 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 05:03:19,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:19,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927883730] [2022-07-21 05:03:19,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927883730] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:19,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507943469] [2022-07-21 05:03:19,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:19,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:19,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:19,008 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) [2022-07-21 05:03:19,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 05:03:19,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:19,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 05:03:19,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:19,095 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 05:03:19,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 05:03:19,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507943469] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:03:19,095 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 05:03:19,095 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-07-21 05:03:19,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654074819] [2022-07-21 05:03:19,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:03:19,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:03:19,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:19,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:03:19,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 05:03:19,097 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) [2022-07-21 05:03:19,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:19,133 INFO L93 Difference]: Finished difference Result 96 states and 116 transitions. [2022-07-21 05:03:19,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:03:19,134 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 [2022-07-21 05:03:19,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:19,135 INFO L225 Difference]: With dead ends: 96 [2022-07-21 05:03:19,135 INFO L226 Difference]: Without dead ends: 51 [2022-07-21 05:03:19,136 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 [2022-07-21 05:03:19,139 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 [2022-07-21 05:03:19,141 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] [2022-07-21 05:03:19,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-07-21 05:03:19,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-07-21 05:03:19,147 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) [2022-07-21 05:03:19,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2022-07-21 05:03:19,148 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 53 [2022-07-21 05:03:19,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:19,148 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2022-07-21 05:03:19,148 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) [2022-07-21 05:03:19,148 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2022-07-21 05:03:19,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-07-21 05:03:19,149 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:19,149 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] [2022-07-21 05:03:19,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:19,367 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 [2022-07-21 05:03:19,367 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:19,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:19,368 INFO L85 PathProgramCache]: Analyzing trace with hash 689204116, now seen corresponding path program 1 times [2022-07-21 05:03:19,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:19,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704374626] [2022-07-21 05:03:19,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:19,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:19,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:19,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:19,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:19,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:03:19,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:19,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:03:19,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:19,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 05:03:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:19,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 05:03:19,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:19,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:19,494 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 05:03:19,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:19,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704374626] [2022-07-21 05:03:19,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704374626] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:19,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468475866] [2022-07-21 05:03:19,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:19,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:19,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:19,497 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) [2022-07-21 05:03:19,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 05:03:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:19,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-21 05:03:19,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:19,687 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 05:03:19,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:19,979 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-21 05:03:19,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468475866] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:19,980 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:19,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 18 [2022-07-21 05:03:19,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477392679] [2022-07-21 05:03:19,981 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:19,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 05:03:19,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:19,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 05:03:19,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-07-21 05:03:19,983 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) [2022-07-21 05:03:20,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:20,249 INFO L93 Difference]: Finished difference Result 90 states and 112 transitions. [2022-07-21 05:03:20,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 05:03:20,250 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 [2022-07-21 05:03:20,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:20,251 INFO L225 Difference]: With dead ends: 90 [2022-07-21 05:03:20,251 INFO L226 Difference]: Without dead ends: 59 [2022-07-21 05:03:20,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=125, Invalid=525, Unknown=0, NotChecked=0, Total=650 [2022-07-21 05:03:20,252 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 84 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:20,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 335 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:03:20,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-07-21 05:03:20,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2022-07-21 05:03:20,257 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) [2022-07-21 05:03:20,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2022-07-21 05:03:20,258 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 62 [2022-07-21 05:03:20,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:20,258 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2022-07-21 05:03:20,258 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) [2022-07-21 05:03:20,259 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2022-07-21 05:03:20,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-21 05:03:20,259 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:20,260 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] [2022-07-21 05:03:20,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:20,467 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 [2022-07-21 05:03:20,468 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:20,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:20,468 INFO L85 PathProgramCache]: Analyzing trace with hash -729550012, now seen corresponding path program 2 times [2022-07-21 05:03:20,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:20,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777863310] [2022-07-21 05:03:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:20,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:03:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:03:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:03:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 05:03:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 05:03:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:20,670 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 05:03:20,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:20,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777863310] [2022-07-21 05:03:20,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777863310] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:20,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059347403] [2022-07-21 05:03:20,671 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 05:03:20,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:20,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:20,673 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) [2022-07-21 05:03:20,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 05:03:20,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 05:03:20,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:03:20,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-21 05:03:20,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:20,959 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-21 05:03:20,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-21 05:03:21,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059347403] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:21,519 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:21,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 22 [2022-07-21 05:03:21,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049955759] [2022-07-21 05:03:21,521 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:21,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 05:03:21,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:21,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 05:03:21,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2022-07-21 05:03:21,523 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) [2022-07-21 05:03:21,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:21,910 INFO L93 Difference]: Finished difference Result 150 states and 199 transitions. [2022-07-21 05:03:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 05:03:21,912 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 [2022-07-21 05:03:21,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:21,914 INFO L225 Difference]: With dead ends: 150 [2022-07-21 05:03:21,914 INFO L226 Difference]: Without dead ends: 95 [2022-07-21 05:03:21,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=699, Unknown=0, NotChecked=0, Total=870 [2022-07-21 05:03:21,915 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 100 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:21,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 335 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 05:03:21,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-07-21 05:03:21,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91. [2022-07-21 05:03:21,932 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) [2022-07-21 05:03:21,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 117 transitions. [2022-07-21 05:03:21,933 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 117 transitions. Word has length 71 [2022-07-21 05:03:21,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:21,935 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 117 transitions. [2022-07-21 05:03:21,936 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) [2022-07-21 05:03:21,936 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 117 transitions. [2022-07-21 05:03:21,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 05:03:21,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:21,938 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] [2022-07-21 05:03:21,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:22,151 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 [2022-07-21 05:03:22,152 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:22,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:22,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1100264158, now seen corresponding path program 1 times [2022-07-21 05:03:22,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:22,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505318503] [2022-07-21 05:03:22,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:22,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:03:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:03:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:03:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-21 05:03:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-21 05:03:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,227 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 05:03:22,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:22,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505318503] [2022-07-21 05:03:22,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505318503] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:03:22,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:03:22,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:03:22,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134040352] [2022-07-21 05:03:22,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:03:22,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:03:22,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:22,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:03:22,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:03:22,230 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) [2022-07-21 05:03:22,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:22,264 INFO L93 Difference]: Finished difference Result 178 states and 250 transitions. [2022-07-21 05:03:22,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 05:03:22,265 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 [2022-07-21 05:03:22,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:22,266 INFO L225 Difference]: With dead ends: 178 [2022-07-21 05:03:22,266 INFO L226 Difference]: Without dead ends: 91 [2022-07-21 05:03:22,267 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 [2022-07-21 05:03:22,267 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 [2022-07-21 05:03:22,268 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] [2022-07-21 05:03:22,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2022-07-21 05:03:22,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2022-07-21 05:03:22,276 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) [2022-07-21 05:03:22,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 115 transitions. [2022-07-21 05:03:22,277 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 115 transitions. Word has length 78 [2022-07-21 05:03:22,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:22,278 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 115 transitions. [2022-07-21 05:03:22,278 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) [2022-07-21 05:03:22,278 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 115 transitions. [2022-07-21 05:03:22,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-21 05:03:22,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:03:22,280 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] [2022-07-21 05:03:22,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 05:03:22,280 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:03:22,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:03:22,281 INFO L85 PathProgramCache]: Analyzing trace with hash -862294776, now seen corresponding path program 2 times [2022-07-21 05:03:22,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:03:22,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691100014] [2022-07-21 05:03:22,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:03:22,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:03:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:22,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:03:22,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:03:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:03:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-21 05:03:22,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-21 05:03:22,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 05:03:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 05:03:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 05:03:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:03:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-21 05:03:22,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:03:22,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691100014] [2022-07-21 05:03:22,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691100014] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 05:03:22,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682766921] [2022-07-21 05:03:22,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-21 05:03:22,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 05:03:22,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:03:22,472 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) [2022-07-21 05:03:22,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 05:03:22,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-21 05:03:22,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-21 05:03:22,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-21 05:03:22,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 05:03:22,720 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 4 proven. 60 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 05:03:22,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 05:03:24,019 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 05:03:24,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682766921] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 05:03:24,020 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 05:03:24,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14, 14] total 25 [2022-07-21 05:03:24,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560888255] [2022-07-21 05:03:24,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 05:03:24,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-21 05:03:24,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:03:24,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-21 05:03:24,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-07-21 05:03:24,022 INFO L87 Difference]: Start difference. First operand 91 states and 115 transitions. Second operand has 25 states, 24 states have (on average 5.166666666666667) internal successors, (124), 25 states have internal predecessors, (124), 15 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (23), 7 states have call predecessors, (23), 15 states have call successors, (23) [2022-07-21 05:03:24,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:03:24,280 INFO L93 Difference]: Finished difference Result 152 states and 206 transitions. [2022-07-21 05:03:24,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 05:03:24,281 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 5.166666666666667) internal successors, (124), 25 states have internal predecessors, (124), 15 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (23), 7 states have call predecessors, (23), 15 states have call successors, (23) Word has length 87 [2022-07-21 05:03:24,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:03:24,282 INFO L225 Difference]: With dead ends: 152 [2022-07-21 05:03:24,282 INFO L226 Difference]: Without dead ends: 0 [2022-07-21 05:03:24,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=240, Invalid=816, Unknown=0, NotChecked=0, Total=1056 [2022-07-21 05:03:24,283 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 100 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:03:24,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 195 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:03:24,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-21 05:03:24,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-21 05:03:24,284 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) [2022-07-21 05:03:24,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-21 05:03:24,285 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 87 [2022-07-21 05:03:24,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:03:24,285 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-21 05:03:24,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 5.166666666666667) internal successors, (124), 25 states have internal predecessors, (124), 15 states have call successors, (22), 2 states have call predecessors, (22), 8 states have return successors, (23), 7 states have call predecessors, (23), 15 states have call successors, (23) [2022-07-21 05:03:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-21 05:03:24,285 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-21 05:03:24,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 05:03:24,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 05:03:24,499 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 [2022-07-21 05:03:24,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-21 05:03:24,681 INFO L895 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: (and (= |multiple_of_#in~m| multiple_of_~m) (<= |multiple_of_#in~m| 0)) [2022-07-21 05:03:24,682 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 34) no Hoare annotation was computed. [2022-07-21 05:03:24,682 INFO L899 garLoopResultBuilder]: For program point L33-1(line 33) no Hoare annotation was computed. [2022-07-21 05:03:24,682 INFO L899 garLoopResultBuilder]: For program point multiple_ofFINAL(lines 31 45) no Hoare annotation was computed. [2022-07-21 05:03:24,682 INFO L895 garLoopResultBuilder]: At program point L44(line 44) the Hoare annotation is: (and (= |multiple_of_#in~m| multiple_of_~m) (= |multiple_of_#in~n| multiple_of_~n) (< 0 multiple_of_~n)) [2022-07-21 05:03:24,682 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2022-07-21 05:03:24,682 INFO L902 garLoopResultBuilder]: At program point multiple_ofENTRY(lines 31 45) the Hoare annotation is: true [2022-07-21 05:03:24,682 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 43) no Hoare annotation was computed. [2022-07-21 05:03:24,682 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 40) no Hoare annotation was computed. [2022-07-21 05:03:24,682 INFO L895 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (and (= |multiple_of_#in~m| multiple_of_~m) (not (<= 0 |multiple_of_#in~n|)) (= |multiple_of_#in~n| multiple_of_~n)) [2022-07-21 05:03:24,682 INFO L899 garLoopResultBuilder]: For program point multiple_ofEXIT(lines 31 45) no Hoare annotation was computed. [2022-07-21 05:03:24,682 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 37) no Hoare annotation was computed. [2022-07-21 05:03:24,682 INFO L899 garLoopResultBuilder]: For program point L36-1(line 36) no Hoare annotation was computed. [2022-07-21 05:03:24,682 INFO L902 garLoopResultBuilder]: At program point multENTRY(lines 17 28) the Hoare annotation is: true [2022-07-21 05:03:24,682 INFO L895 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (= |mult_#in~n| mult_~n) (= |mult_#in~m| mult_~m) (< 1 mult_~m)) [2022-07-21 05:03:24,683 INFO L899 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2022-07-21 05:03:24,683 INFO L899 garLoopResultBuilder]: For program point L24(lines 24 26) no Hoare annotation was computed. [2022-07-21 05:03:24,683 INFO L899 garLoopResultBuilder]: For program point L21(lines 21 23) no Hoare annotation was computed. [2022-07-21 05:03:24,683 INFO L895 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (and (= |mult_#in~m| mult_~m) (<= |mult_#in~m| 0)) [2022-07-21 05:03:24,683 INFO L899 garLoopResultBuilder]: For program point L18(lines 18 20) no Hoare annotation was computed. [2022-07-21 05:03:24,683 INFO L899 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2022-07-21 05:03:24,683 INFO L899 garLoopResultBuilder]: For program point multFINAL(lines 17 28) no Hoare annotation was computed. [2022-07-21 05:03:24,683 INFO L899 garLoopResultBuilder]: For program point multEXIT(lines 17 28) no Hoare annotation was computed. [2022-07-21 05:03:24,683 INFO L899 garLoopResultBuilder]: For program point L97(line 97) no Hoare annotation was computed. [2022-07-21 05:03:24,683 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-21 05:03:24,683 INFO L895 garLoopResultBuilder]: At program point L97-1(line 97) the Hoare annotation is: (and (<= |ULTIMATE.start_main_~n~0#1| 2) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_is_prime_~n#1|)) [2022-07-21 05:03:24,683 INFO L899 garLoopResultBuilder]: For program point L97-2(line 97) no Hoare annotation was computed. [2022-07-21 05:03:24,683 INFO L899 garLoopResultBuilder]: For program point L97-4(lines 97 101) no Hoare annotation was computed. [2022-07-21 05:03:24,683 INFO L899 garLoopResultBuilder]: For program point L91(lines 91 95) no Hoare annotation was computed. [2022-07-21 05:03:24,684 INFO L899 garLoopResultBuilder]: For program point L85(lines 85 89) no Hoare annotation was computed. [2022-07-21 05:03:24,684 INFO L902 garLoopResultBuilder]: At program point L100(lines 76 102) the Hoare annotation is: true [2022-07-21 05:03:24,684 INFO L899 garLoopResultBuilder]: For program point L98(line 98) no Hoare annotation was computed. [2022-07-21 05:03:24,684 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-21 05:03:24,684 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-21 05:03:24,684 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-21 05:03:24,684 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 98) no Hoare annotation was computed. [2022-07-21 05:03:24,684 INFO L895 garLoopResultBuilder]: At program point L53(line 53) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_is_prime_~n#1|)) [2022-07-21 05:03:24,684 INFO L899 garLoopResultBuilder]: For program point L53-1(line 53) no Hoare annotation was computed. [2022-07-21 05:03:24,684 INFO L895 garLoopResultBuilder]: At program point L53-2(lines 52 54) the Hoare annotation is: (or (= |ULTIMATE.start_is_prime_#res#1| 0) (and (<= |ULTIMATE.start_main_~n~0#1| 2) (<= 1 |ULTIMATE.start_main_~n~0#1|) (<= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_is_prime_~n#1|))) [2022-07-21 05:03:24,684 INFO L899 garLoopResultBuilder]: For program point L78(lines 78 82) no Hoare annotation was computed. [2022-07-21 05:03:24,684 INFO L899 garLoopResultBuilder]: For program point L65(lines 65 72) no Hoare annotation was computed. [2022-07-21 05:03:24,684 INFO L899 garLoopResultBuilder]: For program point is_prime_EXIT(lines 57 74) no Hoare annotation was computed. [2022-07-21 05:03:24,684 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 73) no Hoare annotation was computed. [2022-07-21 05:03:24,684 INFO L899 garLoopResultBuilder]: For program point L61(lines 61 63) no Hoare annotation was computed. [2022-07-21 05:03:24,685 INFO L899 garLoopResultBuilder]: For program point is_prime_FINAL(lines 57 74) no Hoare annotation was computed. [2022-07-21 05:03:24,685 INFO L902 garLoopResultBuilder]: At program point is_prime_ENTRY(lines 57 74) the Hoare annotation is: true [2022-07-21 05:03:24,685 INFO L899 garLoopResultBuilder]: For program point L58(lines 58 60) no Hoare annotation was computed. [2022-07-21 05:03:24,685 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse0 (= |is_prime__#in~n| is_prime__~n)) (.cse1 (= |is_prime__#in~m| is_prime__~m))) (or (and .cse0 .cse1 (<= |is_prime__#in~m| (div |is_prime__#in~n| 2)) (<= 2 is_prime__~m)) (and .cse0 .cse1 (<= is_prime__~n is_prime__~m) (< 2 is_prime__~n)))) [2022-07-21 05:03:24,685 INFO L899 garLoopResultBuilder]: For program point L71-1(line 71) no Hoare annotation was computed. [2022-07-21 05:03:24,685 INFO L895 garLoopResultBuilder]: At program point L68(line 68) the Hoare annotation is: (and (= |is_prime__#in~n| is_prime__~n) (= |is_prime__#in~m| is_prime__~m) (<= 2 is_prime__~m) (< 2 is_prime__~n)) [2022-07-21 05:03:24,685 INFO L899 garLoopResultBuilder]: For program point L68-1(line 68) no Hoare annotation was computed. [2022-07-21 05:03:24,685 INFO L899 garLoopResultBuilder]: For program point L68-2(lines 68 70) no Hoare annotation was computed. [2022-07-21 05:03:24,687 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:03:24,689 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 05:03:24,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:03:24 BoogieIcfgContainer [2022-07-21 05:03:24,702 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 05:03:24,702 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 05:03:24,702 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 05:03:24,703 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 05:03:24,703 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:03:15" (3/4) ... [2022-07-21 05:03:24,705 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-21 05:03:24,709 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure multiple_of [2022-07-21 05:03:24,710 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure mult [2022-07-21 05:03:24,710 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure is_prime_ [2022-07-21 05:03:24,714 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-07-21 05:03:24,714 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-07-21 05:03:24,715 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-21 05:03:24,715 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-21 05:03:24,736 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \result == 0 || ((n <= 2 && 1 <= n) && n <= n) [2022-07-21 05:03:24,751 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 05:03:24,751 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 05:03:24,752 INFO L158 Benchmark]: Toolchain (without parser) took 10161.39ms. Allocated memory was 48.2MB in the beginning and 117.4MB in the end (delta: 69.2MB). Free memory was 25.5MB in the beginning and 32.7MB in the end (delta: -7.1MB). Peak memory consumption was 60.4MB. Max. memory is 16.1GB. [2022-07-21 05:03:24,752 INFO L158 Benchmark]: CDTParser took 0.74ms. Allocated memory is still 48.2MB. Free memory was 30.7MB in the beginning and 30.7MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 05:03:24,753 INFO L158 Benchmark]: CACSL2BoogieTranslator took 192.64ms. Allocated memory was 48.2MB in the beginning and 65.0MB in the end (delta: 16.8MB). Free memory was 25.3MB in the beginning and 49.5MB in the end (delta: -24.1MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. [2022-07-21 05:03:24,753 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.90ms. Allocated memory is still 65.0MB. Free memory was 49.5MB in the beginning and 47.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 05:03:24,753 INFO L158 Benchmark]: Boogie Preprocessor took 38.99ms. Allocated memory is still 65.0MB. Free memory was 47.8MB in the beginning and 46.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 05:03:24,753 INFO L158 Benchmark]: RCFGBuilder took 385.41ms. Allocated memory is still 65.0MB. Free memory was 46.6MB in the beginning and 34.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 05:03:24,754 INFO L158 Benchmark]: TraceAbstraction took 9439.48ms. Allocated memory was 65.0MB in the beginning and 117.4MB in the end (delta: 52.4MB). Free memory was 34.3MB in the beginning and 35.8MB in the end (delta: -1.5MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. [2022-07-21 05:03:24,754 INFO L158 Benchmark]: Witness Printer took 49.13ms. Allocated memory is still 117.4MB. Free memory was 35.8MB in the beginning and 32.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 05:03:24,768 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74ms. Allocated memory is still 48.2MB. Free memory was 30.7MB in the beginning and 30.7MB in the end (delta: 33.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 192.64ms. Allocated memory was 48.2MB in the beginning and 65.0MB in the end (delta: 16.8MB). Free memory was 25.3MB in the beginning and 49.5MB in the end (delta: -24.1MB). Peak memory consumption was 7.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.90ms. Allocated memory is still 65.0MB. Free memory was 49.5MB in the beginning and 47.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.99ms. Allocated memory is still 65.0MB. Free memory was 47.8MB in the beginning and 46.8MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 385.41ms. Allocated memory is still 65.0MB. Free memory was 46.6MB in the beginning and 34.8MB in the end (delta: 11.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 9439.48ms. Allocated memory was 65.0MB in the beginning and 117.4MB in the end (delta: 52.4MB). Free memory was 34.3MB in the beginning and 35.8MB in the end (delta: -1.5MB). Peak memory consumption was 52.8MB. Max. memory is 16.1GB. * Witness Printer took 49.13ms. Allocated memory is still 117.4MB. Free memory was 35.8MB in the beginning and 32.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: 9.3s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 494 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 455 mSDsluCounter, 3396 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2731 mSDsCounter, 235 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1380 IncrementalHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 235 mSolverCounterUnsat, 665 mSDtfsCounter, 1380 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 862 GetRequests, 688 SyntacticMatches, 7 SemanticMatches, 167 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 591 ImplicationChecksByTransitivity, 1.5s 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, 248 NumberOfFragments, 122 HoareAnnotationTreeSize, 207 FomulaSimplifications, 261 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 14 FomulaSimplificationsInter, 343 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 920 NumberOfCodeBlocks, 920 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1179 ConstructedInterpolants, 0 QuantifiedInterpolants, 2999 SizeOfPredicates, 33 NumberOfNonLiveVariables, 1038 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 287/540 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 && 1 <= n) && n <= n) - InvariantResult [Line: 76]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-07-21 05:03:24,801 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