./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.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 0275b6de2ba0a66ec9aee8de32ff466d54e24272e5f9096b55f3975f63dd9962 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 09:24:48,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 09:24:48,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 09:24:48,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 09:24:48,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 09:24:48,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 09:24:48,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 09:24:48,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 09:24:48,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 09:24:48,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 09:24:48,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 09:24:48,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 09:24:48,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 09:24:48,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 09:24:48,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 09:24:48,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 09:24:48,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 09:24:48,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 09:24:48,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 09:24:48,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 09:24:48,264 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 09:24:48,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 09:24:48,266 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 09:24:48,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 09:24:48,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 09:24:48,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 09:24:48,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 09:24:48,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 09:24:48,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 09:24:48,273 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 09:24:48,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 09:24:48,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 09:24:48,275 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 09:24:48,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 09:24:48,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 09:24:48,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 09:24:48,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 09:24:48,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 09:24:48,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 09:24:48,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 09:24:48,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 09:24:48,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 09:24:48,281 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 09:24:48,307 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 09:24:48,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 09:24:48,308 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 09:24:48,308 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 09:24:48,309 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 09:24:48,309 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 09:24:48,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 09:24:48,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 09:24:48,310 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 09:24:48,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 09:24:48,311 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 09:24:48,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 09:24:48,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 09:24:48,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 09:24:48,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 09:24:48,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 09:24:48,312 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 09:24:48,312 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 09:24:48,312 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 09:24:48,312 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 09:24:48,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 09:24:48,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 09:24:48,313 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 09:24:48,313 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 09:24:48,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:24:48,314 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 09:24:48,314 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 09:24:48,314 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 09:24:48,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 09:24:48,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 09:24:48,315 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 09:24:48,315 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 09:24:48,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 09:24:48,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0275b6de2ba0a66ec9aee8de32ff466d54e24272e5f9096b55f3975f63dd9962 [2022-07-12 09:24:48,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 09:24:48,527 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 09:24:48,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 09:24:48,529 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 09:24:48,530 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 09:24:48,531 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c [2022-07-12 09:24:48,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d310cf1/0fc7f25f3d3749c5a57d7838f2f16688/FLAG380eefd55 [2022-07-12 09:24:49,132 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 09:24:49,133 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c [2022-07-12 09:24:49,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d310cf1/0fc7f25f3d3749c5a57d7838f2f16688/FLAG380eefd55 [2022-07-12 09:24:49,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62d310cf1/0fc7f25f3d3749c5a57d7838f2f16688 [2022-07-12 09:24:49,565 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 09:24:49,565 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 09:24:49,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 09:24:49,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 09:24:49,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 09:24:49,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:24:49" (1/1) ... [2022-07-12 09:24:49,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@200b044e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:24:49, skipping insertion in model container [2022-07-12 09:24:49,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 09:24:49" (1/1) ... [2022-07-12 09:24:49,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 09:24:49,654 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 09:24:49,914 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c[26860,26873] [2022-07-12 09:24:49,924 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c[27702,27715] [2022-07-12 09:24:50,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:24:50,409 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 09:24:50,452 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c[26860,26873] [2022-07-12 09:24:50,458 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/combinations/pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c[27702,27715] [2022-07-12 09:24:50,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 09:24:50,763 INFO L208 MainTranslator]: Completed translation [2022-07-12 09:24:50,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:24:50 WrapperNode [2022-07-12 09:24:50,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 09:24:50,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 09:24:50,766 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 09:24:50,766 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 09:24:50,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:24:50" (1/1) ... [2022-07-12 09:24:50,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:24:50" (1/1) ... [2022-07-12 09:24:51,131 INFO L137 Inliner]: procedures = 39, calls = 25, calls flagged for inlining = 20, calls inlined = 20, statements flattened = 5281 [2022-07-12 09:24:51,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 09:24:51,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 09:24:51,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 09:24:51,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 09:24:51,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:24:50" (1/1) ... [2022-07-12 09:24:51,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:24:50" (1/1) ... [2022-07-12 09:24:51,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:24:50" (1/1) ... [2022-07-12 09:24:51,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:24:50" (1/1) ... [2022-07-12 09:24:51,377 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:24:50" (1/1) ... [2022-07-12 09:24:51,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:24:50" (1/1) ... [2022-07-12 09:24:51,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:24:50" (1/1) ... [2022-07-12 09:24:51,525 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 09:24:51,527 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 09:24:51,527 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 09:24:51,527 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 09:24:51,529 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:24:50" (1/1) ... [2022-07-12 09:24:51,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 09:24:51,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 09:24:51,554 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) [2022-07-12 09:24:51,560 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 [2022-07-12 09:24:51,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 09:24:51,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 09:24:51,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 09:24:51,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 09:24:51,698 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 09:24:51,700 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 09:24:54,264 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 09:24:54,280 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 09:24:54,280 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 09:24:54,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:24:54 BoogieIcfgContainer [2022-07-12 09:24:54,283 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 09:24:54,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 09:24:54,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 09:24:54,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 09:24:54,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 09:24:49" (1/3) ... [2022-07-12 09:24:54,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6e2e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:24:54, skipping insertion in model container [2022-07-12 09:24:54,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 09:24:50" (2/3) ... [2022-07-12 09:24:54,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b6e2e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 09:24:54, skipping insertion in model container [2022-07-12 09:24:54,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 09:24:54" (3/3) ... [2022-07-12 09:24:54,289 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.8.ufo.BOUNDED-16.pals+Problem12_label07.c [2022-07-12 09:24:54,299 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 09:24:54,299 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-12 09:24:54,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 09:24:54,367 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@25858d35, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@775cf07a [2022-07-12 09:24:54,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-12 09:24:54,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 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) [2022-07-12 09:24:54,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 09:24:54,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:24:54,378 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:24:54,378 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:24:54,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:24:54,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1822785820, now seen corresponding path program 1 times [2022-07-12 09:24:54,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:24:54,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817974520] [2022-07-12 09:24:54,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:24:54,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:24:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:24:54,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:24:54,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:24:54,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817974520] [2022-07-12 09:24:54,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817974520] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:24:54,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:24:54,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:24:54,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660654358] [2022-07-12 09:24:54,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:24:54,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:24:54,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:24:54,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:24:54,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:24:54,587 INFO L87 Difference]: Start difference. First operand has 963 states, 960 states have (on average 1.896875) internal successors, (1821), 962 states have internal predecessors, (1821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-07-12 09:24:57,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:24:57,372 INFO L93 Difference]: Finished difference Result 2614 states and 5014 transitions. [2022-07-12 09:24:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:24:57,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-07-12 09:24:57,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:24:57,396 INFO L225 Difference]: With dead ends: 2614 [2022-07-12 09:24:57,396 INFO L226 Difference]: Without dead ends: 1648 [2022-07-12 09:24:57,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:24:57,402 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 1080 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2334 mSolverCounterSat, 651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 2985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 651 IncrementalHoareTripleChecker+Valid, 2334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-12 09:24:57,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 735 Invalid, 2985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [651 Valid, 2334 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-12 09:24:57,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-07-12 09:24:57,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2022-07-12 09:24:57,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1646 states have (on average 1.649453219927096) internal successors, (2715), 1647 states have internal predecessors, (2715), 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) [2022-07-12 09:24:57,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2715 transitions. [2022-07-12 09:24:57,480 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2715 transitions. Word has length 7 [2022-07-12 09:24:57,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:24:57,481 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2715 transitions. [2022-07-12 09:24:57,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-07-12 09:24:57,481 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2715 transitions. [2022-07-12 09:24:57,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-12 09:24:57,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:24:57,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:24:57,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 09:24:57,483 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:24:57,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:24:57,484 INFO L85 PathProgramCache]: Analyzing trace with hash 815979124, now seen corresponding path program 1 times [2022-07-12 09:24:57,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:24:57,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034213996] [2022-07-12 09:24:57,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:24:57,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:24:57,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:24:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:24:57,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:24:57,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034213996] [2022-07-12 09:24:57,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034213996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:24:57,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:24:57,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:24:57,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688918859] [2022-07-12 09:24:57,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:24:57,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:24:57,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:24:57,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:24:57,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:24:57,550 INFO L87 Difference]: Start difference. First operand 1648 states and 2715 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:24:57,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:24:57,620 INFO L93 Difference]: Finished difference Result 1728 states and 2840 transitions. [2022-07-12 09:24:57,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 09:24:57,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-07-12 09:24:57,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:24:57,626 INFO L225 Difference]: With dead ends: 1728 [2022-07-12 09:24:57,626 INFO L226 Difference]: Without dead ends: 1648 [2022-07-12 09:24:57,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-12 09:24:57,627 INFO L413 NwaCegarLoop]: 1686 mSDtfsCounter, 3 mSDsluCounter, 4994 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6680 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:24:57,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6680 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:24:57,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1648 states. [2022-07-12 09:24:57,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1648 to 1648. [2022-07-12 09:24:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1646 states have (on average 1.6123936816524909) internal successors, (2654), 1647 states have internal predecessors, (2654), 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) [2022-07-12 09:24:57,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2654 transitions. [2022-07-12 09:24:57,652 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2654 transitions. Word has length 46 [2022-07-12 09:24:57,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:24:57,652 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2654 transitions. [2022-07-12 09:24:57,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:24:57,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2654 transitions. [2022-07-12 09:24:57,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-12 09:24:57,654 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:24:57,654 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1] [2022-07-12 09:24:57,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 09:24:57,655 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:24:57,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:24:57,655 INFO L85 PathProgramCache]: Analyzing trace with hash 59505501, now seen corresponding path program 1 times [2022-07-12 09:24:57,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:24:57,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965104629] [2022-07-12 09:24:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:24:57,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:24:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:24:57,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 09:24:57,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:24:57,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965104629] [2022-07-12 09:24:57,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965104629] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:24:57,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:24:57,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:24:57,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843205866] [2022-07-12 09:24:57,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:24:57,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:24:57,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:24:57,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:24:57,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:24:57,771 INFO L87 Difference]: Start difference. First operand 1648 states and 2654 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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) [2022-07-12 09:25:00,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:25:00,250 INFO L93 Difference]: Finished difference Result 4654 states and 7581 transitions. [2022-07-12 09:25:00,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:25:00,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-07-12 09:25:00,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:25:00,261 INFO L225 Difference]: With dead ends: 4654 [2022-07-12 09:25:00,261 INFO L226 Difference]: Without dead ends: 3150 [2022-07-12 09:25:00,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:00,264 INFO L413 NwaCegarLoop]: 656 mSDtfsCounter, 913 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-12 09:25:00,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 663 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-07-12 09:25:00,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3150 states. [2022-07-12 09:25:00,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3150 to 3150. [2022-07-12 09:25:00,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3150 states, 3148 states have (on average 1.4212198221092758) internal successors, (4474), 3149 states have internal predecessors, (4474), 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) [2022-07-12 09:25:00,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3150 states to 3150 states and 4474 transitions. [2022-07-12 09:25:00,307 INFO L78 Accepts]: Start accepts. Automaton has 3150 states and 4474 transitions. Word has length 78 [2022-07-12 09:25:00,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:25:00,307 INFO L495 AbstractCegarLoop]: Abstraction has 3150 states and 4474 transitions. [2022-07-12 09:25:00,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 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) [2022-07-12 09:25:00,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3150 states and 4474 transitions. [2022-07-12 09:25:00,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-12 09:25:00,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:25:00,309 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:25:00,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 09:25:00,310 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:25:00,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:25:00,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1398624595, now seen corresponding path program 1 times [2022-07-12 09:25:00,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:25:00,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755120925] [2022-07-12 09:25:00,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:25:00,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:25:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:25:00,364 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:25:00,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:25:00,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755120925] [2022-07-12 09:25:00,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755120925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:25:00,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:25:00,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:25:00,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005368003] [2022-07-12 09:25:00,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:25:00,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:25:00,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:25:00,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:25:00,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:00,366 INFO L87 Difference]: Start difference. First operand 3150 states and 4474 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2022-07-12 09:25:02,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:25:02,639 INFO L93 Difference]: Finished difference Result 9160 states and 13041 transitions. [2022-07-12 09:25:02,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:25:02,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2022-07-12 09:25:02,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:25:02,655 INFO L225 Difference]: With dead ends: 9160 [2022-07-12 09:25:02,656 INFO L226 Difference]: Without dead ends: 6154 [2022-07-12 09:25:02,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:02,660 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 961 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1995 mSolverCounterSat, 935 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 961 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 2930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 935 IncrementalHoareTripleChecker+Valid, 1995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-12 09:25:02,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [961 Valid, 636 Invalid, 2930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [935 Valid, 1995 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-12 09:25:02,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2022-07-12 09:25:02,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 6154. [2022-07-12 09:25:02,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6154 states, 6152 states have (on average 1.2956762028608582) internal successors, (7971), 6153 states have internal predecessors, (7971), 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) [2022-07-12 09:25:02,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6154 states to 6154 states and 7971 transitions. [2022-07-12 09:25:02,734 INFO L78 Accepts]: Start accepts. Automaton has 6154 states and 7971 transitions. Word has length 82 [2022-07-12 09:25:02,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:25:02,735 INFO L495 AbstractCegarLoop]: Abstraction has 6154 states and 7971 transitions. [2022-07-12 09:25:02,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 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) [2022-07-12 09:25:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 6154 states and 7971 transitions. [2022-07-12 09:25:02,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-12 09:25:02,739 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:25:02,740 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:25:02,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 09:25:02,740 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:25:02,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:25:02,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1093814204, now seen corresponding path program 1 times [2022-07-12 09:25:02,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:25:02,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685228395] [2022-07-12 09:25:02,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:25:02,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:25:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:25:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:25:02,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:25:02,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685228395] [2022-07-12 09:25:02,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685228395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:25:02,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:25:02,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 09:25:02,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546221011] [2022-07-12 09:25:02,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:25:02,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:25:02,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:25:02,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:25:02,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:02,816 INFO L87 Difference]: Start difference. First operand 6154 states and 7971 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2022-07-12 09:25:05,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:25:05,172 INFO L93 Difference]: Finished difference Result 18174 states and 23533 transitions. [2022-07-12 09:25:05,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:25:05,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-07-12 09:25:05,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:25:05,201 INFO L225 Difference]: With dead ends: 18174 [2022-07-12 09:25:05,201 INFO L226 Difference]: Without dead ends: 12164 [2022-07-12 09:25:05,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:05,211 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 1097 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 550 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 550 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-12 09:25:05,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 540 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [550 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-07-12 09:25:05,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12164 states. [2022-07-12 09:25:05,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12164 to 11411. [2022-07-12 09:25:05,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11411 states, 11409 states have (on average 1.2290297133841703) internal successors, (14022), 11410 states have internal predecessors, (14022), 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) [2022-07-12 09:25:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11411 states to 11411 states and 14022 transitions. [2022-07-12 09:25:05,388 INFO L78 Accepts]: Start accepts. Automaton has 11411 states and 14022 transitions. Word has length 88 [2022-07-12 09:25:05,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:25:05,389 INFO L495 AbstractCegarLoop]: Abstraction has 11411 states and 14022 transitions. [2022-07-12 09:25:05,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 2 states have internal predecessors, (88), 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) [2022-07-12 09:25:05,389 INFO L276 IsEmpty]: Start isEmpty. Operand 11411 states and 14022 transitions. [2022-07-12 09:25:05,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-12 09:25:05,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:25:05,390 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:25:05,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 09:25:05,391 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:25:05,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:25:05,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1090783836, now seen corresponding path program 1 times [2022-07-12 09:25:05,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:25:05,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121487408] [2022-07-12 09:25:05,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:25:05,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:25:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:25:05,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:25:05,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:25:05,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121487408] [2022-07-12 09:25:05,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121487408] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:25:05,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:25:05,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:25:05,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393013248] [2022-07-12 09:25:05,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:25:05,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:25:05,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:25:05,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:25:05,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:05,465 INFO L87 Difference]: Start difference. First operand 11411 states and 14022 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-12 09:25:05,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:25:05,524 INFO L93 Difference]: Finished difference Result 11557 states and 14254 transitions. [2022-07-12 09:25:05,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:25:05,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-12 09:25:05,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:25:05,554 INFO L225 Difference]: With dead ends: 11557 [2022-07-12 09:25:05,554 INFO L226 Difference]: Without dead ends: 11481 [2022-07-12 09:25:05,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:05,562 INFO L413 NwaCegarLoop]: 1734 mSDtfsCounter, 1550 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:25:05,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 1853 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:25:05,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11481 states. [2022-07-12 09:25:05,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11481 to 11479. [2022-07-12 09:25:05,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11479 states, 11477 states have (on average 1.2312450988934391) internal successors, (14131), 11478 states have internal predecessors, (14131), 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) [2022-07-12 09:25:05,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11479 states to 11479 states and 14131 transitions. [2022-07-12 09:25:05,699 INFO L78 Accepts]: Start accepts. Automaton has 11479 states and 14131 transitions. Word has length 106 [2022-07-12 09:25:05,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:25:05,701 INFO L495 AbstractCegarLoop]: Abstraction has 11479 states and 14131 transitions. [2022-07-12 09:25:05,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-12 09:25:05,701 INFO L276 IsEmpty]: Start isEmpty. Operand 11479 states and 14131 transitions. [2022-07-12 09:25:05,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-12 09:25:05,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:25:05,703 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:25:05,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 09:25:05,704 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:25:05,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:25:05,704 INFO L85 PathProgramCache]: Analyzing trace with hash 326222874, now seen corresponding path program 1 times [2022-07-12 09:25:05,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:25:05,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234903881] [2022-07-12 09:25:05,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:25:05,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:25:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:25:05,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:25:05,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:25:05,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234903881] [2022-07-12 09:25:05,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234903881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:25:05,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:25:05,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:25:05,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990725913] [2022-07-12 09:25:05,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:25:05,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:25:05,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:25:05,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:25:05,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:05,753 INFO L87 Difference]: Start difference. First operand 11479 states and 14131 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-12 09:25:05,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:25:05,790 INFO L93 Difference]: Finished difference Result 11755 states and 14571 transitions. [2022-07-12 09:25:05,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:25:05,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-12 09:25:05,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:25:05,862 INFO L225 Difference]: With dead ends: 11755 [2022-07-12 09:25:05,864 INFO L226 Difference]: Without dead ends: 11611 [2022-07-12 09:25:05,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:05,866 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 1546 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 1852 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:25:05,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 1852 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:25:05,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11611 states. [2022-07-12 09:25:05,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11611 to 11609. [2022-07-12 09:25:05,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11609 states, 11607 states have (on average 1.235289049711381) internal successors, (14338), 11608 states have internal predecessors, (14338), 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) [2022-07-12 09:25:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11609 states to 11609 states and 14338 transitions. [2022-07-12 09:25:05,971 INFO L78 Accepts]: Start accepts. Automaton has 11609 states and 14338 transitions. Word has length 106 [2022-07-12 09:25:05,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:25:05,972 INFO L495 AbstractCegarLoop]: Abstraction has 11609 states and 14338 transitions. [2022-07-12 09:25:05,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-12 09:25:05,972 INFO L276 IsEmpty]: Start isEmpty. Operand 11609 states and 14338 transitions. [2022-07-12 09:25:05,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-12 09:25:05,973 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:25:05,973 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:25:05,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 09:25:05,973 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:25:05,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:25:05,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1573731728, now seen corresponding path program 1 times [2022-07-12 09:25:05,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:25:05,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607366196] [2022-07-12 09:25:05,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:25:05,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:25:05,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:25:06,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:25:06,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:25:06,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607366196] [2022-07-12 09:25:06,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607366196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:25:06,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:25:06,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:25:06,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39156381] [2022-07-12 09:25:06,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:25:06,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:25:06,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:25:06,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:25:06,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:06,012 INFO L87 Difference]: Start difference. First operand 11609 states and 14338 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-12 09:25:06,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:25:06,058 INFO L93 Difference]: Finished difference Result 12133 states and 15172 transitions. [2022-07-12 09:25:06,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:25:06,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-12 09:25:06,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:25:06,074 INFO L225 Difference]: With dead ends: 12133 [2022-07-12 09:25:06,075 INFO L226 Difference]: Without dead ends: 11859 [2022-07-12 09:25:06,079 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:06,079 INFO L413 NwaCegarLoop]: 1724 mSDtfsCounter, 1542 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1542 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:25:06,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1542 Valid, 1851 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:25:06,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11859 states. [2022-07-12 09:25:06,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11859 to 11857. [2022-07-12 09:25:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11857 states, 11855 states have (on average 1.2425137072964993) internal successors, (14730), 11856 states have internal predecessors, (14730), 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) [2022-07-12 09:25:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11857 states to 11857 states and 14730 transitions. [2022-07-12 09:25:06,203 INFO L78 Accepts]: Start accepts. Automaton has 11857 states and 14730 transitions. Word has length 106 [2022-07-12 09:25:06,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:25:06,203 INFO L495 AbstractCegarLoop]: Abstraction has 11857 states and 14730 transitions. [2022-07-12 09:25:06,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-12 09:25:06,204 INFO L276 IsEmpty]: Start isEmpty. Operand 11857 states and 14730 transitions. [2022-07-12 09:25:06,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-12 09:25:06,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:25:06,205 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:25:06,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 09:25:06,205 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:25:06,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:25:06,205 INFO L85 PathProgramCache]: Analyzing trace with hash 832299526, now seen corresponding path program 1 times [2022-07-12 09:25:06,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:25:06,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111903086] [2022-07-12 09:25:06,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:25:06,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:25:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:25:06,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:25:06,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:25:06,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111903086] [2022-07-12 09:25:06,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111903086] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:25:06,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:25:06,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:25:06,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010751378] [2022-07-12 09:25:06,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:25:06,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:25:06,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:25:06,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:25:06,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:06,265 INFO L87 Difference]: Start difference. First operand 11857 states and 14730 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-12 09:25:06,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:25:06,319 INFO L93 Difference]: Finished difference Result 12853 states and 16308 transitions. [2022-07-12 09:25:06,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:25:06,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-12 09:25:06,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:25:06,337 INFO L225 Difference]: With dead ends: 12853 [2022-07-12 09:25:06,337 INFO L226 Difference]: Without dead ends: 12331 [2022-07-12 09:25:06,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:06,344 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 1522 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1814 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:25:06,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1814 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:25:06,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12331 states. [2022-07-12 09:25:06,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12331 to 12329. [2022-07-12 09:25:06,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12329 states, 12327 states have (on average 1.2549687677455992) internal successors, (15470), 12328 states have internal predecessors, (15470), 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) [2022-07-12 09:25:06,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12329 states to 12329 states and 15470 transitions. [2022-07-12 09:25:06,477 INFO L78 Accepts]: Start accepts. Automaton has 12329 states and 15470 transitions. Word has length 106 [2022-07-12 09:25:06,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:25:06,478 INFO L495 AbstractCegarLoop]: Abstraction has 12329 states and 15470 transitions. [2022-07-12 09:25:06,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 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) [2022-07-12 09:25:06,478 INFO L276 IsEmpty]: Start isEmpty. Operand 12329 states and 15470 transitions. [2022-07-12 09:25:06,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-12 09:25:06,479 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:25:06,479 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:25:06,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 09:25:06,480 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:25:06,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:25:06,480 INFO L85 PathProgramCache]: Analyzing trace with hash 2050284924, now seen corresponding path program 1 times [2022-07-12 09:25:06,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:25:06,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432130383] [2022-07-12 09:25:06,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:25:06,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:25:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:25:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:25:06,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:25:06,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432130383] [2022-07-12 09:25:06,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432130383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:25:06,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:25:06,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 09:25:06,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848167047] [2022-07-12 09:25:06,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:25:06,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:25:06,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:25:06,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:25:06,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:25:06,566 INFO L87 Difference]: Start difference. First operand 12329 states and 15470 transitions. Second operand has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2022-07-12 09:25:07,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:25:07,303 INFO L93 Difference]: Finished difference Result 28233 states and 40574 transitions. [2022-07-12 09:25:07,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 09:25:07,303 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-07-12 09:25:07,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:25:07,354 INFO L225 Difference]: With dead ends: 28233 [2022-07-12 09:25:07,354 INFO L226 Difference]: Without dead ends: 27239 [2022-07-12 09:25:07,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-07-12 09:25:07,366 INFO L413 NwaCegarLoop]: 1621 mSDtfsCounter, 15549 mSDsluCounter, 2026 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15549 SdHoareTripleChecker+Valid, 3647 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:25:07,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15549 Valid, 3647 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:25:07,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27239 states. [2022-07-12 09:25:07,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27239 to 13321. [2022-07-12 09:25:07,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13321 states, 13319 states have (on average 1.276822584278099) internal successors, (17006), 13320 states have internal predecessors, (17006), 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) [2022-07-12 09:25:07,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13321 states to 13321 states and 17006 transitions. [2022-07-12 09:25:07,694 INFO L78 Accepts]: Start accepts. Automaton has 13321 states and 17006 transitions. Word has length 106 [2022-07-12 09:25:07,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:25:07,694 INFO L495 AbstractCegarLoop]: Abstraction has 13321 states and 17006 transitions. [2022-07-12 09:25:07,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.6) internal successors, (106), 10 states have internal predecessors, (106), 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) [2022-07-12 09:25:07,695 INFO L276 IsEmpty]: Start isEmpty. Operand 13321 states and 17006 transitions. [2022-07-12 09:25:07,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-12 09:25:07,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:25:07,696 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:25:07,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 09:25:07,696 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:25:07,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:25:07,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1813103660, now seen corresponding path program 1 times [2022-07-12 09:25:07,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:25:07,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696217050] [2022-07-12 09:25:07,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:25:07,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:25:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:25:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:25:07,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:25:07,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696217050] [2022-07-12 09:25:07,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696217050] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:25:07,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:25:07,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:25:07,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016616876] [2022-07-12 09:25:07,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:25:07,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:25:07,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:25:07,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:25:07,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:07,742 INFO L87 Difference]: Start difference. First operand 13321 states and 17006 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-12 09:25:07,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:25:07,907 INFO L93 Difference]: Finished difference Result 16263 states and 21602 transitions. [2022-07-12 09:25:07,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:25:07,907 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-12 09:25:07,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:25:07,926 INFO L225 Difference]: With dead ends: 16263 [2022-07-12 09:25:07,926 INFO L226 Difference]: Without dead ends: 14277 [2022-07-12 09:25:07,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:07,932 INFO L413 NwaCegarLoop]: 1648 mSDtfsCounter, 1514 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:25:07,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 1764 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:25:07,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14277 states. [2022-07-12 09:25:08,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14277 to 14275. [2022-07-12 09:25:08,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14275 states, 14273 states have (on average 1.2941918307293492) internal successors, (18472), 14274 states have internal predecessors, (18472), 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) [2022-07-12 09:25:08,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14275 states to 14275 states and 18472 transitions. [2022-07-12 09:25:08,241 INFO L78 Accepts]: Start accepts. Automaton has 14275 states and 18472 transitions. Word has length 108 [2022-07-12 09:25:08,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:25:08,241 INFO L495 AbstractCegarLoop]: Abstraction has 14275 states and 18472 transitions. [2022-07-12 09:25:08,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-12 09:25:08,242 INFO L276 IsEmpty]: Start isEmpty. Operand 14275 states and 18472 transitions. [2022-07-12 09:25:08,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-12 09:25:08,243 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:25:08,243 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:25:08,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 09:25:08,243 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:25:08,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:25:08,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1879597172, now seen corresponding path program 1 times [2022-07-12 09:25:08,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:25:08,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694833760] [2022-07-12 09:25:08,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:25:08,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:25:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:25:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:25:08,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:25:08,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694833760] [2022-07-12 09:25:08,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694833760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:25:08,457 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:25:08,457 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 09:25:08,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318734143] [2022-07-12 09:25:08,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:25:08,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:25:08,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:25:08,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:25:08,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:25:08,459 INFO L87 Difference]: Start difference. First operand 14275 states and 18472 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 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) [2022-07-12 09:25:08,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:25:08,965 INFO L93 Difference]: Finished difference Result 17215 states and 23042 transitions. [2022-07-12 09:25:08,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 09:25:08,966 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-12 09:25:08,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:25:08,984 INFO L225 Difference]: With dead ends: 17215 [2022-07-12 09:25:08,985 INFO L226 Difference]: Without dead ends: 14277 [2022-07-12 09:25:08,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-07-12 09:25:08,993 INFO L413 NwaCegarLoop]: 1658 mSDtfsCounter, 8144 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8144 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 09:25:08,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8144 Valid, 2487 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 09:25:09,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14277 states. [2022-07-12 09:25:09,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14277 to 14275. [2022-07-12 09:25:09,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14275 states, 14273 states have (on average 1.2925103341974358) internal successors, (18448), 14274 states have internal predecessors, (18448), 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) [2022-07-12 09:25:09,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14275 states to 14275 states and 18448 transitions. [2022-07-12 09:25:09,301 INFO L78 Accepts]: Start accepts. Automaton has 14275 states and 18448 transitions. Word has length 108 [2022-07-12 09:25:09,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:25:09,301 INFO L495 AbstractCegarLoop]: Abstraction has 14275 states and 18448 transitions. [2022-07-12 09:25:09,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.8) internal successors, (108), 10 states have internal predecessors, (108), 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) [2022-07-12 09:25:09,301 INFO L276 IsEmpty]: Start isEmpty. Operand 14275 states and 18448 transitions. [2022-07-12 09:25:09,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-12 09:25:09,302 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:25:09,302 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:25:09,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 09:25:09,303 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:25:09,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:25:09,303 INFO L85 PathProgramCache]: Analyzing trace with hash 621051568, now seen corresponding path program 1 times [2022-07-12 09:25:09,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:25:09,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210350920] [2022-07-12 09:25:09,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:25:09,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:25:09,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:25:09,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:25:09,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:25:09,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210350920] [2022-07-12 09:25:09,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210350920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:25:09,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:25:09,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:25:09,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439401165] [2022-07-12 09:25:09,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:25:09,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:25:09,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:25:09,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:25:09,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:09,346 INFO L87 Difference]: Start difference. First operand 14275 states and 18448 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-12 09:25:09,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:25:09,634 INFO L93 Difference]: Finished difference Result 19863 states and 27058 transitions. [2022-07-12 09:25:09,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:25:09,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-12 09:25:09,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:25:09,654 INFO L225 Difference]: With dead ends: 19863 [2022-07-12 09:25:09,654 INFO L226 Difference]: Without dead ends: 16925 [2022-07-12 09:25:09,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:09,662 INFO L413 NwaCegarLoop]: 1680 mSDtfsCounter, 1526 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 1823 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:25:09,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 1823 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:25:09,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16925 states. [2022-07-12 09:25:10,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16925 to 16923. [2022-07-12 09:25:10,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16923 states, 16921 states have (on average 1.3275811122274097) internal successors, (22464), 16922 states have internal predecessors, (22464), 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) [2022-07-12 09:25:10,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16923 states to 16923 states and 22464 transitions. [2022-07-12 09:25:10,096 INFO L78 Accepts]: Start accepts. Automaton has 16923 states and 22464 transitions. Word has length 108 [2022-07-12 09:25:10,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:25:10,096 INFO L495 AbstractCegarLoop]: Abstraction has 16923 states and 22464 transitions. [2022-07-12 09:25:10,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-12 09:25:10,096 INFO L276 IsEmpty]: Start isEmpty. Operand 16923 states and 22464 transitions. [2022-07-12 09:25:10,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-12 09:25:10,097 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:25:10,097 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:25:10,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 09:25:10,098 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:25:10,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:25:10,098 INFO L85 PathProgramCache]: Analyzing trace with hash 894739280, now seen corresponding path program 1 times [2022-07-12 09:25:10,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:25:10,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793374666] [2022-07-12 09:25:10,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:25:10,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:25:10,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:25:10,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:25:10,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:25:10,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793374666] [2022-07-12 09:25:10,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793374666] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:25:10,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:25:10,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:25:10,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727615027] [2022-07-12 09:25:10,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:25:10,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:25:10,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:25:10,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:25:10,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:10,142 INFO L87 Difference]: Start difference. First operand 16923 states and 22464 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-12 09:25:10,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:25:10,709 INFO L93 Difference]: Finished difference Result 27519 states and 38626 transitions. [2022-07-12 09:25:10,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:25:10,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-12 09:25:10,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:25:10,740 INFO L225 Difference]: With dead ends: 27519 [2022-07-12 09:25:10,741 INFO L226 Difference]: Without dead ends: 21933 [2022-07-12 09:25:10,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:10,750 INFO L413 NwaCegarLoop]: 1693 mSDtfsCounter, 1530 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:25:10,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 1832 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:25:10,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21933 states. [2022-07-12 09:25:11,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21933 to 21931. [2022-07-12 09:25:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21931 states, 21929 states have (on average 1.3665921838661135) internal successors, (29968), 21930 states have internal predecessors, (29968), 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) [2022-07-12 09:25:11,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21931 states to 21931 states and 29968 transitions. [2022-07-12 09:25:11,557 INFO L78 Accepts]: Start accepts. Automaton has 21931 states and 29968 transitions. Word has length 108 [2022-07-12 09:25:11,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:25:11,557 INFO L495 AbstractCegarLoop]: Abstraction has 21931 states and 29968 transitions. [2022-07-12 09:25:11,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-12 09:25:11,557 INFO L276 IsEmpty]: Start isEmpty. Operand 21931 states and 29968 transitions. [2022-07-12 09:25:11,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-12 09:25:11,558 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:25:11,558 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:25:11,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 09:25:11,559 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:25:11,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:25:11,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1581156368, now seen corresponding path program 1 times [2022-07-12 09:25:11,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:25:11,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048092984] [2022-07-12 09:25:11,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:25:11,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:25:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:25:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:25:11,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:25:11,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048092984] [2022-07-12 09:25:11,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048092984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:25:11,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:25:11,606 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:25:11,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744805245] [2022-07-12 09:25:11,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:25:11,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:25:11,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:25:11,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:25:11,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:11,607 INFO L87 Difference]: Start difference. First operand 21931 states and 29968 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-12 09:25:12,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:25:12,726 INFO L93 Difference]: Finished difference Result 41967 states and 60178 transitions. [2022-07-12 09:25:12,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:25:12,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-12 09:25:12,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:25:12,767 INFO L225 Difference]: With dead ends: 41967 [2022-07-12 09:25:12,767 INFO L226 Difference]: Without dead ends: 31373 [2022-07-12 09:25:12,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:12,784 INFO L413 NwaCegarLoop]: 1706 mSDtfsCounter, 1534 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:25:12,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1841 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:25:12,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31373 states. [2022-07-12 09:25:14,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31373 to 31371. [2022-07-12 09:25:14,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31371 states, 31369 states have (on average 1.400108387261309) internal successors, (43920), 31370 states have internal predecessors, (43920), 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) [2022-07-12 09:25:14,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31371 states to 31371 states and 43920 transitions. [2022-07-12 09:25:14,189 INFO L78 Accepts]: Start accepts. Automaton has 31371 states and 43920 transitions. Word has length 108 [2022-07-12 09:25:14,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:25:14,189 INFO L495 AbstractCegarLoop]: Abstraction has 31371 states and 43920 transitions. [2022-07-12 09:25:14,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-12 09:25:14,189 INFO L276 IsEmpty]: Start isEmpty. Operand 31371 states and 43920 transitions. [2022-07-12 09:25:14,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-12 09:25:14,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:25:14,190 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:25:14,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 09:25:14,190 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:25:14,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:25:14,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1401750384, now seen corresponding path program 1 times [2022-07-12 09:25:14,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:25:14,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916538853] [2022-07-12 09:25:14,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:25:14,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:25:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:25:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:25:14,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:25:14,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916538853] [2022-07-12 09:25:14,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916538853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:25:14,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:25:14,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 09:25:14,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947808445] [2022-07-12 09:25:14,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:25:14,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 09:25:14,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:25:14,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 09:25:14,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:14,234 INFO L87 Difference]: Start difference. First operand 31371 states and 43920 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-12 09:25:16,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:25:16,728 INFO L93 Difference]: Finished difference Result 69135 states and 100114 transitions. [2022-07-12 09:25:16,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 09:25:16,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 108 [2022-07-12 09:25:16,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:25:16,811 INFO L225 Difference]: With dead ends: 69135 [2022-07-12 09:25:16,811 INFO L226 Difference]: Without dead ends: 49101 [2022-07-12 09:25:16,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 09:25:16,840 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 1538 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1538 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:25:16,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1538 Valid, 1850 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:25:16,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49101 states. [2022-07-12 09:25:19,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49101 to 49099. [2022-07-12 09:25:19,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49099 states, 49097 states have (on average 1.4198830885797502) internal successors, (69712), 49098 states have internal predecessors, (69712), 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) [2022-07-12 09:25:19,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49099 states to 49099 states and 69712 transitions. [2022-07-12 09:25:19,641 INFO L78 Accepts]: Start accepts. Automaton has 49099 states and 69712 transitions. Word has length 108 [2022-07-12 09:25:19,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:25:19,642 INFO L495 AbstractCegarLoop]: Abstraction has 49099 states and 69712 transitions. [2022-07-12 09:25:19,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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) [2022-07-12 09:25:19,642 INFO L276 IsEmpty]: Start isEmpty. Operand 49099 states and 69712 transitions. [2022-07-12 09:25:19,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-12 09:25:19,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:25:19,643 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 09:25:19,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 09:25:19,643 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:25:19,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:25:19,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2018214719, now seen corresponding path program 1 times [2022-07-12 09:25:19,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:25:19,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54713899] [2022-07-12 09:25:19,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:25:19,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:25:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:25:19,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 09:25:19,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:25:19,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54713899] [2022-07-12 09:25:19,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54713899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:25:19,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:25:19,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 09:25:19,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220837048] [2022-07-12 09:25:19,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:25:19,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 09:25:19,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:25:19,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 09:25:19,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 09:25:19,731 INFO L87 Difference]: Start difference. First operand 49099 states and 69712 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:25:24,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 09:25:24,510 INFO L93 Difference]: Finished difference Result 81266 states and 116289 transitions. [2022-07-12 09:25:24,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 09:25:24,511 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-07-12 09:25:24,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 09:25:24,609 INFO L225 Difference]: With dead ends: 81266 [2022-07-12 09:25:24,609 INFO L226 Difference]: Without dead ends: 81264 [2022-07-12 09:25:24,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 09:25:24,627 INFO L413 NwaCegarLoop]: 1669 mSDtfsCounter, 334 mSDsluCounter, 4874 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 6543 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 09:25:24,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 6543 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 09:25:24,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81264 states. [2022-07-12 09:25:28,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81264 to 50635. [2022-07-12 09:25:28,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50635 states, 50633 states have (on average 1.4046175419193017) internal successors, (71120), 50634 states have internal predecessors, (71120), 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) [2022-07-12 09:25:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50635 states to 50635 states and 71120 transitions. [2022-07-12 09:25:28,352 INFO L78 Accepts]: Start accepts. Automaton has 50635 states and 71120 transitions. Word has length 109 [2022-07-12 09:25:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 09:25:28,352 INFO L495 AbstractCegarLoop]: Abstraction has 50635 states and 71120 transitions. [2022-07-12 09:25:28,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 09:25:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 50635 states and 71120 transitions. [2022-07-12 09:25:28,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-12 09:25:28,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 09:25:28,368 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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] [2022-07-12 09:25:28,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 09:25:28,369 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 09:25:28,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 09:25:28,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1243757929, now seen corresponding path program 1 times [2022-07-12 09:25:28,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 09:25:28,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418069244] [2022-07-12 09:25:28,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 09:25:28,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 09:25:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 09:25:28,457 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 09:25:28,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 09:25:28,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418069244] [2022-07-12 09:25:28,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418069244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 09:25:28,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 09:25:28,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 09:25:28,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665425511] [2022-07-12 09:25:28,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 09:25:28,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 09:25:28,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 09:25:28,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 09:25:28,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-12 09:25:28,459 INFO L87 Difference]: Start difference. First operand 50635 states and 71120 transitions. Second operand has 10 states, 10 states have (on average 12.9) internal successors, (129), 10 states have internal predecessors, (129), 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)